TECHNICAL SPECIFICATION FOR REPLACEMENT OF AVR FOR

NUCLEAR POWER CORPORATION OF INDIA LTD.

TECHNICAL SPECIFICATION FOR

REPLACEMENT OF AVR FOR EMERGENCY DIESEL GENERATOR

Technical Specification

TECHNICAL SPECIFICATION

FOR


1.0 SCOPE OF SUPPLY / WORKS / SERVICES.

1.1 This specification covers replacement of existing analogue automatic voltage regulators

(AVR) panels of excitation system with new voltage regulators for Emergency Diesel

Generators. It includes inspection, testing, and packing, transportation, delivery at site,

erection, commissioning, and performance of functional test.

1.2 It is not the intent to specify completely herein, all details of design and construction of

the equipment. However, the equipment shall conform in all respects to high standards

of engineering, design and workmanship and be capable of performing continuous

commercial operation up to the CONTRACTOR'S guarantees in a manner acceptable

to the PURCHASER, who will interpret the meaning of drawings and specifications

and shall be entitled to reject any work or material which, in his judgement, is not in

full accordance therewith.

1.3 The scope includes but not limited to the following items / services described herein

and elsewhere in the tender package. CONTRACTOR will offer digital (with computer

based system) AVR suitable to existing system. Technical requirements of from new

AVR and additional requirements of digital AVR is supplied are brought out in this

specification.

1.3.1 New AVR should be compatible with existing excitation system with respect to

following:

i. Functional Requirements of AVR

ii. AVR Wiring Diagram

iii. Details of external cabling to other panels

iv. Auxiliary power supply arrangement

v. GA Drawing of AVR Panel for space availability for new panel

vi. Remote Control / Protection Alarm/Indication in MCR / SCADA

vii. Specification and ratings of CTs and PTs

These details are given in Annexure –I

New AVR, equipped with computer based systems (CBS), shall be complete with all

necessary digital control cards, interface card, communication card etc. and associated

switching, protection, control, alarm and indication circuits.

1.3.2 AVR comes under seismic category 1 and complete panel shall be seismically qualified

preferably by testing. If not possible, than by analysis or testing and analysis. In case





any anchor bolts are required to be used during installation, the same shall be

seismically qualified anchor fasteners of NPCIL approved make.

1.3.3 AVR panels along with associated equipments, if provided with commercially pre

developed system (C-PDS) is required to undergo internal Independent Verification and

Validation program (IV&V) for both hardware and software portions. Details are given

in Annexure-V. Functional testing of AVR shall be carried out at factory and actual

testing at site as per IV & V requirements.

1.3.4 Since the AVR is for emergency diesel generator its electrical safety class will be class-

EA (For Computer Based Systems used, safety class- IB) as per AERB SG-D-1. This

aspect is to be considered for IV&V purpose.

1.3.5 Engineering deliverables by supplier shall include following:

i. All engineering drawings and documents for AVR

ii. Terminal List (TL)

iii. Factory and Site testing Procedure and Reports

iv. IV &V Related documents

v. Commissioning/test procedures

vi. AVR setting sheets

vii. All history documents as mentioned in clause no.12.3

1.3.6 CONTRACTOR shall visit the site to understand the nature of job, existing panel

configuration and modifications required for the replacement of old AVR panel.

Expected visit for execution of the all task activities is two.

1.3.7 Engineering, manufacturing, inspection and testing, packing, delivery to site, new

AVR panels, associated power supply modules, protection, control and metering,

software and new components such as pulse transformers, cables or any other devices

of excitation system required for replacement and handing over of the equipment as

detailed in the subsequent sections. The dimension of new AVR panels shall match

with the existing AVR panels

1.3.8 A micro-terminal shall be provided for local control and communication with the AVR

controller during operation. Parameters and measured variables shall be recalled and

indicated through a Liquid Crystal Display of the terminal.

1.3.9 Dismantling the old AVR panel, shifting to station stores and erection, testing and

commissioning of new panels at site.

1.3.10 Supply, laying and termination of additional cables required for inter connection

between panels.





1.3.11 Spares as indicated in clause 4 of this specification shall be supplied by the

CONTRACTOR

1.3.12 Maintenance tools and tackles as described in clause 10 of this specification shall be

supplied by the CONTRACTOR.

1.3.13 Hardware and associated software tools (as applicable) for control, protection and

field setting of various protective devices and limiters, indications and remote

signalling shall be included in the scope of supply. Necessary port and connectivity

cables for connecting to transient recorders, with computer or laptop shall be supplied

along with the equipment.

1.4 Training of PURCHASER's personnel at manufacturer's works on various design,

testing and maintenance aspects and also at PURCHASER's site on installation,

maintenance, carrying out adjustments etc. are included in the CONTRACTOR‟s scope

of supply.

1.5 Whether called for specifically or not, all accessories required for normal operation of

equipment are deemed to be considered as a part of the CONTRACTOR'S scope of

supply.

1.6 The CONTRACTOR shall be provided with available of the existing Diesel Generator

and brushless excitation system (M/s.BHEL Make) to match with technical

requirements of the new AVR offered.

1.7 Based on generator details, the CONTRACTOR shall work out the settings for AVR

and do all necessary adjustment at site required for the optimum performance of the

AVR. CONTRACTOR shall also furnish the settings to be adopted for the limiters and

carry out tests for tuning controllers and limiters, wherever applicable.

1.8 The CONTRACTOR shall note that the availability of work front shall be given

progressively by PURCHASER and it is the intent that the successful CONTRACTOR

takes up and plans work accordingly, following all precautions and safety requirements

1.9 The available drawings and details for the existing system where required would be

furnished to the successful CONTRACTOR for detailed engineering.

1.10 On award of PO, CONTRACTOR shall furnish the schematics, general arrangement

drawings, cable schedules, interconnection schedules, panel wiring diagrams etc for

PURCHASER‟s approval. CONTRACTOR shall also furnish the recommended

relay/limiter settings to be adopted.

1.11 The CONTRACTOR shall submit erection and commissioning procedure and drawings

after placement of order. Among other details this procedure shall also contain detailed

requirement for handling, checklist for assembly and erection, special instructions,

precautions erection drawings, log sheets etc





2.0 CONTENT

3.0 APPLICABLE CODES, STANDARDS AND SPECIFICATIONS

3.1 The list of applicable codes and standards are given below.

CODE TITLE

IS-5 : Colors for ready mixed paints and enamels

IS: 513 : Cold rolled low carbon steel Sheets and strips

IS: 613 : Copper rods and bars for electrical purposes.

IS: 1248 : Direct acting indicating analogue electrical measuring instruments

and their accessories

IS: 1271 : Thermal evaluation and classification of electrical insulation.

IS: 1554 : PVC insulated electric cables

IS: 1897 : Copper strips for electrical purposes.

IS: 2062 : Steel for general structural purposes

IS: 2551 : Danger Notice Plates.

