Overview
This page contains the Oil SSTS URD and SRD, as described below. During the SSPM course, you will be required to populate the URD and SRD using the information provided.
User Requirements Document (URD)
The purpose of the User Requirement Document is to be an all embracing, structured expression of the user need for a bounded operational capability and is the means by which the customer develops, communicates and maintains the user’s requirement throughout the life of the system. The requirements are refined as more information becomes available into a cascaded set of system requirements captured in the SRD.
The inclusion of safety requirements in a URD should be the principal aspect in ensuring that the risks associated with a system are ALARP. The URD remains a live document until Main Gate. Traceability must be maintained between the URD and subsequent analysis to ensure resulting product can deliver its intended role.
Task Description
Develop as many Safety Requirements as you can (no less than six) using the Scenario, your Block Diagram and the output from the Preliminary Hazard Identification. The URD should be based on your understanding of the requirements, and for each safety requirement:
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- Identify the type of requirement (safety/performance)
- Capture the safety thresholds and targets, and
- Capture any rationale for the requirements
- Capture the means for verification (test, design, inspection, calculation, analysis, etc)
When developing the Oil SSTS URD, consider::
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- Legislative requirements
- Functional requirements
- Physical / design limitations
- Reliability / integrity levels
- Performance etc.
Justification can be in form legislative compliance, standards, best practice, first principles derivation etc.
Oil SSTS URD
