Svenska Kraftnät’s requirements for documentation in cable ... · PDF filerequirements for documentation in cable ... lists for underground and submarine power ... in terminal clamp

UNIT, BUSINESS AREA OUR DESIGNATION AD, Plant documentation TR08-05

DATE CONSULTATION 2014-09-08 NT, NK, NL, AS,

AFL, KI TECHNICAL GUIDELINES

ISSUE APPROVED 3 Td

Svenska Kraftnät’s requirements for documentation in cable projects - Applies for installation underground, underwater or in a tunnel

This technical guideline defines Svenska Kraftnät’s requirements for documentation in power cable projects. The guideline is to be applied in both new construction projects and in reconstruction projects.

Updates Revision Change notification Date

1 First issue of the document 2011-07-04

2 Chapter 2.1 Project documentation has been issued and general clarification and grammatical adjustments have taken place.

2012-06-20

3 Parts of TR08-05:2 submarine cable and TR08-05:3 tunnel and bridge have been transferred to this TR. OF opto has been omitted and a new TR08-07 has been produced for fibre-optic cable. TR08-05:1 renamed TR08-05. The entire document has been updated throughout and partially reworked. Document lists for underground and submarine power cables as well as those laid in tunnels have been collected in the same document. (revised by Gunnar Gehlin, AFL)

2014-06-18

Contents

1 Introduction .............................................................................................................. 4

1.1 General ......................................................................................................... 4 1.2 Drawing requirements ................................................................................ 4 1.3 Sample drawings ......................................................................................... 4 1.4 File and folder name .................................................................................... 5

2 Document lists ........................................................................................................... 5

2.1 Division into document groups ................................................................... 5 2.1.1 Contents ......................................................................................... 5 2.1.2 Drawings ....................................................................................... 5 2.1.3 Situation documentation .............................................................. 5 2.1.4 Technical specifications ................................................................ 5 2.1.5 Earthing presentation................................................................... 6 2.1.6 Soil investigations/Bottom investigations .................................. 6 2.1.7 Calculations ................................................................................... 6 2.1.8 Measurements ............................................................................... 6 2.1.9 List of suppliers ............................................................................. 6 2.1.10 Technical quality documentation ................................................. 6 2.1.11 Technical descriptions .................................................................. 6 2.1.12 Material specifications ................................................................. 6 2.1.13 Photographs .................................................................................. 7 2.1.14 Maintenance document ................................................................ 7

2.2 Document list underground cable .............................................................. 7 2.3 Explanations for document list underground cable ................................ 12 2.4 Document list submarine cable ................................................................. 15 2.5 Explanations for document list submarine cable .................................... 19 2.6 Document list cable laid in tunnel ............................................................ 21 2.7 Explanations for document list cable laid in tunnel ................................ 25 Appendices – Sample drawings ........................................................................... 28

1 Introduction

1.1 General This technical guideline (TR08-05) itemises the documents, drawings and other

documents which are to be supplied to Svenska Kraftnät (Svk) in connection with

projects that involve new construction or reconstruction of power cable installations in

ground, water, tunnels or bridge structures.

The documentation according to this technical guideline shall include all plant

components and all equipment included in relevant cable projects. Project boundary to

adjacent projects is normally in terminal clamp for top bolt on the respective cable

termination. Racks for installation of cable terminations are normally included in the

cable project. Every cable project will be unique with respect to design and scope. The

requirements for documents according to document lists in this TR must therefore be

read as applicable where appropriate.

A cable project can be either a purely underground, submarine or tunnel cable project, or

a combination of them. In the latter case, the specific requirements for the

documentation for the respective part is derived from the appropriate section 2.2, 2.4 or

2.6 below.

1.2 Drawing requirements All drawings produced in the project with Svenska Kraftnät’s drawing number shall be

delivered in file format according to the document list further down in this TR.

Furthermore, all drawings for final documentation produced in the project shall also be

delivered in the file format ”Portable Document Format” (PDF).

All drawings are to be supplied in a scale suitable for the respective drawing, so that the

plant sections, components or equipment that the drawing presents are clearly set out

and the drawing is reasonably legible. Standard scales according to Svenska Kraftnät’s

technical guideline for drawings TR08-02 shall be used. An appropriate standard scale

shall be selected so that the plant sections, components or equipment that the drawing

presents are clear and legible. All drawings are to be of the ”As built” type.

All drawings described in this technical guideline where the file format is DWG, shall

have Svenska Kraftnät’s drawing frame and drawing number in accordance with TR08-

02. The requirements for some drawings are clarified in section 2.3 below.

1.3 Sample drawings To ensure that the drawings contain the information which Svenska Kraftnät intends, a

number of sample drawings have been produced. The sample drawings only show how

the documentation of the technical content should be configured, and not how actual

designs should be configured. Sample drawings are shown in appendices. For detailed

requirements for drawings see TR08-02.

1.4 File and folder name The document list in chapter 2 presents the documents which are to be delivered to

Svenska Kraftnät. The documents are to be delivered in a folder structure which

corresponds with the order in the document list. The table headings constitute folder

level 1, the section designations constitute folder level 2, and so on. The file names shall

comprise an informative text which makes it possible to determine the file’s contents

without the file having to be opened and read.

Below is an example of a limited part of the folder structure.

2 Document lists

2.1 Division into document groups The document lists below list the drawings and other documents which are to be

supplied as final technical documentation from the project. The following groups of

documents apply:

2.1.1 Contents Shall provide a summary of what is included in the technical documentation.

2.1.2 Drawings Drawings shall be supplied presenting the built plant’s design and construction both in

outline and in detail. The drawings can be general plans, detailed drawings, design

drawings or construction drawings. Drawings shall be dimensioned to the extent

required for the respective drawing’s interpretation and legibility. Construction drawings

shall be provided with bills of materials.

2.1.3 Situation documentation The aim of the situation documentation is to present the built plant’s geographic location

(coordinates) based on data entered. The situation documentation shall include both x/y

coordinates and z coordinate. TR08-06.

2.1.4 Technical specifications Document which shall present detailed technical data for plant section, apparatus,

component, equipment or similar supplied. The document is usually a data sheet, but

can also comprise an equivalent brief summary. The content can be electrical,

mechanical, thermal data/performance/requirement, material, dimensions, weights, etc.

2.1.5 Earthing presentation The document group shall show how the built cable installation's earthing system is

designed and constructed. This applies to both so-called "functional" and "protective"

earthing. Design and earth electrode resistances measured are to be presented. Svenska

Kraftnät’s earth electrode protocol shall be used and adjusted when necessary.

2.1.6 Soil investigations/Bottom investigations Shall present implementation and results of any soil investigations (cable underground

or in a tunnel) or bottom investigations (submarine cable). Can apply to, for example,

geotechnical investigations with the aim of examining the ground's character, soil type,

stability etc., thermal surveys, or investigations of underground water levels. For

submarine cables it entails documenting bottom conditions and finding a suitable route

etc.

2.1.7 Calculations Any electrical, thermal or mechanical calculations that the cable supplier or contractor in

the project has performed with the aim of ensuring the function and/or dimensioning a

part of the plant supplied are to be presented here.

2.1.8 Measurements This document group comprises the results from the measurements performed within

the framework of the project. It might involve measurements of thermal resistivity in the

ground, measurements of earth electrode resistance or something else. The results from

the impedance measurement of the cable system which take place after completion shall

also be presented here. However, measurements that are included in the supplier’s final

testing after installation are not referred to under this heading, Site Acceptance Test

(SAT).

2.1.9 List of suppliers Information about suppliers of different materials and equipment is presented here. It

might involve material included in the cable system per se, but also material in contracts.

2.1.10 Technical quality documentation Records of tests performed according to relevant standards are presented here. This

concerns both qualification tests (Type Test) and tests during manufacturing/production

(Factory Acceptance Test, FAT) and tests after installation (Site Acceptance Test, SAT).

