Project Name:Project Name:Premier Diamonds 88/3,3/6,6 kV S/S Premier Diamonds 88/3,3/6,6 kV S/S

Project ID:Project ID:NE-RFM-1NE-RFM-1107-2772107-2772

Presented by: Charles Cudjoe

Date: >>>TEF Date<<<

Technical Evaluation ForumTechnical Evaluation ForumTemplate Identifier 240-60811165 1

Document Identifier XXX-XXXXXXX X

Authorisation Date 05 March 2013

23-04-19 2Rev. 1Rev. 1

Eskom ValuesEskom Values

Zero Harm Integrity Innovation Sinobuntu Customer Satisfaction Excellence

23-04-19 3Rev. 1Rev. 1

ContentsContents

23-04-19 4Rev. 1Rev. 1

1. Decision Required1. Decision Required

The TEF is hereby requested to approve the technical content of the preliminary designs for the following project/job.

The TEF is also hereby requested to support the submission of the following project/job to the IC for financial approval.

Project Name

Job ID Job Name Scope of Work - Summary Total Cost

NE-RFM-1107-2772

Premier Diamonds 88/3,3/6,6 kV S/S

Substation refurbishment. Install new transformers

Grand Total Project Cost

23-04-19 6Rev. 1Rev. 1

3. Problem Statement3. Problem Statement

Provide what triggered the project: Substation is approximately 48 years old. The substation configuration is non-standard with no metering on the

Eskom side. Earthing on Isolators/Structures are missing posing a danger to

operators. All operating labels are not to standard. Large oil volume breakers and old isolators are redundant. No spares

available. The 88 kV VT`s are oil type and leaking. Substation fence is beyond repair Flooding and soil build up in sub yard Trfr DP values are low & some are PCB contaminated Block house still housing 3,3kV busbars (Safety concern)

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Supporting evidenceSupporting evidence

23-04-19 8Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 9Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 10Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 11Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 12Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 13Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 14Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 15Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 16Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 17Rev. 1Rev. 1

Supporting evidenceSupporting evidence

23-04-19 19Rev. 1Rev. 1

5. Project Schedule5. Project Schedule

Provide information on the causes of any delays of the project. State if there are other dependencies such as Environmental, Land

Acquisition, etc.

Existing Project Schedule

TEFBQDRADHOERACommissioningFRA

19

23-04-19 20Rev. 1Rev. 1

6. Load Forecast6. Load Forecast

Title

0

1

2

3

4

5

6

7

8

9

10

2010 2011 2012 2013

Lo

ad [

MV

A]

Fdr A Fdr B Fdr C 185X Cu

Double Click to edit.

23-04-19 21Rev. 1Rev. 1

6. Load Forecast6. Load Forecast

Annual Maximum Demand Forecast

32

33

34

35

36

37

38

39

2012 2013 2014 2015 2016 2017 2018 2019 2020

Lo

ad

[M

VA

]

Total Outgoing Feeders

23-04-19 22Rev. 1Rev. 1

7. Geographical Location7. Geographical Location

Mark where the project is taking place.

Show places others can use to orientate themselves such as major roads, cities

and substations.

Show the scale.

23-04-19 23Rev. 1Rev. 1

7. Geographical Location7. Geographical Location

NDP Area Bynes

Engineering Area Pretoria

Technical Services Area Pretoria FSC

Customer Services Area Pretoria

Field Services Area CullinanTSC

23-04-19 24Rev. 1Rev. 1

8. SHIM – Stakeholders Invited, Register, 8. SHIM – Stakeholders Invited, Register, Comments & Minutes Comments & Minutes

24

The recorded minutes of the Stakeholders Input Meeting, and the actual comments of all Stakeholders must be captured at the Stakeholder

Input meeting, scanned and included in the TEF presentation.

23-04-19 25Rev. 1Rev. 1

8. SHIM – Stakeholders Invited, Register, 8. SHIM – Stakeholders Invited, Register, Comments & Minutes Comments & Minutes

