NR TI 137 ISSUE 1 PDF

This TI applies to the campaign change programme being managed by Infrastructure Investment Group and shall not be used for any other changes. The Sites that this and the supporting TIs can be applied to have been identified within the campaign change remits / investment papers. This does not automatically mean that the change can be made, as each site shall be assessed to consider the viability of doing the campaign change. The campaign change programme is part of an authorised project that is Project Managed and Projected Engineered by IIG. The changes to the as built signalling records shall be managed by the IIG Project Manager and shall be amended as part of these works. Where the campaign change physical works can not be fulfilled by the maintenance organisation the IIG Project Manager will arrange for the work to be done by alternative means.

Purpose

This Technical Instruction provides the process to be followed in the campaign change of Wig Wags, DCIs and MSLs to LED units from incandescent lamp units. It provides the information and guidance required to enable the maintenance organisation to make a judgement on whether they can carry out the work. This TI shall be used in conjunction with the Campaign Change Test Plans specific TIs for each of the type of light units being replaced (ref TI 138, TI 139 & TI 140).