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Report Technology

Title: TECHNICAL EVALUATION CRITEIA FOR MANUFACTURING, SUPPLYING, LAYING, JOINTING AND TERMINATING OF HIGH VOLTAGE CABLES

Unique Identifier: 240-

Alternative Reference Number: <n/a>

Area of Applicability: Engineering

Documentation Type: Report

Revision: 1

Total Pages: Error: Reference source not found

Next Review Date: n/a

Disclosure Classification: Confidential

Compiled by Functional Responsibility Authorized by

Saini SandeEngineer (GOU SI)

Thinus du PlessisChief Engineer (HV Plant Engineering)

Stephen NkwaneSenior Manager (GOU SI)

Date: Date: Date:

PCM Reference: 240-53459006SCOT Study Committee Number/Name: Cable systems and Metal enclosed switchgear

Document Classification: Confidential

TECHNICAL EVALUATION CRITEIA FOR MANUFACTURING, SUPPLYING, LAYING, JOINTING AND TERMINATING OF HIGH VOLTAGE CABLES


Revision: 1

Page: 2 of Error: Reference

ContentPage

1. INTRODUCTION....................................................................................................................................... 3

2. SUPPORTING CLAUSES......................................................................................................................... 32.1 SCOPE............................................................................................................................................. 3

2.1.2 Purpose................................................................................................................................ 32.1.3 Applicability.......................................................................................................................... 3

2.2 NORMATIVE/INFORMATIVE REFERENCES.................................................................................32.2.1 Normative............................................................................................................................. 32.2.2 Informative............................................................................................................................ 3

2.3 DEFINITIONS................................................................................................................................... 42.3.1 General................................................................................................................................. 42.3.2 Disclosure Classification.......................................................................................................4

ABBREVIATIONS...................................................................................................................................... 42.5 ROLES AND RESPONSIBILITIES...................................................................................................42.6 PROCESS FOR MONITORING.......................................................................................................52.8 RELATED/SUPPORTING DOCUMENTS........................................................................................5

3. THE HV CABLE SYSTEMS REQUIREMENTS.........................................................................................5

4. CONCLUSIONS AND RECOMMENDATIONS..........................................................................................5

5. AUTHORISATION..................................................................................................................................... 5

6. REVISIONS............................................................................................................................................... 5

7. DEVELOPMENT TEAM............................................................................................................................. 6

8. ACKNOWLEDGEMENTS.......................................................................................................................... 6

Annex A – Schedules A and B in accordance with NRS 077 for the HV cable systems..................................7

Annex B – Technical evaluation criteria for the HV cable systems projects....................................................15

Annex C – Technical evaluation criteria for HV cable systems projects – Gatekeeper level 1 (Mandatory requirements)........................................................................................................................................... 17

Annex D – Technical evaluation criteria for the HV cable systems projects – Gatekeeper level 2 (Additional scoring requirements)............................................................................................................20

Figures

Tables

Table C.1: Level 1 gatekeeper technical evaluation criteria............................................................................56

Table D.1: 2: Level 2 technical evaluation criteria score.................................................................................59

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Revision: 1Page: 3 of Error: Reference

1. INTRODUCTIONThis document was compiled to provide the technical requirements for the supplying, laying jointing and terminating of high voltage cable systems in GOU.

2. SUPPORTING CLAUSES

2.1 SCOPE

2.1.1 The Group Technology SI Gauteng Operating Unit was requested to provide the technical requirements for the HV cable systems.

2.1.2 Purpose

This document was compiled to provide technical evaluation criteria to ensure electrical manufacturer and contractor compliance to standard HV cable system requirements within Eskom Holdings SOC (Ltd). It is applicable only for the purpose of performing evaluations to enquiry submissions for HV cable system electrical scope of works.

2.1.3 Applicability

This document shall apply to the HV cable systems partial replacement, extension and new cable systems projects.

2.2 NORMATIVE/INFORMATIVE REFERENCES

Parties using this document shall apply the most recent edition of the documents listed in the following paragraphs. Where any conflicting requirements exist, the requirements of this project specific technical requirements document shall apply.

2.2.1 Normative

[1] ISO 9001 Quality Management Systems.

