Transmission

Refurbishment & Strategic Spares

Principles and Plan September 2014

Transmission Assets and Infrastructure

2014/10/13 2

Substations

Lines Protection & Control

Outdoor plant

Equipment Age Profile

2014/10/13 3

Transmission Grid: Age of Major Equipment

0

20

40

60

80

100

120

0-5 5-10 10-15 15-20 20-25 25-30 30-35 35-40 40-45 45-50 50-55

Age in Years

Nu

mb

er

of

un

its

Transformers Transmission Lines Shunt Banks Reactors Series Banks SVC

Age is used for long term planning and plant health assessments are used for

short term planning

2014/10/13 4 2014/10/13 4

Refurbishment - General Principles

• Eskom Project Life Cycle Model (wires PLCM) is followed.

• Investment justifications are based on following criteria:

• Statutory

• Strategic

• Least Economic Cost

• Operating Cost Reduction

• Assets to be refurbished in accordance with asset life-cycle

management plans (LCMP’s).

• Condition, criticality & risk assessment (CCRA) principles are being

implemented for refurbishment investment decisions. (Likelihood of

asset loss vs. criticality of the asset to the network)

Refurbishment Capital Expenditure Drivers

• Refurbishment

• Targeted Asset Performance Improvements

• Refurbishment of existing assets

• Physical security improvements, surveillance and monitoring

• Strategic and operational spares holding (to reduce SML<1 and major incidents risk)

• Compliance (Regulatory, OHS Act, NKP Act, Environmental etc.)

• Asset Purchases

• Specialised equipment for: live-line work; fault location systems, and online condition monitoring.

Refurbishment projects

2014/10/13 6

106

73

127

100

30

28

39

16

127

Thank you