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Layer of Protection Analysis (LOPA) conducted by Synthomer resulted in the requirement for a number of Safety Instrumented Functions (SIFs) to be implemented within the existing process plant.
The BPE team needed to ensure that a Safety Instrumented System (SIS), conforming to IEC 61508, capable of functioning within the site prevailing site infrastructure, was designed.
Working with the output from the LOPA, BPE carried out a technology review in order to identify suitable Safety Instrumented Systems (SIS), conforming with the requirements of IEC 61508 with particular regard to IEC 61151, the process implementation of IEC 61508.
Example loop diagrams and Safety Integrity Level (SIL) calculations were completed, along with a project cost estimate to permit capital sanction. BPE were subsequently awarded the implementation phase for the new Safety Instrumented Systems.