LST EN 61511-2-2005 Functional safety. Safety instrumented systems for the process industry sector. Part 2: Guidelines for the application of IEC 61511-1 (IEC 61511-2:2003)
2005LST EN 61511-2-2005 Functional safety. Safety instrumented systems for the process industry sector. Part 2: Guidelines for the application of IEC 61511-1 (IEC 61511-2:2003)