IEC 61508 Edition 2

​Work on updating IEC 61508 is complete; Edition 2 is now available and may be purchased from BSI

Functional Safety Standards Development

International functional safety standards are under continuous development and maintenance and are revised periodically. The 61508 Association is a member of the BSI subcommittee GEL/65/1 and contributes to the revisions of many of these standards.

BSI Sub-Committee GEL/65/1

Terms of reference:

Under the direction of GEL/65 to:

1. Prepare, revise or amend British standards relating to the operation of systems considered as a whole and for the compatibility of main elements of the systems, including interface characteristics, programmable control systems for industrial-processes, evaluation of systems and safe software.

2. Prepare, revise or amend British standards establishing terms and definitions related to systems, elements and their functions.

3. To participate in any corresponding international work and advise the British Electrotechnical Committee on such work.

GEL/65/1 shadows IEC SC 65A whose scope is:

To prepare standards regarding the generic aspects of systems used in industrial-process measurement and control: operational conditions (including EMC), methodology for the assessment of systems, functional safety, etc.

IEC SC 65A also has a Safety Pilot Function for:

Functional safety of electrical/electronic/programmable electronic systems (which would encompass safety-related software). The Secretariat of IEC SC 65A is currently held by the UK.

The standards coming within the responsibility area of IEC SC/65/A are:

BS EN 61069-4:1998
Industrial-process measurement and control. Evaluation of system properties for the purpose of system assessment. Assessment of system performance

BS EN 61069-5:1995
Industrial-process measurement and control. Evaluation of system properties for the purpose of system assessment. Assessment of system dependability

BS EN 61069-6:1998
Industrial-process measurement and control. Evaluation of system properties for the purpose of system assessment. Assessment of system operability

BS EN 61069-7:1999
Industrial-process measurement and control. Evaluation of system properties for the purpose of system assessment. Assessment of system safety

BS EN 61069-8:1999
Industrial-process measurement and control. Evaluation of system properties for the purpose of system assessment. Assessment of non-task related system properties

BS EN 61326:1998
Electrical equipment for measurement, control and laboratory use. EMC requirements

BS EN 61508-1:2010
Functional safety of electrical/electronic/programmable electronic safety-related systems. General requirements

BS EN 61508-2:2010
Functional safety of electrical/electronic/programmable electronic safety-related systems. Requirements for electrical/electronic/programmable electronic safety-related systems

BS EN 61508-3:2010
Functional safety of electrical/electronic/programmable electronic safety-related systems. Software requirements

BS EN 61508-4:2010
Functional safety of electrical/electronic/programmable electronic safety-related systems. Definitions and abbreviations

BS EN 61508-5:2010
Functional safety of electrical/electronic/programmable electronic safety-related systems. Examples of methods for the determination of safety integrity levels

BS EN 61508-6:2002
Functional safety of electrical/electronic/programmable electronic safety-related systems. Guidelines on the application of IEC 61508-2 and IEC 61508-3

BS EN 61508-7:2010
Functional safety of electrical/electronic/programmable electronic safety-related systems. Overview of techniques and measures

BS EN 61512-1:1999
Batch control. Models and terminology

BS EN 61512-2:2002
Batch control. Data structures and guidelines for languages

BS IEC 61511-1:2003
Functional safety. Safety instrumented systems for the process industry sector. Framework, definitions, system, hardware and software requirements

BS IEC 61511-2:2003
Functional safety. Safety instrumented systems for the process industry sector. Guidelines for the application of BS IEC 61511-1

BS IEC 61511-3:2003
Functional safety. Safety instrumented systems for the process industry sector. Guidance for the determination of the required safety integrity levels

PD IEC/TR 61508-0:2005
Functional safety of electrical/electronic/programmable electronic safety-related systems – Part 0: Functional safety and IEC 61508

PD ROBT-004:2002
EC Directives, functional safety and the role of CENELEC standardization

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