scope:

This module states the requirements for the management of local earthed isolation instructions for the isolation and earthing of Overhead Line Equipment where local earthed isolation is allowed, in accordance with Module 8, on Overhead Line Equipment.

It is applicable to Network Rail personnel and to Network Rail's contractors.

It is also applicable to Train Operating Companies having locally controlled Overhead Line Equipment which abut those controlled by Network Rail.

To provide a consistent approach to working on or about Overhead Line Equipment, Train Operating Companies may, as best practice, apply this standard on all infrastructure they control.

This Standard also includes:

• Work on or about any future sections of electrification on Network Rail controlled infrastructure and areas required to adopt a process for securing points of disconnection to form points of isolation to use the Supplementary Isolation Process (Module X).

• Planning of isolations, testing and earthing of overhead line equipment on Network Rail controlled infrastructure equipped with 750V d.c. overhead line system (Sheffield Tram Train - Module Y).

• Planning of isolations, testing and earthing of overhead line equipment on Network Rail controlled infrastructure equipped with 1500V d.c. overhead line system (Sunderland Metro Systems Operating Area - Module Z). 

Purpose

This module provides a consistent approach to the production, approval, distribution and auditing of local earthed isolation instructions on Overhead Line Equipment.

NOTE: Further requirements for working on or about the electrified lines are contained in the Rule Book Module AC (GE/RT8000/AC) and Handbook HB16 (GE/RT8000/HB16).