[SystemSafety] SIL ratings to be scrapped?

[Dominey, Alan (UK)]

I think there may have been a misunderstanding somewhere along the way here.

UK MoD implemented the use of SILs into many of their projects a few years ago and these are now being replaced by
SIRs  -  Safety Integrity Requirements  ( High / Medium / Low) . . .  Don't know if this is a pointer in any direction . . .

        Many Thanks
        Regards
        Alan
        Alan G. Dominey
        Electrical Safety Engineer
        Torpedo Capability Contract Project Surveillance Manager
        Spearfish Safety Group

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From: systemsafety-bounces at lists.techfak.uni-bielefeld.de [mailto:systemsafety-bounces at lists.techfak.uni-bielefeld.de] On Behalf Of Chris Hills
Sent: 21 August 2013 15:26
To: 'Bielefield Safety List'
Subject: [SystemSafety] SIL ratings to be scrapped?


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Hi all,

I have just been taking to one of my customers who do control systems for industrial systems.  They have been told by someone they are doing a system for that SIL ratings will "soon be scrapped".    Apparently "It will be replaced by ALARP".  This seems like a completely misunderstood half a message.   Though usually on this sort of thing there is a grain of reality (if miss reported or miss represented) in there somewhere.

I know I have not been paying attention over the summer but I haven't seen anything. Is  there a move on any standard to change from SIL ratings for projects?


Regards
     Chris

Eur Ing Chris Hills BSc CEng MIET MBCS FRGS FRSA Technical Specialist
Phaedrus Systems Ltd Tel:  FREEphone 0808 1800 358
Vat GB860621831  Co Reg #04120771
Http://www.phaedsys.com<http://www.phaedsys.com/> chills at phaedsys.com<mailto:chills at phaedsys.com>


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