[2] SANS 60840 Power cables with extruded insulation and their accessories for rated voltages above 30 kV (Um = 36 kV) up to 150 kV (Um = 170 kV) — Test methods and requirements

[3] NRS 077 XLPE-insulated cables and accessories for systems with nominal voltages of 44 kV, 66 kV, 88 kV and 132 kV

[4] DST 34-1177 General Information and requirements for high-voltage cable systems

[5] 240-56030625 Specification for XLPE-insulated power cables and accessories for systems with nominal voltages of 44kV to 132 kV

[6] D-WC 7545-11-02 substation layout and cable system drawing

[7] IEC 60141-1 Tests on oil-filled and gas pressure cables and their accessories - Oil-filled, paper-insulated, metal sheathed cables and accessories for alternating voltages up to and including 400kV

These documents are indispensable for the application of this document, i.e. documents to be used together with this document.

2.2.2 Informative

[8] 32-9: Definition of Eskom documents.

[9] 32-644: Eskom documentation management standard.

[10] 474-65: Operating manual of the Steering Committee of Technologies (SCOT).






Revision: 1

Page: 4 of Error: Reference 2.3 DEFINITIONS

2.3.1 General

Definition Description

Cable system Cable and all related accessories (i.e. joints if applicable, terminations, earthing and bonding system)

2.3.2 Disclosure Classification

2.4 Controlled disclosure: controlled disclosure to external parties (either enforced by law, or discretionary).

ABBREVIATIONS

Abbreviation Description

Al Aluminium

COE Centre of excellence

Cu Copper

DTS Distribute Temperature Sensing

ECC Earth Continuity Conductor

HV High voltage

OEM Original equipment Manufacturer

PD Partial discharge

PDE Power Delivery Engineering

QIP Quality Inspection Plan

QITP Quality Inspection Test Plan

SI Standards Implementation

SVL Surge Voltage Limiter

TBA To be announced

GOU Gauteng Operating Unit

XLPE Cross Linked Polyethylene

2.5 ROLES AND RESPONSIBILITIES

All Eskom employees and/or appointed bodies involved in the procurement process of the HV cable systems shall ensure that the project deliverable meets the requirements of this specification. Any deviation from these requirements shall constitute non-conformance, unless it was in advance approved by a delegated Group Technology HV Plant Cable Systems, Group Technology GOU SI, and GOU Cable systems specialists. The roles and responsibilities for the tender evaluation, contract negotiations, contract award and contract execution phase shall be as stipulated in the clause 2.6 of this document (Process for monitoring).







All manufacturers, suppliers and installation contractors of the HV cable systems to Eskom must be conversant with the requirements of this document, and shall comply with the requirements. No deviations will be accepted and suppliers shall ensure that they obtain clarity where required, and obtain all supporting information, OEM approvals or documents necessary to comply with this document.

2.6 PROCESS FOR MONITORING

2.7 The appointment of contractors shall be based on the evaluation outcome of the fully compliant documentation submission and evaluation of contractors’ site and premises to verify the contractor’s skill base, experience, tools, plant and equipment.

2.8 RELATED/SUPPORTING DOCUMENTS

Refer to clause/ section 2.2.

3. THE HV CABLE SYSTEMS REQUIREMENTS The HV cable systems: design; bill of quantities; design review; manufacturing; factory component sample and routine testing; factory system sample acceptance testing; supply; shipping; transportation; spares; and; installation and complete installation methodology (from cable termination end to cable termination end or from cable termination end to cable joint); installation quality controls and quality inspections; equipment interfacing, planning and execution; project timeline compliance and execution; after installation and commissioning testing; operational manual, maintenance manual; training; and distributed temperature sensing system for each individual system shall be performed in accordance with the requirements of this document, DST 34-1177, NRS 077 and SANS 60840.

Where any conflicting information is stated, this document will take precedence

4. CONCLUSIONS AND RECOMMENDATIONSThis report is effective to provide the project specific technical requirements for HV cable systems refurbishment projects. The cable system supplier and installation company shall complete the technical schedule B as part of the tender returnables.

The technical evaluation criteria for the project are specified in Annex B, C, and D.

