NS171
Firestopping in substations
NS171: Firestopping in substations
This Network Standard for the installation of firestopping materials in openings in substation walls, floors and ceilings applies in particular to penetrations caused by cables, cable ducts, encased busbars and other services where the fire integrity of the structure is required to be maintained.
Scope
This Network Standard sets out the requirements for the installation of firestopping materials in openings in substation walls, floors, and ceilings. The openings include holes, slots and other penetrations for electrical services, such as cables, electrical conduits and busbars within an electrical substation.
This Network Standard also sets out the requirements for the fire protection of cables within a substation.
This document does not address the firestopping of other service penetrations.
The requirements of this Network Standard apply to:
- all substations and similar installations, unless indicated otherwise; and
- associated cable installation facilities external to a substation chamber but contained in, or
adjacent to, the “host" building. This includes cable risers, cable turning rooms, and pits.
In addition to this Network Standard, all buildings shall comply with the National Construction Code (NCC/BCA), Australian Standards, and any other relevant codes and standards in respect to fire segregation and firestopping within the building.
All persons, including Ausgrid staff, Accredited Service Providers, Contractors, and any other persons involved with electrical and/or construction work in substations, shall comply with this Network Standard.