IS: 2705 : Current Transformers.

IS: 3156 : Voltage transformers

IS: 4007 : Terminals for electronic equipment.

Title Clause

Applicable codes, standards and specifications 3

Specification of main equipment and accessories 4

Design and construction details 5

Exclusions 6

Inspection and testing 7

Quality surveillance 8

Installation, testing and commissioning 9

Special tools & tackles for erection and maintenance 10

Warrantee and guarantee 11

Drawings and documents to be submitted 12

Schedule for submission of drawings and test reports 13

Existing AVR Drawings ANNEXURE – I

Load Restoration Sequence ANNEXURE – II

Station Data ANNEXURE – III

Bill of Material ANNEXURE – IV

Guide lines/Scope of IV&V activities for

C-PDS/ COTS CBS ANNEXURE – V

Guaranteed Technical Particulars to be submitted by

CONTRACTOR ANNEXURE – VI

Delivery Schedule And Terms of The Payment ANNEXURE – VII





IS: 5082 : Wrought aluminium and aluminium alloy bars, rods, tubes and

sections, plates and sheets for electrical applications.

IS: 5921 : Metal clad base materials for printed circuits for use in electronic and

telecommunication equipment.

IS: 6005 : Code of Practice for phosphate coatings of iron and steel.

IS: 6297 : Transformers and inductors (Power, audio, pulse and switching) for

electronic equipment)

IS: 6553 : Environmental requirements for semiconductor devices and

integrated circuits.

IS: 6619 : Safety code for semi-conductor rectifier equipment.

IS: 9000 : Basic environmental testing procedures for electronic and electrical

items.

Other International/ National Standards/Codes/ Rules :

IEC:60034 : Rotating Electrical Machines

IEC: 60068 : Basic environmental testing procedure for electrical and electronic

items

IEEE: 344 : Recommended practice for seismic qualification of equipment for

Nuclear Power Generating stations.

IEEE: 387 : Standard Criteria for diesel generator units applied to as stand-by

power supplies for nuclear power generating stations

IEC 61000 : Electromagnetic interference testing of electronic components

IEC 60601 : Radio frequency interference testing of electronic components

IPC : Standards for Printed circuit boards.

IEEE

Std 7-4.3.2

: IEEE Standard Criteria for Digital Computers in Safety Systems of

Nuclear Power Generating Stations

IEEE 421.2 IEEE Guide for Identification, Testing, and Evaluation of the

Dynamic Performance of Excitation Control Systems

Indian Electricity Rules

PP-P-1819 NPCIL reference document for seismic qualification

AERB/NPP

PHWR/SG/

D-1

Safety Classification And Seismic Categorisation For Structures,

Systems And Components of Pressurised Heavy Water Reactors,

January 2003.

AERB/NPP

PHWR/SG/

D-25

CBS of Pressurized Heavy Water Reactors, January 2010.

ED-PROC-

62

Engineering Directorate Procedure for deployment of Pre-developed

Digital I&C System

The design, material, manufacture, assembly, inspection, testing and performance of

relays, panels and other associated equipments shall comply with latest editions

(including amendments thereto) of all currently applicable statutes, regulations and

safety codes in the locality where the equipment will be installed. The equipment shall

also conform to the latest applicable standards. Nothing in this specification shall be

construed to relieve the CONTRACTOR of his responsibility.

Other national standards are acceptable if they are established to be equal to or superior

to the listed standards. In all such cases, however, copies of English translation of such





national standards shall be attached to the tender. The tenders not complying with this

requirement are liable for rejection.

3.2 APPLICABLE DRAWINGS

Given in Annexure-I.

4.0 SPECIFICATION FOR MAIN EQUIPMENT AND ACCESSORIES

This section covers existing systems details, specific requirements for new AVR and

essential spares to be supplied. Based on the existing system details the

CONTRACTOR has to select and size the AVR and its components.

SL.

NO.

DESCRIPTION PARAMETER VALUE

1.0 Technical Data of Diesel Generator

1.1 Make of Engine DLW, model-ALCO251-16,

Cylinder configuration V-type,

3600BHP, 1000RPM.

1.2 Make of Alternator BHEL. Bhopal

1.3 Maximum continuous MW rating 2.4 MW

1.4 Maximum continuous MVA rating 3.0 MVA

1.5 Rated terminal voltage 6600 Volts

1.6 Rated frequency 50Hz

1.7 Rated Power factor 0.8 LAG

1.8 No. of phases 3 Phase

2.0 Technical Data of Existing Brushless

Excitation System

2.1 Make BHEL

2.2 Main Exciter

2.3 Rated armature current/field current 265 A/ 3.5 A

2.4 Rated armature voltage/field voltage 115 V/ 40 V

2.5 No. of phases 3

2.6 Frequency /No. of poles 150 Hz, 18 poles





SL.

NO.


2.7 Make and rating of diodes EUPEC, 350 A, 1800 V PIV

2.8 Permanent Magnet Generator Not Applicable

2.8.1 Make and Type BHEL , Brushless

2.8.2 Rated armature current 265A

2.8.3 Rated armature voltage 115V

2.9 Technical Data of Automatic Voltage

Regulator

2.10

Make and type of AVR BHEL, VXB-22M

2.11 Response time of AVR. < 25 mili sec.

2.12 Dead band of AVR No DB

2.13 Burden of AVR on purchaser‟s PT 20 VA

2.14 AVR provision to limit

generator voltage in case of PT signal

failure

AVR shifts to manual mode

of control (field control

regulator) with generator

not experiencing any jerk

(bumpless transfer)

2.15 AVR provision for limiting the reactive

power sharing when parallel operation

Yes, this is ensured by

compounding circuit in the AVR

2.16 Response time of excitation system < 25 mili sec.

2.17 Response ratio of excitation system. 0.8

3.0 Power and Control Cables

3.1 Conductor Copper

3.2 Insulation HR PVC

3.3 Inner/ Outer sheath FRLS PVC

3.4 Armouring steel

3.5 Applicable standard IS-1554

3.6 Panel wiring PVC

3.7 i) All circuits except CT and power

circuit PVC

3.8 ii) CT circuits PVC





Technical Requirements For New AVR System

SL.

NO.


1.0 Type digital voltage regulator four

redundant channels with two auto

and two manual modes

1.1 Input / Output requirement

1.1.1 Input rated current CONTRACTOR to indicate

1.1.2 Input rated voltage CONTRACTOR to indicate

1.1.3 Analogue and digital output As required by CONTRACTOR

1.2 Performance Requirements

1.2.1 Steady State Accuracy 1% of rated voltage

1.2.2 Voltage Setting Range ± 10% of rated voltage

1.2.3 Response time of AVR <1 sec on load sequence

1.2.4 Steady State Voltage Regulation +1%

1.2.5 Response time of the generator, voltage regulator & excitation system Maximum time interval to recover the generator voltage to +/-5% value for a step rejection of rated load at rated power factor.

