LATEST NEWS

White papers:

February 2017 - Safety framework selection.

January 2017 - Systematic faults and failure models.

Standardisation:

March 2017 - WG20 has the utmost difficulties to bridge security and safety. Between diverging interests of stakeholders and topic complexity, the result might be somewhat decieving.

January 2017 - Official launching of edition 3 of IEC 61508. National comments are being gathered.

December 2016 - There will be no french version of IEC 61511 edition 2. Not enough french experts for the job.

November 2016 - Publication of IEC61703. At end, good mathematical formulas and clear definitions. Still nothing for PFDavg outside annex I of ISO12489. TC 56 (dependability) has still problems with TC65 definitions. Or maybe it's the opposite.

Training:

August 2016 - two new sessions :

* SAF 108 : a three day session for engineers (MSc) to understand the complete concept including relationships with accidentology.

* SAF 109: a one day session for the persons involved in safety objectives definition and preliminary risk analysis.

On-going discussions on forums :

Safety Instrumented Systems on LinkedIn :

• Can you distinguish "Critical Failures" from "Degraded Failures"?
• PFD relationship to test interval

Inside Functional Safety on LinkedIn :

• SFF

SIL3 on LinkedIn :

• We have to get TUV Certification for 2 HIPPS loop, With 3rd Party we got SIL3 verification report.
• Please suggest software tool to perform SIL verification using FTA (Fault Tree Analysis).
• SIS Architecture
• Can you use a safety PLC for two IPL's for the same hazard 

SIL on LinkedIn :

• SIL Segregation in IO Loading
• Are HFT and architectural constrainsts of IEC61508 and IEC61511 impossible to apply?
• Most HIPPS are assessed as SIL 3, some are SIL 2. The question is, if a HIPPS is SIL 1, is it still a HIPPS?
• What PFD should be assumed for logic solver SIL4?