  NAME DEPARTMENT TELEPHONE

1 Kumarin Govender QOS (Plant) 012 421 4754

2 Vernon Lewis GOU (COW) #3308

3 Frans Kirsten Plant 083 787 2677

4 Martin Rafedile NS Planning 083 704 9376

5 Lethebe Mswazi CPM - Telecontrol 083 488 4766

6 M Beukman CPD COW #3308

7 TV Mahlangu CPMD Metering 082 077 2067

8 Larissa Wesi CPD – QS 011 721 2843

9 Levy Masenya PED – Menlyn 073 560 6666

10 Shaun Hards or Vincent Dreyer

Actom P & C-Control Plant 083 600 3277 or082 377 8030

11 Jorrie Jordaan Cullinan Field Services 082 375 3841

12 Charles Cudjoe NED 012 484 5044

13 Neels J v Vuuren Petra 082 803 0302

25

23-04-19 26Rev. 1Rev. 1

8. SHIM – Stakeholders Invited, Register, 8. SHIM – Stakeholders Invited, Register, Comments & Minutes Comments & Minutes

Planning • New fault studies have been done for the NDP   

Plant• 3,3kV b/bars to be removed.• Building will remain. • HV cables will be sealed off

   

 Control 

• investigate the metering. • Telecontrol (D20 RTU) needs Optic Fibre communication link to

Byness to work for communication to SCADA 

Customer Services •  Quote the customer for 1 additional transformer

   

26

23-04-19 27Rev. 1Rev. 1

9. Design Alternatives Considered9. Design Alternatives Considered

Option Description Technical Viable (Yes/No) Financial Analysis

Option 1 – Give a brief description. It should be the CRA scope of work.

Yes/No – Give evidence Cost implication

Option 2 – Give a brief description. It should be the options where there is additional work as per stakeholders inputs.

Yes/No – Give evidence Cost implication

Etc.

Please indicate the preferred one

23-04-19 28Rev. 1Rev. 1

9. Design Alternatives Considered9. Design Alternatives Considered

Option Description Technical Viable (Yes/No) Financial Analysis

Option 1 – Replace all 5MVA trf’s with 4 X 10MVA units.

Yes Cost implication

Option 2– Replace all 5MVA trf’s with 2 X 20MVA units. Upgrade the 3.3kV to 6.6kV

Yes Cost implication

Option 2 is the preferred one

23-04-19 29Rev. 1Rev. 1

10. Network Performance – Historical and 10. Network Performance – Historical and ExistingExisting

23-04-19 30Rev. 1Rev. 1

11. Existing Single Line Diagram11. Existing Single Line Diagram

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11. Proposed Single Line Diagram11. Proposed Single Line Diagram

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12. Existing Substation General 12. Existing Substation General ArrangementArrangement

32

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12. Proposed Substation General 12. Proposed Substation General Arrangement cont.Arrangement cont.

23-04-19 34Rev. 1Rev. 1

13. Existing Network Diagram13. Existing Network Diagram

Bynes 132kV & Esselen 88kV network

Bynes 88kVBynes 132kV

23-04-19 36Rev. 1Rev. 1

14. Control Plant Scope of Work14. Control Plant Scope of WorkExisting Equipment

Proposed installation or replacement

Reason for new installation or replacement

AC/DC 220VDC Panel 110VDC Panel with an ACO built-in

Old scheme and conversion to 110VDC

DC System 220VDC battery bank with FCP17 lead-acid cells, housed in a separate battery room

110VDC battery bank with NiCAD cells

Standardised on 110VDC. Battery room will be converted into an extension of the current control room

88kV Metering No 88kV Stats Panel 1x Stats Panel New installation

6.6kV Metering 2x Tariff Panels(Non-standard)

2x Tariff Panels Existing panels not to standard and not sufficient to cover metering requirements

88/6.6kV Transformer(Trfs 5 & 6)

Old phase 1 schemes 2x 4TM7100 schemes Old schemes to be upgraded

23-04-19 37Rev. 1Rev. 1

14. Control Plant Scope of Work Cont.14. Control Plant Scope of Work Cont.

Existing Equipment

Proposed installation or replacement

Reason for new installation or replacement

88/6.6kV Transformer(Trfs 1 & 2)

Non existent 2x 4TM7100 schemes New installation

88kV BusZone Older phase 1 schemes 1x 4BZ5800 scheme Old schemes to be upgraded

88kV Feeders Older phase 1 schemes 3x 4FZD3920 protection scheme

Old schemes to be upgraded

Tele-control Non existent 1X D20 RTU 1X BME1X Fibre Patch Panel

New installation

23-04-19 38Rev. 1Rev. 1

14. Proposed Control Room Layout14. Proposed Control Room Layout

23-04-19 39Rev. 1Rev. 1

15. Power Plant Scope of Work15. Power Plant Scope of Work

Give a description of the work to be done: Specify new equipment, its size and quantity. Specify equipment to be decommissioned. Specify changes in network configuration. Separate the work that is covered by the customer from the work to be

done by Eskom.