Inspection records and similar from surveys and inspections during the course of the

project are also presented here.

2.1.11 Technical descriptions Documents produced which have the aim of providing a technical account of the cable

system, and/or parts of it. The documents can also provide a technical description of

assembly, laying or installation of the plant or parts of it.

2.1.12 Material specifications Documents that present composition/content of certain materials used in cable systems,

components, equipment, filling material or similar. It might involve environmentally-

related declarations, or quality/performance-related declarations (e.g. the composition

of thermal protective filling).

2.1.13 Photographs Photographs are primarily to be used to document plant sections which are not normally

visible, but which for various reasons it is beneficial to show in a photograph, e.g.

equipment for and design of joint locations in the ground. Photographs can also be used

to advantage to document elements in the production process, or to document tests and

checks performed on equipment delivered.

2.1.14 Maintenance document Examples of what is presented here are the supplier’s method descriptions for cable

splicing and assembly of cable terminations, recommendations for maintenance and

service of equipment delivered, as well as recommendations for storage of spare parts.

2.2 Document list underground cable In this technical guideline, underground power cable refers to power cable that is

designed to be laid on land, and which is either laid directly in the ground (excavated or

blasted cable trench), in a pipe in a cable trench, in a concrete-encased pipe or

equivalent, in a culvert at ground level, or through laying without excavating, e.g. guided

drilling.

In exceptional cases, cable designed to be laid on land (provided that it is equipped with

secure radial water barriers), may be laid in shallow lakes or equivalent. Such laying is

also included in this document list.

MK Underground cable Description

File type Document/Item

MK00 Contents MK00.01 Document list Complete list of all documents and other items included in

the documentation. Document name, revision number, issue/revision date shall be shown.

xls/xlsx

MK01 Drawings MK01.01 Drawing list Complete list of drawings. Drawing number shall be

indicated. Drawings shall be furnished with Svk drawing number

xls/xlsx

MK01.02 List of cancelled drawings in the Bank

xls/xlsx

MK01.03 General plan cable route The drawing shall present an overview of the cable’s route and geographic location. See in addition description under section 2.3.

DWG + PDF_A

MK01.04 Plan drawing & Profile drawing The drawing shall present the power cables surveyed in plan and profile. Height scale shall be shown. Any marking poles shall be set out with surveyed positions.

DWG + PDF_A

MK01.05 General plan station installation The drawing shall show location of cable terminations within station area. The drawing (which can be a site plan of the station) shall show other vital parts of the station. Wiring connected to the power cables shall be shown.

DWG + PDF_A



MK01.06 General plan joint location The drawing shall present the joint location’s design and arrangement. Joint locations with different designs are to be presented in separate drawings. See in addition under section 2.3.

DWG + PDF_A

MK01.07 Detailed drawings/Cross sections with normal underground cables (Direct Buried).

Where applicable, the drawings shall show trench sections, i.e. cross sections of the cables’ positions in the cable trench. See in addition under section 2.3.

DWG + PDF_A

MK01.08 Detailed drawings/Cross sections when laying piping.

Where applicable, the drawings shall show cross sections of piping. See in addition description under section 2.3.

DWG + PDF_A

MK01.09 Detailed drawings/Cross sections when laying culverts.

Where applicable, the drawings shall show cross sections of the cable installation when laying culverts. See in addition description under section 2.3.

DWG + PDF_A

MK01.10 Detailed drawings/Cross sections when intersecting other infrastructure

The drawings shall show relevant cross sections of the cable installation at crossing point with other infrastructure, such as other mains or roads/railway etc. See in addition description under section 2.3.

DWG + PDF_A

MK01.11 Assembly drawing of cable termination

The drawing shall show the cable termination fitted on its rack, as well as cable current transformers, junction boxes, PD-measuring boxes etc. and wiring and earthings. Location of PD-sensors shall be set out.

DWG + PDF_A

MK01.12 Detailed drawing of joint location The detailed drawing shall present the joint location’s complete design in more detail than the general plan. See in addition under section 2.3.

DWG + PDF_A

MK01.13 Design drawings concrete Drawings which show design of any base plates for joint location, or design of any concrete enclosures for junction boxes or similar.

DWG + PDF_A

MK01.14 Design drawings steel Design drawings for racks for cable terminations shall be presented, as well as design drawings for any assembly components for junction boxes etc. If adapters or similar are required for assembly of cable terminations on racks, design drawings for these shall also be presented.

DWG + PDF_A

MK01.15 Detailed drawings cable joints This refers to the supplier’s/manufacturer’s detailed drawing of the cable joint’s construction.

DWG + PDF_A

MK01.16 Detailed drawings cable termination This refers to the supplier’s/manufacturer’s detailed drawing of the cable termination’s construction.

DWG + PDF_A

MK01.17 Detailed drawings cable clamps This refers to the supplier’s/manufacturer’s detailed drawing of the design of cable clamps’ supplied. (Cable clamps are used for cable terminations and if necessary for securing joint location.)

DWG + PDF_A

MK01.18 Detailed drawings junction boxes etc.

This refers to the supplier’s/manufacturer’s detailed drawings of junction boxes/link boxes or measuring boxes supplied.

DWG + PDF_A

MK01.19 Phase sequence diagram See description under section 2.3. PDF_A MK01.20 Earthing diagram See description under section 2.3. PDF_A

MK02 Situation documentation MK02.01 Coordinate lists and files The entire cable installation including vital parts such as

joint locations, concrete enclosures, connection chambers, fibre-optic chambers, pipe laying etc. shall be surveyed and presented according to Svk’s instructions, see TR08-06.

See TR08-

06

MK03 Technical specifications MK03.01 Technical specification power cable This refers to the supplier’s technical specification

(Design Report), partly in words, of design/construction of the cable, as well as data sheets which present electrical, thermal and mechanical data, as well as information about dimensions and weight and handling the cable.

PDF_A

MK03.02 Technical specification cable joints This refers to the supplier’s technical specification in words of the design of the cable joint supplied, as well as data sheets which present electrical, thermal and mechanical data, as well as information about dimensions and weight for complete joint housings.

PDF_A



MK03.03 Technical specification cable termination

This refers to the supplier’s technical specification in words of the design of the cable termination supplied, as well as data sheets which present electrical, thermal and mechanical data, as well as information about dimensions and weight for complete cable termination.

PDF_A

MK03.04 Technical specification ducting pipe The supplier’s data sheet and drawings for product supplied.

PDF_A

MK03.05 Technical specification cable current transformers

The supplier's data sheet and drawings for component supplied

PDF_A

MK03.06 Technical specification fibre-optic cables

The supplier’s data sheet/technical specification for fibre-optic cables supplied for communication or DTS

PDF_A

MK03.07 Technical specification junction boxes and earthing boxes

The supplier’s data sheet/technical specification for component supplied

PDF_A

MK03.08 Technical specification cable ties, stripes or means of attachment for cable

The supplier’s data sheet/technical specification for component supplied. Here, means of attachment refers to any cable clamps or equivalent at joint locations.

PDF_A

MK03.09 Technical specification fibre-optic chambers or any other chambers

The supplier’s data sheet/technical specification for chambers supplied

PDF_A

MK03.10 Technical specification hoses/pipes for communication cables

The supplier’s data sheet/technical specification for pipes and/or hoses supplied

PDF_A

MK03.11 Technical specification equipment for temperature monitoring (DTS)

The supplier’s data sheet/technical specification for system solution supplied. The system’s performance shall be specified. Shall be supplemented with a technical description.

PDF_A

MK03.12 Technical specification equipment for PD-measurement

The supplier’s data sheet/technical specification for solution supplied. Measurement performance etc. shall be specified. Shall be supplemented with a technical description

PDF_A

MK03.13 Technical specification and marking of pipe system in electric power installations

Cable marking poles. AMA EL. YTB.1632 Shall be entered with coordinates in Sweref99 TM

PDF_A

MK04 Earthing presentation MK04.01 Earthing description A comprehensive description of the earthing system’s

design. The description shall be sufficiently detailed to enable understanding of the technical construction. Integral components/equipment shall be specified.