Less than 1.0 sec.

1.2.6 Response time of the generator, voltage regulator & excitation system Maximum time interval to recover the generator voltage to +/-5% value for a maximum step load of 400kW at 0.2 pf with base load of 2 MW.

Less than 1.0 sec

1.2.7 Response time of the generator, voltage regulator & excitation system Maximum time interval to recover the generator voltage to +/-5% value at any time during automatic sequential load restoration as per Annexure.

Less than 1.0 sec

1.2.8 Voltage drop during starting of largest motor (400 kW) when D.G set is operating at 2000 kW, or at any point during the specified sequential load restoration as per Annexure.

< 15% (at generator terminals)

2.0 Enclosure of AVR panel

2.1 Material Cold rolled sheet steel

2.2 Thickness of sheet steel 2.5 mm for frames, 2 mm for load

bearing covers / doors

1.6 mm for non-load bearing

covers

2.3 Gland plates 3.0 mm CRCA

2.4 Degree of protection provided by the IP-52





enclosure

2.5 Painting Aircraft grey shade 631 (as per-

IS-5) on outside. Glossy white

inside or RAL-7032 on both

inside & outside. Thickness 110-

130mm.

2.6 Cable entry Bottom Entry

2.7 Meters As required

2.9 Preferred panel dimensions ≤ 800 X 800 X 2310 MM

4.1 List of Mandatory (Essential) Spares: Quantity Detailed in Annexure-IV

Sl.

No.

Item Description

1) 1 Set of all PCBs with controller loaded with approved

software used in one AVR panel. (1 set is all PCB with

controller used in one AVR panel)

2) 3 Set of each type of aux. relay, meter, control switch, timer,

protective relay used consisting of one of each type.( 1 set is

relay, switch, timer, meter used in one AVR panel)

3) 4 Power electronic components (1 set is the power electronic

component used in one AVR panel)

4) 5 HRC fuses for all power electronic components used in the

AVR. (1 set is the HRC fuses for all power electronic

components used in one AVR panel)

5) 6 Control HRC fuses/ MCBs (1 set is the Control HRC fuses

and MCB used in one AVR panel)

6) 7 Ventilation units (As per design of supplied AVR panel)

NOTE:

4.2 The CONTRACTOR shall also include such additional items in the spares offered

which are not covered in the list above but which are necessary for the satisfactory

operation and maintenance of the AVR panel. The details of such additional spares

included together with details of quantities and unit rates shall be given as

“Recommended Spares”.

4.3 In case CONTRACTOR feels that the quantities of spares indicated in the list of spares

needs to be increased, details of the same including quantities of each item actually

used and quantities of corresponding spares recommended shall be given separately.





5.0 DESIGN AND CONSTRUCTION DETAILS

This section covers equipment design and construction, functional requirements of new

AVR system.

5.1 The voltage regulator will be microcontroller/computer based systems (CBS). The voltage

regulator shall have two completely independent Auto (regulating and control)

channels (Auto-1 and Auto-2) and independent Manual channels (Manual-1 and

Manual-2). The Auto channels shall be completely equivalent so that any one channel

can be freely selected as the active channel and the other channel acting as standby.

Similarly manual channels shall be completely equivalent so that any one manual

channel can be freely selected as the active channel and the other channels as standby

channels. Automatic follow up shall ensure that inactive channels always generate same

control variables as the active channel so that a smooth switchover shall be achieved

between active channel to inactive channels during malfunction of the operating

channels or selection of channel (Auto-1/Auto-2/Manual-1/Manual-2/vice versa).

Annunciation during this changeover shall be provided in DGLCP OR AVR panel.

5.2 Functional Requirements:

5.2.1 The AVR shall have following features:

i. Over fluxing Protection

ii. Loss of PT signal protection

iii. Power factor control/MVAR control, reactive current droop for parallel

operation

iv. Soft start function

v. Under voltage detection and external current boosting during short circuit at

generator terminal

vi. Monitoring and alarm of rotating diodes

vii. Alarm & trip functions

5.2.2 In AUTO mode, the generator voltage shall be regulated so that a constant voltage is

produced at the generator terminals and in MANUAL mode, the generator excitation

shall be controlled by the manual reference value.

5.2.3 The voltage regulator shall be capable of supplying excitation current in the event of a

three phase short circuit at the Generator terminals to facilitate operation of the

protective devices and excitation requirements under all specified conditions of motor

starting.

5.2.4 Loss of PT signal due to tripping of MCB/fuse in PT circuit or any other cause shall

not cause over shooting of voltage. Voltage shall be clamped to the nominal value in

this condition





5.2.5 A quadrature droop circuit shall be provided to limit the reactive kVA supplied by the

machine during parallel operation. The droop settings shall be adjustable at site and shall

have adequate range to meet all operating conditions expected. When the DG set is

connected for parallel operation with the grid, the quadrature droop circuit shall

automatically come in the AVR scheme and control the reactive VAR shared by the

Diesel Generator. Failure of this circuit shall be appropriately annunciated.

5.2.6 All the existing control, indications, monitoring and protection shall be implemented in

the newly installed system.

5.3 Security Requirement:

5.3.1 The electronic modules shall have in-built self diagnostic check facility. Appropriate

control actions shall be taken immediately after the appearance of fault defective cards

shall be indicated by LEDs so that trouble shooting is easier. Monitoring of pulse

output and monitoring of output voltage of all power supplies shall be performed

5.3.2 For AVR with computer based system,

i. programming unit or laptop with required licensed software, communication cable

and hardware lock are in the CONTRACTOR‟s scope of supply.

ii. programming unit or laptop used for software diagnostic test, password verification,

and software communication shall be tested during commissioning and IV&V

5.3.3 The CONTRACTOR shall include diagnostic kit along with its instruction manual for

trouble shooting of PCBs used in AVR panel.

5.4 Grounding and Shielding

The type of Grounding and Shielding provided for electronic equipment shall be

indicated in the technical bid. CONTRACTOR shall also provide any special

requirements/provisions with regard to the type of grounding mat arrangement.

5.5 Environmental Requirements:

AVR shall be of proven design. It shall be designed and manufactured to suit the power

plant environment and conditions expected. It should have been qualified to withstand

and operate after experiencing the expected environmental conditions and

electromagnetic, electro static and radio frequency interferences and voltage surges.

The RF and EM emissions from the AVR shall not interfere with other equipment in

the vicinity. Severity levels to which the AVR proposed is qualified shall be indicated

in the offer and detailed type test certificates shall be submitted after the placement of

order. Details of the tests to be carried out are given in Clause 7.3.

5.6 Printed Circuit Boards





5.7.1 All critical PCBs used in the AVR panel shall confirm to class-3 (High Reliability)

grade as per Inter Connecting and Packaging Electronics Standards.(IPC Standards).

