SAFETY MANUAL - Tuv-fs.com
SAFETY MANUAL - Tuv-fs.com
SAFETY MANUAL - Tuv-fs.com
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<strong>SAFETY</strong> <strong>MANUAL</strong><br />
4.2.3 Override Requirements Checklist<br />
Description<br />
Reference<br />
Are the effects of overriding fully understood,<br />
particularly where the override action will affect<br />
independent parts of an application<br />
Has a method of enabling, or more importantly<br />
removing, the overrides for the system as<br />
whole, or individual sub-systems, been<br />
provided<br />
Have programming or procedural measures<br />
been defined to ensure that no more than a<br />
single override may be applied to a given safetyrelated<br />
process unit<br />
Have indication of the presence of override<br />
conditions and recording their application and<br />
removal been defined<br />
Is there an alternative method of removing an<br />
override<br />
Are there programming or procedural measures<br />
to limit the period of override<br />
3.9<br />
3.9<br />
3.9<br />
3.9<br />
3.9<br />
3.9<br />
Doc Number P8094<br />
Issue 14 September 2003 Page 77 of 67
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