5. AUTHORISATIONThis document has been seen and accepted by:

Name and surname Designation

Stephen Nkwane Manager – SI GOU

Thinus du Plessis Chief Engineer - Cable Systems

Queeneth Khumalo Chief Engineer - Cable Systems

Saini Sande Engineer - Cable Systems

Sandisiwe Mtshaulana Engineer - Cable Systems

6. REVISIONS

Date Rev Compiler Remarks

August 2017 1 S. Sande New Document







7. DEVELOPMENT TEAMThe following people were involved in the development of this document:

Saini Sande Engineer, SI GOU

Sandisiwe Mtshaulana Engineer, SI GOU

8. ACKNOWLEDGEMENTS







Annex A000 – Schedules A and B in accordance with NRS 077 for the HV cable systems Schedule A: Purchaser's specific requirements

Schedule B: Guarantees and particulars of equipment to be supplied (to be completed by tenderer)

Item

Sub clause

in NRS077

Description Schedule A Schedule B

B.1 4.1 a) altitude M Up to 1000m ________

b) ambient air temperature C –5 C to 50 C (average of 30 C and 40 C)

________

c) soil temperature C 0 C to 35 C (average of 25 C and 30 C)

________

d) soil thermal resistivity (minimum requirement for imported soil)

K∙m/W 1,2 ________

e) depth of burial M 1,2 ________

f) configuration Option 1&3 Flat (Min 2D spacing)Option 2&4 Tre-foil

________

________

g) Special bonding applied (i.e. end-point, double end-point or cross-bonded)?

Yes, single end point bonded

________

h) lightning ground flash density low (2 flashes/km2/year)

________

i) solar radiation W/m2 1 000 to 1 250 ________

j) ultraviolet radiation High ________

k) relative humidity 10 % to 95 %; ________

m) wind pressure and seismic not exceeding 700 Pa (equivalent to 40 m/s)and 0.3g

________

n) pollution severity defined by IEC 60815:"Very heavy"

Very heavy (31 mm/KV

________

o) maximum conductor operating temperature

C 70 (48 MVA) ________

B.2 4.2.2 Cable or accessory operating voltage (or both)

kV Xxxxxxxx ________

4.2.3 Rated voltage of accessories Xxxxxxxx ________

B.3 4.3.1.2 Conductor cross-sectional area and Load current (@ 70oC)(100 % load factor; thermally independent circuit)

mm2A

See clause 3.1 w) 420 A (48 MVA)

________________







110% for 4 hours120% for 2 hours130% for 1 hour90oC continuous105oC rating and for what duration

________________________________________

4.3.1.3 Symmetrical short-circuit fault level kA 40 ________

4.3.1.3 Fault level duration (if not 1s) S 1 ________

4.3.1.4 Type of conductor required Xxxxxxxx ________

________

4.3.3.2 Nominal thickness of insulation Mm Xxxxxxxx ________

4.3.3.2 Actual conductor screen radial stress at U0

kV/mm Xxxxxxxx ________

4.3.3.2 Actual core screen radial stress at U0

kV/mm Xxxxxxxx ________

4.3.6.1 Metallic sheath:seamless corrugated aluminium or copper wire screen

Seamless corrugated aluminium

________

4.3.6.2.2 Earth fault level kA 40 ________

4.3.6.3.2 Fault level duration (if not 1s) S 1 ________

4.3.6.2.3 Nominal thickness of aluminium sheath

Mm Xxxxxxxx ________

4.3.7.2 Details of water barriers Xxxxxxxx ________

4.3.8.5 Conductive coating applied Graphite or alternative--------------

B.4 4.4.1.1 Details/Drawing of the cable Xxxxxxxx ________

Size of conductor mm2 Xxxxxxxx ________

4.4.1.1(f) Bonding lead lug fixing hole if not M12

mm2 M12 ________

4.4.1.1(f) Type of bonding lead (single core/concentric)

Single core ________

4.4.1.1(f) Diameter of bonding lead Mm Xxxxxxx ________

4.4.1.1(g) Additional requirements Al conductor, Flat & Tre-foil options

________

4.4.1.2 Required type and number joints for ________

a) XLPE straight joints 6 Spares per conductor type offered on combined project total

________

b) Where applicable - 0234590:JOINT KIT 3C 66kV 300 OF-1C500

Xxxxxxxx + 1 spare ________







XLPE D2871

4.4.1.3 Details of joints offered. Joints shall also be offered with an additional option for a two piece coffin box design, which include bottom and top pieces. The joint stress cone shall be able to be fitted with the tools that shall be supplied and provided to Eskom as part of this tender. Preference shall be for fitting the stress cone with a pulling method.

