CI CODE: B3131 DRL Refs : EN-U16 - European …emits.sso.esa.int/emits-doc/ASTRIUMLIM/BepiColombo_MTM...f GOST 10219-77 Xenon g MIL-STD-6866 Penetrant Inspection h MIL-STD-453C Radiographic

BC.ASU.SP.00009

Issue 1Page 1 of 64

Document Autogenerated from DOORS Module : /BepiColombo Implementation Phase/Level 3 Equipment Specifications/MPB/Xenon Storage Tank Specification BC-ASU-SP-00009_Xenon_Storage_Tank_Req_Spec formal issue 1 non.doc

Xenon Storage Tank (XST) Specification

CI CODE: B3131 DRL Refs : EN-U16

UK EXPORT CONTROL RATING : Not Listed

Rated By :

Prepared by: Date:

Checked by: Date:

Approved by: Date:

Authorised by: Date:

This document is produced under ESA contract, ESA export exemptions may therefore apply. These Technologies may require an export licence if exported from the EU

© Astrium Limited 2007

Astrium Ltd owns the copyright of this document which is supplied in confidence and which shall not be used for any purpose other than that for which it is supplied and shall not in whole or in part be reproduced, copied, or communicated

to any person without written permission from the owner.

Astrium Limited, Registered in England and Wales No. 2449259 Registered Office: Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, England

BC.ASU.SP.00009Issue 1

Page 2 of 64

Astrium Ltd owns the copyright of this document which is supplied in confidence and which shall not be used for any purpose other than that for which it is supplied and shall not in whole or in part be reproduced, copied, or communicated to any person without written permission from the owner.

BC-ASU-SP-00009_Xenon_Storage_Tank_Req_Spec formal issue 1 non.doc

INTENTIONALLY BLANK


Page 3 of 64



CONTENTS 1 Scope ........................................................................................................................................................ 6 2 Applicable Documents............................................................................................................................... 7

2.1 Customer Documents ........................................................................................................................ 7 2.2 Military Standards .............................................................................................................................. 7 2.3 Other Standards................................................................................................................................. 8

3 Functional and Performance Requirements.............................................................................................. 9 3.1 Component Function.......................................................................................................................... 9 3.2 Performance....................................................................................................................................... 9

3.2.1 Functional Performance............................................................................................................ 10 3.2.2 Electrical Performance.............................................................................................................. 11 3.2.3 Operating Requirements........................................................................................................... 11

4 Design and Interface Requirements........................................................................................................ 15 4.1 Design Criteria ................................................................................................................................. 15

4.1.1 General Design Criteria ............................................................................................................ 15 4.1.2 Proof Pressure .......................................................................................................................... 16 4.1.3 Burst Pressure .......................................................................................................................... 17 4.1.4 Fracture Control Requirements ................................................................................................ 17 4.1.5 Duration above MEOP (Post Delivery) ..................................................................................... 17

4.2 Environmental Conditions ................................................................................................................ 17 4.3 Physical Characteristics ................................................................................................................... 17

4.3.1 Configuration and Dimensions.................................................................................................. 17 4.3.2 Mass Properties ........................................................................................................................ 18 4.3.3 Stiffness .................................................................................................................................... 18 4.3.4 Interfaces .................................................................................................................................. 18

4.4 Reliability .......................................................................................................................................... 19 4.5 Maintainability .................................................................................................................................. 19 4.6 Design and Construction.................................................................................................................. 19

4.6.1 Materials, Parts and Processing ............................................................................................... 19 4.7 Safety ............................................................................................................................................... 23

4.7.1 General ..................................................................................................................................... 23 4.7.2 Toxic or Hazardous Materials ................................................................................................... 23 4.7.3 Handling, Installing and Operating Limitations/Precautions ..................................................... 23

4.8 Thermal Properties........................................................................................................................... 23 5 Product Assurance .................................................................................................................................. 24

5.1 PA Requirements ............................................................................................................................. 24 6 Verification and Test Requirements ........................................................................................................ 25

6.1 General requirements ...................................................................................................................... 25 6.1.1 Responsibility for Inspection and Test ...................................................................................... 25 6.1.2 Quality Assurance Programme................................................................................................. 25 6.1.3 Surveillance, and Witness of Inspection and Test.................................................................... 25 6.1.4 Preproduction Sample .............................................................................................................. 25 6.1.5 Classification of Inspection and Test ........................................................................................ 25

6.2 Verification of Compliance ............................................................................................................... 25 6.2.1 General ..................................................................................................................................... 26 6.2.2 Acceptance Inspection and Test............................................................................................... 27 6.2.3 Qualification Inspection and Test.............................................................................................. 28 6.2.4 Protoflight Model (PFM) Inspection and Test ........................................................................... 30

6.3 Test Conditions and Test Equipment............................................................................................... 31 6.3.1 Ambient Conditions................................................................................................................... 31 6.3.2 Test Equipment......................................................................................................................... 31 6.3.3 Tolerance of Test Conditions (Excluding Ambient) .................................................................. 31 6.3.4 Accuracy of Measurement ........................................................................................................ 32 6.3.5 Product Test Controls ............................................................................................................... 33

6.4 Test Methods ................................................................................................................................... 33 6.4.1 Inspection/Examination............................................................................................................. 33


Page 4 of 64



6.4.2 Proof Pressure Test/Screening Test......................................................................................... 34 6.4.3 Vibration Tests .......................................................................................................................... 34 6.4.4 Leakage Tests .......................................................................................................................... 36 6.4.5 Internal Volume......................................................................................................................... 36 6.4.6 Cleanliness Verification............................................................................................................. 36 6.4.7 Burst Test.................................................................................................................................. 37 6.4.8 Constant Acceleration............................................................................................................... 38 6.4.9 Thermal Tests (Qualification).................................................................................................... 38 6.4.10 Environmental Temperature (Non-Operating) .......................................................................... 40 6.4.11 Internal Pressure Cycling.......................................................................................................... 40 6.4.12 Expulsion Test .......................................................................................................................... 41 6.4.13 Non-Destructive Inspection (Tank Level Acceptance).............................................................. 41 6.4.14 Visual Inspection....................................................................................................................... 42 6.4.15 Preparation for Data Review..................................................................................................... 42 6.4.16 “Leak Before Burst” Test Programme....................................................................................... 42 6.4.17 Shock Test ................................................................................................................................ 42

6.5 Preparation for Delivery, Inspection and Test.................................................................................. 42 6.5.1 Methods of Preservation and Packaging.................................................................................. 42 6.5.2 Equipment Packaging............................................................................................................... 43 6.5.3 Packing ..................................................................................................................................... 43

6.6 Documentation ................................................................................................................................. 43 7 GDIR Applicability Matrix......................................................................................................................... 47 8 EMC Specification Applicability Matrix .................................................................................................... 53 9 Enviromental and Test Specification Applicability Matrix ........................................................................ 54

TABLES Table 6.6-1...................................................................................................................................................... 54 Table 6.6-2...................................................................................................................................................... 54

FIGURES Figure 3.2-1: Spacecraft Level Proof Test Cycle Duration above MEOP ..................................................... 14 Figure 6.4-1: Tank Thermal Cycle ................................................................................................................. 39


Page 5 of 64



INTENTIONALLY BLANK


Page 6 of 64



1 SCOPE

This document specifies the performance, design and test requirement for the Xenon Storage Tank (XST) for use in the BepiColombo spacecraft MTM Electric Propulsion System (MEPS).

The BepiColombo spacecraft shall use 2 Xenon tanks.

This specification defines the requirements for each one of these Xenon tanks.


Page 7 of 64



2 APPLICABLE DOCUMENTS

XST-4//

The following documents form a part of this specification to the extent specified herein. In the event of conflict between this specification and any of the applicable documents referenced below, this conflict shall be notified to the Customer.

Throughout this specification Applicable Documents are referred to in the text as AD/2.x(y) etc.

All documents referenced in the specification shall be to the revision stated in the statement of work (SOW).

2.1 Customer Documents

a BC-ASD-SP-00018

Product Assurance Requirements for Subcontractors

b BC-ASD-SP-

00006 Configuration & Data Management Requirements

c DT0291493 Xenon Storage Tank IRD

d BC-ASD-RS-00001

General Design and Interface Requirements (GDIR)

e Not Used

f DT0291495 Xenon Storage Tank Mounting and Structure Interface

g BC-ASD-SP-00024

Management Requirements for Subcontractors

h BC-ASD-SP-00033

EMC/ESD Design and Test Requirements Specification

i BC-ASD-SP-00002

Environment Requirements and Test Specification

j Not Used

2.2 Military Standards

a MIL-STD-1522A Standard General Requirements for Safe Design and Operation of Pressurised Missile and Space Systems

b MIL-PRF-27407B Helium

c MIL-PRF-27401D

Nitrogen

d MIL-A-18455C Argon Gas

e Not used

f GOST 10219-77 Xenon

g MIL-STD-6866 Penetrant Inspection

h MIL-STD-453C Radiographic Inspection

i MIL-STD-889B Dissimilar Metals


Page 8 of 64



2.3 Other Standards

a TT-I-735A(3) Isopropyl Alcohol

b SE-S-0073 Deionised/Demineralised Water (NASA)

c MSC-Spec-C-25 Cleanliness

d NAS-1514 Radiographic Standard for Classification of Fusion Welded Discontinuities

e

f Fed. Std.209D Cleanroom and Work Station Requirements Controlled Environment

g SNT-TC-1A American Society for Non-Destructive Testing Recommended Practices

h

i ECSS-E-30-01A Fracture control

j CSG-RS-10A-CN, Vol.1

CSG Safety Regulations General Rules

k CSG-RS-21A-CN, Vol.2, Pt 2

CSG Safety Regulations Specific Rules

l ECSS-E-32-02 Standard for Pressure Vessels


Page 9 of 64



3 FUNCTIONAL AND PERFORMANCE REQUIREMENTS

3.1 Component Function

XST-13//R

The tank is a pressure vessel used for the storage of high pressure Xenon. Xenon from the tank is supplied via a pressure regulator to the electric thrusters for the duration of the spacecraft mission.

XST-14//R

The tank shall have two ports, one located at either end of the tank. Tank pressurisation, depressurisation and Xenon delivery shall be via these ports.

The tank maximum temperature on ground, during launch and during initial flight operations is limited to 55°C, to ensure the MEOP of 150 bar is not exceeded at maximum Xenon load. During the cruise to Mercury, the tank temperature is allowed to increase to 60°C as the Xenon load decreases (whilst staying within the 150 bar MEOP limit), as illustrated in Figure 1 below.

Figure 1

55

55.5

56

56.5

57

57.5

58

58.5

59

59.5

60

198 199 200 201 202 203 204 205 206 207 208

Xenon load (kg)

Tem

pera

ture

(C)

XST-1834//

The tank shall be tested over the temperature range up to 60°C (operational, corresponding to 70°C qualification); any exceptions to this are specifically detailed in this specification

3.2 Performance

XST-16//A,R

The equipment shall meet the requirements of this specification when mounted and restrained in the spacecraft as specified in Section 4.3.4.2.

XST-17//A,R

Unit to unit variation shall not degrade tank performance such that any tank would fail the qualification or acceptance tests specified in Section 6 of this specification.


Page 10 of 64



3.2.1 Functional Performance

3.2.1.1 Operating Pressures

XST-20//R

General Notes

• Pressures specified in this document are pressures above local ambient, unless otherwise stated. A specific exception to this is for the evacuation pressure, which shall correspond to 0 bar absolute.

• To enhance tank integrity and safety the tank design shall include an extra 10% pressure case above the stated specified MEOP. This MEOP x 1.1 consideration shall be included in the tank design and test process specifically in the design analysis, fracture mechanics and qualification test programme and will enable additional pressure safety checks to be performed at MEOP x 1.1 at spacecraft level.

XST-21//T

The equipment shall be designed to function at the internal pressures specified below during and after exposure to the environments including fluid/tank temperatures specified in Section 4.2 and Section 3.2.3.2.

Maximum Expected Operating Pressure (MEOP): 150 bar at 55°C.

Event Pressure

Pre-Launch:

Ground Handling Internal Vacuum to MEOP (See note 1)

System Proof Pressure and Safety Tests

0 bar to MEOP × 1.25 ( See note 2)

Launch ≤ MEOP

Post-Launch:

Initial transfer orbit ≤ MEOP

Earth to Mercury transfer MEOP to 0 bar

Note 1: Internal vacuum shall correspond to 0 bar absolute internal to the tank. This shall be achieved under ambient sea-level external pressure conditions.

XST-826//

Note 2: Any specific requirements relating to a minimum recommended pressure to be applied for vibration or any other testing should be clearly stated, and shall be included in the Contractor’s handling Specification / User Manual.

XST-1685//

Note 3: The levels stated in the table correspond to post delivery activities only.

3.2.1.2 Leakage Rates

XST-23//T

Leakage from the equipment shall not exceed 1 × 10-6 scc/sec with helium at maximum expected operating pressure (MEOP) over the specified temperature ranges of Section 3.2.3.2 and Section 4.2

3.2.1.3 Xenon Mass and Internal Volume

XST-25//T,A,R

The tanks shall be sized to store a minimum load of 415.575kg (207.788 kg each tank) of Xenon at any pressure up to MEOP and at temperatures up to 55°C.


Page 11 of 64



XST-621//T,A,R

The corresponding minimum tank volume shall be at least 130.03 litres; this is based on the above pressure and temperature conditions giving a Xenon density of at least 1598.0 kg/ m3.

XST-2112//T,A,I

The Xenon mass to be considered for structural qualification of each tank shall be 208.998 kg

3.2.1.4 Flow Rate

XST-27//R

The equipment inlet/outlet internal flow effective area shall not be less than the stub pipe internal diameter.

3.2.1.5 Step Start Pressure Surge

XST-29//

Not applicable

3.2.1.6 Expulsion Capabilities

XST-31//T,A

The equipment shall not be damaged and shall meet all specified requirements after experiencing a depressurisation of Xenon from MEOP to ambient at the rates specified in Section 3.2.1.7

Note: during such depletions, the temperature shall be maintained within the limits in Section 3.2.3.2

3.2.1.7 Rate of Change of Internal Pressure

XST-33//T

The equipment shall be capable of operating to the requirements of this specification without damage or performance degradation when subject to rates of change of internal pressures up to the following minimum levels.

XST-785//T

• Pressurisation (Filling):

Normal Operation 20 bar/min

Qualification 30 bar/min

XST-786//T

• Depressurisation (Emptying):

Normal Operation 20 bar/min

Qualification 30 bar/min

XST-787//T

Note: during all pressurisations and depressurisations the temperature of the tank shall be maintained within the limits in Section 3.2.3.2

3.2.2 Electrical Performance

XST-35//

There are no electrical performance requirements for this unit.

3.2.3 Operating Requirements

3.2.3.1 Operating/Test Fluids

XST-38//T,A,R

The equipment shall be designed to operate with the following media:


Page 12 of 64



Working Media

Gaseous Xenon (to AD/2.2(f))

The equipment shall also be compatible with the following media:

Test Media

Gaseous Nitrogen (to AD/2.2(c))

Argon Gas (to AD/2.2(d))

Gaseous Helium (to AD/2.2(b))

Isopropyl Alcohol (IPA) (to AD/2.3(a)) (see Note)

Xenon simulant (to AD/2.3(i))

Note: The pressurisation of IPA in contact with titanium or titanium alloys to greater than 4 bar gauge is prohibited

XST-617//A

In the event that the contractor proposes the use of any simulant in place of Xenon for qualification testing, the tank shall also be compatible with this simulant.

XST-618//T,A

The use of Xenon simulants for testing of flight tanks is STRICTLY FORBIDDEN, unless the contractor can clearly demonstrate that any such simulant can be removed from the tank, and that it can be verified that there are no simulant traces after this removal.

XST-619//T,A,R

Processes for the tank cleaning and verification of tank cleanliness after use of simulants shall be subject to Customer approval, before simulants can be considered for use on any flight tanks.