PDF_A

MK04.02 Earthing map Planimetric map in scale 1:2,000 of cable installation, earth wires and earth electrodes drawn in.

DWG + PDF_A

MK04.03 Measuring protocol for step and touch voltages

If this is required: Protocol which shows results of measurements performed of step and touch voltages incl. mapping of low voltage network

PDF_A

MK05 Soil investigations MK05.01 Soil investigation records Results of soil investigations performed are to be

presented. Relevant investigations are mapping of soil types, stability assessments, surveys of ground resistivity etc. Exploratory drilling is also accommodated under this heading. Where cables are laid in shallow lakes and similar, results from bottom surveys can also be included.

PDF_A

MK06 Calculations MK06.01 Capacity calculations The supplier’s calculation results for the expected thermal

fan out for cable systems supplied, under given/assumed conditions. Likewise, results from calculation of the cable system’s short-circuit resistance shall be presented.

PDF_A

MK06.02 Mechanical calculations Any mechanical calculations performed within the framework of the project shall be presented here. For example, it might involve calculations due to modifications or additions to original designs.

PDF_A

MK06.03 Geotechnical calculations Any geotechnical calculations performed within the framework of the project shall be presented here. For example, it might involve stability calculations to ensure carrying capacity.

PDF_A

MK07 Measurements (not included in testing)



MK07.01 Measuring protocol ground resistivity

Provided that such measurements are performed, results of measurements of the ground’s thermal resistivity in [K•m/W] before excavating the cable trench are to be presented here

xls/xlsx, PDF_A

MK07.02 Measuring protocol compaction control

The results of measurements taken of degree of compaction in cable foundation and protective filling (Troxler measurement or equivalent method) are to be presented here.

xls/xlsx, PDF_A

MK07.03 Measuring protocol sheath test after cable laying

The results from sheath tests performed in connection with laying power cables (not to be confused with sheath test included in SAT) are to be presented here.

xls/xlsx, PDF_A

MK07.04 Measuring protocol impedance measurement

The results of measurements taken of cable joint’s plus-, minus- and zero-sequence impedances after completion, but before commissioning, shall be presented here. To be performed by cable supplier or another party.

xls/xlsx, PDF_A

MK07.05 Measuring protocol earth electrode measurements

In accordance with Svenska Kraftnät Excel template (modified for cable project).

xls/xlsx

MK08 List of suppliers MK08.01 List of materials suppliers A list of qualified suppliers of critical materials, such as

insulating oil, PEX-material, compound material joints etc. xls/xlsx, PDF_A

MK08.02 List of equipment suppliers A list of suppliers of accessories/equipment, such as SVLs, DTS systems etc.

xls/xlsx, PDF_A

MK09 Technical quality documentation

MK09.01 Inspection record Records from surveys and inspections performed are to be presented here. Relevant inspections are checking cable trench, conduit foundation, protective filling, checking after laying cable, backfilling, assembly work, as well as Final inspection, Operational inspection, Guarantee inspection.

xls/xlsx, PDF_A

MK09.02 Measuring protocol thermal protective filling

The supplier’s records showing that the thermal sand supplied meets the set requirements are to be presented here.

PDF_A

MK09.03 Measuring protocol bentonite filling The supplier’s records showing that the thermal filling supplied (bentonite) meets the requirements are to be presented here.

PDF_A

MK09.04 Records Type Test Records of tests the supplier has performed on cable and all accessories included (cable joints and cable terminations). Type test of complete cable systems shall be presented. Type testing of junction boxes shall also be presented. The type test shall be performed according to applicable IEC standards. Tests for HVDC cables shall be performed according to Cigré TB 496

PDF_A

MK09.05 Records of Sample Test Records of sample tests performed by the supplier. According to applicable IEC standard. Tests for HVDC cables shall be performed according to Cigré TB 496

PDF_A

MK09.06 Routine test Records of routine tests performed by the supplier. According to applicable IEC standard. Tests for HVDC cables shall be performed according to Cigré TB 496

PDF_A

After Installation Tests MK09.07 Records of Sheath Tests (included

in SAT) Records of sheath tests (DC) of complete cable systems the supplier has performed, as well as cross-connection systems where applicable. According to IEC

PDF_A

MK09.08 Records of Phase Sequence Tests Records of phase sequence tests the supplier has performed. According to customary standards.

PDF_A

MK09.09 Records of PD measurement Test records from PD measurements on all accessories fitted with PD sensors. If PD sensors are installed and performed according to the supplier’s standard.

PDF_A

MK09.10 Records Impedance measurement Test records from measurements performed by the supplier of plus-, minus- and zero-sequence impedance data.

PDF_A

MK09.11 Records of AC or DC test (Operational test)

Records of AC tests performed by the supplier. The test is to be performed according to applicable IEC standards and/or according to agreement.

PDF_A



MK09.12 Records TDR (Time Domain Reflectometry)

Where appropriate: Records of TDR measurements performed by the supplier.

PDF_A

MK09.13 ITP (inspection and test plan) Information test and quality control shall be implemented

PDF_A

MK09.14 NCR (non conformance report) Deviation reports, ISO9001 PDF_A

MK10 Technical descriptions MK10.01 Technical description cable

systems The supplier’s overall technical description of cable systems installed. The description shall present the system’s fundamental structure and function, including main integral components and screen connection.

PDF_A

MK10.02 Technical description cable installation

Description of cable installation’s construction, based on AMA

xls/xlsx, PDF_A

MK10.03 Technical description DTS system The supplier’s overall description of structure and function of system supplied for measurement of the cable temperature, DTS system (if installed). The description shall set out functional principle, as well as how and where measurement/monitoring takes place, installation of measurement fibre etc.

PDF_A

MK11 Material specifications MK11.01 Material specification protective

filling The supplier’s data sheet/technical specification for thermal material supplied. Screening curve shall be presented.

PDF_A

MK11.02 Material specification filling material for pipe laying

The supplier’s data sheet for bentonite mixture or equivalent supplied

PDF_A

MK11.03 List of materials (MSDS) The supplier’s summary of content declarations for relevant material included in cable and accessories. Primarily applies to insulating oils, any compound materials, plastics.

PDF_A

MK12 Photographs MK12.01 Photographic documentation of joint

locations The photographs shall document all joint locations. The photographs shall be taken when the joint location is fully completed technically, but before protective filling/backfilling has been implemented. A sketch with a north arrow to show where north is, is to be placed in the trench when photographing the joints in the trench.

JPEG

MK13 Maintenance document MK13.01 Maintenance manual Cable system The supplier’s specific advice and instructions for

operation and maintenance of cable system supplied.

PDF_A

MK13.02 Instructions cable laying The supplier’s specific advice and instructions for cable laying and handling of power cable supplied.

PDF_A

MK13.03 Method description cable splicing The supplier’s description as a basis for correct assembly of cable joints (spare parts) supplied

PDF_A

MK13.04 Method description Assembly of cable terminations

The supplier’s description as a basis for correct assembly of cable terminations (spare parts) supplied.

PDF_A

MK13.05 Repair agreement Cable splicing A repair agreement shall be signed with the cable supplier to ensure rapid access to repair staff and resources in the event of a cable fault.

PDF_A

MK13.06 List of spares The supplier shall compile a list of all spare parts (cable, joints, end parts etc.) which have been supplied. The document shall also include instructions for storage and handling of the spare parts, as well as information about the predicted useful service life.

PDF_A

MK13.07 Operation and Maintenance Instruction for DTS system

Where appropriate: The supplier’s specific advice and instructions for operation and maintenance of DTS equipment supplied. The instruction shall include operation of the system.

PDF_A

MK13.08 Traceability documentation Protocol presenting which cable lengths (unique number) are installed where, ID no. of all joints, cable terminations, etc. installed shall be set out.

