scope:

This module sets out guiding principles for carrying out risk assessments that support signalling design, whilst considering these assessments in a wider framework of system safety and legislation or other prescribed requirements such as Group or Company Standards.

This module considers the purpose of risk assessment and introduces an approach that aligns the risk assessments required by Standards with the requirements of CDM2015, CSM-RA and emerging Safety By Design initiatives, which are explained in this module. It is not intended as a manual for carrying out risk assessments, nor does it include detailed information on CDM2015, CSM-RA or Safety By Design, which are specialist topics in themselves. This module does however explain relationships between these topics and signalling design, and gives examples of aspects of signalling design and how they relate to risk assessment.

Purpose

The purpose of this module is to explain approaches to risk management that result in signalling systems that are designed so that risks are as low as reasonably practicable (ALARP). The way to achieve this is by carrying out risk assessments as a key component of risk management.