Safety Measures for Temporary
Electrical Wiring
HAZARDOUS AREA CLASSIFICATION PART 4
Safety Measures for Temporary
Electrical Wiring
Temporary Electrical Wiring is made
especially in the start of the construction and for a temporary electrical
power requirement. As these having many hazards associated with it, the
following measures to be ensured.
i) All the Temporary electrical
wiring is to be authorized with Permit to Work, it is permitted only during the
period of construction, remodeling, maintenance, repair, demolition and similar
activities. It shall be removed immediately upon completion of the purpose for
which the wiring was installed.
ii) The temporary electrical wiring
shall be installed in such a manner that it is not subjected to physical
damage. The wiring to be protected from mechanical damage and any other form of
damage. The live wiring core should not exposed at any cost. The sharp corners and projections should be avoided
while laying the cable. The wiring shall be adequately protected while passing
through the door ways or other pinch points.
iii) The metallic case of temporary
lighting & Lighting Distribution Board (DB)s to be separately earthed in
two places.
iv) Proper marking to be done. Precaution
to be taken so that temporary electrical cable laying at worksite should not
interfere with normal Human and Equipment & machineries movement creating
hazards like electrocution, electrical fire, Slip/ Trip/ Fall etc.
v) Earth Leakage Protection - All
hand-held tools (eg hand held drill machine, hand held grinder etc) shall be protected
through 30mA earth fault protection (RCBO etc) with 200 milli Seconds fault
clearance time and Overcurrent setting as per Equipment requirement.
SAFETY DURING DEMOLITION / DISMANTLING
vi) All Portable equipment/ tools
which are not hand held (like submersible pumps, dewatering pump, 415V &
240V welding set etc.) shall be protected through 100mA earth fault protection
(RCBO etc) with 100 milli Seconds fault clearance time and Overcurrent setting
as per Equipment requirement.
vii) Ensure Periodic checking of
RCBO by trip test
viii) Earth leakage protection is
not compulsory for double insulated tools, but its suggested to provide the
same.
No comments:
Post a Comment