Xxxxxxxx ________

4.4.1.4 Specialized tools required for jointing. Suppliers to provide the all the tools required to Eskom to perform the cable stripping and preparation, semi-con removal, insulation preparation, the conductor jointing, the stress cone fitting, CSA earthing re-instatement, etc.

Xxxxxxxx ________

4.4.1.5 Specify method used to connect the conductors

Xxxxxxxx ________

4.4.2.1 Details of the cable to be terminated

Xxxxxxxx ________

4.4.2.1 Size of conductor to be terminated mm2 Xxxxxxxx ________

4.4.2.2 Details of cable end support structure

DDT5271 & DDT5272 ________

4.4.2.3 Pollution Application ("very heavy") Very heavy (31 mm/KV)

________

4.4.2.4 OR 4.4.2.7

Insulator material type Composite ________

4.4.2.8 Insulator material offered Xxxxxxxx ________

4.4.2.8 Measured creepage distance Mm 31 mm/KV ________

4.4.2.9 OR 4.4.2.8 OR 4.4.3.3

Bonding lead lug fixing hole if not M12

M12 ________

4.4.2.11 OR 4.4.2.8 OR 4.4.3.3

Bonding lead cross-sectional area for termination

mm2 Xxxxxxxx ________

4.4.2.12 Diameter of vertical stem for self-supporting type terminations

Mm To be provided for the rated system fault level and current rating

________







4.4.2.13 Details of current-carrying connector for non-self-supporting type terminations

N/A Xxxxxxxx

4.4.2.14 Required number of GIS terminations

N/A Xxxxxxxx

4.4.2.14 Required number of Outdoor terminations

Xxxxxxxx plus 3 spare per cable type offered

________

4.4.2.15 Details of terminations offered Xxxxxxxx ________

4.4.2.16 Specialized tools required for terminating

Xxxxxxxx ________

4.4.2.17 Mounting PCD for self-supporting termination

450 mm ________

4.4.3.1 Materials required for SF6/oil termination

Xxxxxxxx ________

4.4.4.1 Sheath bonding arrangement required for either a) single end-point bonded system, orb) cross-bonded system, orord) combinations of the above

Any ECC conductor specified to be used outside the substation shall be insulated and rated to withstand the calculated high frequency and power frequency over voltages.Any link disconnecting box design and connection methods for installations outside the substation shall be designed to ensure no power frequency current return to the joint bay earth and link disconnecting box equipotential earth.

Xxxxxxxx ________

4.4.4.1(c) Number of major sections if cross-bonded

Xxxxxxxx ________

4.4.4.2 Type and number of link disconnecting boxes required for

a) one-way (i.e. 1 line and 1 earth), Xxxxxxxx ________

b) one-way with SVL surge arresters (i.e. 1 line onto SVL arrester and 1 earth),

Xxxxxxxx ________

c) three-way (i.e. 3 line and 1 earth),

Xxxxxxxx ________

d) six-way (i.e. 6 line and 1 earth), Xxxxxxxx ________







e) three-way with SVL surge arresters (i.e. 3 line onto SVL arresters and 1 earth),

Xxxxxxxx ________

f) six-way cross-bonded with SVL surge arresters (i.e. 6 line cross-bonded onto SVL arresters and 1 earth).

