scope:

This module specifies the requirements for OCS allocation design. 

This module is applicable to modification of, renewal of, or new railway subsystems that impact on the OCS and, in particular, any work that impacts the integration of the OCS with the corresponding features of other interconnected systems. 

This module is applicable to all OCS Designers. 

Purpose 

The purpose of this module is to specify the Network Rail requirements to meet legislation and to achieve safety, economy and performance when developing the principal features of an Overhead Contact System (OCS), in particular the integration with other interconnected systems. 

This module provides a common strategy to demonstrate compliance and optimise the design of railway subsystems but is not intended to reiterate legislation and governing standards.