PDF_A

2.3 Explanations for document list underground cable Explanations and clarifications of certain of the points in the document list according to

the above are provided below.

MK01.03 General plan cable route A general plan shall function as an overall document which clearly shows the cable

installation's route. The general plan shall refer to underlying drawings. The type and

number of the various underlying drawings shall be clearly set out on the general plan.

The general plan shall be according to scale and drawn up in such a way as to clearly set

out the cable connection’s geographic location. Roads, buildings etc. in the vicinity of the

cable route shall be shown. Any pipe installations, intersections with other mains

structures and similar shall be marked on the drawing. If legibility requires it, the

general plan shall be divided into a number of drawings. For example, see appendix 1.

MK01.06 General plan joint location The drawing shall present the joint location’s design and arrangement. The locations of

the joint housings shall be set out, as well as other equipment such as junction boxes,

boxes for PD measurement etc. Any concrete enclosures or chambers for these boxes

shall also be shown. If a concrete slab or equivalent has been placed in the jointing pit,

this shall be shown.

MK01.07 Cross sections with normal cable laying in the ground Sectional drawings which show the cable trench’s dimensions and the power cables’

positions in the cable trench shall be produced for the different installation

configurations that occur along the cable route. Sectional drawing with direct burial in

the ground shall as a minimum show:

• Trench depth

• Trench bottom width

• Dimensions of protective filling (cable sand or equivalent)

• Depth of filling above the cables

• The power cables’ positions, with reciprocal distance between cables.

• Location of cable protection and warning mesh or equivalent

• Type of backfill/cable sand

• Type of surrounding ground (moraine, earth, clay, etc.)

• Any surface layer over the cable installation

• Location of earth wires.

• Location of any fibre-optic cables/empty pipes for communication

• Location of any fibre-optic cables for temperature measurement (DTS)

• Other mains structures (electricity, sewage, water, district heating, telecoms,

fibre-optic) parallel to the cable installation which are located at a distance of ≤ 5

m from outer cable.

Each sectional drawing shall be marked with coordinates (starting point) according to

Svenska Kraftnät’s technical guideline for surveying, TR08-06, and shall also be given an

ID-number. Coordinates shall agree with coordinates entered for the cable installation.

The sectional drawing’s starting point and ID shall be set out in the general plan. Each

sectional drawing shall apply until reference to another sectional drawing is made.

Direction in relation to the next sectional drawing that applies is governed by the

surveying.

Breakpoint for production of new sectional drawing is when there is a significant change

in the particular cross section. Examples of significant changes are when trench depth

and/or filler depth changes by more than 20 cm, if the power cables’ (or groups of

cables) reciprocal distance changes by more than 10 cm, if protective filling or

surrounding soil type changes, or if a change occurs in the location of cable

protection/warning mesh. There is also a breakpoint if a change occurs in the

installation of earth wires or fibre-optic/telecoms lines, or in a jointing chamber. For

example, see appendix 3.

Sectional drawings for joint locations and intersections with another infrastructure are

dealt with separately.

MK01.08 Cross sections for pipe laying Pipe laying here refers to all pipe laying, i.e. ”normal” pipe laying in an excavated cable

trench, pipe laying after guided drilling, hammer drilling or similar, or e.g. ducting pipe

embedded in concrete or similar. In this context, pipe laying also includes crossing water

courses or other catchment areas, where the installation cannot be regarded as

submarine cables. Sectional drawing for pipe laying shall as a minimum show:

• Installation depth

• The pipes’ positions, with reciprocal distance between them.

• Pipe diameter and pipe thickness

• Pipe material and pipe filling (material)

• Location of any cable cover and warning mesh or equivalent

• Type of backfill/cable sand and/or type of surrounding soil


• Any reinforced cable protection, for example concrete slabs or similar.






m from outer cable.

Each sectional drawing shall be marked with coordinates according to the same principle

described under MK01-07 above. Breakpoint for production of new sectional drawing is

the same as for normal laying in the ground, when significant changes occur in

applicable cross sections. With, for example, guided drilling with a substantial

installation depth and a substantial distance between pipe/cables, there is less sensitivity

for deviations and assessment of significant changes may therefore be made from case to

case here. For example, see appendix 2.

MK01.09 Cross sections with culvert laying Culvert laying refers here to all cable laying in closed or open (with cover or grate)

culverts/trough of concrete or equivalent, located at ground level. Sectional drawing for

pipe laying shall as a minimum show:

• Trench depth for the culvert

• The culverts/trough’s dimensions (width and height)

• Material thickness and material in the construction

• The power cables’ positions with reciprocal distance

• Any occurrence of filling material and/or cable sand

• Any spacers, brackets or cable clamps etc.






m from outer cable.


described under MK01-07 above. Breakpoint for production of new sectional drawing is

the same as for normal laying in the ground, when significant changes occur in

applicable cross sections. For culvert laying a change in the culvert’s dimensions of more

than 20 cm is counted as significant.

MK01.10 Cross sections when intersecting with other infrastructure Specific sectional drawings shall be produced at points where the cable installation

intersects with another infrastructure. Infrastructure here refers to roads, railways etc.,

as well as other mains structure (electricity, telecoms, fibre-optic, water, sewage, district

heating etc.). In addition to the specifications under MK01.07, MK01.08 or MK01.09

above, sectional drawings for intersections with other infrastructure shall as a minimum

also show:

• Positioning/location for intersecting infrastructure

• Distance between power cables and intersecting infrastructure

• With roads/railway: Dimensions of and material in roadbed resp. embankment

and its substructure. Any protective or strengthening measures.

• With mains structure: Type of mains, mains dimension and material. Where

appropriate, voltage level. Number of intersecting mains (if more than one).


described under MK01-07 above.

MK01.12 Detailed drawing joint location In addition to what is stipulated for general plan according to MK01.06, the detailed

drawing shall also present the power cables’ locations, any cross-connection cables,

earthing cables, measurement cables, as well as earth wires/counterpoise wires. Location

of any PD sensors shall be shown. Individual cables shall be ID marked.

MK01.19 Phase sequence diagram A phase sequence diagram shall be presented, where the location of phases L1, L2 and L3

is clearly set out along the entire cable route from station to station, through any pipe

ducting and past joint locations. Any transposition points shall be clearly shown, and the

phases’ location before and after such transposition points shall be presented. Linear

measurement in m at each transposition point shall be given. The phases’ positions

within the respective cable group shall be shown in the cross section. For example, see

appendix 4.

MK01.20 Earthing diagram A diagram of the cable system's earthing system shall be produced. The diagram shall

present earth wires/counterpoise wires, earth electrode, as well as the cable shields'

connections in all relevant connecting points such as station connections, jointing points

and earthing points. Dimensions of earthing cables shall be specified. Earthing points

shall be drawn in and lengths in m to earthing points shall be indicated. Any cross-

connection boxes and/or earthing boxes shall be drawn in and the cable shields’

connections and interconnections in them shall be clearly set out. For example, see

appendix 5.

2.4 Document list submarine cable In this technical guideline, submarine power cable refers to power cable which is

designed to be laid in water (lake, sea, river or equivalent) and, where appropriate, on

land close to the shore. Boundary for submarine cable is set at transition joints at the

shoreline. The transition joints belong to the submarine cable project.

SK Submarine cable Description


SK00 Contents SK00.01 Document list Complete list of all documents and other items included in

the documentation. Document name, revision no., issue/revision date shall be given.

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SK01 Technical descriptions SK01.01 Technical description cable


PDF_A

SK01.02 Technical description cable installation (”As built” Report)

The project’s/contractor’s description of the cable installation’s design. The description shall include how the submarine cables are laid, protective measures such as flushing, ploughing, covering etc., as well as descriptions of any crossing of obstacles.

