Talk:IEC 61508

Jargon seems ok to me it is accrurate and correct terminology.

Are we sure the demand mode classification is correct? I'm reading a spec sheet for a stop button classifying low demand sil 2 as 10-6 to 10-7 — Preceding unsigned comment added by 203.38.70.140 (talk) 21:03, 15 April 2014 (UTC)

TERMS

What does E/E/PES mean? provide link or define. Garykempen (talk) 20:20, 30 July 2010 (UTC)

It's in the first line "electrical/electronic/programmable electronic".--InstEng (talk) 11:31, 31 July 2010 (UTC)

Avionics

What about RTCA/DO-178? DO-178B — Preceding unsigned comment added by 199.46.198.232 (talk) 19:13, 5 June 2013 (UTC)

Histoty of this ISO standard ?

From where is this standard born ? A bit of history ?

--AXRL (talk) 16:34, 27 July 2014 (UTC)

I am planning to write. Here is one source:

• Bell, Ron (2010-11-29). "Introduction and Revision of IEC 61508". Advances in Systems Safety. London: Springer London. doi:10.1007/978-0-85729-133-2_16. ISBN 978-0-85729-132-5.

Dimawik (talk) 07:19, 15 November 2023 (UTC)

Categories of likelihood of occurrence

I doubt if the description of the occurrence matches the displayed frequencies. "Occasional: Once in system lifetime: 10^−4 to 10^−5" How is one in ten thousand per year equal to once in a system life time? I'd say a system lifetime is in the order of magnitude of 20 years. Once in its lifetime would thus give a frequency of 1/20 per year -> 10^-1 to 10^-2 193.67.17.36 (talk) 13:20, 22 June 2016 (UTC)