scope:

This standard shall be used when any new or altered infrastructure, which is to be introduced or modified by any Supplier or Third Party, and for which it is credible that EMI generated or transmitted by the new or altered infrastructure will impact any LU Signalling System assets.

If any part of the new or altered infrastructure is located in the Vicinity of a LU route then the requirements of this standard apply to all elements that can credibly pose a threat to LU Signalling System assets.

Note This standard does not cover situations where LU may affect 3^rd Party Signalling. Compliance with the 3^rd Party standards shall be required.

Purpose

The purpose of this standard is to define the requirements for the management and control of sources of Electromagnetic Interference (EMI) so that any resulting disturbance to London Underground (LU) Signalling System assets is kept within acceptable limits.