LOPA and Safety Integrity Level (SIL) determination can seem complex, especially for teams without in-house expertise in functional safety. Yet compliance with international standards like IEC 61511 and IEC 61508 is critical for ensuring safe and reliable operations in high-risk industries.
At OTECSA, we simplify the SIL determination process—bringing structure, clarity, and compliance to your projects. Our experienced consultants guide your team through Safety Instrumented System (SIS) design, verification, and analysis, ensuring all aspects of the functional safety lifecycle are met.
Why LOPA SIL Determination Matters
SIL assessment plays a key role in:
- Evaluating the performance and reliability of safety systems
- Ensuring compliance with global functional safety standards
- Reducing the risk of hazardous events
It typically involves methods such as Layer of Protection Analysis (LOPA), which require expert facilitation to ensure consistency and regulatory alignment.
For additional context, the UK HSE provides guidance on functional safety. Additionally, IChemE offers valuable resources on LOPA.
OTECSA Support on LOPA
OTECSA offers comprehensive support with LOPA studies, providing trained LOPA facilitators to take your HAZOP output and ensure instrumentation for high severity events are correctly defined. Our LOPA process ensures the reliability of these trips is accurately defined, with any sensitivities well understood.
As well as carrying out the LOPA, our team is experienced in providing insight into additional risk reduction measures and improvements in design that can be implemented to aid compliance.
Comprehensive SIL determination Services
Our SIL services include:
- Leading or facilitating LOPA and SIL workshops
- Supporting hazard identification and risk assessment
- Assisting in SIS design and lifecycle documentation at the early stages
- Delivering in-person or remote training sessions on the fundamentals of LOPA
We make SIL determination accessible and manageable—empowering your team with both expert-led studies and skill-building education.
Ready to Strengthen Your Safety Systems?
Whether you’re designing a new facility or improving existing processes, our support ensures your SIL determination is compliant, clear, and complete.
Contact Us to learn more about our services and upcoming training courses.
We are always happy to have our proposals compared with other suppliers of LOPA services and are certain due to our strength in numbers and experience we can be competitive on cost and delivery for any project.
This includes other suppliers including: DEKRA, Gexcon, TUV, ABB, Risktec, Arthian, Mabbett, Method, Sigma HSE and IDEA Integro Design Engineering Associates.