Surface Safety Systems Verification for Offshore Production Platforms

Interact is conducting an independent, third party audit of the piping and instrument drawings (P&ID’s), safety system device installation and shutdown logic for a major offshore oil and gas operator on the West Coast of the United Sates.  Emphasis of the project is to provide an updated set of P&ID’s to document the location of all safety devices and Safety Analysis Function Evaluation (SAFE) charts to verify the design logic of all the safety systems.

The verification process is being performed by Interact engineers on eleven offshore platforms and three onshore processing facilities in response to the Workplace Safety Rule issued by the Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE).  The new mandatory rule, based on the previously voluntary practices outlined in API RP 75, requires all offshore oil and gas operators to develop and maintain a Safety and Environmental System (SEMS).  The Interact audit is focusing on 2 of the 13 elements of the Workplace Safety Rule:

  • Safety and Environmental Information-Facility process flow diagrams, mechanical components such as piping and instrument diagrams
  • Hazard Analysis – Facility level risk analysis based on SAFE charts

The P&ID verification process requires tracing each process oil and gas line from the wellhead to the pipeline leaving the platform, locating safety devices, process control components and verifying maximum allowable working pressures (MAWP) for equipment and piping systems.  Once the P&ID’s are completed the Interact engineers update the SAFE charts to relate all sensing devices, SDV’s, shutdown devices and emergency support systems to their functions.  The SAFE chart logic and reasons for eliminating a safety device are defined in API RP 14C, Recommended Practice for Analysis, Design, Installation and Testing of Basic Surface Safety Systems for Offshore Production Systems.

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