FSA of gas lift HIPS modifications on North Sea platform

MAR Consulting performed a functional safety assessment (FSA) of a modification project in a North Sea platform. The modification consisted of changes to the high integrity (pressure) protection system (HIPS) and emergency shutdown system (ESD), due to re-routing of gas lift and export pipelines. Safety instrumented functions (SIFs) were modified in the mentioned safety instrumented systems (SIS).

The scope of the FSA stage 1 was to validate the initial phases of the project safety lifecycle as per IEC61511.  Namely, phase 1 to 3 (from hazard analysis to initial safety requirements specification) and phase 9 to 11 related to soft requirements to reduce the probability of systematic failures.

The outcome was a number of recommendations and findings required to be addressed as the project progresses. These will be re-assessed in the next stage of the project, together with the design and engineering; and commissioning and installation of the SIFs.


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