NS190

NS190: Oil Containment Operational Requirements for Major Substations

Details the requirements for the operation of oil containment systems at major substations.

Scope

This Network Standard details the requirements for the operation of oil containment systems at major
substations.

The primary objectives of this document are to:

• ensure a consistent approach for the management of oil containment systems; and
• provide clear instructions on the operational requirements for oil containment systems.

This standard does not include requirements for pole top transformers & capacitors, distribution & customer substations, regulators, tap changer auto transformer substations, reclosers or oil-filled cables and its associated pressure vessels.

Oil containment operational activities include inspection of oil depths, sludge depth and stormwater discharge concentrations, cleaning and waste removal.

This standard applies to all persons including Ausgrid, contractors, sub-contractors and associates.

Requirements for the design of oil containment at major substations are outlined in NS189.