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A12C
during servicing, then a permanently operating form of leak
detection shall be located at the most critical point to warm of a
potentially hazardous situation.
2.2 Particular attention shall be paid to the following to ensure
that by working on electrical components, the casing is not
altered in such a way that the level of protection is affected.
This shall include damage to cables, excessive number of
connections, terminals not made to original specification,
damage to seals, incorrect fitting of glands, etc.
Ensure that apparatus is mounted securely. Ensure that seals or
sealing materials have not degraded such that they no
longer serve the purpose of preventing the ingress of flammable
atmospheres. Replacement parts shall be in accordance with the
manufacturer's specifications.
NOTE: The use of silicon sealant may inhibit the effectiveness of
some types of leak detection equipment. intrinsically safe
components do not have to be isolated prior
to working on them.
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