23-04-19 40Rev. 1Rev. 1

15. Power Plant Scope of Work15. Power Plant Scope of Work

HV SideReplace all (8) 5MVA trfr`s(double banked units) with (2) single 20MVA unitsReplace 88kV VT`s on BusbarReplace WOD`s switches with 132kV Breakers on Tfr1-4Replace all Isolators including bus sections with new double break 132kV unitsReplace 88kV busbar Conductor to standard Bull conductorInstall new 132kv bkr on 88kV Zonderwater incoming line with Stats metering.Move all line surge arrestors to busbar side of line isolatorReplace all surge arrestors on Trfr`s 88/6,6/3,3 kVReplace all 88kV incoming cables with overhead lines

MV SideInstall new 3,3 kV (6,6kV) feeder cable supportsInstall new 11kV Isolators on 3,3kV side for isolation between Eskom and CustomerInstall new 11kV transformer kiosk breakers and Vt`s for protection and metering on 3,3kV side Construct MV transformer bay according 2/ET-15108

23-04-19 41Rev. 1Rev. 1

15. Power Plant Scope of Work cont.15. Power Plant Scope of Work cont.

Civil & other WorkCivil & other Work

Build a bund wall around all Transformer plinthsInstall an oil holding damBuild a retaining wall to prevent floodingReplace bolted connections with crimp connections.Test earth mat and repair if necessaryReplace all equipment labels.Replace yard overhead screening wire to Hare conductorInstall yard lights

Replace fence with steel welded galvanised fence enclosing control room Replace the roof of the control room Supply 9 sets of 10kA earth/applicator sticks with lock-up box (2-Et/14904) Repair Control room and install Desk(2-ET/14904) All indoor bus bars, isolators, panels are to be removed. New trfr panels move to

control room

23-04-19 42Rev. 1Rev. 1

16. Site/Route/Township Plan16. Site/Route/Township Plan

42

ZETA

POTCH DS

NEW SUB

OPTION1

Route directly to Potch DS

Lines and Cables: Provide geographical layout of the route showing other mapping details such as roads, erven, rivers, wetlands, contours, etc.

Substations: Provide geographical layout of the substation site showing other mapping details such as roads, access, private properties, rivers, wetlands, contours, etc.

Developer and Electrification: Provide the development layout with respect to existing network.

23-04-19 43Rev. 1Rev. 1

16. Site/Route/Township Plan16. Site/Route/Township Plan

43

23-04-19 44Rev. 1Rev. 1

17. Materials Selection17. Materials Selection

Description

General Conductor

VoltageFuture Fault Level Maximum

LoadSize

Conductor RatingBurn Off

3 Phase 1 Phase Normal Emergency

HV Incomer

HV Busbar

Trfr HV Side

Trfr MV Side

MV Busbar

DescriptionBreaker Isolator Current Transformer VT SA

Cont. 3sec Cont. 3sec Cont. 3sec Voltage Voltage

HV Incomer

HV B/C or B/S

Trfr HV Side

Trfr MV Side

MV B/C or B/S

MV Feeders

The purpose of this slide is to compare load

and fault level requirements to material

selection.

23-04-19 45Rev. 1Rev. 1

17. Materials Selection17. Materials Selection

Description

General Conductor

VoltageFuture Fault Level Maximum

Load (A)Size

Conductor Rating Burn Off (s)3 Phase 1 Phase Normal (A) Emergency (A)

HV Incomer

88kV

Bear

HV Busbar 1350 Bull 1350 1680

Trfr HV Side 131.2 Centipede 833 A 1340A

Trfr MV Side6.6kV

1750 Twin Bull 2700 3360

MV Busbar - - - -

DescriptionBreaker Isolator Current Transformer VT SA

Cont. 3sec Cont. 3sec Cont. 3sec Voltage Voltage

HV Incomer 3150 40kA 2500 40kA 2500 40kA - 88kV

HV B/C or B/S - - 2500 40kA - - 88kV -

Trfr HV Side 3150 40kA 2500 40kA 2500 40kA - 88kV

Trfr MV Side 2500 25kA 2500 25kA - - 3.3 / 6.6kV 3.3 / 6.6kV

MV B/C or B/S - - 2500 25kA - - - -

MV Feeders 2500 25kA 2500 25kA - - - 3.3 / 6.6kV

Note: A cable will go out from the s/s to the customer’s common point of connection

23-04-19 46Rev. 1Rev. 1

18. DRA Decommission Input Sheet18. DRA Decommission Input Sheet

Use ‘Print Screen’ to copy this table.