3.2.3.2 Fluid/Tank Temperature

XST-40//T,R

During all ground and flight operations, the tank shall meet the requirements of this specification at tank and fluid temperatures within the range -20°C to +55°C, at all internal pressures between vacuum and MEOP. The tank shall be qualified to cover the range -30°C to +70°C. If the above temperatures are exceeded during usage, the operation shall be stopped until the temperature recovers to a level at which operation can continue.

It should be noted that during usage with Xenon, the upper temperature limit shall be constrained by the MEOP, actual tank volume, and Xenon load.

XST-1693//

During ground depressurisations in ambient conditions the minimum permitted temperature shall be such that condensation will not contaminate the external surface of the tank.


Page 13 of 64



XST-1692//

During Pressurisation and depressurisation operations using gas, the rate of temperature change shall not be greater than 1°C/minute. Care shall be taken not to overshoot the maximum temperature.

3.2.3.3 Design Life

XST-42//T,A,R,S

The equipment shall be designed with positive margins of safety to meet the requirements stated in this specification, after storage:

• 5 years at MEOP during ground tests or after integration into the spacecraft

and

• Pressure duty cycles specified in Section 3.2.3.4

and

• 6.3 years in-orbit at internal pressures between MEOP and 0 bar.

3.2.3.4 Cycle Life

XST-44//T,A,R,S

The cycles below are in addition to any tank pre-delivery cycles and any contingency reserve cycles that are applicable to the tank before delivery to the Customer.

The equipment shall be designed to continue to meet the requirements of this specification after being subjected to the following minimum duty pressure cycles (normal operation, post-delivery to the Customer):

Ground Handling/Pre-launch: 5 cycles internal vacuum (10-4Torr)

3 cycles (min) to MEOP × 0.375

+ 5 cycles to MEOP

+ 7 cycles to MEOP × 1.1*

+ 2 cycles (min) to MEOP × 1.25

(Refer to Figure 3.2-1 and Section 4.1.5).

Flight: 50 cycles, 12 bar variation, without exceeding MEOP;

Actual pressure range may be anywhere in the MEOP range

Analysis shall cover the above worst case.

* The pressure specified here is 1.1 × MEOP rather than MEOP to allow for the case where a proof × 1.1 safety test is performed prior to the MEOP test


Page 14 of 64



XST-480//T,R,S

MEOP

1.25 xMEOP

Pressure

Hours (not to scale)Total 10 hours

8 hrs 25 min 5 min 1.5 hrs

MEOP

1.25 xMEOP

Pressure

Hours (not to scale)Total 10 hours

8 hrs 25 min 5 min 1.5 hrs

Figure 3.2-1: Spacecraft Level Proof Test Cycle Duration above MEOP


Page 15 of 64



4 DESIGN AND INTERFACE REQUIREMENTS

4.1 Design Criteria

4.1.1 General Design Criteria

4.1.1.1 Design/Test Criteria

XST-48//A,R,S

Design and testing of the equipment shall comply with the following requirements:

• AD/2.3(i) including demonstrated leak before burst characteristics (demonstrate by analysis or test that the tank is LBB at MEOP x 1.1 with metallic liner flaw);

• Proof pressure as Section 4.1.2 and burst pressure as Section 4.1.3;

• CSG Safety Regulations AD/2.3(j) and AD/2.3(k);

• Structural Strength Analysis to verify Section 4.1.1.2 requirements;

Fracture Mechanics Analysis to show “safe-life” in accordance with Section 4.1.4 and AD/2.3(i) on:

i. The tank integral mountings

ii. The pressure vessel metallic shell (with leak before burst at 1.1 × MEOP minimum).

• Safety Testing in accordance with AD/2.3(i).

XST-620//R

Compliance with AD/2.2(a) may be accepted in lieu of AD/2.3(i) as detailed above; with a compliance matrix detailing requirement compliance / non compliance between the documents; however, this approach is subject to specific Customer approval.

4.1.1.2 General Design Loads

XST-50//A,R

The equipment shall be designed to the requirements of Section 4.2 applying the design criteria specified below:

XST-51//A,R,S

Yield Design

Yield design loads are the worst combination of limit loads or stresses as defined in XST-54 below or worst case test condition multiplied by a factor of 1.1 minimum.

The resulting loads or stresses shall give a positive margin of safety when compared with the yield or 0.2% proof allowable load or stress. (Allowables should represent ‘A’ values or higher for material yield response as it affects crack growth life or crack stability margins under sustained loading) Account shall be taken of any detrimental temperature effects over the normal operating temperature range.

In addition no permanent distortion which affects the specified performance shall result from the defined loadings.

XST-52//A,R,S

Ultimate Design (Minimum)

Ultimate design loads are the worst combination of ultimate loads or stresses as defined in XST-55 below.


Page 16 of 64



The resulting loads or stresses shall give a positive margin of safety when compared with the ultimate or failure load or stress appropriate to the structural component. (Allowables should represent ‘A’ values).

Account shall be taken of any detrimental temperature effects over the normal operating temperature range.

Failure is defined as structural collapse, rupture or any other inability to sustain the ultimate loads. Structural deformation shall not precipitate structural failure during any design conditions and environment at loads less than or equal to ultimate loads plus a positive margin of safety.

The following definitions apply:

XST-54//A,R,S

Limit Loads

Limit loads are defined to be the combination of pressure loads from MEOP, plus inertia loads from whichever is the worst of:

• Acceptance random vibration (XST-2096)

or

• Qualification sine vibration (XST-2096) divided by 1.5

or

• Qualification constant acceleration (XST-2096) divided by 1.5.

XST-55//A,R,S

Ultimate loads

Are defined to be the combination of pressure loads from proof pressure, plus inertia loads from whichever is the worst of:

• Qualification random vibration (XST-2096)

or

• Qualification sine vibration (XST-2096)

or

• Qualification constant acceleration (XST-2096)

4.1.2 Proof Pressure

XST-57//T

Equipment Level Design and Pre-Delivery Test Case:

The equipment shall meet all the requirements of this specification after being subjected to a proof pressure of 1.25 × MEOP (factored up for worst case temperature). The test tolerance shall be-0%, +5%.

XST-58//T

System Level Proof Testing (Post Delivery):

The equipment shall be proof tested after integration into the propulsion system at proof pressures up to MEOP × 1.25. The test tolerance shall be-3 bar, +0 bar. Refer to Figure 3.2-1 for predicted spacecraft level proof test cycle.

XST-59//T

System Level Low Pressure Safety Proof Testing (Post Delivery):


Page 17 of 64



The equipment shall be designed to be subjected to system level low pressure safety proof testing to 1.1 × MEOP.

4.1.3 Burst Pressure

XST-61//T

The equipment shall withstand, without rupture, a pressure of 1.5 × MEOP (throughout the qualification temperature range).

XST-62//T

The inlet and outlet stub tubes shall withstand, without rupture a pressure of > 4 × MEOP.

4.1.4 Fracture Control Requirements

XST-65//A,R,S

The Contractor shall propose a fracture control plan, in accordance with AD/2.3(i) which shall be approved by the Customer prior to implementation.

The Xenon tank design shall be demonstrated as compliant with the agreed fracture control plan.

4.1.5 Duration above MEOP (Post Delivery)

XST-67//T,I

The equipment shall be designed to meet the requirements of this specification after being subjected to a minimum of 220 hours at pressures above MEOP (and not exceeding proof). This time period shall consist of 2 cycles of the type shown in Figure 3.2-1 factored by 4 and 7 cycles to MEOP × 1.1 (5 hours per cycle predicted) factored by 4, i.e. 4 × ((10 × 2) + (5 × 7)) = 220 hr

4.2 Environmental Conditions

AD/2.1(i) and AD/2.1(d) defines the overall environmental conditions.

XST-2113//T,I

During enviromental tesing the structural mass of each tank shall be as defined in 2112

XST-69//I,R

The equipment shall be designed with the required margins of safety to meet the design and performance requirements of this specification prior to exposure, during exposure and after exposure to the environments specified in AD/2.1(i) and AD/2.1(d), as applicable. Environments experienced during fabrication (see note, XST-71),

Equipment temperatures induced by operation (i.e. non-environmental) are specified separately in Section 3.2.3.2.

XST-71//I,R

Note Exceptions where the process is an integral part of fabrication shall be approved by the Customer.

4.3 Physical Characteristics

4.3.1 Configuration and Dimensions

XST-126//I

The equipment shall comply with the dimensions, tolerances and configuration as defined in Section 4.3.4 and AD/2.1(c).


Page 18 of 64



4.3.2 Mass Properties

XST-128//T,I

The mass of the equipment shall be the minimum necessary to meet the requirements of this specification, and shall not exceed 20.41 kg.

XST-129//T,A

The Centre of Gravity and Moments of Inertia shall be calculated or measured on the qualification unit.

4.3.3 Stiffness

XST-131//T,A

The equipment shall have a natural frequency greater than 100 Hz (TBC) when supported as in the spacecraft, assuming a rigid structural interface as defined in AD/2.1(f), with up to the maximum xenon load specified in XST-25.

4.3.4 Interfaces

4.3.4.1 Interface with Propulsion Subsystem

XST-134//I,R

The equipment shall be designed for connection to 6.35 mm (0.25")diameter x 0.71 mm (0.028") wall thickness, titanium pipework by welding.

XST-135//I,R

Transition joints shall be incorporated in the unit by the equipment Contractor as necessary.

XST-136//R

Any such joint shall have a proven qualification status.

XST-137//I,R

Stub tube interface with the propulsion subsystem shall conform to AD/2.1(c).

XST-138//T,A,I,R

The tank lifting points shall be designed for safely lifting the empty tank plus 1 kg of thermal hardware.

4.3.4.2 Interface with Structure Subsystem

XST-140//T,A,I,R

The equipment shall meet the requirements of this specification when mounted and retained as shown in AD/2.1(f).

XST-141//T,I

The external physical configuration, centre of gravity, mechanical interface and all critical dimensions shall be established and controlled according to AD/2.1(c).

XST-142//I

The external dimensions shall not exceed those specified by AD/2.1(c).

4.3.4.3 Interface with Thermal Control Subsystem (TCS)

XST-144//A,R

The equipment design shall permit the attachment of the following TCS hardware:

• Heaters

• Temperature Sensors

• Low emissivity tape or multilayer insulation blanket


Page 19 of 64



XST-145//R,S

The outer surface shall be compatible with the following materials/adhesives:

a. IPA per AD/2.3(a)

b. Adhesive DC6, supplier Dow Corning

c. Adhesive EPON 828/Versamid 140, suppliers Shell/General Mills.

d. Adhesive Hysol 9395; supplier Dexter-Hysol

e. CV2566, supplier McGhan Nusil

f. 966 transfer tape, supplier 3M

XST-146//R

The Contractor shall list any common materials/adhesives which are not compatible with the tank surface, in the Handling Precautions Document.

XST-147//A

The maximum mass of attached thermal hardware, including blanket, shall be 1.0 kg on each tank. This shall be considered in analysis and during qualification vibration testing.

4.3.4.4 Interface with Ground Support Equipment (GSE)

XST-149//R

In the case of special handling or operating precautions being necessary these shall be included in the Contractor’s handling and transportation procedures.

4.4 Reliability

XST-151//A

Reliability of operation shall be considered of prime importance in the design and manufacture of the equipment. Each equipment shall meet the requirements of AD/2.1(a) and shall have a reliability figure of better than 0.99999 at the upper confidence level of 60%, this being the probability that the equipment shall satisfy the mission as defined in this specification.

4.5 Maintainability

XST-153//R

Each equipment shall be designed to require a minimum of special tools and test equipment to maintain calibration, perform adjustments and accomplish fault identification.

4.6 Design and Construction

4.6.1 Materials, Parts and Processing

XST-166//R

Each material, part and process shall be controlled by a detailed specification in accordance with the product assurance requirements specification and shall satisfy the applicable requirements of AD/2.1(a).

4.6.1.1 Moisture and Fungus Resistance

XST-168//R

Materials that are nutrients to fungi shall be avoided. Where used, and not hermetically sealed, they shall be treated with a suitable fungicidal agent.

4.6.1.2 Corrosion of Materials

XST-170//R

• Stress Corrosion Sensitivity


Page 20 of 64



Metals and alloys which are susceptible to stress corrosion cracking shall not be used unless approved by the Customer. Any such materials shall be highlighted in the materials list. Heat treating of alloys to obtain non-stress-corrosion sensitive conditions is allowed.

XST-171//R

• Corrosion Resistance

Materials shall be corrosion resistant type or suitably treated to resist corrosive effects likely to result from exposure to the environmental conditions specified herein.

Protective coating shall not crack, chip, peel or scale with age when subjected to the environmental extremes specified.

4.6.1.3 Magnetic Materials

XST-173//R

Magnetic materials shall not be used, unless approved by the Customer.

4.6.1.4 Ceramic Materials

XST-175//R

Ceramic materials or coatings that may crack or break under any combination of operating conditions or environments specified herein shall not be used.

4.6.1.5 Seals

XST-177//R

No elastomeric seals shall be used. The tank shall be of an all welded construction.

4.6.1.6 Standard and Commercial Parts

XST-181//R

Standard and commercial parts may be used if they do not degrade the reliability of the equipment and are in accordance with the requirements for approved materials and parts as defined in AD/2.1(a).

4.6.1.7 Finish

XST-183//I

The surface of the equipment shall be adequately finished to prevent deterioration from exposure to the specified environments that might jeopardise fulfilment of the specified performance.

XST-184//R

No cadmium or zinc plating shall be used on any components.

4.6.1.8 Contamination and Cleanliness

4.6.1.8.1 Contamination

XST-187//T

Operation of the equipment shall not result in the release or generation of particles entering the fluid passage or being exhausted externally to the equipment.

XST-188//T,R

The interior of the equipment shall be designed and fabricated to facilitate cleaning and prevent the entrapment of contaminants.

XST-189//I

Equipment shall contain no chips, slag, particulate matter, oil, grease, liquid or other foreign material.


Page 21 of 64



4.6.1.8.2 Cleanliness

XST-191//I

The equipment shall be assembled under cleanroom conditions, (AD/2.3(f)) Class 100,000 or better. This requirement may be relaxed, subject to the Customer approval, provided that the equipment internal design is such that the inside is readily cleanable. In this case the tank shall be manufactured in conditions which are as clean as possible and then precision cleaned prior to ATP cleanliness verification.

XST-196//I,R

The cleanliness verification fluid sample 100 ml of IPA to AD/2.3(a), or 100 ml per 929 cm2 (1 ft2) of internal surface area, whichever is the greater.

XST-639//T,I

All liquids shall be removed by flushing with Isopropyl Alcohol per AD/2.3(a), and then purged with Nitrogen AD/2.2(c) (or some other inert gas in accordance with AD/2.2(b), (d) or (f)), with hydrocarbon content < 40 ppm. The water dew point shall be less than -65°F.

XST-194//I,R

Flight equipment shall not be subject to exposure to any liquids other than Isopropyl Alcohol per AD/2.3(a), except as explicitly approved by the Customer (see also XST-201 below).

XST-192//T

All equipments shall be measurably clean to equal or better than the levels shown below. A sample (as described below) taken after passage through the equipment shall not exceed the listed particle count or distribution. The flushing media shall be Isopropyl Alcohol per AD/2.3(a)

XST-193//

Particle Size Maximum Allowable Count per first 100 ml

Over 100 microns None

51-100 microns 5 max (non-metallic)

25-50 microns 50 max

Less than 25 microns No silting

Non Volatile Residue (NVR) Less than 1mg/100ml

XST-640//I

The equivalent particle size of any particle is its maximum dimension (i.e. fibre length for fibres).

XST-195//T,A

After all cleaning procedures have been completed, the level of chemical contaminants retained in the equipment shall be such that correct functioning shall not be impaired or compromised throughout the operational lifetime.

4.6.1.9 Fluid Compatibility

XST-198//A,S

All equipment shall be compatible with the working and test media of XST-38 (excluding IPA) for the lifetimes quoted in this specification without performance degradation or increase in external leakage.

XST-200//A,S

The equipment shall also be compatible with the test media of XST-38 (b) including IPA, cleanroom air and any fluids used by the Contractor to test, clean or dry the equipment


Page 22 of 64



XST-201//R

All fluids used shall be agreed by the Customer.