Xxxxxxxx ________

g) six-way with 6 SVL surge arresters (i.e. 6 line onto SVL arresters and 1 earth)

Xxxxxxxx ________

h) six-way with 3 SVL surge arresters (i.e. 6 line with 3 line onto SVL arresters and 3 line and 1 earth)

Xxxxxxxx ________

4.4.4.3 Type of link boxes required Kiosk or structure ________

4.4.4.3 Material of link boxes Stainless steel + DSP 34-1658 compliant coating method

________

4.4.4.3 Suitability for mounting in a manhole

N/A xxxxxxxx

4.4.4.6 Details of link boxes offered Xxxxxxxx ________

4.4.4.7 Maximum TOV that the SVL surge arresters will be subjected to

Xxxxxxxx ________

4.4.4.8 Details of SVL surge arresters offered

Xxxxxxxx ________

4.4.4.9 Link disconnecting boxes material Stainless steel + DSP 34-1658 compliant coating method

________

4.4.5.2 Bonding lead design parameters To be provided ________

4.4.5.3 Bonding lead cross-sectional area offered

mm2 Xxxxxxxx ________

4.4.5.4 Required length of bonding leads

a) the single-core bonding lead M Xxxxxxxx ________

b) the concentric bonding lead M Xxxxxxxx ________

4.4.5.5 Thickness of bonding lead insulation:

a) single-core Mm Xxxxxxxx ________

b) concentric inner Mm Xxxxxxxx ________

c) concentric outer Mm Xxxxxxxx ________

4.4.5.5 Overall diameter Xxxxxxxx ________

B.5 6.2.1 Length of cable required per drum M Xxxxxxxx ________

6.2.1 Number of drums required Xxxxxxxx Xxxxxxxx

6.2.3 Details of cable to be stored 1 combined project full spare length drum per

Xxxxxxxx







cable conductor size and type offered, with all cut off pieces drums

6.2.3 Drum material and corrosion protection

Must be sealed and corrosion resistant

________

6.2.5 Details of pulling eye offered Xxxxxxxx ________

6.2.5 Maximum permissible pulling tension

kN Xxxxxxxx ________

6.2.6 Cable drum material Xxxxxxxx ________

7.1.1 Additional information required:

a) rated voltage kV Xxxxxxxx ________

b) nominal diameter of conductor Mm Xxxxxxxx ________

c) nominal thickness of conductor screen


d) nominal thickness of core screen


e) nominal overall diameter of cable


f) mass of cable kg/m Xxxxxxxx ________

g) d.c. resistance of conductor at 20 oC

/km Xxxxxxxx ________

h) a.c. resistance of conductor at 70 oC


i) a.c. resistance of sheath with conductor at 70 oC


h) a.c. resistance of conductor at 90 oC


i) a.c. resistance of sheath with conductor at 90 oC


j) reactance per phase /km Xxxxxxxx ________

k) capacitance per phase nF/km Xxxxxxxx ________

l) zero sequence impedance /km Xxxxxxxx ________

m) zero sequence capacitance nF/km Xxxxxxxx ________

n) rated continuous current A Xxxxxxxx ________

o) rated symmetrical fault withstand current

kA·s Xxxxxxxx ________

p) rated earth fault withstand current

kA·s Xxxxxxxx ________

q) conductor temperature at specified load

oC Xxxxxxxx ________

r) conductor temperature after symmetrical fault (1 s) assuming








operation at specified load prior to fault

s) sheath temperature after earth fault(1 s ) assuming operation at specified load prior to fault


t) conductor losses at maximum conductor operating temperature

kW/km Xxxxxxxx ________

u) type test reports for the cables offered or for similar cables previously tested

Xxxxxxxx ________

v) dimensioned drawing of the cable cross-section

Xxxxxxxx ________

w) minimum installation bending radius

M Xxxxxxxx ________

x) emergency current rating (IEC 60853-2)