23-04-19 47Rev. 1Rev. 1

18. DRA Decommission Input Sheet18. DRA Decommission Input Sheet

Details of Assets to be decommissioned Job Number:Project Name: Premier Diamonds 88/6,6/3,3 kV sub

Disposal

1 2 x 5MVA Trfrs N/A 2 #VALUE! Zero To TSG Witbank X2 8 x 88kV Isolators N/A 1 #VALUE! Zero Scrap 4,800 X3 1 x 88kV breakers N/A 1 #VALUE! Zero Scrap 1,200 X4 15x 88kv Ct`s N/A 1 #VALUE! Zero Scrap 9,000 X5 6 x 88kV Vt`s N/A 1 #VALUE! Zero Scrap 1,800 X6 3x Nulec reclosers N/A 2 #VALUE! Zero to Plant slab X7 X8 X9 X10 X11 X12 X13 X14 X15 X16 X17181920

-R -R 16,800.00R

ASSET REGISTER

PROFIT/LOSS RELATED TO DECOMMISSIONING OF ASSETS

Net Book Value (NBV) 0Less: MATERIAL Returned to Store (RTS) 0Less: SCRAP SALES (SS) 16,800Sub Total (NBV - (RTS+SS)) -16,800

Plus: LABOUR 0Plus: CONTRACTS 0Plus: TRANSPORT 0Plus: GENERAL EXPENSES 0Plus: ENVIRONMENTAL REHAB 0Cost to Dismantle 0

(PROFIT)/LOSS (R16,800)

TOTAL VALUE DECOMMISSIONING (R16,800) (Labour+Transport+Gen Exp+Enviro Rehab)-(RTS+SS)

Net Book Value as onItem

TOTAL

RightsBuild &

FacMachinery &

Plant

TYPE OF ASSETMaterials Return

to storeScrap Sales

LandDescription

Asset Register No.

Scrap (1) or Transfer (2)

Ratio (%) Partial decom

Use ‘Print Screen’ to copy this table.

WRONG FORMAT!

23-04-19 48Rev. 1Rev. 1

19. Project Costing Detail19. Project Costing Detail

Cost Component DRA JOB 1 DRA…N TOTAL DRAEngineering Costs (E) R 10,000,000 10,000,000.00R 10,000,000.00R Materials (M) R 1 1.00R 1.00R Internal Construction (C) External Contracts (E) R 298,248 298,248.00R 298,248.00R Commissioning (T)Overheads R 19,907 19,906.55R 19,906.55R IDC -R -R Land and Rights (L) R 1,240 1,240.00R 1,240.00R Total Project Cost R 10,319,396 10,319,395.55R 10,319,395.55R Approved CRA Amount R 2,000,000 2,000,000.00R 2,000,000.00R Contingency R 32,407 32,407.00R 32,407.00R Long Lead Material R 2,000 2,000.00R 2,000.00R

PROVIDE HIGH LEVEL SCOPE FOR EACH JOB

23-04-19 49Rev. 1Rev. 1

20. Customer Capital Contribution 20. Customer Capital Contribution CalculationsCalculations

Provide the breakdown of customer capital contribution calculations. Provide the basis in which percentage contribution is based upon.

Engineering Costs (E) R 10,000,000 2,000,000 R 8,000,000Materials (M) R 1 R 1Internal Construction (C) External Contracts (E) R 298,248 100,000 R 198,248Commissioning (T)Overheads R 19,907 R 19,907IDCLand and Rights (L) R 1,240 R 1,240Total Project Cost R 10,319,396 2,100,000 R 8,219,396Approved CRA Amount R 2,000,000Contingency R 32,407 R 32,407Long Lead Material R 2,000 R 2,000

Customer Contribution

Eskom ContributionDRACost Component

49

STATE N/A IF NOT REQUIRED

23-04-19 50Rev. 1Rev. 1

21. Financial Analysis/PEM21. Financial Analysis/PEM

Provide FEM Assumptions FEM is required for all projects

that are: For strengthening and

refurbishment. For direct customer and the

customer is not paying the full project cost.

For electrification and the DOE is not paying the full project cost.

Even FEM’s with negative NPV need to be presented.