XST-202//R

The use of halogenated solvents in contact with titanium alloys is expressly prohibited.

4.6.1.10 Outgassing

XST-204//R

Outgassing shall comply with the requirements of AD/2.1(a), except where essential for the design, test or operation of the tank, and with written agreement from the Customer.

4.6.1.11 Workmanship

XST-212//T,I

Workmanship shall be executed such that the design standard is not degraded or changed. At all points in the manufacture, production, integration, test, handling, storage and transportation, special steps shall be taken to maintain the design standard. The skill level of personnel is to be such that all aspects of workmanship shall ensure retention of the high reliability standards, with particular attention to the following:

• Free from blemishes, burrs, and sharp edges.

• Required tolerances on dimensions.

• Compliance with designed radii of fillets.

• Adequate and correct marking of parts and assemblies.

• Thoroughness of cleaning, soldering, welding, brazing and finishing.

• Freedom from oxidation, cracks, undercuts, lack of fusion, incomplete penetration and sharp edges.

• Freedom from paints, dyes and grease.

• Alignment of parts and assemblies, in accordance with specified requirements.

• Condition of the composite surface, paying particular attention to impact and other damage.

4.6.1.12 Non-Destructive Inspection

XST-214//T,A

The Contractor shall establish a fracture control/quality assurance programme for Non-Destructive Inspection (NDI) of the equipment, to be implemented during progressive build stages. This programme is subject to the Customer approval.

XST-215//T,A

The Contractor’s NDI programme shall encompass the safety related inspection requirements of Section 4.7.

4.6.1.13 Dissimilar Metals

XST-217//R

Contact of dissimilar metals with each other as defined in AD/2.2(i) shall be avoided wherever possible. Protection against electrolytic corrosion which can result from such contact shall be provided by surface treatment of the metals. Dissimilar metal contact shall be approved by the Customer.


Page 23 of 64



4.7 Safety

4.7.1 General

XST-226//R

All equipments shall be designed and fabricated with compatible materials in such a manner that all hazards associated with the equipment are eliminated or minimised and controlled.

XST-227//R

The equipment shall be designed to comply with the requirements of Section 4.1.

XST-228//R

Equipment safety related inspection and documentation shall comply with the requirements of this specification and of AD/2.1(a), (b), (d), (g) and AD/2.2(a), (g), (h) and AD/2.3(d), (g), (i), (j), (k), (l)

4.7.2 Toxic or Hazardous Materials

XST-230//R

Where toxic or hazardous materials are used in equipment, that equipment shall bear a label that identifies the hazardous source, e.g. "Warning - this unit contains ...".

XST-231//R

In addition the following hazard reduction criteria shall be implemented.

• The provision of warning notes in manufacturing documents.

• Special handling constraints and procedures.

• Scrap disposal controls.

4.7.3 Handling, Installing and Operating Limitations/Precautions

XST-235//R

Limitations and precautions necessary when handling, installing and operating equipment shall be detailed in the Contractor’s Handling/Transportation Procedures.

XST-236//A,R

Separate safety documentation shall be supplied (i.e. Safety Procedures and Hazard Analysis documents).

4.8 Thermal Properties

XST-238//T,A

The thermal conductivity between the tank shell and the mounting interface, and for the tank thermal capacitence, shall be calculated or measured, and advised to the Customer.

XST-239//A

The mounting interface shall be designed to provide the greatest possible thermal barrier.


Page 24 of 64



5 PRODUCT ASSURANCE

5.1 PA Requirements

XST-1632//T,A,I,R

The Xenon Tank shall be designed, manufactured and tested in accordance with the PA requirements specified in AD2.1(a). All products supplied against this specification shall be as safe as reasonably possible, and assessed in accordance with ECSS-Q-40B.

Documentation shall be supplied which addresses safety and EMC risks.

Safety warning labels are to be attached as appropriate.


Page 25 of 64



6 VERIFICATION AND TEST REQUIREMENTS

6.1 General requirements

6.1.1 Responsibility for Inspection and Test

XST-244//T,A,I,R

Unless otherwise specified in the contract or purchase order, the Contractor is responsible for the performance of all inspection and test requirements as specified herein.

6.1.2 Quality Assurance Programme

XST-246//R

The Contractor shall have or shall establish and implement a Quality Programme that complies with the requirements of AD/2.1(a).

6.1.3 Surveillance, and Witness of Inspection and Test

XST-248//T,R

The Customer shall be given access to the Contractor's facilities at all times in order to inspect the Contractor's quality control system and the records specified to be maintained therein. The Contractor shall ensure that appropriate arrangements are made for access to lower tier Vendor's facilities/test houses where critical operations are to be performed.

XST-249//T,I

the Customer (or their nominated representatives) reserve the right to witness, perform, or review the tests or documentation of any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements.

XST-250//R

The Contractor shall notify the Customer at least 2 weeks and subsequently 48 hours prior to the commencement of the qualification or acceptance test phases to enable representation by the Customer and witnessing of any or all tests as considered necessary by the Customer.

6.1.4 Preproduction Sample

XST-252//I,R

Prior to manufacturing of a new equipment batch, the manufacturer shall verify the use of the same materials, techniques and processes as are applicable to the unit referred to in Section 6.2.3.1.

6.1.5 Classification of Inspection and Test

XST-254//T,I

The examination and testing of the equipment shall be classified as follows:

• Qualification Inspection and Testing (Section 6.2.3.2)

• Acceptance Inspection and Test (Section 6.2.2.2)

• Preparation for delivery Inspection and Test (Section 6.5)

6.2 Verification of Compliance

XST-256//T,A,I

Compliance with the requirements of Section 3 shall be verified by acceptance inspections and tests, qualification, or analysis as stated in Section 6.2.1.2.


Page 26 of 64



XST-257//R

The method of verification of all parts of Section 2, Section 3 and Section 6 of this specification shall be presented in a Design Verification Matrix Report to a format defined by the Customer in the Statement of Work.

XST-258//A,R,S

The equipment Contractor shall provide positive verification from analysis, trials or in service experience, that the fluid compatibility of the equipment meets the requirements of Section 4.6.1.9

XST-259//I

At the discretion of the Customer, if the verification of compliance with Section 4.6.1.9 is not conclusive, further testing prior to and as part of Qualification to Section 6.2.3.2 shall be required.

6.2.1 General

6.2.1.1 Acceptance Inspections and Tests

XST-262//T,I

The applicable paragraphs of Section 3 shall be verified by performing acceptance inspections and tests in accordance with Section 6.2.2 on each deliverable equipment.

XST-2097//

The equipment shall be compatible with system level testing when pressurised to the Contractors recommended minimum pressure (tank empty)

6.2.1.2 Qualification

XST-264//

Qualification of the equipment to meet the requirements of Section 3 may be demonstrated as specified below. A combination of the following methods may be used to demonstrate qualification, subject to the Customer approval.

XST-265//I

• Qualification Inspection and Tests

Design Verification of the equipment shall be established by performing the qualification inspections and tests detailed in Section 6.2.3, in accordance with AD 2.1(d) and AD2.1(i). The units shall not subsequently be used on a flight spacecraft.

XST-266//S

• Qualification by Similarity

If the Contractor can demonstrate by analysis that the proposed equipment is similar in design, construction and performance to existing space qualified equipment and that previous qualification covers all or part of the performance and environmental requirements of Section 3, then the Contractor may offer "Qualification by Similarity" against the relevant requirements' Qualification testing may be then omitted subject to the Customer approval.

XST-267//A

• Qualification by Analysis

Where analysis is proposed to demonstrate compliance with any of the requirements of this specification, this shall be subject to the Customer approval.


Page 27 of 64



6.2.2 Acceptance Inspection and Test

6.2.2.1 Test Sample

XST-270//T

Each deliverable unit produced in accordance with this specification, shall be subjected to the acceptance tests specified in Section 6.2.2.2.

XST-271//T

Each unit shall be clean prior to entering acceptance testing.

6.2.2.2 Acceptance Tests Required (Minimum)

XST-273//T

Acceptance inspection and tests shall be conducted in the following sequence, unless otherwise agreed by the Customer, subject to verification and agreement of qualification status:

Test Sequence

Test Description Section number

1 Inspection and mass Section 6.4.1

2 Internal Volume Section 6.4.5

3 Proof Pressure Test Section 6.4.2

4 Visual Inspection + permanent set determination

Section 6.4.5

5 Vibration Section 6.4.3

6 Visual Inspection Section 6.4.14

7 External Leakage Section 6.4.4

8 Non-Destructive Inspection Section 6.4.13

9 Visual Inspection Section 6.4.14 and Section 6.4.1.1

10 Cleanliness Section 6.4.6.2

11 Data Review Section 6.4.15

6.2.2.3 Failure Criteria

XST-275//T,I

The unit shall exhibit no failure, malfunction or out-of-tolerance performance degradation as a result of acceptance inspections and tests specified in Section 6.2.2.2. Any such occurrence shall be cause for rejection.

6.2.2.4 Acceptance Tests Report

XST-277//R

Following completion of acceptance tests on each unit, a test report shall be prepared evaluating results of tests in accordance with Section 6.6.

6.2.2.5 Test Limitations

XST-279//T,I

The acceptance inspection and test shall not degrade the unit performance or expose the assembly to test levels or conditions which could induce a subsequent failure.


Page 28 of 64



6.2.2.6 Rejection and Re-Submittal

XST-281//T,I

Any failure, malfunction or out-of-specification conditions which occur during the test programmes shall result in immediate stoppage of the test to avoid the possibility of further hazard to equipment or personnel. Testing shall not be recommenced unless the condition has been properly investigated and the proposed recovery and corrective action has been reviewed and approved by the Customer. In the case of a failure requiring replacement or rework, the test programme shall be repeated in its entirety except as mutually agreed between the Contractor and the Customer.

6.2.3 Qualification Inspection and Test

6.2.3.1 Test Sample

XST-284//T,R

Prior to the commencement of qualification testing, sufficient testing shall have been performed on representative development units to give both the Contractor and the Customer confidence to proceed. This shall be specified in the Contractor’s Development Test Plan.

XST-285//T

Qualification testing shall be carried out on flight standard units which have been manufactured in accordance with the requirements of this specification. The units shall be identical to the units that will be supplied for flight spacecraft.

XST-286//T

During dynamic testing the qualification tank(s) shall be fitted with an external representative blanket(s) to simulate the Customer thermal blanket. The additional mass of the thermal hardware is defined in XST-147.

XST-287//T

Test sequence 1 - The tank(s) shall complete acceptance testing (less acceptance random vibration, TBC) to Section 6.2.2 and then shall be subjected to all the qualification tests specified in XST-292. The tank(s) shall be pressurised to rupture.

XST-288//T

Test sequence 2 - The necessity for this testing can be deleted if the leak before burst requirement can be demonstrated by analysis and similarity to a previously tested unit. The tank shall be subjected to full acceptance testing (XST-268), and then shall be subjected to a leak before burst test programme to demonstrate compliance with AD/2.3(i) as agreed with the Customer. This testing, if necessary, should be per formed in addition to test sequence 1. This shall necessitate the testing of a second qualification tank.

XST-289//I

All non-flight tanks shall be identified “NOT FOR FLIGHT USE”.

6.2.3.2 Qualification Tests Required (Minimum)

XST-291//T,I

As a minimum, the qualification inspection and tests listed below shall be conducted in the following sequence, unless agreed by the Customer:


Page 29 of 64



XST-292//T

Test Sequence 1

Test Sequence


1 Acceptance Test (less vibration and cleanliness), including C of G

Section 6.2.2

2 Tank full random/sine vibration Section 6.4.3


4 **Empty vibration Section 6.4.3


6 Cleanliness Verification Section 6.4.6.1

7 Constant acceleration Section 6.4.8


*9 Internal Pressure Cycling Section 6.4.11

*10 Thermal Pressure Cycles (See Figure 6.4-1) Section 6.4.9

11 Environmental Temperature Section 6.4.10



14 Expulsion Test Section 6.4.12

15 Shock Section 6.4.17



18 Burst Test Section 6.4.6.2


*Items 9 & 10 can be swapped in order during the sequence

** Empty or minimum recommended pressure as agreed with Contractor

XST-293//

Test Sequence 2

Test Sequence


1 Acceptance Test Section 6.2.2

2 Leak Before Burst Test Programme Section 6.4.16



Page 30 of 64



6.2.3.3 Failure Criteria

XST-295//T

The unit shall exhibit no failure, malfunction or out of tolerance performance degradation as a result of Qualification inspections and tests specified in Section 6.2.3.2. Any such occurrence shall be cause for rejection and refusal to grant qualification

6.2.3.4 Qualification Tests Report

XST-297//T

Following the completion of qualification tests, a test report containing the test results, together with an evaluation and comparison with the requirements, shall be delivered in accordance with Section 6.6.

6.2.3.5 Rejection and Re-Submittal

XST-299//T,I

Any failure, malfunction or out-of-specification conditions which occur during the test programmes shall result in immediate stoppage of the test to avoid the possibility of further hazard to equipment or personnel. Testing shall not be recommenced unless the condition has been properly investigated and the proposed recovery and corrective action has been reviewed and approved by the Customer. In the case of a failure requiring replacement or rework, the test programme shall be repeated in its entirety except as mutually agreed between the Contractor and the Customer.

6.2.4 Protoflight Model (PFM) Inspection and Test

6.2.4.1 Test Sample

XST-1697//T

The first deliverable unit produced in accordance with this specification, shall be subjected to the PFM tests specified in XST-1699

XST-1698//T

Each unit shall be clean prior to entering PFM testing.

XST-1699//T

The PFM inspection and tests shall be conducted in the following sequence, unless otherwise agreed by the Customer, subject to verification and agreement of qualification status:

** Tank full.

Test Sequence


1 Inspection and Mass Section 6.4.1

2 Internal Volume Section 6.4.5

3 Proof Pressure Test Section 6.4.2

4 Visual Inspection + permanent set determination Section 6.4.5

5 ** Vibration Section 6.4.3





10 Cleanliness verification Section 6.4.6.2


Page 31 of 64



Test Sequence



6.3 Test Conditions and Test Equipment

6.3.1 Ambient Conditions

XST-302//I

Unless otherwise specified herein, all measurements and tests shall be made within the following ambient conditions:

• Temperature: 23°C ± 5°C

• Relative Humidity: 60% maximum

• Pressure: 760 ± 25 mm mercury

XST-303//I

All pressures and temperatures shall be recorded unless specified otherwise.

XST-304//I

Whenever these conditions shall be closely controlled in order to obtain reproducible results, a reference temperature of 23°C, a relative humidity of 50% and an atmospheric pressure of 760 mm of mercury respectively shall be used, together with whatever tolerances are required to obtain the desired precision of measurement.

XST-305//I

Test facilities with uncontrolled environments may be used with the Customer approval, provided that:

• The conditions shall not adversely affect the tank performance

• The conditions shall not compromise the internal cleanliness of the tank.

6.3.2 Test Equipment

XST-307//I

The apparatus used in conducting tests shall be capable of producing and maintaining the required test conditions as defined in the applicable test procedures.

XST-308//A,I

Test fixtures with representative mountings (ref AD/2.1(f)) shall be used to support the units during dynamic testing.

XST-309//I

During pressurisation testing, the tank shall be mounted such that the tank expansion is allowed and the composite is protected from damage.

6.3.3 Tolerance of Test Conditions (Excluding Ambient)

XST-311//I

The maximum allowable tolerances of test conditions (inclusive of accuracy of instruments) shall be as follows unless otherwise stated in this specification.

a) Temperature: max temp. -0°C +3°C

min temp. +0°C -3°C

b) Pressure: General +5%, -0


Page 32 of 64



When devices are used such as ion gauges, whose accuracy depends on location and type of gauge and which, therefore, can only be specified in test procedures, the actual achieved pressure must be equal to or lower than that specified.

c) Relative humidity: ± 5%

d) Acceleration: +10%, -0

e) Vibration level: sinusoidal +10%, -0% “g” peak.

