Network Rail

Specification for Safe Working and Maintenance on or Near Signalling Power Distribution Equipment above 175 Volts: Inspection and Maintenance Periodicities (Including Risk Based Maintenance Criteria) for Signalling Power Distribution Equipment above 175 Volts - Compliance Date: 7 December 2018
 N NR/L2/SIGELP/50000/MODA ISSUE 1

Annotation

This module defines the minimum inspection and maintenance frequencies for the tasks contained within work instructions referenced from NR/L3/SIGELP/50001.

This module also contains the criteria for the application of risk based maintenance on signalling power supply equipment above 175 V ac.

Note: This module affects the following signalling power supply equipment on Network Rail managed Infrastructure:

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Signalling Power supply equipment above 175 V ac in equipment housings including FSPs, location cases, relay rooms, REBs, etc.

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Signalling Power supply cabling and cable routes

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Insulation Monitoring equipment on signal power supplies above 175 V ac

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Interrupter cabling

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Temporary protective measures

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Electronic Protection Relays installed on signalling power supply equipment above 175 V ac

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