PDF_A

SK01.03 Technical description DTS system The supplier’s overall description of structure and function of system supplied for measurement of the cable temperature, DTS system (if installed). The description shall set out functional principle, as well as how and where measurement/monitoring takes place, installation of measurement fibre etc.

PDF_A

SK02 Drawings SK02.01 Drawing list Complete list of drawings. Drawing number shall be


xls/xlsx

SK02.02 List of cancelled drawings in the Bank

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SK02.03 General plan cable route The drawing shall present an overview of the cable’s route and geographic location. See in addition description under section 2.5.

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SK02.04 Plan drawing & Profile drawing The drawing shall present the power cables surveyed in plan and profile. Height scale shall be shown. Any marking poles and warning signs shall be set out with surveyed positions.

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SK02.05 General plan for land/water intersection for location of transition joints

The drawing shall present an outline of the land/water intersection, as well as present design and arrangement of transition joint locations. See in addition under section 2.5

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SK02.06 Detailed drawings/Cross sections cable trench close to shoreline

The drawings shall show trench sections present, i.e. cross sections of the cables’ installation in any cable trench. See in addition under section 2.5

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SK02.07 Detailed drawings/Cross sections for laying underwater.

The drawings shall show normal cross sections of installation in areas close to the shoreline and at sea. See in addition description under section 2.5.

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SK02.08 Detailed drawings at intersections with other mains and submarine cables

The drawings shall show relevant cross sections of the cable installation at crossing points with other submarine mains/cables. See in addition description under section 2.5.

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SK02.09 Detailed drawing of location of transition joints

The detailed drawing shall present the joint location’s complete design in more detail than the general plan. See in addition under section 2.5

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SK02.10 Design drawings concrete Drawings which show design of any base plates at joint location, design of any concrete enclosures for junction boxes or concrete construction for ”Hang-off”.

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SK02.11 Detailed drawings cable joints This refers to the supplier’s/manufacturer’s detailed drawing of structure of transition joints and any submarine joints.

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SK02.12 Detailed drawings cable clamps This refers, where applicable, to the supplier’s//manufacturer’s detailed drawing of design of cable clamps supplied (can be used at transition joints).

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SK02.13 Detailed drawings junction boxes etc.


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SK02.14 Phase sequence diagram See description under section 2.5. PDF_A SK02.15 Earthing diagram See description under section 2.5. PDF_A

SK03 Situation documentation SK03.01 Coordinate lists and files The entire cable installation including vital parts such as

joint locations, concrete enclosures, connection chambers, fibre-optic chambers, pipe laying etc. shall be surveyed and presented according to Svk’s instructions, see TR08-06.

See TR08-

06

SK04 Technical specifications SK04.01 Technical specification power cable This refers to the supplier’s technical specification


PDF_A

SK04.02 Technical specification cable joints This refers to the supplier’s technical specification, partially in words, of the design of the cable joint supplied, data sheets which present electrical, thermal and mechanical data, as well as information about dimensions and weight for complete joint housing. Applies to both transition joints and submarine joints.

PDF_A

SK04.03 Technical specification cable termination

The supplier's data sheet and drawings for component supplied.

PDF_A

SK04.04 Technical specification ducting pipe The supplier’s data sheet and drawings for product supplied. (Where appropriate).

PDF_A

SK04.05 Technical specification hoses/pipes for communication cables


PDF_A

SK04.06 Technical specification fibre-optic chambers or any other chambers

The supplier’s data sheet/technical specification for chambers supplied

PDF_A

SK04.07 Technical specification fibre-optic cables


PDF_A

SK04.08 Technical specification cable current transformers

The supplier's data sheet and drawings for component supplied. (Where appropriate)

PDF_A

SK04.09 Technical specification junction boxes and earthing boxes


PDF_A

SK04.10 Technical specification cable ties, stripes or means of attachment for cable

The supplier’s data sheet/technical specification for product supplied. Here, means of attachment refers to any cable clamps or equivalent at joint locations.

PDF_A

SK04.11 Technical specification equipment for temperature monitoring (DTS)


PDF_A

SK04.12 Technical specification equipment for PD-measurement


PDF_A

SK04.13 Technical specifications equipment for laying submarine cable

The contractor’s/supplier’s technical specifications for cable laying vessel and other laying equipment such as ROVs, flushing equipment, ploughing equipment etc.

PDF_A

SK04.14 Technical specification equipment for locating faults

The supplier’s data sheet/technical specification for equipment supplied. Measurement performance etc. shall be specified. Shall be supplemented with a technical description

PDF_A

SK05 Material specifications



SK05.01 Material specification protective filling

The supplier’s data sheet/technical specification for thermal material supplied. Screening curve shall be presented.

PDF_A

SK05.02 Material specification filling material for pipe laying etc.

The supplier’s data sheet for bentonite mixture or equivalent supplied

PDF_A

SK05.03 List of materials (MSDS) The supplier’s summary of content declarations for relevant material included in cable and accessories. Primarily applies to insulating oils, any compound materials, plastics.

PDF_A

SK06 List of suppliers SK06.01 List of materials suppliers A list of qualified suppliers of critical material, such as

insulating oil, PEX-material, compound-material for joints etc.

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SK06.02 List of equipment suppliers A list of suppliers of accessories/equipment, such as SVLs, DTS systems etc.

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SK07 Photographs SK07.01 Photographic documentation of joint

locations Photographs shall document locations for transition joints. The photographs shall be taken when the joint location is completed technically, but before protective filling/backfilling takes place.

JPEG

SK07.02 Photographic documentation submarine cables

Relevant photographic documentation from submarine cable installation

JPEG

SK08 Earthing presentation SK08.01 Earthing description A comprehensive description of the earthing system’s


PDF_A

SK08.02 Earthing map Planimetric map in scale 1:2,000 of cable installation, earth wires and earth electrodes drawn in. (If relevant)

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SK08.03 Measuring protocol for step and touch voltages


PDF_A

SK09 Soil investigations SK09.01 Soil investigation records The results from any soil investigations performed in

connection with cable coming onto land shall be presented here. Relevant investigations are surveying soil types, stability, investigation of ground resistivity etc.

PDF_A

SK09.02 Records and reports from surveys and bottom surveys

Results shall be presented from surveys performed, bottom surveys, dredging, hydrographical surveys etc.

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SK09.03

Marine biology investigations PDF_A

SK09.04 marine biology investigations PDF_A

SK10 Calculations SK10.01 Capacity calculations The supplier’s calculation results for the expected thermal

fan out for cable systems supplied, under given/assumed conditions. Likewise, results from calculation of the cable system’s short-circuit resistance shall be presented.

PDF_A

SK10.02 Mechanical calculations Any mechanical calculations performed within the framework of the project shall be presented here. It might, for example, involve calculations for dimensioning ”Hang-off”.

PDF_A

SK10.03 Geotechnical calculations Any geotechnical calculations performed within the framework of the project shall be presented here. For example, it might involve stability calculations to ensure carrying capacity.

PDF_A

SK11 Measurements (not incl. in testing)



SK11.01 Measuring protocol ground resistivity

Provided that such measurements are performed, results of measurements of the ground’s thermal resistivity in [K•m/W] before excavating the cable trench are to be presented here

xls/xlsx, PDF_A

SK11.02 Measuring protocol compaction control

The results from measurements taken of degree of compaction in cable foundation and protective filling are to be presented here (Troxler-measurement or equivalent method) (If relevant).

xls/xlsx, PDF_A

SK11.03 Measuring protocol impedance measurement


xls/xlsx, PDF_A

SK11.04 Measuring protocol earth electrode measurements

In accordance with Svenska Kraftnät Excel template (modified for cable project).

xls/xlsx

SK12 Technical quality documentation SK12.01 Inspection record Records from surveys and inspections performed are to

be presented here. Relevant inspections are ongoing checks of work carried out, assembly work, as well as Final inspection, Operational inspection, Guarantee inspection.

xls/xlsx, PDF_A

SK12.02 Measuring protocol thermal protective filling

The supplier’s records showing that the thermal sand supplied meets the set requirements are to be presented here.

