Question NW686 to the Minister of Cooperative Governance and Traditional Affairs

Share this page:

05 April 2018 - NW686

Profile picture: Waters, Mr M

Waters, Mr M to ask the Minister of Cooperative Governance and Traditional Affairs

Whether the three substations situated in (a) Jet Park Ward 17, (b) corner of Elberfield and Van Riebeeck Roads, Gerdview Ward 92 and (c) Meppen Road, Gerdview Ward 92 in the Ekurhuleni Metropolitan Municipality that were recently hit by lightning were earthed; if not, why not, in each case; (2) what are the relevant details of the maintenance plan of all substations in the specified municipality; (3) whether he will provide Mr M Waters with a copy of the maintenance plan; (4) whether the municipality has the instruments to measure the gas levels at each substation; if not, (a) by what date will the municipality receive such instruments, (b) what number of instruments will be received and (c) how does the municipality measure gas levels at present; if so, what number of (i) substations use gas and (ii) instruments do the municipality currently have?

Reply:

1. (a), (b) and (c):

All substations within Ekurhuleni, including all electricity distribution equipment, are earthed in accordance with the standard design and engineering standards applicable to the relevant equipment.

2. Maintenance work is carried out in terms of the department’s approved maintenance plan which inter alia includes the following:-

PRIMARY SUBSTATION INSPECTIONS

SECONDARY SUBSTATION INSPECTIONS

MINIATURE SUBSTATION INSPECTIONS

KIOSK INSPECTIONS

BATTERY INSPECTIONS

TRANSFORMER TAPCHANGER MAINTENANCE

INFRA RED SCANNING

CABLE SHEATH TESTING

CABLE OIL PRESSURE READINGS

OIL SAMPLING

OVERHEAD LINE INSPECTIONS

PRIMARY SUB - INTRUSIVE MAINTENANCE

SECONDARY SUB - INTRUSIVE MAINTENANCE

MINIATURE SUBSTATION INTRUSIVE MAINTENANCE

FOLLOW UPS - HIGH PRIORITY

FOLLOW UPS - MEDIUM PRIORITY

FOLLOW UPS - LOW PRIORITY

OVER INSPECTIONS

PRIMARY SUB CLEANING

NETWORK OPTIMIZATION

3. Copy of the maintenance plan is attached to this response Annexure A.

(4) The Municipality has the instruments to measure the gas levels since gas filled equipment, for example circuit breakers, where installed in substations, are equipped with gas pressure monitoring instrumentation when purchased. These instruments are inspected as per the maintenance plan to ensure that the pressures are correct.

(a) Not applicable

(b) Not applicable

(c) The circuit breakers filled with Sulphur Hexafluoride gas (SF6) are equipped with gas monitoring instruments fitted to them

(i) The estimated number of substations that have SF6 filled circuit breakers are 51. These are mainly the Primary Substations.

(ii) The estimated number of circuit breakers filled with SF 6 gas monitoring equipment are 419.

NW760E

Source file