(Random) power spectral density 90 - 700 Hz +2, -1 dB

otherwise ± 3dB

(Random) overall acceleration (rms) +10%, -0

Lower is acceptable only if as result of an agreed notching policy

f) Frequencies: ± 2% ± 0.5 Hz below 20 Hz.

g) Time: +5%, -0%

h) Acoustic pressure: +/-3, -0 dB in each octave band

+2, -0 dB for OASPL

i) Force (static tests): -0, +5%

j) Dry mass: ± 5 gram

k) Shock test tolerance: From 100 Hz up to 1kHz: +0/+3 dB

From 1 kHz up to 10kHz: +0/+6 dB

l) Volume measurement ± 0.2 litres

6.3.4 Accuracy of Measurement

XST-313//I

The accuracy of all instruments and test equipments used to control or monitor the test parameters, whether located at the Contractor's testing laboratory or at a Contractor's plant, shall be verified periodically by calibration.

The Contractor shall provide an equipment calibration plan, for agreement with the Customer, prior to the commencement of testing.


Page 33 of 64



6.3.5 Product Test Controls

XST-317//I

Controls for item configuration, testing item documentation, non-conformance and failure reporting, the Customer and the Customer' Customer inspection and test surveillance shall be as specified in AD/2.1(a).

6.4 Test Methods

XST-319//T

The following tests shall be carried out in the sequence specified in Section 6.2.2.2 and Section 6.2.3.2.

6.4.1 Inspection/Examination

XST-321//I

The unit shall be inspected by Contractor Quality Assurance for the applicable requirements listed below in accordance with this specification and approved Contractor standards. Mechanical inspection criteria shall be as specified on the applicable drawings.

6.4.1.1 Dimensions

XST-323//I

The unit shall be measured for compliance with the overall dimensions and mounting requirements of AD/2.1(c).

XST-324//I

The tank expansion shall be measured during pressurisation to MEOP × 1.25

XST-325//I

The Contractor shall determine whether the expansion characteristics are changed when the tank is subjected to the Xenon mass loading.

6.4.1.2 Identification and Marking

XST-327//I

The unit shall be inspected for compliance with the marking requirements of XST-1397 and AD/2.1(c).

6.4.1.3 Materials and Processes

XST-329//I,R

The unit shall be visually inspected and manufacturing records and drawings shall be reviewed to verify that materials and processes used conform to specified requirements. Inspection shall verify the following as a minimum:

• Completeness of product.

• Conformance to drawings or other manufacturing documents.

• Completion of all steps in the manufacturing process and proper certification.

• Workmanship, assembly and fit.

• Materials, parts and finish.

• Liner welds and membranes shall have been inspected during build by a the Customer approved method of Non-Destructive Inspection (NDI) such as X-ray (AD/2.2(h) and AD/2.3(d)), fluorescent penetrant (AD/2.2(g)), ultrasonic, eddy current or a combination of these methods in accordance with the requirements of Section 4.6.1.12.


Page 34 of 64



• There shall be no evidence of nicks, scratches, cracks, impacts, burrs or any defect (or physical imperfection) which would adversely affect the unit's performance, or compromise cleanliness.

• The composite surface shall be inspected to confirm no damage by an inspector certified to Level II of AD/2.3(g) or equivalent.

6.4.1.4 Physical Measurements

XST-331//I

The following physical measurement shall be performed:

• The weight of each unit shall be measured.

• The centre of gravity and the moment of inertia of the qualification unit shall be recorded. Alternatively, subject to the Customer approval values of centre of gravity and inertia may be calculated.

6.4.2 Proof Pressure Test/Screening Test

XST-333//T

The unit shall be subjected to one pressure cycle to the proof pressure specified by XST-57 above ambient pressure. The unit shall be mounted and restrained as it will be in the spacecraft. The time at proof pressure shall be not less than 7½ minutes. The proof test shall be performed with Nitrogen or Helium.

XST-334//I

Unit dimensions before, during and after proof testing shall conform to those specified in AD/2.1(c). Evidence of permanent set greater than 0.2 per cent, as evidenced by a volume change of 0.6 per cent shall be cause for rejection. Alternatively, permanent set may be determined by external measurement of the tank.

XST-335//T

The above proof pressure test shall be carried out at the worst temperature case (acceptance or qualification level as applicable) specified in Section 3.2.3.2. Test tolerances shall be +5%, -0 bar.

XST-336//T

Subject to the Customer approval the Contractor may test at ambient temperature if the test pressure is factored up to give the equivalent dynamic and static tank worst case qualification thermal load conditions, (or analysis is supplied to establish that the thermal conditions do not adversely affect the equipment or its performance).

6.4.3 Vibration Tests

6.4.3.1 General Requirements

Refer to AD2.1(i) Section 9.2.1 for vibration procedures and test set-up.

XST-341//T

The unit shall meet the stiffness requirement of Section 4.3.3.

Axis definition is specified in AD/2.1(c). See XST-2095

XST-345//T

The equipment shall be mounted to a test fixture simulating the mechanical mounting interface with the spacecraft.


Page 35 of 64



XST-348//T

Qualification shall cover the following cases:

1). the tank pressurised to MEOP, and containing the maximum xenon load specified in XST-25

2). the tank empty*

XST-349//T

The Contractor shall demonstrate that all Xenon load levels between (1) and (2) are covered by the qualification testing.

*Note: Any specific requirements relating to a minimum recommended pressure to be applied for vibration testing should be clearly stated and shall be included in the Contractor’s handling Specification / user manual.

XST-351//T

If the two lateral axes can be shown by symmetry to sustain identical loads, then one lateral axis may be used for qualification vibration. The different test cases shall use different lateral axes.

Below is a sketch showing the Xenon Storage Tank axis in relationship to the spacecraft axis.

XY

Z

Spacecraft coordinate system

Xenon tank coordinate system

OUTLET BOSS SUPPORT DIRECTIONS

(longitudinal and lateral)

INLET BOSS SUPPORT DIRECTIONS

(lateral only)

XST-352//T,A

The testing or analysis shall also demonstrate that the tank meets the stiffness requirement (Section 4.3.3) with any load up to the maximum xenon load specified in XST-25.

XST-353//R

Any Xenon mass simulant used shall be approved by the Customer.

XST-354//T

A cleanliness verification in accordance with Section 6.4.6 shall be performed prior to and immediately after the qualification vibration testing.


Page 36 of 64



6.4.4 Leakage Tests

XST-366//T

The tank shall be subjected to helium leak test at MEOP.

XST-367//T

The total external leakage shall not exceed the limit specified in Section 3.2.1.2.

6.4.5 Internal Volume

XST-369//T

The internal volume of the unit shall be recorded before and after the proof pressure tests of Section 6.4.2.

XST-370//T

Evidence of permanent set greater than 0.2 per cent, as evidenced by a volume change of 0.6 per cent shall be cause for rejection.

XST-371//T

For acceptance test, the post proof volume test may be omitted if it can be shown that the requirement can be met by dimensional checks pre and post proof.

XST-372//T

Internal volume at MEOP shall be determined and shall comply with the requirements of Section 3.2.1.3. This may be determined by measuring ambient volume and calculating expansion.

XST-373//T

Internal volume with the tank unpressurised shall also be determined and recorded.

XST-374//T

Volume measurements shall be normalised to +20°C (+68°F) temperature conditions.

6.4.6 Cleanliness Verification

6.4.6.1 Qualification Cleanliness

XST-377//T

The purpose of this test is to verify that the unit still meets the cleanliness requirements of Section 4.6.1.8 after completing any preceding tests.

XST-378//T,I

The unit should be clean prior to entering qualification testing.

XST-379//I

The unit should not be subjected to any cleaning procedure immediately prior to this Cleanliness Verification or after any preceding tests (unless otherwise stated).

XST-380//T

The unit shall be flushed with the specified quantity of Isopropyl Alcohol to AD/2.3(a).

XST-381//T

A 100 ml fluid sample, or 100 ml of fluid per 929 cm2 (1 ft2) of internal surface area, whichever is the greater, shall be used. The effluent shall be withdrawn from the unit for particle count and NVR assessment.

XST-382//T

The particulate count of the total effluent sample when tested using a procedure approved by the Customer, shall meet the requirements of Section 4.6.1.8.


Page 37 of 64



XST-383//T

In the event that the equipment fails to meet the specified requirement on the first cleanliness verification test, the Contractor shall inform the Customer of the failure and particulate count, and await the Customer approval before subjecting the equipment to additional cleaning, cleaning verification tests or any other tests.

XST-384//T

Following the cleanliness verification test, the unit shall be gas purged and thoroughly dried in vacuum to the Customer approved procedure to remove all traces of residual liquid.

XST-385//T

The unit shall then be protected against contamination in accordance with Section 6.5.1.1 prior to removal from the contamination controlled area.

6.4.6.2 Acceptance Cleanliness

XST-387//T

The unit shall be clean prior to entering acceptance testing.

XST-388//T

The unit shall meet the requirements specified in Section 6.4.6.1. Final cleaning is to be performed with IPA.

XST-389//T

Following the cleanliness verification test, the unit shall be gas purged and thoroughly dried to the Customer approved procedure to remove all traces of residual liquid.

XST-390//T

The dryness shall be verified to meet the requirement of Section 4.6.1.8.

XST-391//

The unit shall then be protected against contamination in accordance with Section 6.5.1.1 prior to removal from the contamination controlled area.

6.4.7 Burst Test

XST-393//T

The Contractor shall obtain the Customer permission before commencing burst test.

XST-394//T

The unit shall be subjected to the burst pressure specified in Section 4.1.3 above ambient pressure.

XST-395//T

The above pressure shall be applied at a uniform rate and the required pressure shall be reached in not less than 20 seconds.

XST-1688//T

The required burst pressure level shall be held for 2 minutes before continuing to rupture.

XST-396//T

Once burst pressure is reached the pressurisation shall continue until the tank ruptures.

XST-397//T

The above burst pressure shall be carried out at maximum temperature (acceptance or qualification level as applicable) specified in Section 3.2.3.2.


Page 38 of 64



XST-398//T

Subject to the Customer approval, the Contractor may test at ambient temperature if the test pressure is factored up to give the equivalent dynamic and static tank worst case qualification thermal load conditions (or analysis is supplied to establish that the thermal conditions do not adversely affect the equipment or its performance).

XST-399//T

The unit shall not rupture at or below the specified burst pressure level.

XST-400//I

Following rupture the tank shall be subject to laboratory examination to confirm the failure modes of the liner and composite.

6.4.8 Constant Acceleration

XST-402//T

The unit shall be subject to the constant acceleration levels specified inAD2.1(d), applied in the three orthogonal axes as defined in AD/2.1(c).

XST-403//T

The differing acceleration levels imposed by the test equipment across the unit being tested shall not vary from the specified acceleration by more than ± 10 per cent.

XST-404//T

The acceleration specified shall be applied at the location of the centre of gravity of the dry unit.

XST-405//T

The minimum duration of the test shall be one minute for each acceleration direction.

XST-406//T

During the test the unit shall be mounted in a test fixture simulating the mechanical mounting interface with the spacecraft and pressurised/loaded to cover the cases specified in XST-348.

XST-407//I

The unit shall be inspected after each test for evidence of physical damage.

XST-1687//T

The tests within this section may be substituted by a sine dwell test subject to Customer requirement.

6.4.9 Thermal Tests (Qualification)

XST-413//T

• Thermal Pressure Cycle (Ambient External Pressure)

The unit shall undergo thermal pressure testing to demonstrate compliance with the requirements of Section 3.2.3.2 (Qualification Temperature/Pressure Envelope). The number of proof cycles should be split to encompass at least 1cold (-30oC) and 1hot (70 oC) as per Figure 6.4-1.

The testing shall also include demonstration of the following requirements:

i) Section 3.2.3.4 Normal Operation (Post Acceptance Testing) Cycle Life multiplied by a factor not less than 2.


Page 39 of 64



ii) Section 4.1.5 Duration above MEOP. (Subject to the Customer approval the specified duration above MEOP may be consolidated into an equivalent test duration at proof pressure).

iii) XST-785 and XST-786. Qualification levels of Rate of Change of Internal Pressure for Pressurisation and Depressurisation Cases.

iv) Environmental temperatures. (The rate of change of environmental temperature shall not exceed 2°C/minute).

The unit shall be inspected after the test to confirm no physical damage has occurred as a result of the test.

Prior to the above testing the Contractor shall provide a test plan to the Customer for approval.

XST-414//T

• Thermal Vacuum Test

The unit shall be tested in a thermal vacuum environment having a pressure of 1 × 10-5 torr or

less. The vacuum can be omitted if it can be shown that it has no adverse effects on the equipment or its subsequent performance.

XST-415//T

The sequence, unit/environmental temperatures and pressures for the qualification test are shown in Figure 6.4-1.

XST-479//T

TANK/FLUID TEMPERATURE -30°C

TANK/FLUID TEMPERATURE

70 °C

Proof *

Pressure

Time

TANK/FLUID TEMPERATURE -30°C

TANK/FLUID TEMPERATURE

70 °C

Proof *

Pressure

Time Figure 6.4-1: Tank Thermal Cycle


Page 40 of 64



Notes: 1. Pressurisation and depressurisation rates as per Section 3.2.1.7 (Qualification Levels)

2. Dwell time at proof 7½ mins

General: 1. Chamber pressure < 1 ´ 10-5 torr

2. dT/dt < 2°C/min (Environmental Temperature)

3. Temp. tolerances: +3/-0 > T ambient > -3/+0

4. Refer to Section 6.4.9 for test detail

6.4.10 Environmental Temperature (Non-Operating)

XST-417//T

The empty and dry unit shall be mounted in a climatic chamber, and nitrogen at ambient pressure and temperature applied to the inlet connection. With the chamber at ambient pressure, the chamber temperature shall be raised to 70°C and the relative humidity adjusted to between 70% and 75% RH. This condition shall be maintained for 8 hours.

XST-418//T

Immediately following XST-417, the temperature shall be reduced to -40°C and maintained at this condition for 16 hours.

XST-419//T

The unit shall be examined for evidence of deterioration following the completion of XST-417 and XST-418.

XST-420//A

This test can be omitted if it can be shown by analysis that these environments do not adversely affect the equipment or its subsequent performance.

6.4.11 Internal Pressure Cycling

XST-422//T

The tank shall be subjected to the following pressure cycles from ambient pressure to the pressure specified below.

XST-423//T

The cycles specified below cover two times the cycle life specified in Section 3.2.3.4 plus acceptance test cycles (2 proof + not more than 10 MEOP).

XST-424//T

The unit shall be held at pressure for the minimum specified time on each cycle.

XST-837//T

The cycles quoted here are a total minimum required and can be made up with thermal pressure cycles as per Section 6.4.9.

XST-425//T

There shall be no evidence of damage as a result of these pressure cycles.

XST-426//T


Page 41 of 64



Minimum No of Cycles

Cycle Type Test Pressure Minimum Duration at Test Pressure

8 Proof XST-57 (note 1) 7½ minutes

14 Safety Proof XST-59 (note 1) 7½ minutes

50 (note 2) MEOP XST-19 3 minutes

6 Low Pressure MEOP × 0.64 3 minutes

10 Xenon Fill Internal Vacuum 3 minutes

100 In-orbit thermal 12 bar peak to peak (note 3)

3 minutes

XST-427//T

Note 1: Proof pressures to be factored up to account for the difference in material properties between test and maximum qualification temperature (70°C).

XST-428//T

Note 2: In accordance with requirement of AD/2.2a, the total number of cycles may include the 14 off MEOP x 1.1 + any additional MEOP cycle seen during the qualification testing excluding those in ATP (e.g additional leak checks)

XST-843//T

Note 3: Actual pressure levels shall be worst case in terms of damage which would result to the tank; these cycles may be omitted if the Contractor can demonstrate that they have no impact on crack propagation.

6.4.12 Expulsion Test

XST-430//T,I

With the unit initially pressurised internally with Xenon to MEOP carry out a depressurisation of the unit to ambient pressure using orifices to achieve rates which encompass the requirements of Section 3.2.1.7. During discharge monitor unit temperatures and discharge time. At the conclusion of the test the unit shall be inspected for damage.

