NR/L2/SIG/11107
Silver Migration
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Organization: | NR |
Publication Date: | 3 March 2012 |
Status: | active |
Page Count: | 12 |
scope:
Applies to all relays, plugboards and plug couplers formed of black phenolic material.
Purpose
Silver Migration can lead to wrong side failures.
This standard specifies:
a) The required inspection regime
b) Remedial actions to be taken
c) Competence for staff undertaking inspections
The high risk conditions are also described.
Document History

NR/L2/SIG/11107
March 3, 2012
Silver Migration
Applies to all relays, plugboards and plug couplers formed of black phenolic material.
Purpose
Silver Migration can lead to wrong side failures.
This standard specifies:
a) The required...

December 3, 2011
Silver Migration
Applies to all relays, plugboards and plug couplers formed of black phenolic material.
Purpose
Silver Migration can lead to wrong side failures.
This standard specifies:
a) The required...

August 26, 2008
Silver Migration (aka NR/SP/SIG/11107)
The contents of this Level 2 document apply to all signalling installations which use silver plated connectors on plug-in apparatus.
Further contamination problems with relay plugboards are...

December 1, 2000
Silver Migration (aka NR/SP/SIG/11107)
The contents of this Specification apply to all signalling installations which use silver plated connectors on plug-in apparatus.
Further contamination problems with relay plugboards are considered...