Functional Safety and the IEC

IEC 61508

Functional Safety

Functional Safety and IEC 61508

Systems comprised of electrical and/or electronic elements have been used for many years to perform safety functions in most application sectors. Computer-based systems (generically referred to as programmable electronic systems) are being used in all application sectors to perform non-safety functions and, increasingly, to perform safety functions.


Functional safety is a concept applicable across all industry sectors. It is fundamental to the enabling of complex technology used for safety-related systems. It provides the assurance that the safety-related systems will offer the necessary risk reduction required to achieve safety for the equipment.


The oil and gas industry, nuclear plants and the machinery sector, to name but a few, all rely heavily on functional safety to achieve safety for the equipment giving rise to the hazards.


All IEC International Standards in the IEC 61508 series were developed by IEC SC (Subcommittee) 65 A: Industrial-process measurement, control and automation - Systems aspects.


IEC 61508:2010 CMV

  • Functional safety as IEC 61508 Commented version
  • IEC 61508:2010 CMV contains commented redline version and the seven-part official standard
  • Redline version shows all changes from ed1.0
  • Major changes commented by leading expert
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