小米 发表于 2012-9-19 15:18

DSH 295 Object




http://decisions.iecee.org/icons/ecblank.gifDSH 295
Object
1.2
61010-1(ed.1);am1;am2



Standard:
IEC 61010-1:1990
+A1:1992+A2:1995
Sub clause:
1.2
Sheet n. 295
Page 1(1)
Subject:
Object
Key words:
- Scope
- Software Safety
Decision taken by
ETF3 and confirmed
by CTL at its 38th
meeting, in Toronto
Question:
If safety is dependent on Software, what criteria do laboratories employ to ensure
compliance?
Decision:
Software safety is not specifically addressed in IEC 61010-1 at present and therefore, there
are no specific guidelines for this work. A draft collateral standard is in preparation and also
IEC 61508 deals with this topic.
Generally, it is advised that devices should not be dependent on software alone for their
safety. There should be a separate independent means provided which acts to prevent a
dangerous condition arising.
Explanation:
Experience shows that the analysis of software systems to ensure their safe operation is very
difficult and in practice, can only provide a measure of confidence. Additionally, the
methods of performing the examination are not widely agreed upon and therefore, subject to
doubt. In these circumstances, it is preferred to adopt safety limit methods known from
experience to be effective.



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