v4rev 12018-03-20IEC 61508-2
safe failure fraction
0112/2///61987#ABB192
fraction of the overall random hardware failure rate of a device that results in either a safe failure or a detected dangerous failure
- Used by classes
- 2
- Code
ABB192- Data type
- REAL_MEASURE_TYPEmeasure
- Unit
- UAA000 UAA000
All properties31#
- Version
- 4
- Revision
- 1
- Preferred name
- safe failure fraction
- Definition
- fraction of the overall random hardware failure rate of a device that results in either a safe failure or a detected dangerous failure
- Definition source
- IEC 61508-2
- Note
- That is the ratio of the average rate of safe failures plus dangerous detected failures of the subsystem to the total average failure rate of the subsystem
- Definition class
- 0112/2///61987#ABA000Equipment for industrial-process automation
- Unit structure
- %
- Initial value
- 0112/2///62720#UAA000 UAA000
- Responsible committee
- SC65E – IEC 61987
- Published in
- NON_DEPENDENT_P_DET
- Status level
- Standard
- Version release date
- 2018-03-28
- Revision release date
- 2018-03-20
- Version initiation date
- 2018-03-20
- Original definition date
- 2013-09-27
- Change request ID
- C00004
- C017
- C018
- C019
- MDC_P022
- REAL_MEASURE_TYPE