A Xxxxxxxx ________

y) cyclic current rating in accordance with IEC 60853-2

A Xxxxxxxx ________

z) Load profile 100% continuous, 110% 4 hours, 120% 2 hours and 130% 1 hours

xxxxxxxx


a) dimensioned drawing of joints offered

Xxxxxxxx ________

b) MCOV characteristic curves Xxxxxxxx ________

c) installation instruction for joints offered

Xxxxxxxx ________

d) type test reports for joints offered

Xxxxxxxx ________

e) details of training offered for jointing

Xxxxxxxx ________


a) dimensioned drawing of terminations offered

Xxxxxxxx ________

c) installation instruction for terminations offered

Xxxxxxxx ________

d) type test reports for terminations offered or similar terminations

Xxxxxxxx ________

e) details of training offered for terminations

Xxxxxxxx ________

7.1.2 Dimensioned drawings of link disconnecting boxes offered

Xxxxxxxx ________







7.1.2 Special tools required Xxxxxxxx ________

7.1.3 Accessory information indicated on drawings supplied with tender documentation

Yes Xxxxxxxx







Annex B000 – Technical evaluation criteria for the HV cable systems projects

1) Scope

This document provides the criteria for the evaluation of all the HV substation cable system projects to install the HV cable systems within Eskom Holdings SOC (Ltd). The document addresses the standard documented technical evaluation criteria to be used when evaluating the tender submissions for the HV cable system projects in line with the Eskom Holdings SOC (Ltd) requirements and it is applicable to all the technical evaluations for the related tender submissions.

2) Requirements

The technical evaluation criteria are specific for each part of the HV cable systems design; bill of quantities; design review; manufacturing; factory component sample and routine testing; factory system sample acceptance testing; supply; shipping; transportation; spares; installation and complete installation methodology (from cable termination end to cable termination end or from cable termination end to cable joint); installation quality controls and quality inspections; equipment interfacing, planning and execution; project timeline compliance and execution; after installation and commissioning testing; operational manual, maintenance manual; training; and distributed temperature sensing system. The evaluation methodology will include two main parts, namely the documentation evaluation and the factory assessment for the cable system and all related accessories offered.

2.1 Documentation EvaluationThe evaluation exercise is performed by the appointed Eskom technical team. This initial part of the evaluation starts when submissions are opened and assessed for the first time. The submitted documents will be evaluated against the evaluation criteria as stated in this document.

During the evaluation; fully compliant type tested HV cable systems in accordance with IEC/SANS 60840 will be required. Failure to submit and comply with the type test and pre-qualified requirements specified in these documents will lead to immediate disqualification.

The evaluations are meant for establishing if all the key tender deliverables are met. The documentation evaluation will consist of two sections: mandatory technical evaluation requirements deliverables (Level 1: mandatory gate-keeper), and scoring phase (level 2: submission requirements). The Level 1 mandatory gate keeper requirements constitute a total of 80% of the total technical evaluation score, while the level 2: submission requirements constitute 20% of the technical evaluation score.

The tender submission must meet all the level 1 mandatory gate-keeper requirements. Failure to meet all the mandatory requirements will result to a score of 0% of the 80% (listed above); thus a tenderer can only obtain 0%, or 80% and nothing in between for level 1 mandatory gate-keeper requirements. Equation 1 below shows how the technical evaluation score will be calculated.

Technical evaluation score = 80% (level 1 mandatory gate-keeper requirements) + 20% (level 2 submission requirements) (1)

Any technical evaluation score below 100% for level 2 requirements will need to be addressed as part of possible contract award technical negotiations.

2.2 Evaluation at factoryThe factory evaluations are only performed on the submissions that have met all the mandatory technical evaluation requirements as stated in Annex C. Eskom Commercial shall make the arrangements for factory visits and ensure the technical representatives are invited on time.

At the factory, the Eskom evaluating representative(s) conducts the evaluation through the use of checklists. The checklists are used to verify factory capability and manufacturing method compliance to the type tested and pre-qualification tested cable system offered.






Revision: 1

Page: 16 of Error: ReferenceThe factory evaluation will consists of the cable manufacturing plant evaluation (i.e design capability, type tested compounds and extrusion lines, manufacturing plant, processes, sample and routine testing, etc) and the cable accessories manufacturing plant evaluation (i.e. design capability, type tested compounds and manufacturing equipment, manufacturing plant, processes, sample and routine testing, etc).

The following areas shall be assessed during the manufacturing evaluation:

a) Machinery capability.

b) Plant setup.

c) Raw material and compounds type tested.

d) Extrusion lines type tested.

e) Production process and critical check points.

f) Design and software design capability.

g) Material handling and storage.

h) Testing facilities including certification and calibration of testing equipment.

i) Sample testing.

j) Routine testing procedures.

k) Packaging of materials.

