scope:

This Specification applies to the application and reapplication of protective coating systems to Network Rail's infrastructure, except for rails and other track components.

This Specification covers the use of coating systems for the corrosion protection and fire protection of structural steelwork, and for the protection of timber, concrete, and masonry structures. In addition, details of procedures for undertaking coating and corrosion surveys are provided in Appendix A.

Ideally, a protective coating product/system will provide a nominal 25 year service to its first maintenance. However, products and systems that had been tested under the 3000 hours (15 years) protocol under RT/CE/S/039 (RT98) may continue to be used (see 8 of NR/L3/CIV/039).

There will be instances where it would not be practicable to comply with all requirements of this Specification; for example, with minor works, maintenance works, and when the work has to be completed within short possessions. In such cases a 'do best' approach shall be followed under the direction and approval of the Engineer with regard to, for example, surface preparation, coating application and containment, but in all cases the coating materials shall certified in accordance with NR/L3/CIV/039 Specification for the assessment and certification of protective coatings and sealants. Accordingly, some of the requirements given in Contract documentation, Task briefings, Method statements etc. may differ from those stated herein.

Guidance and background information on the application of this Specification are provided in NR/GN/CIV/002: The use of protective coatings and sealants.

Purpose

The purpose of this Specification is to define the requirements for the selection and use of protective coating systems for Network Rail's infrastructure.

The prime reason for applying and reapplying protective coatings is to preserve and protect the infrastructure so that it provides the required service life in the most cost-effective manner. However, there are cases where the colour of the final coat has to comply with regulations that govern the safe operation of the railway and/or to satisfy aesthetic requirements.