Réf. : RE: [sc] SIL on PCB?



Réf. : RE: [sc] SIL on PCB?

From: Bertrand RICQUE <bertrand.ricque_at_xxxxxx>
Date: Thu, 30 Jul 2009 09:41:07 +0200
Message-ID: <OF2D5DCCEB.92EA6B8C-ONC1257603.0029A6B5-C1257603.0029C5DD@xxxxxx>
Mark,

SIL applies to a safety function, not to a system (although it could be 
discussed when there is only one function in a system).

As you state it, it is a requirement. It is not a property.

Bertrand Ricque
Chef de Programme
SAGEM Défense Sécurité
178, rue de Paris
91344 MASSY
Tel +33 1 69 19 87 42
Mob : +33 6 87 47 84 64
Fax +33 1 69 19 66 48
Email bertrand.ricque@xxxxxx




"Mark Coates" <Mark.Coates@xxxxxx>

Envoyé par : safety-critical-request@xxxxxx
30/07/2009 09:31
Veuillez répondre à safety-critical
Remis le : 30/07/2009 09:36

 
        Pour :  <safety-critical@xxxxxx>
        cc :    (ccc : Bertrand RICQUE/DRD/SAGEM)
        Objet : RE: [sc] SIL on PCB?


Arnie,

SIL is a system property.

It is the level of assurance required that the item represents a 
justifiable level of risk based on issues including the system context in 
which it will be used, the manner it will be installed and maintained, the 
procedures it will be used with, the operators' training and so on. 

It is not a failure rate of a device.

Mark

-----Original Message-----
From: Arne Hansen [mailto:arny.hansen@xxxxxx] 
Sent: 29 July 2009 19:47
To: safety-critical@xxxxxx
Subject: [sc] SIL on PCB?



Dear list members,

 

Do we only talk about SIL for systems, or is it possible to calculate and 
certify SIL for stand-alone units like PCB (printed circuit boards) which 
has a given safety function?

In other words, can all kind of electronic devices be SIL categorized? 

 

#Arnie

_________________________________________________________________
Bruk Windows Live(tm) for å dele minnene dine online med hvem du vil.
http://www.microsoft.com/norge/windows/windowslive/products/photos-share.aspx?tab=1

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________

Visit our web site at www.scottwilson.com

Privilege and Confidentiality Notice.

This e-mail and any attachments to it are intended only for the party to 
whom they are addressed.  They may contain privileged and/or confidential 
information.  If you have received this transmission in error, please 
notify the sender immediately and delete any digital copies and destroy 
any paper copies.

Thank you.

The ultimate parent company of the Scott Wilson Group is Scott Wilson 
Group plc. 
Registered in England No. 5639381
Registered Office: Scott House, Alencon Link, Basingstoke, Hampshire, RG21 
7PP






" Ce courriel et les documents qui y sont attaches peuvent contenir des informations confidentielles. Si vous n'etes  pas le destinataire escompte, merci d'en informer l'expediteur immediatement et de detruire ce courriel  ainsi que tous les documents attaches de votre systeme informatique. Toute divulgation, distribution ou copie du present courriel et des documents attaches sans autorisation prealable de son emetteur est interdite." 

" This e-mail and any attached documents may contain confidential or proprietary information. If you are not the intended recipient, please advise the sender immediately and delete this e-mail and all attached documents from your computer system. Any unauthorised disclosure, distribution or copying hereof is prohibited."
[The content of this part has been removed by the mailing list software]
Received on Thu 30 Jul 2009 - 08:41:14 BST