PDF_A

SK12.03 Measuring protocol bentonite filling The supplier’s records showing that the thermal filling supplied (bentonite) meets the requirements are to be presented here.

PDF_A

SK12.04 Records Type Test Records of type tests the supplier has performed on cable and all accessories included (cable joints) and components. Type test of complete cable systems shall be presented. Type testing of junction boxes and similar shall also be presented. The type test shall be performed according to Cigré Electra 171, Cigré Electra 189 and applicable IEC standard. For HVDC-cables testing shall be performed according to Cigré TB 496.

PDF_A

SK12.05 Records of Sample Test Records of sample tests performed by the supplier. According to applicable IEC standard. For HVDC-cables testing shall be performed according to Cigré TB 496.

PDF_A

SK12.06 Routine test Records of routine tests performed by the supplier. According to applicable IEC standard. For HVDC-cables testing shall be performed according to Cigré TB 496.

PDF_A

After Installation Tests SK12.07 Records of Sheath Tests (included


PDF_A

SK12.08 Records of Phase Sequence Tests Records of phase sequence tests the supplier has performed. According to customary standards.

PDF_A

Records of PD measurement Test records from PD measurements on all accessories fitted with PD sensors. If PD sensors are installed and performed according to the supplier’s standard.

PDF_A

SK12.10 Records Impedance measurement Test records from measurements performed by the supplier of plus-, minus- and zero-sequence impedance data.

PDF_A

SK12.11 Records of AC-test (Operational test)


PDF_A

SK12.12 Records TDR (Time Domain Reflectometry)

Records of TDR measurements performed by the supplier.

PDF_A

SK12.13 Record OTDR of fibre optic cables Test records from OTDR-measurement performed by the installation engineer. Damping measurements shall be presented.

PDF_A

SK12.14 ITP (inspection and test plan) Information test and quality control shall be implemented

PDF_A

SK12.15 NCR (non conformance report) Deviation reports, ISO9001 PDF_A

SK13 Maintenance document SK13.01 Maintenance manual Cable system The supplier’s specific advice and instructions for


PDF_A



SK13.02 Method description cable laying The installation engineer's/supplier’s method description, specific advice and instructions for laying and misc. handling of power cable supplied.

PDF_A

SK13.03 Method description cable splicing The supplier’s description as a basis for correct assembly of cable joints (spare parts) supplied

PDF_A

SK13.04 Method description fault localisation equipment

The supplier’s operational description for fault localisation equipment supplied.

PDF_A

SK13.05 Repair agreement Cable splicing A repair agreement shall be signed with the cable supplier to ensure rapid access to repair staff and resources in the event of a cable fault.

PDF_A

SK13.06 List of spares The supplier shall draw up a list of all spare parts (cable, joints etc.) which have been supplied. The document shall also include instructions for storage and handling of the spare parts, as well as information about the predicted useful service life. Information about where the spare parts are stored shall also be included in the list.

PDF_A

SK13.07 Operation and Maintenance Instruction for DTS system


PDF_A

SK13.08 Traceability documentation Records which detail which cable lengths (unique number) are installed where, ID no. of all joints, etc. installed shall be set out.

PDF_A

2.5 Explanations for document list submarine cable Explanations and clarifications of certain of the points in the document list according to


SK02.03 General plan cable route A general plan shall function as an overall document which clearly shows the cable

installation's route. The general plan shall refer to underlying drawings. The type and

number of the various underlying drawings shall be clearly set out on the general plan.

The general plan shall be according to scale and drawn up in such a way as to clearly set

out the cable connection’s geographic location. At abutments, any roads, buildings, etc.

in the vicinity of the cable route shall be shown. At sea, any intersections with other

infrastructure and similar shall be shown. If legibility requires it, the general plan shall

be divided into a number of drawings. See example in appendix 1. In addition the cable

route shall be entered onto the relevant nautical chart. For example, see appendix 6.

SK02.05 General plan land/water intersection and transition joints The drawing shall present an outline of the areas where submarine cables meet land, as

well as present design and arrangement of transition joint locations. The locations of the

joint housings shall be set out, as well as other equipment such as junction boxes, boxes

for PD measurement etc. Any concrete enclosures or chambers for these boxes shall also

be shown. If a concrete slab or equivalent has been placed in the jointing pit, this shall be

shown. Arrangement for mechanical casing (anchorage of the submarine cables’

reinforcement (so-called ”Hang-off”) shall be set out in the drawing.

SK02.06 Cross sections of installation close to shoreline Sectional drawings which show the cable trench's dimensions and the power cables’

positions in the excavated cable trench in catchment areas close to the shoreline and in

excavated trenches between shoreline and joint location for transition joints shall be

produced for the different installation configurations which arise. Sectional drawing

shall as a minimum show:

• Trench depth

• Trench bottom width

• Dimensions of protective filling (cable sand or equivalent)

• Depth of filling above the cables


• Location of cable protection and warning mesh or equivalent

• Type of backfill/cable sand

• Type of surrounding ground (moraine, earth, clay, sand, mud etc.)


• Any reinforced cable protection, for example concrete slabs or similar.

• Location of any earth wires.









surveying.

Sectional drawings for joint locations and intersections with another infrastructure are

dealt with separately. If installation in ducting pipes takes place in connection with

submarine cables meeting land, see the requirements for pipe laying under the section

on underground cable above.

SK02.07 Cross sections for submarine cable The cross sections shall show normal configurations for installation close to the shore

and for installation at sea. Sectional drawing for pipe laying shall as a minimum show:

• Laying depth in sea/lake bottom (if relevant)

• Location of any cable protection (including reinforced) and markings

• Type of backfill/cable sand and/or type of surrounding bottom material




as described under SK02-06 above.

SK02.08 Detailed drawings of intersections with other mains Specific sectional drawings shall be produced in points where the cable installation is

crossed by other mains, submarine cables or similar installations on the lake bed.

Sectional drawing of intersection with other mains and submarine cables shall, in

addition to the specification under SK02.06 or SK02.07 above, as a minimum also show:

• Position/location for intersecting mains/submarine cable/other

• Distance between power cables and intersecting infrastructure

• Type of mains, mains dimension and material. Where appropriate, voltage level.

Number of intersecting mains (if more than one).


as described under SK02-06 above. Drawings shall also be presented which show

detailed design of any bridge structures and similar to deal with intersections.

SK02.09 Detailed drawing of location of transition joints The detailed drawing shall, in addition to the specification for general plan according to

SK02.05, also present the power cables’ location, any cross-connection cables, earthing

cables, measurement cables, as well as earth wires/counterpoise wires. Location of any

PD sensors shall be shown. Individual cables shall be ID marked. Specific detailed

drawing shall be presented of arrangement for anchoring the submarine cables’

reinforcement (so-called Hang-off).

SK02.14 Phase sequence diagram A phase sequence diagram shall be presented, where the location of phases L1, L2 and L3

is clearly set out along the entire cable route. Any transposition points shall be clearly

shown, and the phases’ location before and after such transposition points shall be

presented. Linear measurement in m at each transposition point shall be given. With any

installation of submarine cables in triangle formation, the positioning of the phases

within the respective cable group shall be shown on the cross section. For example, see

appendix 4.

SK02.15 Earthing diagram A diagram of the cable system's earthing system shall be produced. The diagram shall

present earth wires/counterpoise wires, earth electrode, as well as cable shields'

connections in all relevant connecting points, jointing points and similar. Dimensions of

earthing cables shall be set out. Earthing points shall be drawn in and lengths in m to

earthing points shall be indicated. Any cross-connection boxes and/or earthing boxes

shall be drawn in and the cable shields’/reinforcement's connections and

interconnections in them shall be clearly set out. For example, see appendix 5.

