NR NR/L3/ELP/SAI25/07 ISSUE 2 PDF

This module states the requirements for the isolation, testing and earthing of overhead line equipment and the issue of overhead line permits on Overhead Line Equipment.

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 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 in full on infrastructure they control.

This module 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 

Compliance with this module will promote safe operation of the Overhead Line Equipment and produce consistent implementation of earthed isolations. 

NOTE: The requirements of this module do not alter the requirements of the Rule Book GE/RT8000. Reference should be made to Rule Book module AC (GE/RT8000/AC) and Handbook 16 (GE/RT8000/HB16).