CLC/TR 50488:2006

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Basic principles
  4.1 Safe operation
  4.2 Personnel
  4.3 Organization
  4.4 Communication (Transmission of information)
  4.5 Work location
  4.6 Tools, equipment and devices
  4.7 Drawings and records
  4.8 Signs
5 Standard operational procedures
  5.1 General
  5.2 Operating activities
  5.3 Functional checks
6 Working procedures
  6.1 General
  6.2 Dead working
  6.3 Live working
  6.4 Working in the vicinity of live parts
7 Maintenance procedures
  7.1 General
  7.2 Personnel
  7.3 Repair work
  7.4 Temporary interruption
  7.5 End of maintenance work
8 Guidance for distances in air for working procedures
Annex A (informative) Method of calculation of the
        distances in air for working procedures
Bibliography

This Technical Report (TR) is applicable to all work activity on or near the overhead contact line [IEC 60050 811, definition 811-33-02] of railway installations with supply voltage values as described in Table 1, derived from EN 50163. This Technical Report applies to requirements for safe working and maintenance procedures. It applies to all electrical work activities as well as non-electrical work activities. This Technical Report deals with the electrical hazard only. Risks coming from train traffic are not covered in this document. This Technical Report does not apply to: -guided mass transport systems such as tramways, elevated and underground metro railways, mountain railways, trolley bus and other conductor rail systems; -mine or other internal industrial material transportation railways; -railway installations with supply voltage values below 1 500 V; -experimental electrical research work.