Global InformationISO 13849 information
ISO 13849 is a safety standard which applies to parts of machinery control systems that are assigned to providing safety functions (called safety-related parts of a control system).[1] The standard is one of a group of sector-specific functional safety standards that were created to tailor the generic system reliability approaches, e.g., IEC 61508, MIL-HDBK-217, MIL-HDBK-338, to the needs of a particular sector. ISO 13849 is simplified for use in the machinery sector.
The standard has two parts:
- ISO 13849-1, Part 1: General principles for design, provides safety requirements and guidance on the principles of design and integration of safety-related parts of control systems (hardware or software).
- ISO 13849-2, Part 2: Validation, specifies the procedures to be followed for validating by analysis or tests, the safety functions of the system, the category achieved and the performance level achieved.[2]
ISO 13849 is designed for use in machinery with high to continuous demand rates. According to IEC 61508, a HIGH demand rate is once or more per year of operation, and a CONTINUOUS demand rate is much, much more frequent than HIGH. For systems with a LOW demand rate, i.e., less than once-per-year, see IEC 61508, or the appropriate sector-specific standard such as IEC 61511.
The standard is developed and maintained by ISO/TC 199, Safety of machinery, Working Group 8 — Safe Control Systems.[3] The scope of ISO 13849 includes control systems using mechanical, electrical, electronic, and fluidic (hydraulic and pneumatic) technologies.
According to an informal stakeholder survey done in 2013, more than 89% of machine builders and more than 90% of component manufacturers and service providers use ISO 13849 as the primary functional safety standard for their products.[4]
- ^ "ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design". International Organization for Standardization (ISO). Retrieved 2022-04-06.
- ^ "ISO 13849-2:2012, Safety of machinery — Safety-related parts of control systems — Part 2: Validation". International Organization for Standardization (ISO). Retrieved 2022-04-06.
- ^ "ISO/TC 199 Safety of machinery". ISO. International Organization for Standardization. 22 January 2019. Retrieved 8 April 2022.
- ^ Outcome of the "Questionnaire" doc. N 964 -- Report from ISO/TC 199/JWG 1/Sub Group 2, ISO/TC 199 N1035, 2013-03-01