Non critical PCBs (i,e those PCBs whose failure does not affect the operation of AVR

system) shall confirm to class-2 requirement of IPC standard.

5.7.2 The material for the PCB laminate shall be glass woven fabric and epoxy resin based,

flame retardant and confirming to type FR-4 or better.

5.7.3 The quality assurance and acceptance norms for PCBs shall be applicable to specified

class of PCBs as per IPC standards.

5.7.4 All critical PCBs shall be provided with interface for connecting external diagnostic

tools which it shall be possible to monitor the healthiness of PCBs and also as a fault

diagnostic facility for identifying defective components.

5.7.5 After completion of all factory tests, PCBs shall be provided with conformal coating

of approved type to protect them from power plant atmosphere encountered at site.

5.7 AVR Panel Requirements

i. AVR Panel shall be completely metal enclosed, free standing, floor mounting,

dust, moisture and vermin proof and identical to the existing panels.

ii. Degree of protection should be IP52

iii. Panels shall be fabricated of CRCA sheet steel of thickness not less than 2 mm

for front, rear and load bearing members and 1.6 mm for sides, top and bottom

portions. Gland plates of all panel shall be 3 mm (thick), non magnetic

iv. The panels shall be free from dents and flaws and sufficiently reinforced to

provide level surfaces resistance to vibration, transportation and installation.

v. The make and type of paints used for primary and final coatings shall conform

to applicable Indian Standards and shall be subjected to the approval of the

PURCHASER. Use aircraft grey shade 631 (as per-IS-5) on outside and glossy

white inside or RAL-7032 on both inside & outside. The total dry film

thickness on the items shall be within 110 to 130 microns. Painted surfaces

shall be tested for adhesion, peel resistance and salt fog test, as per applicable

standards.

5.8 An earthing bus of GI strip shall be provided and extended outside the panel for

connection to the earth. The minimum size of earth bus bar shall be 30*5sq.mm GI

strip. The earth bus shall have provision for connecting to PURCHASER‟s external

earthing connection.

5.9 Reliability Requirements:

The CONTRACTOR shall furnish the average mean time between failures for AVR.

The value of MTBF should not be less than 20000 hrs. The CONTRACTOR shall also

indicate the method by which MTBF value has been arrived at and the first component

which is expected to fail. Calculation for MTBF shall be submitted to review and





approval of PURCHASER. The CONTRACTOR shall also specify the mean time to

repair for AVR.

Failure mode and effect analysis (FMEA) shall be submitted for the AVR.

6.0 EXCLUSIONS

Supply of Permanent Magnet Generator, Complete exciter rotor with diode wheels are

excluded from the scope of work.

7.0 INSPECTION AND TESTING

7.1 Tests at works in accordance with the appropriate clauses of relevant codes and

standards and in addition any test called for by the PURCHASER or his representative

to ensure that the plant being supplied fulfills the requirements of the specification. The

CONTRACTOR shall carry out all the shop tests and inspections specified in the

following clauses in addition to those normally carried out by him

7.2 A detailed document covering procedures for various tests to be conducted on AVR

system shall be prepared by the successful bidder and subjected to the approval of the

PURCHASER. Such a document shall indicate details of test setup, measurements to be

made, acceptance norms, and calculations to be made etc.

7.3 CONTRACTOR shall furnish following type test reports on electronic modules of

excitation system. Modules/ components used in type tests shall not be supplied to the

PURCHASER. However the components/ structures not having vibration related

failures mechanism may be accepted after inspection and due justification. If type test

certificates are not available type tests shall be conducted without any additional cost to

the PURCHASER.

7.3.1 Environmental Tests:

1. Dry heat tests: Temperature at 55º C ± 2 for 4 hrs

2. Damp heat cyclic tests: Temperature 40ºC and 95% relative humidity for

12+12 hours. 2 number of cycles. Total duration 48 hours.

3. Cold test: 5± 2ºC for 2 hours

4. Temperature cycling test: Temperature 5± 3ºC and 70± 2ºC, Dwell time

60min at each temperature. Change over time 02 minutes. Number of cycles 5.

Total duration 10 hours.

7.3.2 EMI/ EMC and RF Tests

1. Electromagnetic compatibility tests.

2. Electrostatic discharge test as per IEC 61000-4-2





3. Radiated Radio frequency Electromagnetic field as per IEC 61000-4-3

4. Electrical fast transient burst immunity test as per IEC 61000-4-4

5. Surge immunity tests as per IEC 61000-4-5

6. Conducted disturbance induced by radio frequency fields as per IEC 61000-

4-6

7. Voltage dips, short interruptions and voltage variations immunity as per IEC

61000-4-11

8. Oscillatory test wave as per IEC 61000-4-12

7.3.3 Hardware reliability analysis needs to be carried out for the base values of MTBF,

MTTR and availability given.

7.3.4 Seismic Qualification Requirement

AVR Panel shall meet the requirement of safe shutdown earthquake (SSE) and five

operation basis earthquake (OBE). Exact seismic spectra shall be given to the

successful bidder. The qualification shall be as per PP-P-1819. AVR panel shall be

considered for acceptance if the stress levels observed during the seismic qualification

testing are demonstrated to be less than permissible limits for the materials used.

7.4 Routine tests at works/ factory

1. Visual

2. Wiring as per drawings

3. Insulation resistance

4. High voltage test

5. Continuity test/Regulation signal flow

6. Power supply check

7. Functional tests at rated and reduced voltage

8. Operation Interlocks & Protections

9. Performance during switchover between channels

7.5 IV&V Requirement

In case of digital AVR, microcontroller/ computer based system used shall be

subjected to Independent Verification and Validation (IV & V) process by

PURCHASER. All documents covered in Annexure-V shall be prepared and

submitted. All required tests at factory and site for IV & V purpose shall be

conducted.





8.0 QUALITY SURVEILLANCE

8.1 General

The general requirements regarding quality assurance, organizational set up for quality surveillance, qualification and experience details of personnel of

quality Assurance department, QA Manual, Mock up test procedures etc. are covered in GCC.

8.2 Quality control plan

This indicates the requirements expected from the CONTRACTOR/manufacturer of the excitation system. Subsequent to the placement of Purchase

Order CONTRACTOR/manufacturer shall submit” for PURCHASER‟s approval a quality assurance plan in line with this document incorporating

specific document numbers for “format of records”, “acceptance norms” and “reference documents

8.3 Abbreviations:

V Verified by

P Performed by

W Witnessed by (After lapse of due notice to NPCIL, manufacturer may proceed with manufacture)

H Hold (Unless a written clearance is obtained from NPCIL, manufacturer shall not proceed to next stage)

1 NPCIL QS

2 Prime Supplier/CONTRACTOR

3 Approved External Laboratory or Sub CONTRACTOR QC (if CONTRACTOR QC / facility not available.)

AD- PC Approved Document such as Tender Document, Purchase order, Drawings & Test Procedures

TR- Test Report

PS- Plant Standard

CHP - Customer Hold Point (Customer is NPCIL)

IS - Indian Standards

IEC - International Electrotechnical Commission standards

IEEE - Institute of Electronics and Electrical Engineers standards

Notes:





Wherever V & W are both indicated , NPCIL QS to witness test or review test report

TRs not more than five year old from date of opening of Part-I of tender shall be reviewed for acceptance. Otherwise test shall be carried out.

