1. Layer of protection analysis–simplified process risk assessment;Center for Chemical Process Safety,2001
2. System reliability theory: models, statistical methods, and application;Rausand,2004
3. International electrotechnical commission. IEC 61511. Functional safety—safety instrumented systems for the process industry sector. Switzerland, Part 1–3; 2004.
4. International electrotechnical commission. IEC 61508. Functional safety of electrical/electronic/programmable electronic safety-related systems. Switzerland, Part 1–7; 2010.
5. Reliability prediction method for safety instrumented systems – PDS method handbook;SINTEF,2009