GB/T 20438.2 Functional safety of electrical/electronic/programmable electronic safety-related systems—Part 2:Requirements for electrical/electronic/programmable electronic safety-related systems
GB/T 20438.3 Functional safety of electrical/electronic/programmable electronic safety-related systems Part 3: Software requirements*, 2018-07-01 Update
GB/T 20438.1-2017 history
2017GB/T 20438.1-2017 Functional safety of electrical/electronic/programmable electronic safety-related systems—Part 1: General requirements
2006GB/T 20438.1-2006 Functional safety of electrical/ electronic/ programmable electronic safetyrelated systems. Part 1: General requirements