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Knowledge

Welcome to our knowledge section. Please use this section to educate yourself about Functional Safety. You will find here forum posts and a functional safety glossary with terms and definitions related to functional safety.

Latest forum posts

Subject Message
LOPA combination 2 SIF's in a SIS layer
Petra Verhulst 28.3.2013 5:37		 When we got 2 SIF\'s in a SIS layer to protective a high pressure in a tank. For example: First SIF is a SIL 2 loop (instrumental protection) and second SIF is also a SIL 2 loop (instrumental prot...
Proof test
Angelo Galli 25.3.2013 6:41		 Dear All, I have a question regarding periodic proof test required by the Standard IEC 61511. In particular about a proof test of a valve. It is possible monitor the movement of a process val...
Difference between Maintenance Overr...
Kashif Channar 26.6.2012 10:03		 I would like to know about the key difference between process override and maintenance override. For example, one transmitter has some problem and maintenance team wants to work on that transmi...
Re: EN 62061 / Annex F CCF / "tempor...
Howard Wheeler 16.5.2012 8:56		 David Collier of Pilz (on LinkedIn) has provided me with what I think is perhaps the most useful answer so I\'ve re posted it here for information David Collier • Howard, temporal monitoring (s...
Re: 3oo4 PFD calculation
Pero Juric 15.3.2012 11:00		 Try as 6 X 1oo2, but increase BetaCC_3oo4 = 4 X BetaCC_1oo2 Shouldn\'t be a problem

Latest glossary items

Term Definition
VHDL Very High Speed Integrated Circuit Hardware Description Language
SIL Safety Integrity Level
SFF Safe Failure Fraction
ROM Read-Only Memory
RAM Random Access Memory