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equipment. Intrinsically safe components do not have
to be isolated prior to working on them.
8. Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance
loads to the circuit without ensuring that this will
not exceed the permissible voltage and current
permitted for the equipment in use. Intrinsically safe
components are the only types that can be worked on
while live in the presence of a flammable atmosphere.
The test apparatus shall be at the correct rating.
Replace components only with parts specified by the
manufacturer. Other parts may result in the ignition
of refrigerant in the atmosphere from a leak.
9. Cabling
Check that cabling will not be subject to wear,
corrosion, excessive pressure, vibration, sharp edges
or any other adverse environmental effects. The
check shall also take into account the effects of
aging or continual vibration from sources such as
compressors or fans.
10. Detection of flammable refrigerants
Under no circumstances shall potential sources of
ignition be used in the searching for or detection of
refrigerant leaks. A halide torch (or any other detector
using a naked flame) shall not be used.
11. Leak detection methods
The following leak detection methods are deemed
acceptable for systems containing flammable
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