IEC 61508
IEC/TR 61508-0 ed1.0 (2005-01) Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 0: Functional safety and IEC 61508
IEC 61508-1 ed2.0 (2010-04) Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements
IEC 61508-2 ed2.0 (2010-04) Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 2: Requirements for electrical/electronic/programmable electronic safety-related systems
IEC 61508-3 ed2.0 (2010-04) Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements
IEC 61508-4 ed2.