At the end of this exercise, the Eskom evaluating representative(s) list all the deviations, if any. The representative conducts a formal discussion of the deviations in line with Eskom’s requirements. If major discrepancies are identified the supplier may be disqualified. For minor discrepancies, the Tenderer and their OEM are given opportunity to decide whether they agree or disagree to meet Eskom requirements upon possible contract award. The action plans for resolving the discrepancies will be agreed between Eskom representative(s) and the supplier.






Revision: 1

Page: 17 of Error: ReferenceAnnex C000 – Technical evaluation criteria for HV cable systems projects –

Gatekeeper level 1 (Mandatory requirements)

Table F.1: Level 1 gatekeeper technical evaluation criteria

Cable systems technical evaluation criteria for the documentation exercise

Level 1 Gatekeeper

TASK / MEASURE

CriteriaClause 3 of

this document

Acceptance: Yes/ No

Are English copies of the cable system type test reports in accordance with SANS/IEC60840 submitted? 3

Written confirmation and proof that: The installation of the cable system terminations and/or joints will be performed and supervised by cable termination and joint OEM authorised cable jointers that are employed by the cable termination and joint OEM?; The design, manufacture, supply and installation history since year 2011 of at least 2 projects where HV XLPE Cable systems for the same conductor sizes offered or bigger were supplied and installed?; and That all parts of the cable system installation will be overseen by an OEM employed site supervisor?ORWritten confirmation and proof that: The installation of the cable system terminations and/or joints will be performed by cable termination and joint OEM qualified and authorised cable jointers for the offered conductor size and voltage rating, but that may not be employed by the cable termination and joint OEM; but will be supervised by the cable termination and joint OEM for conductor sizes bigger than 1000mm2?; The design, manufacture, supply and installation history since year 2011 of at least 2 projects where the HV voltage XLPE Cable systems for the same conductor sizes offered or bigger were supplied and installed?; and That all parts of the cable system installation will be overseen by an OEM employed site supervisor?

The above required project references shall indicate the project name, customer name, customer contact details, the operating voltage, conductor size, year of execution, quantity (total length of cable and number of accessories). Contact details of the utility/customer representatives, their titles, addresses, emails and telephone numbers should be provided.Proof of training and CV’s need to be submitted where applicable for all intended jointing and/or termination work. Letters of OEM commitment and understanding of site supervision shall be included in the tender submission and incorporated in the bill of quantities and detail project plan.

3

A brief overview of the manufacturing processes employed in the production facilities. Only HV cable produced using the following production processes will be accepted: True triple head extrusion in a Continuous Vulcanising (CV) line, Dry curing extrusion, In-production quality monitoring systems employed to monitor curing and scorching characteristics of XLPE compound as well as insulation and screen thickness, and Clean room facility complying to at least Class 1000.

3

Letter indicating location and physical address of manufacturing facility which will be used to manufacture and supply for Eskom requirements. Eskom will only evaluate these facilities and they will be the only qualifying facilities from which the Supplier will supply?

3

Letter of consent for Eskom representative(s) to carry out factory evaluations, in process inspections, witnessing of routine tests, sample tests and factory acceptance testing.

3






Revision: 1

Page: 18 of Error: ReferenceCable systems technical evaluation criteria for the documentation exercise

Level 1 Gatekeeper

TASK / MEASURE

CriteriaClause 3 of

this document

Acceptance: Yes/ No

Completed Technical Schedules submitted? 3 and Annex A, B, C, D

A formal design report with all design drawings, single line diagrams, design options, calculations, studies and tender submission documents as is required in this document submitted?

3

Are the factory acceptance test plans and quality inspection test plans for the cable manufacturing and accessories manufacturing in English submitted, and does it include a factory cable system sample test for conductor bigger than 1000mm2?

3

Are all the project stage quality inspection plans for the cable trench, cable installation, cable termination, earthing and bonding, DTS, dynamic cable rating system and after installation testing in English submitted?

3

Are the installation instructions for the cable terminations and joints in English submitted? 3

Are the maintenance and operational manuals for the cable system in English submitted? 3

Are the cable system design life calculations submitted? 3

Are the cable system ampacity calculations submitted for all options required? 3

Is the entire individual cable system project required offer options submitted? 3

Is the sheath standing voltage calculations submitted? 3

Are all drawing submitted for the cable trench design, termination steel support structures, cable racking where applicable, wooden clamps, terminations, joints, etc.

