to
the
owner
of
the
equipment
so
all
parties
are
advised.
i
nitial
safety
checks
shall
include:
that
capacitors
are
discharged:
this
shall be
done
in
a
safe
manner
to
avoid
possibility
of
sparking;
that
there
no
live
electrical components and wiring are exposed while charging,
recovering or
purging
the
system;
that
there
is
continuity
of
earth
bonding.
Repairs to sealed components.
D
uring repairs to sealed
components, all electrical supplies shall be disconnected from the
equipment being worked upon prior to any removal of sealed
covers, etc. if it is absolutely necessary to have an electrical supply
to equipment during servicing, then a permanently operating
form of leak detection shall be located at the most critical point to
warn of a potentially hazardous situation. 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. T
his
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.
r
eplacement
parts
shall
be
in
accordance
with
the
manufacturer’s
specifications.
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
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