23-04-19 51Rev. 1Rev. 1

22. Risk and Mitigation Strategy22. Risk and Mitigation Strategy

51

Risk Impact on Project Mitigation Strategy ImpactUnder-estimation of integration/interface effort of SAP with third party systems

Project Schedule

Project Cost

Project Quality

Provide adequate contingency for integration

High

Organisation may not be prepared to accept newly implemented solution

Realisation of Benefits Strong change management and training required.

Medium

Inability to achieve standardisation (This is largely an effect of improper, ineffective change management)

Realisation of Benefits Limit exceptions in process design. Effective socialisation of new processes across the organisation

Low

• Indicate if the mitigation is an allocation of funds in the contingency to cater for the uncertainty factor

• Is this amount also in the financial budget for the year

• If applicable reduce or increase the number of risks

23-04-19 52Rev. 1Rev. 1

23. Long Lead Materials – Primary Plant23. Long Lead Materials – Primary Plant

Lead Time (Mths) Quantity Amount ( Rands ) %

3 2000 1,236,380R 80.1%

PMB 3 3 287,793R 18.6%

Poles 3 16 12,000R 0.8%

Hare conductor 3 1214 8,304R 0.5%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

1,544,477R 100.0%Total Long Lead Time Material Approved

LONG LEAD TIME MATERIAL REQUIRED

Item Description

22kV 185mm sq 3c XLPE copper cable

23-04-19 53Rev. 1Rev. 1

23. Long Lead Materials – Control Plant23. Long Lead Materials – Control Plant

Lead Time (Mths) Quantity Amount ( Rands ) %

3 2000 1,236,380R 80.1%

PMB 3 3 287,793R 18.6%

Poles 3 16 12,000R 0.8%

Hare conductor 3 1214 8,304R 0.5%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

0.0%

1,544,477R 100.0%Total Long Lead Time Material Approved

LONG LEAD TIME MATERIAL REQUIRED

Item Description

22kV 185mm sq 3c XLPE copper cable

23-04-19 54Rev. 1Rev. 1

24. Sequence of Construction Events24. Sequence of Construction Events

Discuss how will the project be constructed: Highlight the need for backfeeding / switching off the busbar. Highlight the number of outages and the number of customers that will

be affected as well as type of customers. Contingency plans during construction. Is there a need for mobile transformers, rhino units, RMU, voltage

regulators, live line, etc. “A picture is worth a 1,000 words”

23-04-19 55Rev. 1Rev. 1

24. Sequence of Construction Events24. Sequence of Construction Events

One 88/6.6kV transformer will be kept alive at a time while the other trfr bay is normalized

The 3.3kV side will be switched off and normalized while the 6.6kV is alive (Customer will provide the 6.6/3.3 kV transformers)

Repair the earth mat and fence and construct the dam Normalize transformer bays 1 and 3 Restring the b/b and normalize the feederbays

23-04-19 56Rev. 1Rev. 1

25. Impact on SAIDI During Construction25. Impact on SAIDI During Construction

56

Use the KPI impact calculator to determine the impact on SAIDI during

construction.

23-04-19 65Rev. 1Rev. 1

26. Environmental Summary 26. Environmental Summary

23-04-19 66Rev. 1Rev. 1

27. Other Technical Requirements27. Other Technical Requirements

Substations (See Substation Technical Requirements Template) HV Lines (See HV Lines Technical Requirements Template) HV Cables (See HV Cables Technical Requirements Template) Distribution: Overhead Lines (See Dx O/L Technical Requirements

Template) Distribution: Underground Cables (See Dx U/C Technical

Requirements Template) Electrification (See Electrification Technical Requirements

Template)

Delete all that is not to your project including the red text!>>>Add the applicable Technical Requirement Slides Beyond This Slide<<<

23-04-19 67Rev. 1Rev. 1

Annexure/Additional Information

Transformer Make

PCB

MVA Rating

Year of Manufacture

Serial No DP Value

1A Asea Y

1B Brush R

2A Asea G

2B Desta G

3A Asea Y

3B Brush R

4A Ferranti N

4B Brush Y

5 Alstom G

6 Alstom G

5MVA

5MVA

5MVA

5MVA

5MVA

5MVA

5MVA

5MVA

20MVA

20MVA

1966

1990

1966

1997

1966

1988

1988

20091

06/60176

20083

T2316

20093

51451

138523

51452

28928

28930

500 DP value degrade by +- 30 per year

550

340

490

910

490

310

410

750

420Note:

If unit reach DP of <200 extensive paper degradation took place and reactor is at serious risk of failure