Dear Colleagues,
One year ago I put together some information regarding this subject; (I have
as well the Bibliography for it).
In my opinion, all the participants at this discussion, made very useful
observations.
Respectfully yours,
Constantin
Constantin Bolintineanu P.Eng.
DIGITAL
...@lexmark.com on 10/31/2001 08:40:17 AM
Please respond to geor...@lexmark.com
To: emc-p...@ieee.org
cc:(bcc: Douglas Beckwith/Kan/Mitel)
Subject: Re: Definition for Safety Critical Component
There are at least two possible definitions of this term. Under the
60950 standards
[mailto:geor...@lexmark.com]
Sent: 31 October 2001 13:40
To: emc-p...@ieee.org
Subject: Re: Definition for Safety Critical Component
There are at least two possible definitions of this term. Under the
60950 standards, these would be the components listed by an approving
agency deemed to be safety
: oover...@lexmark.com [mailto:oover...@lexmark.com]
Sent: 31 October 2001 12:43
To: emc-p...@majordomo.ieee.org
Subject: RE: Definition for Safety Critical Component
Gregg brings up a good point.
I haven't followed all of this thread and I hope I'm not repeating someone
else;
but, just in case
There are at least two possible definitions of this term. Under the
60950 standards, these would be the components listed by an approving
agency deemed to be safety critical. The other is any part, listed
or not, that contributes to the overall safety of the device. For
example, a metal
/Lex/Lexmark)
Subject: RE: Definition for Safety Critical Component
Sorry the change to HTML was necessary to format the table.
Critical Components will including Paint (colour of the product), Labels and
Instructions. There can be no definitive answer - hazards are in the eye of
the beholder
Hi Folks
This is sent separately to my reply regarding IEC 61508 etc., as it
addresses an entirely different issue.
The decision as to what should be classified as a safety critical component
(SCC) in the context of 60950 (etc.) should take into account the overall
construction and use of the
Hi Folks
A few words of warning on the context of the above
Most of the definitions or descriptions for safety critical component
given so far are reasonably accurate and straightforward in the context of
strict compliance with IEC/EN/UL EQUIPMENT safety standards such as 60335,
60950 61010
Definition for Safety Critical ComponentI'll add to Richard's
definition by saying a Safety Critical Component
is a component necessary for the safety approval of the product.
It's a component that prevents a person (end user or service person)
from being exposed to a hazardous condition either
A safety critical component is a component were the failure during normal
use, forseeable misuse and fault conditions is likely to result in a
hazardous condition for the operator and/or service person (includes
maintenance).
Richard Woods
Sensormatic Electronics
-Original Message-
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