scope:

This module states the requirements for the isolation and earthing of overhead line equipment where local isolations are specified in the isolation instructions. It is applicable to Network Rail personnel and to Network Rail's contractors.

It is also applicable in relevant part to Train Operating Companies having locally controlled 25 kV a.c. overhead lines which abut those controlled by Network Rail.

To provide a consistent approach to working on or about 25 kV a.c. electrified lines, Train Operating Companies may, as best practice, apply this standard in full on infrastructure they control.

Purpose

This module will promote safe operation of the 25 kV a.c. electrification system and produce consistent implementation of secure isolation procedures at locally controlled sidings and depots. Further requirements for working on or about the electrified lines are contained in the Rule Book Module AC (GE/RT8000/AC).