Concept > FEED > Detailed Design
Project Phases
220 weeks
Project Duration
9367
Hours of Engineering
Context
InSite Technical Services supported a UK oil refinery in upgrading its Safety Instrumented Systems (SIS) to meet critical instrument standards, ensuring a compliant and robust functional safety solution
Challenge
An oil refinery in the United Kingdom required support to upgrade existing Safety Instrumented Systems (SIS) to ensure full compliance with critical instrument standards, including BS EN 61511. The project spanned multiple phases, from concept and FEED through to detailed design, requiring expertise in functional safety to achieve regulatory compliance.
Solution
InSite assembled a multi-discipline team to execute the functional safety engineering scope supporting all project phases, from concept and FEED through to detailed design. The team ensured the design adhered to the Safety Regulation Specification and Functional Safety Requirements Specification, achieving the required SIL requirements and Risk Reduction Factor targets. Deliverables included an FSMP, SRS, safety PLC code, impact assessment, SIL verification calculations, test procedures, maintenance proof test procedures, and functional safety assessments, resulting in a system that met the customer’s SIL and STR requirements.