Minor: The characteristic of a component, process or operation whose failure neither materially reduce the usability of the product in operation, nor

does it affect the aesthetic aspects.

Major: The characteristic of a component, process or operation whose failure may cause operation failure which cannot be readily corrected

at site or cause substandard performance, increased erection and maintenance cost, reduced life or seriously affect aesthetics or ergonomics.

Critical: The characteristics of a component, process or operation failure of which will surely cause operating failure or intermittent troubles

which is difficult to rectify at site or render the unit unfit for use or safety hazards.

„„Failure “ of a characteristic means failure to meet the „acceptance norms „.

Sampling: Generally in accordance with IS:2500. Sampling will be used as under:-

If 100% “witness” is carried out by “Prime CONTRACTOR”, NPCIL will witness on sample basis, or if 100% “witness” of tests is carried out by

“sub- CONTRACTOR”, “Prime CONTRACTOR” will witness on sample basis.

Any deviation to this QAP shall be brought out by CONTRACTOR in his offer failing which this QAP shall be complied with fully





SAMPLE QUALITY ASSURANCE PLAN FOR DVR PANEL

SL

NO

COMPONENT AND

OPERATION

CHARACTERSTICS CATEGORY TYPE

OF

CHECK

QUANT

UM OF

CHECK

REFERENC

E

DOCUMEN

T

ACCEPTANC

E NORMS

FORMAT

OF

RECORD

AGENCY REMARKS

P W R

1

Material check of

mechanical items

like

aluminium, steel

sheet ,

copper bus bars,

lugs,

gaskets etc.

Dimensional

Chemical

composition

Appearance

Measurement etc

Major

Review

of

Certific

ates/

complia

nce

report

Sampli

ng

Material

Test

Certificate

P.S

I.S

Inspection

Report

3

2

2,1

2

Material check of

electrical items

like

cables, meters,

MCBs

relays, shunts,

heaters

transformers etc.

Dimensional,

Electrical,

Functional test as

applicable

Major

Review

of

Certific

ates/

complia

nce

report

Sampli

ng

Material

Test

Certificate

P.S

I.S

Inspection

Report

3

2

2,1





3

Material check of

electronic items

like

thyristor, resistor,

ICs, inductors,

capacitors,

diodes, transistors

etc.

Dimensional and

Functional test as

applicable

Major

Review

of

Certific

ates /

complia

nce

report

Sampli

ng

Material

Test

Certificate

P.S

I.S

Inspection

Report

3

2

2,1

4

Fabrication of

panels, doors,

side cover, base

frame etc

Visual

Dimensions

Degree of

protection

Major

Visual

Dimens

ions

100%

Sample

P.S

Drawing

Test report

P.S

Drawing

Test report

Inspection

Report

3

2

2,1

5 Painting Paint shade,

coating thickness,

appearance

Major Visual

&

Measur

ement

100% P.S P.S Inspection

Report

3 2 2,1

6

Electronic/Power

module

manufacturing

Appearance,

component

mounting,

HV test,

Functional

Major/

Critical

Review

of

Certific

ates

100%

P.S

I.S

P.S

I.S

Inspection

Report

3

2

2,1

7 AVR Environmental

tests: Dry heat,

Damp Heat and

Temperature

cycle tests, EMI

and RFI tests

Major Testing Sample IEC IEC Test

Report

3

2

2,1





Temperature Rise

Test

Major Testing Sample AD AD Test

Report

3

2

2,1

Functional tests

to demonstrate

AVR capability

to meet all

conditions of

loading of

generator

Major Testing 100% PS PS Test

Report

3

2

2,1

8

Assembly, testing

of racks with

connectors

etc.

Identification of

component

Electrical

continuity, HV

test, pull test etc.

Critical

Physica

l

100%

except

pull test

P.S

I.S

P.S

I.S

Inspection

Report

3

2

2,1

9

Cubicle assembly

Visual,

dimensional

Major

Dimens

ions

100%

P.S

drawing

P.S

drawing

Inspection

Report

3

2

2,1





10

System testing

Visual

Wiring

Insulation

resistance

High voltage test

Continuity

Regulation

Signal flow

Power Supply

check

Functional tests

at rated and

reduced voltage

Operation of

limiters,

Interlocks &

Protections

Performance

during

switchover

between channels

Critical

Tests

Approved

Procedure

Approved

Procedure

Inspection

Report

3

2

2,1

CHP





11 Assembled AVR

panel

IV&V Critical Testing 100% Approved

Procedure

Approved

Procedure

3 2 1 CHP

This is

applicable

if for

CBS is

used in

AVR.

Complete

IV&V

documenta

tion shall

be

completed

before

factory or

site

acceptance

test

11 Packing and

despatch

visual Major Visual 100% P.S P.S Inspection

Report

3 2 2,1

Note: 1. PS - Supplier plant standard

2. IS - Indian standard

3. CHP - Customer(NPCIL) Hold Point

4. TC - Test Certificate

5. Type test certificate for all items / modules shall be submitted





9.0 INSTALLATION, TESTING AND COMMISSIONIG

9.1 The scope of this section covers the details for receipt, storage, erection, commissioning

checks and tests to be done at site

9.2 In may please be noted that being operating plant, up gradation work for all units may

not be possible at a time in one stretch and may have to match with plant shut down.

9.3 As the scope includes disconnection and removal of the existing regulating cubicles all

the necessary tools, tackles and handling facility required for the same shall be brought

by the CONTRACTOR.

9.4 After removing the existing cubicles and sent to stores / designated / identified location,

the new cubicles shall be safely brought to its location, erected and fixed neatly.

9.5 Commissioning checks indicated below are indicative only. However the

CONTRACTOR shall carry out actual commissioning checks on all the equipments

covered in this specification as per manufacturer‟s recommendation and

PURCHASER‟s instructions. The Original Equipment Manufacturer's engineer shall be

present during performance of tests at site and manufacturer's concurrence taken before

completion.

9.6 Preliminary Checks

(a) Check name plate details of every associated equipment according to this

specification.

(b) Check for any physical damage.

(c) Check for level, verticality of panels, tightness of all bolts, clamps and

connecting terminals.

(d) Check cleanliness.

(e) Check earthing.

(f) Check space heaters, lighting receptacles provided.

(g) Check mounting as per approved drawings.

(h) Check for proper termination of all external power and control cables.

9.7 Commissioning Checks

(a) Each wire shall be traced by continuity tests and it should be made sure that

the wiring is as per relevant drawings. All interconnection between

panels/equipment shall be similarly checked.