XST-820//A,S

This test may be deleted if it can be shown that the tank will not be damaged after experiencing the temperatures as predicted in Section 3.2.1.6.

6.4.13 Non-Destructive Inspection (Tank Level Acceptance)

XST-432//I

The following inspections are in addition to those specified at Section 4.6.1.12 carried out during build.

6.4.13.1 Dye Penetrant (Exposed Metal Mounting Areas)

XST-434//I

The exposed metal areas around the pole mounts shall be subject to a dye penetrant crack detection inspection. Detection of a crack shall be cause for unit rejection.

6.4.13.2 Liner Inspection

XST-436//I

The tank shall be inspected to confirm that there is no evidence of liner buckling.

XST-437//I

This operation shall be performed immediately prior to the closure of any tank port.


Page 42 of 64



6.4.14 Visual Inspection

XST-439//I

The unit shall be subject to inspection to ensure no damage. The inspector shall be certified to Level II of AD/2.3(g) or equivalent.

6.4.15 Preparation for Data Review

XST-441//I

The unit shall be inspected following the testing for physical damage by Contractor quality assurance. Data taken during testing shall be compiled, required analysis and computations shall be performed and all test data shall be reviewed and certified by Contractor quality assurance. The quality data shall then be submitted to the designated the Customer representative for the review and approval as defined in the Statement of Work.

6.4.16 “Leak Before Burst” Test Programme

XST-443//T

The Contractor shall carry out a “Leak Before Burst” demonstration programme acceptable to the Customer and meeting the requirements of AD/2.3(i) and Section 4.1.1.1.

6.4.17 Shock Test

XST-445//T

The unit shall be subjected to the shock spectrum identified in AD2.1(i) Section 9.2.1.7

XST-446//T,A

The shock input to the unit interface is defined below, unless shown by analysis that it is already enveloped by other test requirements:

XST-448//T

The response spectrum levels shall be applied in each of the three orthogonal axes.

6.5 Preparation for Delivery, Inspection and Test

XST-450//I

Examination of preservation, packaging, and marking shall be conducted to assure compliance with the requirements specified below.

6.5.1 Methods of Preservation and Packaging

XST-455//I

Unless otherwise specified in the contract or purchasing order, equipment procured to this specification shall be packaged, packed and marked for shipment as specified herein.

XST-456//I

A copy of the Contractor's handling/transportation and safety procedures shall be included with the equipment in an obvious and readily accessible position to facilitate reference before final stages of unpacking.

6.5.1.1 Retention of Cleanliness

XST-458//I

After cleaning, and while the unit is still in a controlled clean room area, tube ends shall be capped off or enclosed using anti-static Nylon material conforming to AD/2.3(c) cleaned to Level 1.

XST-459//I

Material shall then be secured in place with clean-room tape to a specification approved by the Customer. Tape shall not touch tube o.d. surface closer than 50 mm from tube end. The unit shall then be bagged using a 2 mil minimum anti-static Nylon (or the Customer approved material) inner


Page 43 of 64



bag cleaned to Level 1, per AD/2.3(c) and outer bagged with 4 mil minimum Nylon or Polyethylene transparent anti-static material cleaned to Level 2 per AD/2.3(c). Bag ends shall be heat-sealed closed; the inner bag shall be evacuated prior to heat sealing. An identification non-shedding tag shall be placed between the inner and outer bags, and shall display the following caution note as a minimum: "Open in a Contamination Controlled Area Only. Do not remove from inner bag unless in a Class 100,000 clean area".

6.5.1.2 Storage

XST-461//A

The unit shall be capable of being stored for a minimum of 5 years post delivery without requiring repair, maintenance or re-testing at the end of storage.

6.5.1.3 Protective Coverings

XST-463//I

The unit shall be provided with protective covering to prevent contamination during transportation outside clean areas and where necessary to protect against damage in handling.

XST-464//I

A humidity indicator shall be included within the protective covering.

XST-465//I

Mounting bearing faces, screw threads and stub tube shall be suitably protected.

6.5.2 Equipment Packaging

XST-467//I

Each sealed bagged unit shall be inserted into an equipment container.

XST-468//I

Additional cushioning material shall be used to fill all voids and prevent movement of the unit during handling and shipping.

6.5.3 Packing

XST-475//I

Any number of equipment containers shall be uniformly loaded into a shipping container.

XST-476//I

The shipping container shall provide protection for each equipment and equipment container during shipment and handling and shall meet the minimum packaging requirements of the common carrier (if so shipped) for safe transportation at the lowest rate to the point of delivery.

6.6 Documentation

XST-452//I

The documentation requirements are fully specified and defined in AD/2.1(a) and (b).

XST-482//

Appendix A - Load Spectrum

XST-483//

A1 Introduction

XST-484//A

The Load Spectrum presented here covers the xenon tank life after delivery to the Customer. Loads experienced by the tank after the initial flaw size has been established up to the time of delivery to the Customer, are additional to the load presented here and shall be included in the Contractor’s Fracture


Page 44 of 64



Mechanics Analysis. Contingencies for repeat testing and a safe life factor of 4 shall be applied to these pre-delivery loads.

XST-485//A

The spectrum of pressure cycles and inertia loads presented is to be used for the Fracture Mechanics analysis of the tank.

XST-486//T

The pressure, random and sine vibration cycles given include contingencies for repeat testing.

XST-487//T

The full spectrum shall be applied four times in order to satisfy the requirements of AD/2.3(i).

XST-494//

A2 Xenon Pressure and Vibration Test Cycles


Page 45 of 64



XST-495//

Test Description Pressure (bar)

No of Cycles Mechanical Environment

Freq. (Hz) Level Axes Duration per cycle

1 Low Pressure Leak Test MEOP × 0.375 1 - - - -

2 Proof (+MEOP Leak) Test MEOP× 1.25 + MEOP

1 Proof + 1 MEOP - - - 10 hrs >

MEOP

3 Low Pressure Leak Test Assume MEOP cycle 1 - - - -

4 Pre EVT Pressure Regulation test 60 bar (0.3 x MEOP) 1

5 He Leak Check MEOP × 1.1 1

6 Sine Vibration - Low Level NOTE 1 2 spectra 5 - 100 0.5 g Z 4 oct/min

7 - Qual. Level NOTE 1 2 spectra 5 - 100 XST-107 Z 2 oct/min

8 - Low Level NOTE 1 2 spectra / axis 5 - 100 0.5 g X & Y 4 oct/min

9 - Qual. Level NOTE 1 2 spectra / axis 5 - 100 XST-107 X & Y 2 oct/min

10 - Low Level NOTE 1 2 spectra / axis 5 - 100 0.5 g X & Y 4 oct/min

11 LVA separation pyro. Shock NOTE 1 2 - - - -

12 Acoustic/Random - Low Level NOTE 1 2 / axis 10 - 2000 -12 dB X/Y/Z 1 min

13 - Qual. Level NOTE 1 2 / axis 10 - 2000 XST-98 X/Y/Z 1 min

14 - Low Level NOTE 1 2 / axis 10 - 2000 -12 dB X/Y/Z 1 min

15 MEOP Leak Test (& CPS test) MEOP × 1.1 1 - - - -

16 Low Pressure Leak Test (Contingency for 1)

MEOP × 0.375 2 - - - -

17 Proof Test (Contingency for 2) MEOP× 1.25 + MEOP

1 Proof + 1 MEOP - - - 10 hrs >

MEOP

18 Low Pressure Leak Test (Contingency for 3) MEOP 1 - - - -

19 MEOP x 1.1 (Contingency for 5 to17)

MEOP × 1.1 2 - - - -

20 Launch Site – Xenon Loading Internal Vacuum 1 - - - 2 hours

maximum

21 Launch Site – Xenon Loading (contingency)

Internal Vacuum 1 - - - 2 hours

maximum

22 Launch Site Safety Check MEOP × 1.1 1 - - - 5 hrs >

MEOP

23 Launch Site Safety Check (Contingency)

MEOP × 1.1 1 - - - 5 hrs >

MEOP

24 Launch MEOP 1 spectrum / axis 5 – 100 80% of

XST-106 X/Y/Z 1 min

25 Acoustic/Random MEOP 1 spectrum / axis 10 - 2000 XST-104 X/Y/Z 1 min

26 LVA separation pyro. Shock MEOP 1/axis - - - - 27 In-orbit thermal cycles NOTE 2 50 - - - -

XST-496//T

NOTE 1 - The sine, acoustic and random vibration at spacecraft level shall be performed at the Contractors recommended minimum pressure baseline. However, to meet Customer specific requirements it could be performed at any pressure up to MEOP. The sine vibration, shock testing and the acoustic random tests are counted as a single pressure cycle. For the purpose of demonstration of safe life, this pressure cycle shall be assumed to be MEOP × 1.1.


Page 46 of 64



XST-1833//T

The tank shall be compatible with these load levels at any fill condition from empty up to the full Xenon load as defined in XST-25

XST-844//T,A

NOTE2 - These cycles have a 12 bar peak-tp-peak magnitude, and may apply at any point in the 0 to MEOP pressure range. The analysis shall consider the worst case actual pressures for these cycles.

XST-497//T

Items 25, 26 & 27, post launch activities, are a single pressure cycle covered by 22 or 23. i.e. Tank pressurised to 1.1 x MEOP for safety check, pressure reduced to MEOP for leak check and left at this pressure for launch - Single cycle to 1.1 x MEOP.

XST-498//I,R

* This minimum pressure is to be clearly stated by the Contractor and included in their handling specification / user manual for the tank.


Page 47 of 64



7 GDIR APPLICABILITY MATRIX

The following table lists the applicable requirements of the GDIR.

It contains, in the first column, the Local ID for each applicable GDIR requirement number.

The second column contains the GDIR Requirement number and the opening text of the requirement.

The third column defines the Applicability Y/N

The final column shows the intended verification method. If no method is shown it shall be assumed that verification is required and the method is TBD

Req No. Reference Applicability Verif. Method

2.1 Applicable Documents XST-1808 GDI-3994:

The following documents, of the latest issue, or o ... Y

2.2 Applicable Standards XST-1809 GDI-3993:

The following documents, of the latest issue, or o ... Y

2.2.1 ECSS 2.2.2 Military/Industrial 3.1.1 Lifetime XST-1385 GDI-35:

The equipment/subsystem shall meet the requirement ... Y TBD

XST-1386 GDI-38: Maintenance during storage shall be as limited as ...

Y A

XST-1387 GDI-53: The MTM equipment/subsystems shall be designed wit ...

Y T,A

XST-1388 GDI-48: Where the design margin on nominal lifetime is not ...

Y R,TBC

XST-1389 GDI-49: The lifetime of items which degrade shall be desig ...

Y R,TBC

3.1.2 Safety and Product Liability XST-1391 GDI-55:

The subcontractor shall comply to the applicable s ... Y A

3.1.4 Venting XST-1393 GDI-59:

The equipment/subsystem shall be able to operate w ... Y A,R

XST-1394 GDI-62: Structural members (honeycomb panels, in particula ...

Y R

3.1.5 Interchangeability XST-1396 GDI-70:

All spacecraft equipment/subsystems of the same pa ... Y R

3.1.6 Identification & Marking XST-1398 GDI-72:

The equipment hardware shall be identified with a ... Y I

XST-1399 GDI-73: The equipment/subsystem identification nameplate s ...

Y I

3.1.7 Accessibility/Maintainability & Ground Testing Requirements

XST-1401 GDI-82: The design of the equipment/subsystem, the positio ...

Y R

XST-1402 GDI-83: The equipment shall be designed to require a minim ...

Y R

XST-1403 GDI-84: No field maintenance, servicing or adjustment shal ...

Y R

3.1.8 Transportation, Handling and Storage


Page 48 of 64




3.1.8.1 Transport XST-1406 GDI-77:

The equipment/subsystems shall be transported usin ... Y R

XST-1810 GDI-78: The equipment/subsystem containers, covers (for op ...

Y R

XST-1407 GDI-79: The equipment/subsystem transport container shall ...

Y R

XST-1408 GDI-80: The equipment/subsystem storage container shall be ...

Y R

3.1.8.2 Equipment/Subsystem Packing XST-1410 GDI-90:

Where applicable blanking caps shall be fitted to ... Y I

XST-1411 GDI-91: All equipment shall be packaged to ensure that it ...

Y I

XST-1412 GDI-93: The specified item GSE shall follow as far as appr ...

Y I

3.1.8.3 Container Identification XST-1414 GDI-95:

Each container shall be labelled, tagged or marked ... Y I

XST-1415 GDI-96: In addition to the above, the container shall also ...

Y I

XST-1416 GDI-2267: Size of company labels on containers shall be agre ...

Y R

3.1.8.4 Handling XST-1418 GDI-98:

Equipment/subsystem weighing more than 10 kg shall ... Y R

3.1.10 Lubricants and Sealants XST-1420 GDI-103:

No lubricants or sealants shall be used without th ... Y R

XST-1811 GDI-3289: The spacecraft equipments/subsystems shall be able ...

Y A

XST-1812 GDI-3292: The equipment/subsystem shall be able to safely wi ...

Y A

XST-1813 GDI-3594: SEE in terms of transients are depending on applic ...

Y A

XST-1814 GDI-3595: The subcontractor shall perform a displacement ana ...

Y A

XST-1815 GDI-3596: With respect to radiation impact, the unit shall b ...

Y A

XST-1422 GDI-105: All drawings, specifications and engineering data ...

Y R

XST-1423 GDI-106: Equipment/subsystem shall be compatible with mecha ...

Y R

XST-1427 GDI-2137: Material selection shall be in accordance with ECS ...

Y R

XST-1428 GDI-2139: Mechanical parts selection shall be in accordance ...

Y R

XST-1816 GDI-3980: All reference frames shall be right-handed orthogo ...

Y R

3.2.2 Structural Design 3.2.2.1 General Requirements XST-1431 GDI-117:

The following failure modes, for equipment/subsyst ... Y A


Page 49 of 64




XST-1432 GDI-118: For all structural items the following analyses ar ...

Y A

XST-1433 GDI-119: Dynamic Analysis: The dynamic analysis shall show ...

Y A

XST-1434 GDI-121: Stress Analysis: For each item a complete stress/s ...

Y A

XST-1435 GDI-122: No yielding is allowed at proof load/proof pressur ...

Y T

XST-1436 GDI-2053: The structure shall be of adequate strength to wit ...

Y A

XST-1437 GDI-2054: Local buckling shall be tolerated only if it is re ...

Y A

XST-1438 GDI-2055: For composite materials, microbuckling of fibers s ...

Y A

XST-1439 GDI-123: The equipment/subsystem shall be designed to withs ...

Y A

XST-1440 GDI-124: For sine and random vibrations, the mechanical siz ...

Y A

XST-1441 GDI-125: Wherever practical in the design of the primary st ...

Y A

XST-1442 GDI-126: Redundancy concepts (fail-safe) shall be considere ...

Y A

XST-1443 GDI-127: Fracture control principles shall be applied where ...

Y A

XST-1444 GDI-128: In cases where a fail-safe design cannot be implem ...

Y A

XST-1445 GDI-129: Pressure vessels shall be potential fracture criti ...

Y A

XST-1446 GDI-131: Pressure lines, fittings and components shall subj ...

Y T

XST-1447 GDI-133: All fusion joints shall be 100 %inspected accordin ...

Y I

XST-1448 GDI-134: Fasteners used in safe life applications, items fa ...

Y A

XST-1449 GDI-135: Fasteners a. Fasteners shall be classified and ana ...

Y A

XST-1450 GDI-136: PFCIs shall comply with ECSS-E-30-01A in full. ...

Y A

XST-1451 GDI-137: Non-metallic flight structural items (composite, g ...

Y T

XST-1452 GDI-138: For load cases involving thermal and/or moisture d ...

Y A

XST-1453 GDI-139: Where pressure and/or temperature and/or moisture ...

Y A

XST-1454 GDI-140: The Flight equipment shall be able to survive 4 ti ...

Y A

3.2.2.2 Mass Properies XST-1456 GDI-143:

All equipment/subsystem suppliers shall provide eq ... Y R

XST-1458 GDI-146: The mass of an item must be measured with the foll ...

