Archives For safety myths

Over on the RVS Bielefield site Peter Ladkin has just put up a white paper  entitled 61508 Weaknesses and Anomalies which looks at the problems with the current version of the IEC 61508 functional safety standard, part 6 of which sits on my desk even as we speak. Comments are welcome.

For my own contributions to the commentary on IEC 61508 see Buncefield the alternate view , Component SIL rating memes and SILs and Safety Myths.

I was thinking about how the dubious concept of ‘safety integrity levels’ continues to persist in spite of protracted criticism. in essence if the flaws in the concept of SILs are so obvious why they still persist?

Continue Reading…