Re: [SystemSafety] Language issues, control systems

From: jean-louis Boulanger < >
Date: Mon, 27 Apr 2015 15:46:08 +0200


It's unusable to generate two difference program if it's not for diverse redundant.
If you want to be able to generate 2 programs in difference language for 2 difference target .... you need to have a double certification. if you have diverse redundancy for safety .... it's well know and manage if you just double the generation to address differente target ... you don't have no new risk but you need to double the safety activities and the associate certification.

SRAC is for the exported constraints in safety-case where you can identify some limites of used .... in this case the SRAC can link to the fact that one generation should be certified and the second not .... perhaps when the 2 chain are certified you can have specific SRAC for specific target .... for example if you generate C and C# perhaps for C# you need to request a certified runtime machine and for C a qualified compiler ....

2015-04-27 11:51 GMT+02:00 M Mencke <menckem_at_xxxxxx

> Dear all,
> I was wondering if anybody has any experience with SIL certifications
> where the final product should be usable in two different languages. For
> example, a centralized control system of any type, SCADA, etc. My question
> is if there are any potential hazards associated with an incorrect
> translation, what would be the best way to go about mitigating them? Would
> it be valid, for example, to use two translators and then cross-check the
> resulting translations, analyzing inconsistencies? The translations would
> be for the commands available on the HMI.
> Really what I am trying to determine is the most common way of dealing
> with this issue during SIL certifications, as there may be more than one.
> That is, can it be considered as part of the generic product (no, I
> suspect), should it be considered as part of the specific application, can
> it be considered a SRAC, should it be dealt with during FAT…..? I work in
> the railway industry, but I imagine that this could be an issue in any
> industry where control systems are used. Thanks in advance.
> Kind regards,
> Myriam.
> _______________________________________________
> The System Safety Mailing List
> systemsafety_at_xxxxxx >

Mr Jean-louis Boulanger

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Received on Mon Apr 27 2015 - 15:46:15 CEST

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