Y T


Page 50 of 64




3.2.2.3 Centre of Gravity and Moment of Inertia XST-1460 GDI-148:

All COG and MOI estimates shall be accompanied by ... Y A

XST-1461 GDI-149: The Center of Gravity (CoG) shall be given. w.r.t. ...

Y R

XST-1462 GDI-150: The Moments of Inertia (MoI) shall be given about ...

Y R

3.2.2.4 Stiffness requirements XST-1464 GDI-2140:

Minimum natural frequency requirements are imposed ... Y A

XST-1465 GDI-154: Except otherwise specified, when equipment/subsyst ...

Y T,A

XST-1466 GDI-155: Modal analysis shall be performed to verify the fr ...

Y T,A

XST-1469 GDI-2188: The units and associated transport containers shal ...

Y A

XST-1470 GDI-2189: Vertical and horizontal loads shall be considered ...

Y A

XST-1476 GDI-2199: The transportation containers shall be designed to ...

Y A

XST-1477 GDI-2200: The MGSE design and analysis shall consider a desi ...

Y A

XST-1817 GDI-3629: During ground transportation the units shall withs ...

Y A

XST-1818 GDI-3664: All MGSE, containers, transportation and handling ...

Y A

XST-1819 GDI-3665: Sine and random vibrations: the unit transport con ...

Y A

XST-1820 GDI-3666: For containers, the shock requirement is a drop of ...

Y T,R

3.2.2.6 Strength requirements 3.2.2.6.1 Definitions and General Requirements 3.2.2.6.2 Margins of Safety and Factors of Safety XST-1499 GDI-186:

An uncertainty factor Jf shall be defined to provi ... Y A

XST-1500 GDI-187: A Qualification Factor of 1.5 shall be used for KQ ...

Y T

XST-1501 GDI-188: An Acceptance Factor of 1.0 shall be used for KA t ...

Y A

XST-1502 GDI-189: A Design Factor of 1.5 shall be used for DF to det ...

Y A

XST-1504 GDI-194: The unit shall be able to withstand, without failu ...

Y A

XST-1505 GDI-195: Margin of safety (MOS) a. Margins of safety (MOS) ...

Y A

XST-1506 GDI-197: Minimum Factors of Safety against ultimate for pre ...

Y A

XST-1507 GDI-198: For combined loads where L(P) is the load due to m ...

Y A

XST-1510 GDI-207: Conservative friction coefficients regarding minim ...

Y A

XST-1511 GDI-208: Wherever applicable, for general design of bolts, ...

Y R


Page 51 of 64




XST-1512 GDI-209: In addition, in case of combined loads due to ther ...

Y A

3.2.3 Design Requirements 3.2.3.1 Mounting Requirements XST-1516 GDI-219:

The attachment points of the equipment/subsystem s ... Y R

XST-1821 GDI-3996: The mechanical mounting interface shall be consist ...

Y R

XST-1517 GDI-220: The number of attachement bolts for a equipment sh ...

Y A

XST-1518 GDI-221: The interface plane flatness of a equipment/subsys ...

Y I

XST-1519 GDI-222: The equipment/subsystem bolts type and number shal ...

Y R

XST-1520 GDI-223: Except otherwise specified, all equipment/subsyste ...

Y R

XST-1521 GDI-228: Unless special conditions override, the thickness ...

Y R

XST-1522 GDI-229: Minimum clearance between mechanical parts shall c ...

Y R

XST-1523 GDI-230: All equipment/subsystems shall be designed allowin ...

Y A

XST-1524 GDI-2550: The minimum load carrying capability of the insert ...

Y A,R

XST-1525 GDI-2551: The following typical insert distances along the m ...

Y A,R

3.2.4 Mechanical / Optical Interface Control Documents XST-1527 GDI-239:

The mechanical and optical configuration and its i ... Y A

XST-1528 GDI-240: Interfaces will be subjected to a formal inspectio ...

Y T,I

XST-1529 GDI-241: The issues of ICDs have to be released as defined ...

Y A

XST-1530 GDI-242: One of the attachment holes on a equipment/subsyst ...

Y R

XST-1531 GDI-243: The equipment/subsystem reference frame shall have ...

Y R

XST-1532 GDI-246: The dimensioning of the attachment hole pattern sh ...

Y A

XST-1533 GDI-247: Interface Control Drawings shall be provided to AS ...

Y R

3.2.5 Mechanical Mathematical Model Requirements XST-1535 GDI-253:

Detailed Finite Element Models (FEM) shall be prov ... Y A

XST-1536 GDI-254: All FE model requirements, checks and formats are ...

Y T

XST-1822 GDI-2256: Mechanisms shall conform to the spacecraft system ...

Y A,R

3.4 Thermal Design and Interface Requirements 3.4.2 Definition of Temperatures and Terms 3.4.2.3 Isothermal Equipment/Subsystem XST-1541 GDI-302:

As far as possible thermal gradients across the ba ... Y R


Page 52 of 64




XST-1542 GDI-303: For radiative equipment/subsystems the temperature ...

Y T,A

XST-1543 GDI-304: For conductive equipment/subsystems the temperatur ...

Y T,A

XST-1544 GDI-305: For non-isothermal equipment/subsystems a referenc ...

Y R

3.4.2.4 Temperature Reference Point (TRP) XST-1546 GDI-307:

The temperature reference point (TRP) shall be sel ... Y R

3.4.3 Thermal Interface Requirements 3.4.3.1 Conductive Interface XST-1549 GDI-316:

The mounting interface shall comply with the mecha ... Y A

XST-1550 GDI-2536: An interface filler with a coefficient of friction ...

Y R

3.4.3.2 Radiative Interface XST-1552 GDI-322:

Equipment/subsystems shall be designed with an emi ... Y R

3.4.3.3 Internal Temperature Monitoring XST-1554 GDI-325:

The location, type and electrical interface of all ... Y R

3.4.5 Thermal Control XST-1556 GDI-331:

All thermal hardware mounted on the equipment/subs ... Y R

3.4.6 Thermal Interface Control Documents XST-1558 GDI-333:

All equipment/subsystem thermal interfaces shall b ... Y R

3.4.7 Thermal Mathematical Model Requirements 3.4.7.2 Thermal Interface Modeling XST-1561 GDI-336:

The Thermal mathematical model shall be provided f ... Y A

XST-1562 GDI-337: SI units: All units used in thermal models (geomet ...

Y A

3.4.7.3 Thermal Model Correlation XST-1564 GDI-339:

The detailed thermal model of a equipment/subsyste ... Y T,A

3.4.7.4 Reduced Thermal Model XST-1566 GDI-341:

The consistency between reduced and detailed therm ... Y A

XST-1567 GDI-342: The convergence of the thermal models shall be dem ...

Y A

5.1 Mechanical Interface Datasheet XST-1594 GDI-2760:

The mechanical and optical configuration and its i ... Y R

6.1 Thermal Interface Control Document XST-1596 GDI-2892:

All unit thermal interfaces shall be described wit ... Y R


Page 53 of 64



8 EMC SPECIFICATION APPLICABILITY MATRIX

The following table lists the applicable requirements of the EMC.

It contains, in the first column, the Local ID for each applicable EMC requirement number.

The second column contains the EMC Requirement number and the opening text of the requirement.




XST-1884 EMC-536: Bonding of metallic surfaces shall be made by meta ...

Y R

XST-1885 EMC-537: The assembled class S bond (i.e. metallic strap / ...

Y T

XST-1886 EMC-388: Joint faces shall be flat and clean before assembl ...

Y I,R

XST-1887 EMC-559: To prevent corrosion and alloying, bonding of elec ...

Y A

XST-1888 EMC-560: Where dissimilar materials are to be bonded, the r ...

Y A

XST-1889 EMC-669: A suitable anti-corrosion coating shall be applied ...

Y R

XST-1890 EMC-859: Conformance to electrical bonding requirements sha ...

Y R

XST-1891 EMC-406: Mechanical Parts without electrical nor shielding ...

Y T,R


Page 54 of 64



9 ENVIROMENTAL AND TEST SPECIFICATION APPLICABILITY MATRIX

The following table lists the applicable requirements of the E&T.

It contains, in the first column, the Local ID for each applicable E&T requirement number.

The second column contains the E&T Requirement number and the opening text of the requirement.



Table 6.6-1

Table 6.6-2


XST-1894 ET-14273: The MCS coordinate system is shown below. The +Y a ...

Y R

XST-1895 ET-36: Sine and random vibrations: The following mechanic ...

Y A,R

XST-1896 ET-15090: wdTCaption: Sinus and Random Environment durin ...

Y A,R

XST-1897 ET-15091: deleted ...

Y A,R

XST-1898 ET-15092: wdTCaption: Sinus and Random Environment during ...

Y A,R


Y A,R


Y A,R


Y A,R

XST-1902 ET-15098: The LV generated quasi-staic loads at satellite Co ...

Y A

XST-1903 ET-15100: The LV generated sine vibration loads at the LV-Ad ...

Y A

XST-1904 ET-15102: The LV generated random vibration loads at the LV- ...

Y A

XST-2109 ET-15392: The sine vibration environment applicable for the ...

Y

XST-1905 ET-210: : System level sine vibration inputs ...

Y T,A

XST-2110 ET-15393: The acoustic environment is given in Table ET-212. ...

Y

XST-1906 ET-212: : Acoustic test spectra ...

Y T,A

XST-2111 ET-15394: The shock enviroment (tbc) to be expected for the ...

Y


Page 55 of 64




XST-1907 ET-215: wdFCaption: Shock environment of separation eve ...

Y T

XST-1908 ET-15106: The following accelerations shall be considered du ...

Y A

XST-1909 ET-14642: For external items the heatexchange and absorbed f ...

Y A

XST-1910 ET-160: A generic unit/equipment/subsystem temperature lev ...

Y T,A,R

XST-1911 ET-14785: Propulsion Temperature limits (design temperatures ...

Y T,A

XST-1912 ET-249: All equipment shall be designed to withstand a rel ...

Y R

XST-1913 ET-252: For AIV and storage, all equipment shall withstand ...

Y R

XST-1914 ET-253: During transport prior to integration on the space ...

Y R

XST-1915 ET-254: The flight hardware transportation containers shal ...

Y R

XST-2102 ET-14632: After encapsulation under the fairing, the spacecr ...

Y

XST-2103 ET-14635: The typical mission timeline for BC is shown in ta ...

Y A

XST-2099 ET-251: Units mounted on the S/C shall be designed to with ...

Y A,R

XST-2104 ET-15263: The spacecraft subsystems/equipments shall withsta ...

Y A

XST-2105 ET-460: Each subsystem/unit/equipment shall assess the eff ...

Y R

XST-1916 ET-461: Solar and Planetary Electromagnetic Radiation ...

Y R

XST-1917 ET-462: Neutral Atmosphere ...

Y R

XST-1918 ET-463: Plasmas ...

Y R

XST-1919 ET-464: Energetic Particle Radiation ...

Y R

XST-1920 ET-465: Particulates ...

Y R

XST-1921 ET-466: Contamination ...

Y R

XST-1922 ET-467: Thermal (described in section 5) ...

Y R

XST-1923 ET-15264: For many of the associated analyses it is necessar ...

Y A

XST-2106 ET-14252: Average and worst case irradiance levels for the h ...

Y A

XST-2107 ET-15111: MCS elements shall be withstanding the plasma effe ...

Y R

XST-1924 ET-15112: The Table below gives the parameters which shall b ...

Y R

XST-1925 ET-15299: For trapped radiation source term evaluation withi ...

Y A


Page 56 of 64




XST-1926 ET-15302: To predict the fluences seen by BepiColombo an inv ...

Y A

XST-1927 ET-15323: The solar proton spectrum which shall be applied f ...

Y A

XST-1928 ET-15327: The galactic cosmic ray (GCR) LET spectrum which ...

Y A

XST-1929 ET-15330: The BC spacecraft MCS elements shall be able to sa ...

Y A

XST-1930 ET-15331: Peak fluxes (worst week, worst day, peak 5 minutes ...

Y A

XST-1931 ET-15334: The source term of electrons at 0.39 AU shown in F ...

Y A

XST-1932 ET-15339: The BC MCS elements shall withstand the effects of ...

Y A

XST-1933 ET-14302: Contamination and cleanliness requirements are add ...

Y R

XST-1934 ET-15038: ECSS-E-10-03A shall apply with the modifications d ...

Y

XST-1935 ET-105: Qualification of the design shall be accomplished ...

Y R

XST-1936 ET-14256: The objective of the qualification shall be to dem ...

Y T,A

XST-1937 ET-14258: The test specimen shall be subjected to qualificat ...

Y T

XST-1938 ET-14259: The test conditions shall not exceed design margin ...

Y T,R

XST-1939 ET-14260: Items which can be qualified by an applicable qual ...

Y T,R

XST-1940 ET-14261: Qualification testing shall be conducted at the re ...

Y R

XST-1941 ET-107: Environmental acceptance testing shall be performe ...

Y T

XST-1942 ET-14263: During environmental acceptance testing, condition ...

Y T

XST-1943 ET-109: The objective of the test item functional performa ...

Y T,A

XST-1944 ET-14265: An initial and a final functional performance test ...

Y T

XST-1945 ET-14266: Intermediate functional performance tests, which m ...

Y T

XST-1946 ET-14267: A functional performance test may run continuously ...

Y T

XST-1947 ET-14268: The test shall be conducted under standard laborat ...

Y R

XST-1948 ET-14269: The tests shall be performed in compliance with ap ...

Y T

XST-1949 ET-14270: Failure detection, isolation and recovery function ...

Y T

XST-1950 ET-14271: Functional test will be performed by operating all ...

Y T

XST-1951 ET-111: Any test facility to be used within the instrument ...

Y A,R

XST-1952 ET-113: The accuracy of instrument and test equipment used ...

Y A,R


Page 57 of 64




XST-1953 ET-115: The allowed test condition tolerances shall be app ...

Y A,I,R

XST-1954 ET-119: Unless otherwise specified herein, all measurement ...

Y A,I,R

XST-1955 ET-14276: The cleanliness requirements for the test items du ...

Y A,I,R

XST-1956 ET-121: Test execution shall be started only if all starti ...

Y A,I,R

XST-1957 ET-14277: Prior to and after every environmental test activi ...

Y I

XST-1958 ET-14279: Before commencing any formal qualification or acce ...

Y R

XST-1959 ET-14278: After completion of all formal qualifications or a ...

Y R

XST-1960 ET-123: The test is successfully performed if all measurem ...

Y T,A

XST-1961 ET-14280: Modifications, repair, replacement or refurbishmen ...

Y T,A

XST-1962 ET-127: The unit/equipment/subsystem under test shall be m ...

Y T

XST-1963 ET-128: At least one triaxial sensor shall be mounted on t ...

Y T

XST-1964 ET-129: At least two axis aligned sensors shall be mounted ...

Y T

XST-1965 ET-130: All unit/equipment/subsystems powered on during la ...

Y T

XST-1966 ET-15033: Any need for notching shall be notified to ASD as ...

Y T,A

XST-1967 ET-133: The test item shall be attached to the vibration e ...

Y T

XST-1968 ET-134: The variation of transmissibility between test ite ...

Y T

XST-1969 ET-135: Adequate fixture design and specimen installation ...

Y T

XST-1970 ET-136: A pre-test of the empty fixture shall be performed ...

Y T

XST-1971 ET-202: In case of large and heavy test items (e.g. module ...

Y

XST-1972 ET-203: Proof testing of test adapters is specified in the ...

Y T

XST-1973 ET-138: Frequency search tests shall be conducted in order ...

Y T

XST-1974 ET-140: Frequency search tests shall be conducted along ea ...

Y T

XST-1975 ET-14312: Units mounted on the spacecraft shall be designed ...

Y T,A

XST-2100 ET-14346: These units or instruments shall be designed to wi ...

Y T,A

XST-1976 ET-14391: Units mounted on the spacecraft shall be designed ...

Y T,A

XST-1977 ET-14434: After freeze of unit accommodation the loads as de ...

Y R

XST-2101 ET-14439: For major subsystems which are sensitive to acoust ...

