The fundamental element of the Project Safety Review (PSR) is the Safety Submission, which requires the contractor to demonstrate "proof of safety" at each stage of the project. Safety Submissions are made at key milestones of each project, which includes the:
- Concept Safety Submission
- Demonstrates that the system concept is sound and has no unacceptable impact on safety. It also shows that all safety requirements of the systems have been clearly and adequately specified in the contracts.
- Design Safety Submission
- Demonstrates that the safety requirements have been met and the identified hazards have been addressed in the design stage as far as reasonably practicable to achieve the level of safety intended at the concept stage and subsequent approved modifications at the design stage.
- Handover Safety Submission
- Demonstrates that the system has been successfully tested and commissioned to achieve the level of safety intended at the concept stage and subsequent approved modifications at the design and installation stages. It also shows that the system can be considered safe for the commencement of trials and subsequent revenue service.
- Operation Safety Submission
- Demonstrates that the Rapid Transit System (RTS) operator has the appropriate organisational structure and processes in place to operate and maintain the RTS system safely.
After a project is opened for revenue service, an Operation Safety Submission Follow-up Audit will be conducted to check if the RTS operator has operated and maintained the systems in accordance to the procedures and work instructions needed for hazard mitigation.