2.6 Document list cable laid in tunnel In this technical guideline, power cables laid in tunnels refers to power cables laid in a

drilled or excavated tunnel below ground level. Cables laid in culverts or similar at

ground level are included under ground cable according to section 2.3 above. Cables laid

in tunnels also include cables that are laid in bridge structures or similar. The reason for

this is that installation/assembly of cables in bridges are most similar to installations in

tunnels.

Note that this document list only contains the documentation requirements related to

the power cable system including its accessories and peripheral equipment, as well as the

installation of the cable system including necessary assembly material (installation steel

etc.). Tunnel installations including associated supply system are to be documented

according to requirements in Svenska Kraftnät’s technical guideline for tunnelling (not

published at the time of writing).

TK Cables laid in tunnels Description


TK00 Contents TK00.01 Document list Complete list of all documents and other items included in

the documentation. Document name, revision no., issue/revision date shall be given.

xls/xlsx



TK01 Technical descriptions TK01.01 Technical description cable


PDF_A

TK01.02 Technical description cable installation.

Description of the installation's design. The description shall provide both a general and a more detailed account of how the installation system is designed and how the assembly/installation of the cable system is executed in the tunnel or bridge installation as a whole including any vertical shafts, or equivalent for bridges.

xls/xlsx, PDF_A

TK01.03 Technical description DTS system The supplier’s overall description of structure and function of system supplied for measurement of the cable temperature, DTS system (if installed). The description shall set out functional principle, as well as how and where measurement/monitoring takes place, installation of measurement fibre etc.

PDF_A

TK02 Drawings TK02.01 Drawing list Complete list of drawings. Drawing number shall be


xls/xlsx

TK02.02 List of cancelled drawings in the Bank

xls/xlsx

TK02.03 General plan cable route The drawing shall present an overview of the cable installation's, i.e. the tunnel's (or bridge's) route and geographic location. See in addition description under section 2.3.

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TK02.04 General plan cable installation The drawing shall present an overview of the surveyed cables’ locations in plan and profile in the tunnel or bridge system. See in addition description under section 2.7.

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TK02.05 General plan station installation The drawing shall show location of cable terminations within station area. The drawing (which can be a site plan of the station) shall show other vital parts of the station. Wiring connected to the power cables shall be shown.

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TK02.06 General plan joint location The drawing shall present the joint location’s design and arrangement. The drawing shall show the joint housings’ locations in plan and profile. See in addition under section 2.7.

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TK02.07 Detailed drawings/Cross sections of the cable installation

The drawings shall show the respective tunnel and bridge sections occurring, i.e. cross sections of the cables’ installation in tunnel or bridge spaces, both in the main tunnel/bridge section and, for example, in vertical shafts or bridge piers or similar. See in addition under section 2.7.

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TK02.08 Detailed drawings steel structures for cable installation

The drawings shall show in detail the steel structures (uprights, frames, brackets, rails, beams, fixings, cable clamps etc.) that are used for the power cables’ assembly in the respective space. See in addition description under section 2.7.

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TK02.09 Detailed drawings cable mountings The drawings shall show cable clamps, or equivalent suspension or mounting solutions.

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TK02.10 Assembly drawing of cable termination

The drawing shall show the cable termination fitted on its rack, as well as cable current transformers, junction boxes, PD-measuring boxes etc. and wiring and earthings. Location of PD-sensors shall be set out.

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TK02.11 Detailed drawing of joint location The detailed drawing shall present the joint location’s complete design in more detail than the general plan. See in addition under section 2.7.

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TK02.12 Design drawings steel at cable terminations

Design drawings for racks for cable terminations shall be presented, as well as design drawings for any assembly components for junction boxes etc. If adapters or similar are required for assembly of cable terminations on racks, design drawings for these shall also be presented.

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TK02.13 Design drawings steel for cable installations

Design drawings for steel components for power cable installations and mountings, such as brackets, frames, beams, rails, suspensions etc.

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TK02.14 Detailed drawings cable joints This refers to the supplier’s/manufacturer’s detailed drawing of the cable joint’s construction.

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TK02.15 Detailed drawings cable termination This refers to the supplier’s/manufacturer’s detailed drawing of the cable termination’s construction.

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TK02.16 Detailed drawings cable clamps This refers to the supplier’s/manufacturer’s detailed drawing of the design of cable clamps’ supplied.

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TK02.17 Detailed drawings junction boxes etc.


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TK02.18 Phase sequence diagram See description under section 2.7. PDF_A TK02.19 Earthing diagram See description under section 2.7. PDF_A

TK03 Situation documentation TK03.01 Coordinate lists and files The entire cable installation including vital parts such as

joint locations with joint housings, etc. shall be entered and presented according to Svk’s surveying instructions, see TR08-06

See TR08-

06

TK04 Technical specifications TK04.01 Technical specification power cable This refers to the supplier’s technical specification


PDF_A

TK04.02 Technical specification cable joints This refers to the supplier’s technical specification in words of the design of the cable joint supplied, as well as data sheets which present electrical, thermal and mechanical data, as well as information about dimensions and weight for complete joint housings.

PDF_A

TK04.03 Technical specification cable termination

This refers to the supplier’s technical specification in words of the design of the cable termination supplied, as well as data sheets which present electrical, thermal and mechanical data, as well as information about dimensions and weight for complete cable termination.

PDF_A

TK04.04 Technical specification hoses/pipes for communication cables


PDF_A

TK04.05 Technical specification fibre-optic chambers or any other chambers

The supplier’s data sheet/technical specification for fibre-optic cables supplied

PDF_A

TK04.06 Technical specification fibre-optic cables


PDF_A

TK04.07 Technical specification cable current transformers

The supplier's data sheet and drawings for component supplied

PDF_A

TK04.08 Technical specification junction boxes and earthing boxes


PDF_A

TK04.09 Technical specification cable clamps

The supplier’s data sheet/technical specification for cable clamps supplied (or equivalent component)

PDF_A

TK04.10 Technical specification cable ties, stripes or ratchet straps for cables

The supplier’s data sheet/technical specification for component supplied.

PDF_A

TK04.11 Technical specification equipment for temperature monitoring (DTS)


PDF_A

TK04.12 Technical specification equipment for PD-measurement


PDF_A

TK05 Material specifications TK05.01 List of materials (MSDS) The supplier’s summary of content declarations for

relevant material included in cable and accessories. Mainly concerns insulating oil, any compound material, plastics, but also, for example, fire sealing material in firewalls etc.

PDF_A

TK06 List of suppliers



TK06.01 List of materials suppliers A list of qualified suppliers of critical materials, such as insulating oil, PEX-material, compound material joints etc.

xls/xlsx, PDF_A

TK06.02 List of equipment suppliers A list of suppliers of accessories/equipment, such as SVLs, DTS systems etc.

xls/xlsx, PDF_A

TK07 Photographs TK07.01 Photographic documentation cable

installation Some representative photographs which show the cable installation should accompany the documentation. Examples of suitable locations to photograph are joint locations, typical tunnel/bridge sections, and firewalls etc.

JPEG

TK08 Earthing presentation TK08.01 Earthing description A comprehensive description of the earthing system’s


PDF_A

TK08.02 Earthing map Planimetric map in scale 1:2,000 of the cable installation, with earth wires and any earth electrodes drawn in.

DWG + PDF_A

TK08.03 Measuring protocol for step and touch voltages


PDF_A

TK09 Calculations TK09.01 Capacity calculations The supplier’s calculation results for the expected thermal

fan out for cable systems supplied, under given/assumed conditions. Likewise, results from calculation of the cable system’s short-circuit resistance shall be presented. Any calculations performed of air ventilation or thermal calculations linked to rock or tunnel spaces shall also be presented here.

PDF_A

TK09.02 Mechanical calculations Any mechanical calculations performed within the framework of the project shall be presented here. It might, for example, concern calculations of the steel structures that will support the cable system, or calculations due to modifications or additions to original designs.

