Level 1 policy
NR/L1/TEL/30093
Telecoms Maintenance
Issue 3, March 2010
Level 1 standard setting the overall process for preventive and corrective maintenance of Network Rail telecoms assets, pointing to the supporting standards for testing, installation, fault management, demarcation, surveillance and competence.
Clause map — what each clause deals with
| 1 | Purpose | Mandates the maintenance work stream of the telecoms standards framework; read with the telecoms engineering policy NR/L1/TEL/30102 |
| 2 | Scope | Covers NR-owned and leased operational telecoms and station information systems, both preventive and corrective work, with exclusions for owner-maintained and finance-leased assets |
| 3 | Definitions | Terms such as booster transformer, finance leased assets, operational telecoms, SISS and SRTF |
| 4 | Responsibilities | Who specifies maintenance instructions, test plans and frequencies, who puts them into contracts and who writes the standards |
| 5.1 | Aim | Use planned and fault maintenance plus testing before return to service to keep assets safe, reliable and long-lived |
| 5.2 | Method | Maintenance activities must follow documented processes |
| 5.2.1 | Preventive maintenance | Work follows maintenance specifications with minimum frequencies, increased locally if needed, and testing to NR/L2/TEL/31001 where required |
| 5.2.2 | Corrective maintenance | Faulting and replacements follow 31001 and 30028, system-specific standards apply, and fault priorities follow NR/SP/TEL/30024 |
| 5.2.3 | Safety | Work near safety related control circuits and during booster transformer outages follows the named standards |
| 5.2.4 | Fault management | Maintainer runs fault control with an approved fault system and manages SRTFs under NR/L2/TEL/30047 |
| 5.2.5 | Demarcation Points | Maintenance boundaries follow the telecoms network terminating points standard |
| 5.2.6 | Surveillance | Maintenance is subject to the inspection and surveillance standard |
| 5.2.7 | Competence | Staff must be competent under NR/GN/TEL/10117; safety critical work needs the right authority to work |