Y T,A


Page 58 of 64




XST-1978 ET-14590: Units shall be designed and tested to withstand wi ...

Y T,A,R

XST-1979 ET-149: Sine and random vibration tests shall be performed ...

Y T

XST-1980 ET-150: Prior and after sine and random vibration qualific ...

Y T

XST-1981 ET-151: Before applying full levels, a test at intermediat ...

Y T

XST-1982 ET-152: Any notching must be formally requested as a waive ...

Y T

XST-1983 ET-153: The vibration facility shall include a shock free ...

Y T

XST-1984 ET-155: Unit/equipment/subsystems shall demonstrate by tes ...

Y T

XST-1985 ET-156: Prior and after shock tests a low level sine frequ ...

Y T

XST-1986 ET-14624: Shock testing shall be performed with a device pr ...

Y T

XST-1987 ET-14625: The qualification to shock has to be demonstrated ...

Y T

XST-1988 ET-158: Static tests shall be performed by applying static ...

Y T

XST-1989 ET-15044: For sealed or pressurized equipments, pressure and ...

Y

XST-1990 ET-231: The following temperature margins shall be taken f ...

Y T

XST-1991 ET-162: The temperatures shall be selected and controlled ...

Y R

XST-1992 ET-163: The test arrangement shall be as shown in Figure E ...

Y R

XST-1993 ET-164: The unit/equipment/subsystem shall be bolted to a ...

Y R

XST-1994 ET-165: On all external surfaces flight representative the ...

Y R

XST-1995 ET-166: The heat sink (HS) plates shall be black painted ( ...

Y R

XST-1996 ET-167: The conductive heat sink temperature and the chamb ...

Y R

XST-1997 ET-168: For vacuum tests the pressure inside the chamber s ...

Y R

XST-1998 ET-172: unit/equipment/subsystem’s suppliers shall perform ...

Y T

XST-1999 ET-174: The TV test on unit/equipment/subsystem level shal ...

Y R

XST-2000 ET-176: The unit/equipment/subsystems shall be tested foll ...

Y T,R

XST-2001 ET-182: unit/equipment/subsystem suppliers shall perform t ...

Y T

XST-2002 ET-183: The thermal vacuum acceptance test shall be perfor ...

Y T,R

XST-2003 ET-187: unit/equipment/subsystem suppliers shall perform t ...

Y T

XST-2004 ET-188: The thermal vacuum protoflight test shall be perfo ...

Y T,R


Page 59 of 64




XST-2005 ET-191: With regard to radiation testing the manufacturer ...

Y R

XST-2006 ET-193: With regard to unit/equipment/subsystem EMC testin ...

Y R

XST-2007 ET-15042: With regard to unit/equipment/subsystem ESD testin ...

Y R

XST-2008 ET-195: A life test shall be required for all the assembli ...

Y T,R

XST-2009 ET-197: Space conditioning shall be performed whenever des ...

Y T,R

XST-2010 ET-198: The contractors shall propose the corresponding te ...

Y R

XST-2011 ET-199: For example, but without limitation to, materials ...

Y T

11.1 SCOPE 11.2 Mechanical Test Objectives 11.3 Notching Pilosophy 11.4 Essential Rules 11.5 Notching Sine Test Spectrum 11.6 Notching Random Test Spectrum 11.6.1 General Notching Criteria 11.6.2 Detailed Notching Criteria 11.6.2.1 Notching of a single resonance 11.6.2.2 Notching of a multi DOF equipment 11.6.2.3 Combined interface loads 11.6.3 Notching during tests 11.6.3.1 Identification of eigen modes 11.6.3.2 Determination of the interface loads 11.6.3.3 Determination of the notched spectrum 11.6.3.4 Random Tests at intermediate levels 11.6.3.5 Measurement plan 11.7 Random notching example


Page 60 of 64



Requirement/Section Cross Reference Page numbers are the pages where the sections start

XST-4 ................. 2.......................7 XST-13 ............... 3.1....................9 XST-14 ............... 3.1....................9 XST-16 ............... 3.2....................9 XST-17 ............... 3.2....................9 XST-20 ............... 3.2.1.1..............10 XST-21 ............... 3.2.1.1..............10 XST-23 ............... 3.2.1.2..............10 XST-25 ............... 3.2.1.3..............10 XST-27 ............... 3.2.1.4..............11 XST-29 ............... 3.2.1.5..............11 XST-31 ............... 3.2.1.6..............11 XST-33 ............... 3.2.1.7..............11 XST-35 ............... 3.2.2.................11 XST-38 ............... 3.2.3.1..............11 XST-40 ............... 3.2.3.2..............12 XST-42 ............... 3.2.3.3..............13 XST-44 ............... 3.2.3.4..............13 XST-48 ............... 4.1.1.1..............15 XST-50 ............... 4.1.1.2..............15 XST-51 ............... 4.1.1.2..............15 XST-52 ............... 4.1.1.2..............15 XST-54 ............... 4.1.1.2..............15 XST-55 ............... 4.1.1.2..............15 XST-57 ............... 4.1.2.................16 XST-58 ............... 4.1.2.................16 XST-59 ............... 4.1.2.................16 XST-61 ............... 4.1.3.................17 XST-62 ............... 4.1.3.................17 XST-65 ............... 4.1.4.................17 XST-67 ............... 4.1.5.................17 XST-69 ............... 4.2....................17 XST-71 ............... 4.2....................17 XST-126 ............. 4.3.1.................17 XST-128 ............. 4.3.2.................18 XST-129 ............. 4.3.2.................18 XST-131 ............. 4.3.3.................18 XST-134 ............. 4.3.4.1..............18 XST-135 ............. 4.3.4.1..............18 XST-136 ............. 4.3.4.1..............18 XST-137 ............. 4.3.4.1..............18 XST-138 ............. 4.3.4.1..............18 XST-140 ............. 4.3.4.2..............18 XST-141 ............. 4.3.4.2..............18 XST-142 ............. 4.3.4.2..............18 XST-144 ............. 4.3.4.3..............18 XST-145 ............. 4.3.4.3..............18 XST-146 ............. 4.3.4.3..............18 XST-147 ............. 4.3.4.3..............18 XST-149 ............. 4.3.4.4..............19 XST-151 ............. 4.4....................19 XST-153 ............. 4.5....................19 XST-166 ............. 4.6.1.................19 XST-168 ............. 4.6.1.1..............19 XST-170 ............. 4.6.1.2..............19 XST-171 ............. 4.6.1.2..............19 XST-173 ............. 4.6.1.3..............20

XST-175..............4.6.1.4 ............. 20 XST-177..............4.6.1.5 ............. 20 XST-181..............4.6.1.6 ............. 20 XST-183..............4.6.1.7 ............. 20 XST-184..............4.6.1.7 ............. 20 XST-187..............4.6.1.8.1 .......... 20 XST-188..............4.6.1.8.1 .......... 20 XST-189..............4.6.1.8.1 .......... 20 XST-191..............4.6.1.8.2 .......... 21 XST-192..............4.6.1.8.2 .......... 21 XST-193..............4.6.1.8.2 .......... 21 XST-194..............4.6.1.8.2 .......... 21 XST-195..............4.6.1.8.2 .......... 21 XST-196..............4.6.1.8.2 .......... 21 XST-198..............4.6.1.9 ............. 21 XST-200..............4.6.1.9 ............. 21 XST-201..............4.6.1.9 ............. 21 XST-202..............4.6.1.9 ............. 21 XST-204..............4.6.1.10 ........... 22 XST-212..............4.6.1.11 ........... 22 XST-214..............4.6.1.12 ........... 22 XST-215..............4.6.1.12 ........... 22 XST-217..............4.6.1.13 ........... 22 XST-226..............4.7.1 ................ 23 XST-227..............4.7.1 ................ 23 XST-228..............4.7.1 ................ 23 XST-230..............4.7.2 ................ 23 XST-231..............4.7.2 ................ 23 XST-235..............4.7.3 ................ 23 XST-236..............4.7.3 ................ 23 XST-238..............4.8 ................... 23 XST-239..............4.8 ................... 23 XST-244..............6.1.1 ................ 25 XST-246..............6.1.2 ................ 25 XST-248..............6.1.3 ................ 25 XST-249..............6.1.3 ................ 25 XST-250..............6.1.3 ................ 25 XST-252..............6.1.4 ................ 25 XST-254..............6.1.5 ................ 25 XST-256..............6.2 ................... 25 XST-257..............6.2 ................... 25 XST-258..............6.2 ................... 25 XST-259..............6.2 ................... 25 XST-262..............6.2.1.1 ............. 26 XST-264..............6.2.1.2 ............. 26 XST-265..............6.2.1.2 ............. 26 XST-266..............6.2.1.2 ............. 26 XST-267..............6.2.1.2 ............. 26 XST-270..............6.2.2.1 ............. 27 XST-271..............6.2.2.1 ............. 27 XST-273..............6.2.2.2 ............. 27 XST-275..............6.2.2.3 ............. 27 XST-277..............6.2.2.4 ............. 27 XST-279..............6.2.2.5 ............. 27 XST-281..............6.2.2.6 ............. 28 XST-284..............6.2.3.1 ............. 28 XST-285..............6.2.3.1 ............. 28

XST-286.............. 6.2.3.1 ..............28 XST-287.............. 6.2.3.1 ..............28 XST-288.............. 6.2.3.1 ..............28 XST-289.............. 6.2.3.1 ..............28 XST-291.............. 6.2.3.2 ..............28 XST-292.............. 6.2.3.2 ..............28 XST-293.............. 6.2.3.2 ..............28 XST-295.............. 6.2.3.3 ..............30 XST-297.............. 6.2.3.4 ..............30 XST-299.............. 6.2.3.5 ..............30 XST-302.............. 6.3.1 .................31 XST-303.............. 6.3.1 .................31 XST-304.............. 6.3.1 .................31 XST-305.............. 6.3.1 .................31 XST-307.............. 6.3.2 .................31 XST-308.............. 6.3.2 .................31 XST-309.............. 6.3.2 .................31 XST-311.............. 6.3.3 .................31 XST-313.............. 6.3.4 .................32 XST-317.............. 6.3.5 .................33 XST-319.............. 6.4 ....................33 XST-321.............. 6.4.1 .................33 XST-323.............. 6.4.1.1 ..............33 XST-324.............. 6.4.1.1 ..............33 XST-325.............. 6.4.1.1 ..............33 XST-327.............. 6.4.1.2 ..............33 XST-329.............. 6.4.1.3 ..............33 XST-331.............. 6.4.1.4 ..............34 XST-333.............. 6.4.2 .................34 XST-334.............. 6.4.2 .................34 XST-335.............. 6.4.2 .................34 XST-336.............. 6.4.2 .................34 XST-341.............. 6.4.3.1 ..............34 XST-345.............. 6.4.3.1 ..............34 XST-348.............. 6.4.3.1 ..............34 XST-349.............. 6.4.3.1 ..............34 XST-351.............. 6.4.3.1 ..............34 XST-352.............. 6.4.3.1 ..............34 XST-353.............. 6.4.3.1 ..............34 XST-354.............. 6.4.3.1 ..............34 XST-366.............. 6.4.4 .................36 XST-367.............. 6.4.4 .................36 XST-369.............. 6.4.5 .................36 XST-370.............. 6.4.5 .................36 XST-371.............. 6.4.5 .................36 XST-372.............. 6.4.5 .................36 XST-373.............. 6.4.5 .................36 XST-374.............. 6.4.5 .................36 XST-377.............. 6.4.6.1 ..............36 XST-378.............. 6.4.6.1 ..............36 XST-379.............. 6.4.6.1 ..............36 XST-380.............. 6.4.6.1 ..............36 XST-381.............. 6.4.6.1 ..............36 XST-382.............. 6.4.6.1 ..............36 XST-383.............. 6.4.6.1 ..............36 XST-384.............. 6.4.6.1 ..............36 XST-385.............. 6.4.6.1 ..............36


Page 61 of 64



XST-387 ............. 6.4.6.2..............37 XST-388 ............. 6.4.6.2..............37 XST-389 ............. 6.4.6.2..............37 XST-390 ............. 6.4.6.2..............37 XST-391 ............. 6.4.6.2..............37 XST-393 ............. 6.4.7.................37 XST-394 ............. 6.4.7.................37 XST-395 ............. 6.4.7.................37 XST-396 ............. 6.4.7.................37 XST-397 ............. 6.4.7.................37 XST-398 ............. 6.4.7.................37 XST-399 ............. 6.4.7.................37 XST-400 ............. 6.4.7.................37 XST-402 ............. 6.4.8.................38 XST-403 ............. 6.4.8.................38 XST-404 ............. 6.4.8.................38 XST-405 ............. 6.4.8.................38 XST-406 ............. 6.4.8.................38 XST-407 ............. 6.4.8.................38 XST-413 ............. 6.4.9.................38 XST-414 ............. 6.4.9.................38 XST-415 ............. 6.4.9.................38 XST-417 ............. 6.4.10...............40 XST-418 ............. 6.4.10...............40 XST-419 ............. 6.4.10...............40 XST-420 ............. 6.4.10...............40 XST-422 ............. 6.4.11...............40 XST-423 ............. 6.4.11...............40 XST-424 ............. 6.4.11...............40 XST-425 ............. 6.4.11...............40 XST-426 ............. 6.4.11...............40 XST-427 ............. 6.4.11...............40 XST-428 ............. 6.4.11...............40 XST-430 ............. 6.4.12...............41 XST-432 ............. 6.4.13...............41 XST-434 ............. 6.4.13.1............41 XST-436 ............. 6.4.13.2............41 XST-437 ............. 6.4.13.2............41 XST-439 ............. 6.4.14...............42 XST-441 ............. 6.4.15...............42 XST-443 ............. 6.4.16...............42 XST-445 ............. 6.4.17...............42 XST-446 ............. 6.4.17...............42 XST-448 ............. 6.4.17...............42 XST-450 ............. 6.5....................42 XST-452 ............. 6.6....................43 XST-455 ............. 6.5.1.................42 XST-456 ............. 6.5.1.................42 XST-458 ............. 6.5.1.1..............42 XST-459 ............. 6.5.1.1..............42 XST-461 ............. 6.5.1.2..............43 XST-463 ............. 6.5.1.3..............43 XST-464 ............. 6.5.1.3..............43 XST-465 ............. 6.5.1.3..............43 XST-467 ............. 6.5.2.................43 XST-468 ............. 6.5.2.................43 XST-475 ............. 6.5.3.................43 XST-476 ............. 6.5.3.................43 XST-479 ............. 6.4.9.................38 XST-480 ............. 3.2.3.4..............13

XST-482..............6 ...................... 25 XST-483..............6 ...................... 25 XST-484..............6 ...................... 25 XST-485..............6 ...................... 25 XST-486..............6 ...................... 25 XST-487..............6 ...................... 25 XST-494..............6 ...................... 25 XST-495..............6 ...................... 25 XST-496..............6 ...................... 25 XST-497..............6 ...................... 25 XST-498..............6 ...................... 25 XST-508..............2.1 ................... 7 XST-509..............2.1 ................... 7 XST-510..............2.1 ................... 7 XST-512..............2.1 ................... 7 XST-513..............2.1 ................... 7 XST-514..............2.1 ................... 7 XST-516..............2.1 ................... 7 XST-517..............2.1 ................... 7 XST-518..............2.1 ................... 7 XST-520..............2.1 ................... 7 XST-521..............2.1 ................... 7 XST-522..............2.1 ................... 7 XST-524..............2.1 ................... 7 XST-525..............2.1 ................... 7 XST-526..............2.1 ................... 7 XST-528..............2.1 ................... 7 XST-529..............2.1 ................... 7 XST-530..............2.1 ................... 7 XST-532..............2.1 ................... 7 XST-533..............2.1 ................... 7 XST-534..............2.1 ................... 7 XST-536..............2.1 ................... 7 XST-537..............2.1 ................... 7 XST-538..............2.1 ................... 7 XST-541..............2.2 ................... 7 XST-542..............2.2 ................... 7 XST-543..............2.2 ................... 7 XST-545..............2.2 ................... 7 XST-546..............2.2 ................... 7 XST-547..............2.2 ................... 7 XST-549..............2.2 ................... 7 XST-550..............2.2 ................... 7 XST-551..............2.2 ................... 7 XST-553..............2.2 ................... 7 XST-554..............2.2 ................... 7 XST-555..............2.2 ................... 7 XST-557..............2.2 ................... 7 XST-558..............2.2 ................... 7 XST-559..............2.2 ................... 7 XST-561..............2.2 ................... 7 XST-562..............2.2 ................... 7 XST-563..............2.2 ................... 7 XST-565..............2.2 ................... 7 XST-566..............2.2 ................... 7 XST-567..............2.2 ................... 7 XST-569..............2.2 ................... 7 XST-570..............2.2 ................... 7 XST-571..............2.2 ................... 7 XST-573..............2.2 ................... 7

