Safety Case

Purpose

The Safety Case records the evidence, arguments and assumptions to verify that the system will meet its Safety Requirements.  It also provides the arguments to support the claim that the system will not affect the safety of the ATS during installation and commissioning.

The Safety Case will be used during the design reviews to provide assurance the System design will be safe to implement and operate.

Derivation and Source Requirements

The Safety Case will be derived primarily from the System Design Definition, Tender Responses.  Where ever possible experience of similar systems will be used to provide historical data.

Composition

The composition of the Safety Case a minimum shall define:

·       System Function

·       Safety Requirements

·       System Description

·       System Operation

·       Design Process

·       Design Dependencies

·       Design Assurance

·       Limitations and Shortcomings

·       Safety Performance Monitoring

·       Installation, Commissioning and Integration

Quality Criteria

Does the Safety Case meet the requirements

Has the Safety Case been developed in accordance with the Safety Management Plan?

Does the Safety Case provide sufficient assurance that the System is safe to implement, maintain and operate?

Quality Method and Skills

In association with the Project’s System Design and Implementation engineers the Safety Case will be developed by specialist engineers working within the Project.

The Safety Case will be subject to peer reviews.

The Safety Case will be submitted to the Chief Engineer for endorsement.