NR TWI 3G131 ISSUE 1 PDF

Introduction

For the purposes of this TWI, it is assumed that the initial specification for all planned packages of work is solely to meet the scope of the problem identified, be it a maintenance item or major investment project.

For all planned packages of work specified for implementation on the track asset, the opportunity should be sought to reduce residual risk in the asset being treated. Any improvements need to take account of extra time, costs, resources, and design constraints comparing the removal of risks if reasonably practicable using the principles of ALARP (As Low as Reasonably Practicable).

This TWI should be applied whenever an individual is specifying or implementing work. It aims to gives guidance on identifying what can be considered a reasonable opportunity, use of the corporate risk recording processes to record the residual risk and individual responsibilities.

Positive application and optimisation of benefits may require dialogue with Operations and Finance colleagues although the ultimate decision will rest with the:

Track Maintenance Engineer (TME) for maintenance activities; and

Route Asset Manager [Track] (RAM [T]) for investment works.

The Network Rail responsible person for implementation management (Track Maintenance Engineer, Project Engineer or Contractor’s Responsible Engineer) will need to apply technical knowledge and site interpretation to identify when additional opportunities, or conflicts, arise from specifications

o Persons specifying works should:

• apply the principles of “ERIC”;

• Eradicate (design out);

• Reduce (minimise and control residual risk);

• Incorporate (recognise the risk and minimise impact by chosen controls); and

• Control (recognise the risks and limit individuals exposure to harm).