Everyone who deals with flammable or explosive substances, on site or during design, will have to deal with them sooner or later. But these topics are not as fresh in everyone's mind, so a refresher is needed from time to time.
Anyone who has to deal with flammable or explosive substances, either on site or during design, will have to deal with them sooner or later. But not everyone's memory of these topics is as fresh, so a refresher is needed from time to time. If you do not have IEC 61511 at hand right now, Automatie | PMA has done us a great favour by publishing a jargon-free summary.
And how do you calculate 'reliability' (the 'SIL value')?
That is the subject of part 2
Recommended!