PDF_A

TK10 Measurements (not incl. in testing) TK10.01 Measuring protocol sheath test after

cable laying The results from sheath tests performed in connection with laying power cables (not to be confused with sheath test included in SAT) are to be presented here.

xls/xlsx, PDF_A

TK10.02 Measuring protocol impedance measurement


xls/xlsx, PDF_A

TK11 Technical quality documentation TK11.01 Inspection record Records from surveys and inspections performed are to

be presented here. Relevant inspections are checking steel fitted for cable termination and cable mountings, checking after laying cable, assembly work, as well as Final inspection, Operational inspection, Guarantee inspection

xls/xlsx, PDF_A

TK11.02 Records Type Test Records of tests the supplier has performed on cable and all accessories included (cable joints and cable terminations). Type test of complete cable systems shall be presented. Type testing of junction boxes shall also be presented. The type test shall be performed according to applicable IEC standards.

PDF_A

TK11.03 Records of Sample Test Test records from sample tests performed by the supplier. According to applicable IEC standard

PDF_A

TK11.04 Routine test Records of routine tests performed by the supplier. According to applicable IEC standard

PDF_A

After Installation Tests TK11.05 Records of Sheath Tests (included


PDF_A



TK11.06 Records of Phase Sequence Tests Records of phase sequence tests the supplier has performed. According to customary standards.

PDF_A

TK11.07 Records of PD measurement Test records from PD measurements on all accessories fitted with PD sensors. If PD sensors are installed and performed according to the supplier’s standard.

PDF_A

TK11.08 Records Impedance measurement Test records from measurements performed by the supplier of plus-, minus- and zero-sequence impedance data.

PDF_A

TK11.09 Records of AC-test (Operational test)


PDF_A

TK11.10 Records TDR (Time Domain Reflectometry)

Where appropriate: Records of TDR measurements performed by the supplier.

PDF_A

TK11.11 ITP (inspection and test plan) Information test and quality control shall be implemented

PDF_A

TK12.12 NCR (non conformance report) Deviation reports, ISO9001 PDF_A

TK12 Maintenance document TK12.01 Maintenance manual Cable system The supplier’s specific advice and instructions for


PDF_A

TK12.02 Instructions cable laying The supplier’s specific advice and instructions for cable laying and handling of power cable supplied.

PDF_A

TK12.03 Method description cable splicing The supplier’s description as a basis for correct assembly of cable joints (spare parts) supplied

PDF_A

TK12.04 Method description Assembly of cable terminations

The supplier’s description as a basis for correct assembly of cable terminations (spare parts) supplied.

PDF_A

TK12.05 Repair agreement Cable splicing A repair agreement shall be signed with the cable supplier to ensure rapid access to repair staff and resources in the event of a cable fault.

PDF_A

TK12.06 List of spares The supplier shall compile a list of all spare parts (cable, joints, end parts etc.) which have been supplied. The document shall also include instructions for storage and handling of the spare parts, as well as information about the predicted useful service life.

PDF_A

TK12.07 Operation and Maintenance Instruction for DTS system


PDF_A

TK12.08 Traceability documentation Protocol presenting which cable lengths (unique number) are installed where, ID no. of all joints, cable terminations, etc. installed shall be set out.

PDF_A

2.7 Explanations for document list cable laid in tunnel Explanations and clarifications of certain of the points in the document list according to


TK02.03 General plan cable route A general plan shall function as an overall document which shows an overview of the

tunnel installation's geographic route. The general plan shall refer to underlying

drawings, e.g. drawings of tunnel or bridge sections and drawings in connection to

vertical shaft etc. The type and number of the various underlying drawings shall be

clearly set out on the general plan. The general plan shall be according to scale and

drawn up in such a way as to clearly set out the cable connection’s geographic location. If

legibility requires it, the general plan shall be divided into a number of drawings. Supply

tunnel's routes are often classified as more or less secret. How general plans of them

should be dealt with must therefore be agreed with the project management in each

individual project. For example, see appendix 7.

TK02.04 General plan cable installation The general plan shall cover the entire tunnel or bridge system including vertical shaft or

equivalent (for bridge, e.g. bridge pier). If legibility requires it, the general plan shall be

divided into a number of drawings. The drawing does not need to present details that do

not affect the actual power cable installation, however, the tunnel/bridge space's

dimensions shall be shown, steel structures for the cables’ mountings, the cables’

locations, cable clamps in the main tunnel/bridge section and shaft/upright where the

cables are laid shall be set out in the drawing.

TK02.06 General plan joint location The drawing shall present the joint location’s design and arrangement. Joint housing's

locations shall be shown (plan and profile), as well as other equipment such as any

junction boxes, boxes for PD-measurement etc. Cable ladders, brackets and similar shall

be shown, as well as (in outline) any fixings the joint housings might have and similar for

the steel.

TK02.07 Cross sections for tunnel or bridge installations Sectional drawings which show detailed cross sections of tunnel or bridge spaces shall be

produced for the different tunnel/bridge sections and installation configurations which

occur along the cable route. Including laying in trench, bridge pier or equivalent.

Sectional drawing shall as a minimum show:

• Tunnel/bridge space's dimensions

• For tunnel: Design of floor/ground (material)

• Any drainage pipe and similar

• Any concrete trough or equivalent for control cables

• Steel structures, brackets (or equivalent), cable mountings


• Joint housings and any junction boxes and similar (Applies at joint locations)

• Any other mains installations, cable ladders etc. in addition to the power cables

• Any firewalls or other walls incl. cable bushings (detailed)










surveying.

Breakpoint for production of new sectional drawing is when there is a significant change

in the particular cross section, e.g.:

• Tunnel/bridge space's dimensions are significantly changed

• Start/end of joint location

• Firewall, other wall or similar

• The power cables’ locations are changed (more than marginally)

• Any other mains installations' locations are significantly changed

• Any other installations are added or taken away. (Other installations can be, for

example, distribution boxes, constructions to protect the power cables etc.)

TK02.08 Cross sections for pipe laying In, for example, vertical shafts for tunnels, where a part of a larger steel structure is used

for the power cables’ installation, the entire steel structure does not need to be presented

in these drawings. It is sufficient if relevant parts are presented, so that the power cables’

mountings and locations in the resp. space are clearly shown.

TK02.11 Detailed drawing joint location In addition to what is specified for general plan according to TK02.06, the detailed

drawing shall also present the power cables’ locations, any cross-connection cables,

earthing cables, measurement cables, as well as earth wires/counterpoise wires. Location

of any PD sensors shall be shown. Individual cables shall be ID marked.

TK02.18 Phase sequence diagram A phase sequence diagram shall be presented, where the location of phases L1, L2 and L3

is clearly set out along the entire cable route from station to station, through all tunnel

and bridge sections resp., and past joint locations. Any transposition points shall be

clearly shown, and the phases’ location before and after such transposition points shall

be presented. Linear measurement in m at each transposition point shall be given. The

phases’ positions within the respective cable group shall be shown in the cross section.

For example, see appendix 4.

TK02.19 Earthing diagram A diagram of the cable system's earthing system shall be produced. The diagram shall

present earth wires/counterpoise wires, any earth electrodes, as well as the cable shields'

connections in all relevant connecting points such as station connections, jointing points

and earthing points. Dimensions of earthing cables shall be specified. Earthing points

shall be drawn in and lengths in m to earthing points shall be indicated. Any cross-

connection boxes and/or earthing boxes shall be drawn in and the cable shields’

connections and interconnections in them shall be clearly set out. For example, see

appendix 5.

Appendices – Sample drawings TR08-05 Appendix 1 – General plan cable route

TR08-05 Appendix 2 – Trench section drawing with pipe

TR08-05 Appendix 3 – Shaft section drawing without pipe

TR08-05 Appendix 4 – Phase sequence diagram

TR08-05 Appendix 5 – Earthing diagram

TR08-05 Appendix 6 – General plan submarine cable route

TR08-05 Appendix 7 Geological survey in tunnel