Level 2 specification
NR/L2/TEL/30113
Specification for the Maintenance of Clocks (formerly NR/WI/TEL/30113)
Issue 2, March 2009
Maintenance specification for station and operational clocks used by Network Rail or the SFO: yearly Service A covering alarm/diagnostic checks, display cleaning, analogue hand alignment, digital segments and backlights, MSF/GPS or master clock synchronisation (not free running), correct time, mountings, cables, water ingress and corrosion.
Clause map — what each clause deals with
| 1 | Purpose | Sets out an inspection regime for clocks to reduce failures from wear and catch defects before they affect service |
| 2 | Scope | Applies to everyone maintaining clocks owned or used by Network Rail or the Station Facilities Operator |
| 3 | Definitions (in addition to those defined in NR/L2/TEL/31002) | Defines SFO only, adding to the general maintenance definitions in 31002 |
| 4 | Responsibilities | Maintainer must avoid disturbing safety or working kit without user agreement, protect the public, avoid peak hours and report defects via fault control |
| Appendix A | Clocks | Service A, default yearly: alarm check, clean display, hand alignment or digital segments, sync to MSF/GPS or master clock (not free running), time, fixings, water, corrosion, label and log |