(b) IR and HV test

(c) Settings of relays, other alarms tripping devices and interlocks as per scheme.

(d) Checking for settings of various limits, checking of calibration of relays and

transducers, ware validation.

(e) Functional checking of all control circuit e.g. closing, tripping, interlock and

alarm circuits including proper functioning of the component/equipment.

(f) Software diagnostic tests, password verification, software communications (if

applicable).

(g) Measurement of output voltage waveform distortion (both SHD and THD)

(h) Synchronization of DG set with the Class-IV and loading

(i) Performance during switch over between channels /modes

(j) Sequential restoration of loads and measuring of voltage drop at generator

terminal and response time of AVR to recover voltage to +/- 5 % value.

(k) Checking of largest motor load of 400 kW starting with base load of 2000 kW

and measuring of voltage drop at generator terminal and response time of

AVR to recover voltage to +/- 5 % value in less than 1 sec

(l) Functional tests on control circuitry including various interlocks and

operation of its protections, alarms and controls.

(m) Functional performance of AVR when DG is connected to grid and run up to

110% load.

(n) Load Rejection Test: On load rejection of 110% , voltage variation should not

be more than +/- 10% in less than 1 sec

10.0 SPECIAL TOOLS AND TACKLES FOR ERECTION & MAINTENANCE

10.1 All Special tools and tackles required for successful erection, site testing &

commissioning of Generator and Excitation system shall be supplied by the

CONTRACTOR and a list of such items shall be submitted along with the data sheet.

11.0 WARRANTEE AND GUARANTEE

Warrantee and guarantee shall be as stated in General Condition of the Contract

attached with the tender

12.0 DRAWINGS AND DOCUMENTS TO BE SUBMITTED





12.1 As part of the bid the CONTRACTOR shall furnish the following

a) General arrangement and scheme drawing for AVR

b) Detailed literature/catalogues all equipment being offered.

f) Any other drawings necessary for the correct and complete understanding of the

proposal.

12.2 On award of contract, three sets of all drawings and all documents shall be sent to

PURCHASER for review and on PURCHASER‟s approval 2 sets shall be sent

incorporating PURCHASER‟s comments, along with soft copy

12.3 Three (3) copies of history docket covering NPCIL purchase order, approved QA Plan,

drawings, inspection and test reports, manuals containing storage, erection,

commissioning and maintenance instructions, recommended spare parts, detailed

catalogues of various components, shipping releases, etc shall be submitted to

PURCHASER in the bound form along with three soft copies in CDs/ Pen drives. No

additional payment will be done for any document supply.

13.0 SCHEDULE FOR SUBMISSION OF DRAWINGS, MANUALS, TEST

REPORTS, ETC

Sr.No Item Duration

(No LD applicable)

1.1 Engineering schedule indicating a list of all drawings,

documents, data, test certificates, manuals, quality

assurance plan, level-2 plan as per supplieretc.

One month of PO

1.2 Quality assurance plan and type test reports Two months of PO

1.3 Drawings - Schematic, General Arrangement, Bill of

material and wiring diagram

Three months of PO

1.4 History document Within one month

dispatch of equipment

14. Delivery Schedule which is applicable of LD and terms of the payment :

See Annexure -VII





ANNEXURE – I

Existing AVR Drawings

Following Drawings/ Information

1. Functional Requirements of AVR

The Automatic voltage regulator ensures stable operation of the synchronous

generators in the entire load range. It ensures very fast recovery of generator voltage

following changes in load demand. The protective features ensure safe operation of

the generator. The equipment automatically regulates the output voltage of a

synchronous generator by providing it with a controlled field supply via an exciter

generator. The equipment is active over the entire load range with negligible dead

band.





2. Existing AVR Diagram and

details:









3. Details of external cabling to other panels:





4. Existing Auxiliary power supply arrangement:





5. GA Drawing of AVR Panel for space availability for new panel





6. Remote Control /Alarm/Indication in MCR / SCADA

As given in inter panel wiring diagram

7. Specification and ratings of CTs and PTs

PT supply 110V, 3φ, 15VA

CT supply 1A, 1φ, 15VA

Short Circuit CT: 300/2 A

Droop/AVR CT: 300/1 A,10 VA

PT mounted on generator : 3.810 KV/415V





ANNEXURE – II

Load Restoration Sequence

Load Description USI No KW

Load start permissive when

restoration is by DG set

Time (Sec.)

Active HPPW Pump 7133-PM-1001 180 KW 25

APW Cooling Pump 7125-PM-1003 200 KW 27

APW Cooling Pump 7125-PM-1004 200 KW 29

Active HPPW Pump 7133-PM-1002 180 KW 31

Primary Feed Pump 3331-PM-1 400 KW 33

Moderator Circulating

Pump

3211-PM-1 200 KW 37

Air Compressor 7510-CP-1002 140 KW 40

ABF Pump 4321-PM-1006 132 KW 44

Air Compressor 7510-CP-1001 140 KW 47

ECCS Pump 3335-PM-1 132 KW 51

ECCS Pump 3335-PM-2 132 KW 55

Ex. Fan SFB, RAB, RB Sy.

Cont.

7343-FM-1003 132 KW 59





ANNEXURE – III

Station Data

1.1 1

.

1

Purchaser Nuclear Power Corporation of India Ltd. (NPCIL)

1.2 Project Title Rajasthan Atomic Power Station Unit 5,6

1.3 Location Rawatbhata, right bank of Chambal river about 6.4 Km

upstream of Ranapratap Sagar Dam (60 Km by road from

Kota).

1.4 Elevation above mean

Sea Level

384 meters above sea level

1.5 Nearest Railway

Station

Railway siding-Kota Jn. on Western Railway, about 60 Km

by road from RAPP-5 to 8 Site

1.6 Nearest Airport Jaipur

1.7 Ambient Air

Temperatures

Maximum 46.5 Deg. C

Minimum 6.7 Deg. C

1.8 Relative humidity 90% max

1.9 Rainfall / year 799 mm

1.10 Climatic conditions

for which equipment

should be designed

The climate is tropical with less rainfall.

1.11 Tropicalisation Required

1.12 Wind Velocity for

which equipment shall

be designed

130 km/hr





1.13 Transport Rail/Road

1.14 Seismology Floor response spectra will be furnished to successful bidder

for analyzing and testing.

1.15 Auxiliary Power Supply : Auxiliary electrical equipment to be

supplied against this specification

shall be suitable for operation on the

following supply systems with

variations as given below.

1.15.1 For AC motors above 200kW : 6600V, 3-phase, 3wire,50Hz

Non-effectively earthed

1.15.2 For AC motors below 200kW : 415V, 3 phase, 3 wire, 50Hz

effectively earthed

1.15.3 Construction power supply : 415V, 3 phase, 4 wire, 50Hz,AC

supply effectively earthed

1.15.4 Panel lighting fixtures/sockets, : 240V, 1 phase, 2 wire,50Hz

space heaters AC supply with neutral lead

earthed.