XST-574.............. 2.2 ....................7 XST-575.............. 2.2 ....................7 XST-578.............. 2.3 ....................8 XST-579.............. 2.3 ....................8 XST-580.............. 2.3 ....................8 XST-582.............. 2.3 ....................8 XST-583.............. 2.3 ....................8 XST-584.............. 2.3 ....................8 XST-586.............. 2.3 ....................8 XST-587.............. 2.3 ....................8 XST-588.............. 2.3 ....................8 XST-590.............. 2.3 ....................8 XST-591.............. 2.3 ....................8 XST-592.............. 2.3 ....................8 XST-594.............. 2.3 ....................8 XST-595.............. 2.3 ....................8 XST-596.............. 2.3 ....................8 XST-598.............. 2.3 ....................8 XST-599.............. 2.3 ....................8 XST-600.............. 2.3 ....................8 XST-602.............. 2.3 ....................8 XST-603.............. 2.3 ....................8 XST-604.............. 2.3 ....................8 XST-606.............. 2.3 ....................8 XST-607.............. 2.3 ....................8 XST-608.............. 2.3 ....................8 XST-610.............. 2.3 ....................8 XST-611.............. 2.3 ....................8 XST-612.............. 2.3 ....................8 XST-617.............. 3.2.3.1 ..............11 XST-618.............. 3.2.3.1 ..............11 XST-619.............. 3.2.3.1 ..............11 XST-620.............. 4.1.1.1 ..............15 XST-621.............. 3.2.1.3 ..............10 XST-639.............. 4.6.1.8.2 ...........21 XST-640.............. 4.6.1.8.2 ...........21 XST-643.............. 6.2.2.2 ..............27 XST-644.............. 6.2.2.2 ..............27 XST-645.............. 6.2.2.2 ..............27 XST-647.............. 6.2.2.2 ..............27 XST-648.............. 6.2.2.2 ..............27 XST-649.............. 6.2.2.2 ..............27 XST-651.............. 6.2.2.2 ..............27 XST-652.............. 6.2.2.2 ..............27 XST-653.............. 6.2.2.2 ..............27 XST-655.............. 6.2.2.2 ..............27 XST-656.............. 6.2.2.2 ..............27 XST-657.............. 6.2.2.2 ..............27 XST-659.............. 6.2.2.2 ..............27 XST-660.............. 6.2.2.2 ..............27 XST-661.............. 6.2.2.2 ..............27 XST-663.............. 6.2.2.2 ..............27 XST-664.............. 6.2.2.2 ..............27 XST-665.............. 6.2.2.2 ..............27 XST-667.............. 6.2.2.2 ..............27 XST-668.............. 6.2.2.2 ..............27 XST-669.............. 6.2.2.2 ..............27 XST-671.............. 6.2.2.2 ..............27 XST-672.............. 6.2.2.2 ..............27 XST-673.............. 6.2.2.2 ..............27


Page 62 of 64



XST-675 ............. 6.2.2.2..............27 XST-676 ............. 6.2.2.2..............27 XST-677 ............. 6.2.2.2..............27 XST-679 ............. 6.2.2.2..............27 XST-680 ............. 6.2.2.2..............27 XST-681 ............. 6.2.2.2..............27 XST-687 ............. 6.2.2.2..............27 XST-688 ............. 6.2.2.2..............27 XST-689 ............. 6.2.2.2..............27 XST-693 ............. 6.2.3.2..............28 XST-694 ............. 6.2.3.2..............28 XST-695 ............. 6.2.3.2..............28 XST-697 ............. 6.2.3.2..............28 XST-698 ............. 6.2.3.2..............28 XST-699 ............. 6.2.3.2..............28 XST-701 ............. 6.2.3.2..............28 XST-702 ............. 6.2.3.2..............28 XST-703 ............. 6.2.3.2..............28 XST-705 ............. 6.2.3.2..............28 XST-706 ............. 6.2.3.2..............28 XST-707 ............. 6.2.3.2..............28 XST-709 ............. 6.2.3.2..............28 XST-710 ............. 6.2.3.2..............28 XST-711 ............. 6.2.3.2..............28 XST-713 ............. 6.2.3.2..............28 XST-714 ............. 6.2.3.2..............28 XST-715 ............. 6.2.3.2..............28 XST-717 ............. 6.2.3.2..............28 XST-718 ............. 6.2.3.2..............28 XST-719 ............. 6.2.3.2..............28 XST-721 ............. 6.2.3.2..............28 XST-722 ............. 6.2.3.2..............28 XST-723 ............. 6.2.3.2..............28 XST-725 ............. 6.2.3.2..............28 XST-726 ............. 6.2.3.2..............28 XST-727 ............. 6.2.3.2..............28 XST-729 ............. 6.2.3.2..............28 XST-730 ............. 6.2.3.2..............28 XST-731 ............. 6.2.3.2..............28 XST-733 ............. 6.2.3.2..............28 XST-734 ............. 6.2.3.2..............28 XST-735 ............. 6.2.3.2..............28 XST-737 ............. 6.2.3.2..............28 XST-738 ............. 6.2.3.2..............28 XST-739 ............. 6.2.3.2..............28 XST-741 ............. 6.2.3.2..............28 XST-742 ............. 6.2.3.2..............28 XST-743 ............. 6.2.3.2..............28 XST-745 ............. 6.2.3.2..............28 XST-746 ............. 6.2.3.2..............28 XST-747 ............. 6.2.3.2..............28 XST-749 ............. 6.2.3.2..............28 XST-750 ............. 6.2.3.2..............28 XST-751 ............. 6.2.3.2..............28 XST-753 ............. 6.2.3.2..............28 XST-754 ............. 6.2.3.2..............28 XST-755 ............. 6.2.3.2..............28 XST-770 ............. 6.2.3.2..............28 XST-771 ............. 6.2.3.2..............28 XST-772 ............. 6.2.3.2..............28

XST-774..............6.2.3.2 ............. 28 XST-775..............6.2.3.2 ............. 28 XST-776..............6.2.3.2 ............. 28 XST-778..............6.2.3.2 ............. 28 XST-779..............6.2.3.2 ............. 28 XST-780..............6.2.3.2 ............. 28 XST-782..............6.2.3.2 ............. 28 XST-783..............6.2.3.2 ............. 28 XST-784..............6.2.3.2 ............. 28 XST-785..............3.2.1.7 ............. 11 XST-786..............3.2.1.7 ............. 11 XST-787..............3.2.1.7 ............. 11 XST-791..............6.4.11 .............. 40 XST-792..............6.4.11 .............. 40 XST-793..............6.4.11 .............. 40 XST-794..............6.4.11 .............. 40 XST-796..............6.4.11 .............. 40 XST-797..............6.4.11 .............. 40 XST-798..............6.4.11 .............. 40 XST-799..............6.4.11 .............. 40 XST-801..............6.4.11 .............. 40 XST-802..............6.4.11 .............. 40 XST-803..............6.4.11 .............. 40 XST-804..............6.4.11 .............. 40 XST-806..............6.4.11 .............. 40 XST-807..............6.4.11 .............. 40 XST-808..............6.4.11 .............. 40 XST-809..............6.4.11 .............. 40 XST-811..............6.4.11 .............. 40 XST-812..............6.4.11 .............. 40 XST-813..............6.4.11 .............. 40 XST-814..............6.4.11 .............. 40 XST-816..............6.4.11 .............. 40 XST-817..............6.4.11 .............. 40 XST-818..............6.4.11 .............. 40 XST-819..............6.4.11 .............. 40 XST-820..............6.4.12 .............. 41 XST-826..............3.2.1.1 ............. 10 XST-837..............6.4.11 .............. 40 XST-839..............6.4.11 .............. 40 XST-840..............6.4.11 .............. 40 XST-841..............6.4.11 .............. 40 XST-842..............6.4.11 .............. 40 XST-843..............6.4.11 .............. 40 XST-844..............6 ...................... 25 XST-848..............3.2.1.1 ............. 10 XST-849..............3.2.1.1 ............. 10 XST-850..............3.2.1.1 ............. 10 XST-852..............3.2.1.1 ............. 10 XST-853..............3.2.1.1 ............. 10 XST-854..............3.2.1.1 ............. 10 XST-856..............3.2.1.1 ............. 10 XST-857..............3.2.1.1 ............. 10 XST-858..............3.2.1.1 ............. 10 XST-860..............3.2.1.1 ............. 10 XST-861..............3.2.1.1 ............. 10 XST-862..............3.2.1.1 ............. 10 XST-864..............3.2.1.1 ............. 10 XST-865..............3.2.1.1 ............. 10 XST-866..............3.2.1.1 ............. 10

XST-868.............. 3.2.1.1 ..............10 XST-869.............. 3.2.1.1 ..............10 XST-870.............. 3.2.1.1 ..............10 XST-1617............ 2.1 ....................7 XST-1618............ 2.1 ....................7 XST-1619............ 2.1 ....................7 XST-1621............ 2.1 ....................7 XST-1622............ 2.1 ....................7 XST-1623............ 2.1 ....................7 XST-1625............ 2.3 ....................8 XST-1626............ 2.3 ....................8 XST-1627............ 2.3 ....................8 XST-1629............ 2.3 ....................8 XST-1630............ 2.3 ....................8 XST-1631............ 2.3 ....................8 XST-1632............ 5.1 ....................24 XST-1638............ 10.1 .................. XST-1639............ 10.1 .................. XST-1640............ 10.1 .................. XST-1641............ 10.1 .................. XST-1643............ 10.1 .................. XST-1644............ 10.1 .................. XST-1645............ 10.1 .................. XST-1646............ 10.1 .................. XST-1648............ 10.1 .................. XST-1649............ 10.1 .................. XST-1650............ 10.1 .................. XST-1651............ 10.1 .................. XST-1655............ 10.2 .................. XST-1656............ 10.2 .................. XST-1658............ 10.2 .................. XST-1659............ 10.2 .................. XST-1661............ 10.2 .................. XST-1662............ 10.2 .................. XST-1664............ 10.2 .................. XST-1665............ 10.2 .................. XST-1667............ 10.2 .................. XST-1668............ 10.2 .................. XST-1670............ 10.2 .................. XST-1671............ 10.2 .................. XST-1673............ 10.2 .................. XST-1674............ 10.2 .................. XST-1676............ 10.2 .................. XST-1677............ 10.2 .................. XST-1679............ 10.2 .................. XST-1680............ 10.2 .................. XST-1682............ 10.2 .................. XST-1683............ 10.2 .................. XST-1685............ 3.2.1.1 ..............10 XST-1687............ 6.4.8 .................38 XST-1688............ 6.4.7 .................37 XST-1692............ 3.2.3.2 ..............12 XST-1693............ 3.2.3.2 ..............12 XST-1697............ 6.2.4.1 ..............30 XST-1698............ 6.2.4.1 ..............30 XST-1699............ 6.2.4.1 ..............30 XST-1702............ 6.2.4.1 ..............30 XST-1703............ 6.2.4.1 ..............30 XST-1704............ 6.2.4.1 ..............30 XST-1706............ 6.2.4.1 ..............30


Page 63 of 64



XST-1707 ........... 6.2.4.1..............30 XST-1708 ........... 6.2.4.1..............30 XST-1710 ........... 6.2.4.1..............30 XST-1711 ........... 6.2.4.1..............30 XST-1712 ........... 6.2.4.1..............30 XST-1714 ........... 6.2.4.1..............30 XST-1715 ........... 6.2.4.1..............30 XST-1716 ........... 6.2.4.1..............30 XST-1718 ........... 6.2.4.1..............30 XST-1719 ........... 6.2.4.1..............30 XST-1720 ........... 6.2.4.1..............30 XST-1722 ........... 6.2.4.1..............30 XST-1723 ........... 6.2.4.1..............30 XST-1724 ........... 6.2.4.1..............30 XST-1726 ........... 6.2.4.1..............30 XST-1727 ........... 6.2.4.1..............30 XST-1728 ........... 6.2.4.1..............30 XST-1730 ........... 6.2.4.1..............30 XST-1731 ........... 6.2.4.1..............30 XST-1732 ........... 6.2.4.1..............30 XST-1734 ........... 6.2.4.1..............30 XST-1735 ........... 6.2.4.1..............30 XST-1736 ........... 6.2.4.1..............30 XST-1768 ........... 10.2.................. XST-1769 ........... 10.2.................. XST-1770 ........... 10.2.................. XST-1771 ........... 10.2.................. XST-1772 ........... 10.2.................. XST-1773 ........... 10.2.................. XST-1774 ........... 10.2.................. XST-1775 ........... 10.2.................. XST-1776 ........... 10.2.................. XST-1777 ........... 10.2.................. XST-1778 ........... 10.2.................. XST-1779 ........... 10.2.................. XST-1780 ........... 10.2.................. XST-1781 ........... 10.2.................. XST-1782 ........... 10.2.................. XST-1783 ........... 10.2.................. XST-1784 ........... 10.2.................. XST-1785 ........... 10.2.................. XST-1786 ........... 10.2.................. XST-1787 ........... 10.2.................. XST-1789 ........... 10.2.................. XST-1790 ........... 10.2.................. XST-1791 ........... 10.2.................. XST-1792 ........... 10.2.................. XST-1794 ........... 10.2.................. XST-1795 ........... 10.2.................. XST-1796 ........... 10.2.................. XST-1797 ........... 10.2.................. XST-1799 ........... 10.2.................. XST-1800 ........... 10.2.................. XST-1801 ........... 10.2.................. XST-1802 ........... 10.2.................. XST-1804 ........... 10.2.................. XST-1805 ........... 10.2.................. XST-1806 ........... 10.2.................. XST-1807 ........... 10.2.................. XST-1824 ........... 2.3....................8

XST-1825............2.3 ................... 8 XST-1826............2.3 ................... 8 XST-1833............6 ...................... 25 XST-1834............3.1 ................... 9 XST-1836............6.2.2.2 ............. 27 XST-1837............6.2.2.2 ............. 27 XST-1838............6.2.2.2 ............. 27 XST-1845............6.2.4.1 ............. 30 XST-1846............6.2.4.1 ............. 30 XST-1847............6.2.4.1 ............. 30 XST-1850............6.2.4.1 ............. 30 XST-1851............6.2.4.1 ............. 30 XST-1852............6.2.4.1 ............. 30 XST-1854............6.2.4.1 ............. 30 XST-1855............6.2.4.1 ............. 30 XST-1856............6.2.4.1 ............. 30 XST-1862............6.2.3.2 ............. 28 XST-1863............6.2.3.2 ............. 28 XST-1864............6.2.3.2 ............. 28 XST-1866............6.2.3.2 ............. 28 XST-1867............6.2.3.2 ............. 28 XST-1868............6.2.3.2 ............. 28 XST-1870............6.2.3.2 ............. 28 XST-1871............6.2.3.2 ............. 28 XST-1872............6.2.3.2 ............. 28 XST-1878............6.2.3.2 ............. 28 XST-1879............6.2.3.2 ............. 28 XST-1880............6.2.3.2 ............. 28 XST-2097............6.2.1.1 ............. 26 XST-2112............3.2.1.3 ............. 10 XST-2113............4.2 ................... 17


Page 64 of 64



DOCUMENT CHANGE DETAILS

Issue Change Authority Class Relevant Information / instructions 01 II First Issue

DISTRIBUTION LIST

INTERNAL EXTERNAL