3

Are the procedures, method statements, quality inspection test plans, quality inspection plans, quality control plans and project holding points submitted as is required in clause 3.1 Error: Reference source not found

3

Are a proposal for all the required training submitted 3

If applicable for subcontracting the cable trenching and installation, the cable trenching contracting company name and a formal technical evaluation report to proof that the nominated company is approved and found competent for the trenching and cable installation.

3

A 10 year cable system guarantee in writing based on standard Eskom operating conditions 3

Has all the IEC 60840 type testing been performed at an accredited type test facility? 3

Is all type testing requirements met in accordance with the Eskom and IEC requirements? 3

Does the completed schedule B meet Eskom schedule A requirements? (i.e. all items with value/ description on schedule A)

3 and Annex A, B, C, D

Are all documentation and manuals referred to in clause 3 of the Eskom specifications submitted in both hard copy and soft copy? (I.e. Type test reports, pre-qualification reports, excel spread sheet calculations, drawings, installation,

3







Cable systems technical evaluation criteria for the documentation exercise

Level 1 Gatekeeper

TASK / MEASURE

CriteriaClause 3 of

this document

Acceptance: Yes/ No

maintenance and operating manuals)

Is the submission compliant as specified in clause 3.1 of this report 3

Is the design life, cable ampacity and sheath standing voltage calculations submitted compliant as specified? 3

Are all manuals, drawings type test reports and pre-qualification test reports in English? 3

Are the training proposal submitted in accordance with the Eskom specification requirements? 3

Were type tests performed for the OEM components and materials offered? 3

Were the DTS design, dynamic cable rating system design, ampacity calculations, manufacturing detail, and installation methods submitted 3

Factory routine tests failure rate submitted. (Number of failed cable drums and accessories routine tests/ number of cables tested per annum) – Figures must be auditable for the last 2 years

Any one “NO” on the above scores in Table 1, the supplier will be disqualified.







Annex D000 – Technical evaluation criteria for the HV cable systems projects – Gatekeeper level 2 (Additional scoring requirements)

Table G.1: 2: Level 2 technical evaluation criteria score

HV Cable systems technical evaluation criteria for the documentation exerciseLevel 2 scoring/rating - (only submission that passes Level 1 gatekeepers)

TASK / MEASURE

Criteria Scoring weight

Acceptance (Yes/

No)Score

Technical Schedules correctly completed 1

Are cable design detail drawings containing references to dimensions, cable construction components, raw materials specified and type tested 1

Are outdoor termination design detail drawings containing references to dimensions, termination construction components, raw materials specified and type tested 1

Are joint design detail drawings containing references to dimensions, joint construction components, raw materials specified and type tested 1

Are link disconnecting boxes design detail drawings containing references to dimensions, construction components, raw materials specified and type tested 1

Are SVL design detail drawings containing references to dimensions, construction components, raw materials specified and type tested 1

Are bonding lead design detail drawings containing references to dimensions, construction components, raw materials specified and type tested 1

Submitted Cable Drum packaging detail and drawings 1

Submitted Termination packaging detail and drawings 1

Submitted Joint packaging details and drawings 1

Ampacity calculations methodology for all loading scenarios as described in clause 3 1

Submitted Short Circuit calculations 1Sheath standing voltage calculations studies, and steady state and transient state studies, considering the influence of parallel running cable circuits submitted and compliant.

1

Are provisional structural supports, racking, clamps and/or cleats design detail drawings containing references to dimensions, construction components and raw materials specified

0.5

Are termination structural support and foundation design detail drawings containing references to dimensions, construction components and raw materials specified 0.5

Method statement for works execution and project plan 100% completed for the scope of works specified 1

Are the submitted project roles and teams organograms reflective for the scope of works specified 1

Are Type-test reports referencing the component OEM names and materials type tested 1

Is the DTS design detail drawings showing the fibre optic cable requirements and the installation position on the cable 1

Are the After Installation test proposal practical and equipment rating considerations for on-site testing considered in the method statement 1

Is the short circuit current withstand tests performed and submitted for the CSA to termination / joint connection method? 1

Total = /20



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