1.15.5 Instrumentation, controls and annciation : 48V DC supply

1.15.6 Supply variations of AC systems

i) Variation of supply voltage : +10%

ii) Variation in supply frequency : +5%

iii) Combined voltage and : 10%

frequency variation





ANNEXURE – IV

List of Mandatory (Essential) Spares

Sl.

No.

Item Description Quantity

1) 1 Set of all PCBs with controller loaded with approved

software used in one AVR panel. (1 set is all PCB with

controller used in one AVR panel)

4 Set

2) 3 Set of each type of aux. relay, meter, control switch, timer,

protective relay used consisting of one of each type.( 1 set is

relay, switch, timer, meter used in one AVR panel)

2 Set

3) 4 Power electronic components (1 set is the all power

electronic components used in one AVR panel)

2 set

4) 5 HRC fuses for all power electronic components used in the

AVR. (1 set is the HRC fuses for all power electronic

components used in one AVR panel)

2 Set

5) 6 Control HRC fuses/ MCBs (1 set is the Control HRC fuses

and MCB used in one AVR panel)

2 Set

6) 7 Ventilation units (As per design of supplied AVR panel) 2 Nos.

NOTE:

The CONTRACTOR shall also include such additional items in the spares offered

which are not covered in the list above but which are necessary for the satisfactory

operation and maintenance of the AVR panel. The details of such additional spares

included together with details of quantities and unit rates shall be given as

“Recommended Spares”.

In case CONTRACTOR feels that the quantities of spares indicated in the list of

spares needs to be increased, details of the same including quantities of each item

actually used and quantities of corresponding spares recommended shall be given

separately.





ANNEXURE – V

Guide lines/Scope of IV&V activities for C-PDS/COTS-CBS

1.0 Independent verification & validation (IV & V) activity shall cover the review,

verification and validation of Commercial- Pre Developed computer based Systems

(C-PDS) or Commercial off the Shelf computer based Systems (COTS-CBS) in phase

of procurement, development/manufacturing, installation, testing and commissioning

phases.

2.0 The IV& V process for C-PDS shall be carried out in the following stages:

2.1 Review of design and manufacture‟s documents

2.2 Audit of the previous design & development documents

2.3 Validation of standalone system at factory

2.4 Validation of integrated system with plant systems at site

2.5 Preparation of the applicable reports

3.0 Under the review/verification of design document stage: CONTRACTOR shall map

with existing manufacture‟s documents with required documents or prepare the

documents and submit to NPCIL as per Annexure-A for IV & V review process. The

IV & V team shall review all these design/manufacturer‟s documents for their

correctness, consistency & completeness in line of the System Requirements (NPCIL

document) and submit the verification/review report on each document.

5.0 Under the audit of previous design/development document stage: CONTRACTOR

shall offer (not submission) these documents or equivalent documents with mapping

as per Annexure-B at CONTRACTOR/NPCIL premises for IV & V audit only. The

IV & V team shall audit all previous design & development documents for their

correctness, consistency & completeness and submit the audit report on these

documents.

7.0 Validation of standalone system at factory stage: IV & V-team shall carry out the

system verification and validation tests on standalone equipment/system panel(s) at

factory at CONTRACTOR‟S premises (factory) as per the approved system validation

procedure (SVP) and submit System Validation Report (SVR-F). It is to be noted that

these validation tests shall be carried out after completion of the QA tests, but before





shipment of the equipment. This activity shall be included in the QAP with hold point.

The final Shipping Release shall be issued after completion of the validation tests at

factory.

8.0 Validation of integrated system at plant/project stage: IV&V-team shall carry out the

system verification and validation tests on integrated equipment/system panel(s) with

plant systems at plant/project site (NPCIL‟S site) as per the approved system

validation procedure (SVP) and submit System Validation Report (SVR-S). It is to be

noted that these tests shall be carried out after completion of the commissioning of the

system but before actual deployment or operation of the system

9.0 System Validation procedure (SVP) document can be a common document for factory

and site if there are no vast differences in the test cases, test set up and test execution

procedure in the expected environment.

10.0 CONTRACTOR shall ensure availability of all the tools, expert manpower and

resources while conducting the validation tests at factory as well as at plant site.

11.0 IV&V-team shall ensure the proposed system is built as per the system requirements,

standalone tested at factory, functionally tested at project/plant site after integration

with plant systems, the fail-safe operation of the system for safety of the equipment

and the safety of the plant and finally fulfill all the regulatory requirements.

12.0 CONTRACTOR shall submit the document submission schedule for review process

and validation test schedule for validation tests after placement of the purchase order

and ensure that each document is correct, consistence and complete with required

information about the proposed system.





Annexure-A

List of the documents for Comm.-PDS for submission for review

Sr.

No.

List of required design

documents

Equivalent

documents with

mapping

Responsible Agency

1. System requirements (SR) or

Technical specifications (TS) as

part of the Tender

Tender documents NPCIL

2. Product Specification

Compliance (PSC)

OEM/CONTRACTOR/system

integrator

3. Fitness for purpose (FFP). This

should includes

Organization level Quality

Assurance Plan

Product suitability and

quality report

Operating experience report


integrator

4. Configuration Management

Plan-Manufacturer/Developer

(CMP-M)


integrator

5. Verification Plan -Application

Software (VP-ASW)


integrator

6. System Verification and

Validation Plan (SVVP)

Not applicable NPCIL

7. System Architecture Design

(SAD)


integrator

8. Application Programming

Requirements (APR) and

Application Program (AP)


integrator

9. System Build (SB) OEM/CONTRACTOR/system

integrator





10. User Documentations (UD) OEM/CONTRACTOR/system

integrator

11. System Validation Procedure

(SVP)


integrator

12. System Safety Analysis Report

(SSAR) to includes

System safety analysis for

implementation of safety

functions

Single Failure Analysis

Process

Common Cause Failure

Analysis Process


integrator

13. Hardware Reliability Analysis OEM/CONTRACTOR/system

integrator

14. Configuration Management

Plan/procedure during operation

and maintenance phase (CMP-

O&M)

Not applicable NPCIL

Note:-If the details to be covered in some of the above documents are available /covered in a

single document of the manufacturer, then the same would also be considered for acceptance

after review by IV&V team.





Annexure-B

List of previous design and development documents for Audit only not for submission to

NPCIL

SR.

No.

Name of the required

documents

Name of the equivalent

manufacture’s documents

with mapping

Responsible Agency

1. Hardware Quality Assurance

Plan (HQAP)

OEM or

CONTRACTOR/system

integrator

2. Software Quality Assurance

Plan (SQAP)

3. Hardware Requirement

Specifications (HRS)

4. Hardware Design Description

(HDD)

5. Software Requirement

Specifications (SRS)

6. Software Design Description

(SDD)

7. System Integration and Test

Plan (SysITP)





8. System Integration and Test

Report (SysITR)

9. Verification Reports on SRS,

HRS, SDD, HDD

10. Verification Report on

Code/program

11. System Validation Report

(SVR)

12. Certifications/Reports on

Generic design criteria, safety

criteria and quality policy





ANNEXURE – VI

GUARENTEED TECHNICAL PARTICULARS

The CONTRACTOR along with his offer shall furnish following data for the equipments

covered in this specification:

S.No Particulars Value

1.0. Automatic Voltage Regulator

1.1. Type

1.2. Make

1.3. Rated current

1.4. Rated voltage

1.5. Burden of AVR on Purchaser‟s PT

1.6. Response time of AVR

1.7. Accuracy

1.8. Range of voltage Setting

1.8.1 In Auto mode

1.8.2 In manual mode

1.9. Response ratio

1.10. Response time of the generator, voltage regulator & excitation system Maximum time interval to recover the generator voltage to +/-5% value for a step rejection of rated load at rated power factor.

1.11. Response time of the generator, voltage regulator & excitation system Maximum time interval to recover the generator voltage to +/-5% value for a maximum step load of 400kW at 0.2 pf with base load of 2MW.

1.12. Response time of the generator, voltage regulator & excitation system Maximum time interval to recover the generator voltage to +/-5% value at any time during automatic sequential load restoration as per Annexure II

1.13. Voltage drop during starting of largest motor (400 kW) when D.G set is operating at 2000 kW, or at any point during the specified sequential load restoration as per Annexure II

2.0. Functions of AVR

2.1. Reactive current compensation

2.2. PT fuse failure

2.3. Watch dog

2.4. Firing pulse supervision and amplification






2.5. Field current regulation

2.6. Voltage regulation from no load to full load

3.0. Degree of Protection for AVR Panels

3.1. Provisions for remote control, Monitoring, metering,

alarm annunciations are provided?

3.2. Whether all provisions for local control, monitoring,

metering, alarm annunciations as specified are

provided?

3.3. Over all dimensions

3.4. Total weight

4.0. Environmental /EMC/EMI tests performed on

electronic modules

4.1. Severity levels for climatic tests on modules

4.1.1. Dry heat

4.1.2. Cold

4.1.3. Damp heat

4.1.4. Temperature cycling

4.1.5. Vibration

4.2.0. Severity levels for EMC /EMI tests on system

4.2.1. Electrostatic discharge test as per IEC 61000-4-2

4.2.2. Radiated Radio frequency Electromagnetic field as

per IEC 61000-4-3

4.2.3. Electrical fast transient burst immunity test as per

IEC 61000-4-4

4.2.4. Surge immunity tests as per IEC 61000-4-5

4.2.5. Conducted disturbance induced by radio frequency

fields as per IEC 61000-4-6

4.2.6. Voltage dips, short interruptions and voltage

variations immunity as per IEC 61000-4-11

4.2.7. Oscillatory test wave as per IEC 61000-4- 12

4.2.8. Insulation test level

4.2.9. Dielectric test level as per IEC 60255-5

4.2.10. Impulse Voltage test level as per IEC 60255-5

5.0. Whether all software and hardware required for

carrying out logic, setting changes and fault

diagnosis are included in the scope of supply?

5.1. Whether carrying out all settings and submission of

relevant documents as per specification included in

the scope of supply?

5.2. Whether training of PURCHASER‟s personnel

included in the scope of supply?






6.0. Control /Signal Cables

6.1. Voltage Grade

6.2. Conductor material for each type of control cable

6.3. Conductor Size for each sizes and no. Of cores

provided

6.4. Insulation material

6.5. For prefabricated pulse cables

6.6. For control cable

6.7. Reference Standard

7.0. Constructional details of cubicles

7.1. Thickness of sheet steel provided for frames, load

bearing members and doors

7.2. Covers, partitions and other non-load bearing

members.

7.3. Painting and pre treatment process adopted

7.4. Minimum thickness of phosphate provided

7.5. Minimum thickness of painting

8.0. General information

8.1. Whether panels are designed to qualify for the

seismic accelerations given in spectra?

8.2. Whether the tenderer has supplied similar equipment

to any plant located in an area subjected to the

seismic events of the same magnitude or higher and

equipment have performed satisfactorily during such

events.

8.3. Whether the tenderer has carried out seismic tests on

similar equipment to prove their seismic withstand

capability.

8.4. Whether the tenderer has carried out seismic

analysis to determine seismic withstand capability.

8.5. Mean Time Between Failure (MTBF), Mean Time

to Repair (MTTR)

8.6. Recommended Test Frequency

8.7. Impact of ageing on equipment performance

8.8. Life in terms of

(1) Number of cycles of operation

(2) Years of operation.

8.9. Recommended calibration frequency of relays,

meters





Annexure-VII

DELIVERY SCHEDULE AND TERMS OF THE PAYMENT

Delivery schedule:

The time schedule given below is indicative. The actual schedule shall be drawn up by the

contractor at the time of bidding, which should be less than or equal to mentioned in delivery

schedule: (LD would be applicable for if bidder fail to supply within Expected Milestone Activity

Delivery schedule)

Sl.

No.

Particulars Expected Milestone Activity

Delivery schedule

Supplier’s

compliance in Y/N

or Months

1 Supply of all AVR at

RAPS site (All the supply

items as per purchase

order)

18 months from placement of PO

including IV&V at factory, type

test and seismic test for this tender.

2 Erection &

commissioning with

IV&V at site of new

AVRs along with removal

of old AVR.

A. To be completed within 24

months from date of

placement of PO

B. Erection and all

commissioning related to

any one AVR is be

completed within 5 days

(120 hrs) of front given by

NPCIL (providing work

permit)

Terms of the payment:

1. For Supply item:

i. 70% payment on material received and accepted at site.

ii. 20% on submission of completion certificate for respective AVR

commissioning at site.

iii. Remaining 10 % on completion of complete PO.

2. For testing (Seismic ,Type test, IV &V at factory) : On Successful completion of the testing and submission of the report to EIC,

Completion certification for the item will be issued by EIC. 100% payment

will be done as per PO on submission of Completion certification.





3. For Task Activities: (Item No. 2)

i. 90% payment on submission of completion certificate for respective

AVR.

ii. Remaining 10 % on completion of complete PO.

WARRANTY:

18 months from material supply (From date of receipt of last lot) or 12 month from

date of completion of PO in all respect.

LIQUIDATED DAMAGES:

1. In case of the delay in supply of new AVR, LD will be levied as per

Purchase order value for the supply item including testing‟s (Type test , IV&V at

factory and seismic test).

2. In case of delay in completion of task activities (including

erection/commissioning) as per scope of the work, LD would be levied on

Purchase order value for same job.

Documents

TECHNICAL SPECIFICATION FOR REPLACEMENT OF AVR FOR