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PRESENTATION ON
SAFETY IN TEMPORARY
ELECTRICAL
INSTALLATIONS
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A FAMOUS SAY ON ELECTRICITY
ELECTRICITY IS A GOOD SERVANT
BUTIT IS A BAD MASTER .
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What is Elec tr ici ty?
T h e Flow of elec tr ons f rom one at om to
ano th e r at om is c a lled elec tr ici ty.
What is cu rr en t?
R at e of flow of elec tr ici ty is c a lled cu rr en t.
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TYPES OF CURRENTS
AC -- ALTERNATING CURRENT.DC -- DIRECT CURRENT.
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ELECTRICAL PROTECTIVE
DEVICES1 . Fuses2. Relays
a) Earth fault relayb) Over current relayc) Under / Over voltage relayd) Bucholtz relay.
3. Circuit Breakers4. Lightning Arrestors5. Earthings
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Need for temporary Electrical
InstallationUsed for rescue operationsUsed for salvaging activities
Used in accident spotsUsed for testing purposeUsed in construction sites
Normally not used for production activityUsed for short duration
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Types of Temporary Electrical
Installations
1 . Indoor
2 . Out-door
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Safety Precautions to be taken
At Indoor sitesUse only quality materials, equipments and accessories.Engage only qualified techniciansEnsure the parameters are not exceeded.
Maintain constant supervisionMaintain the area neat, clean and well ventilated and noobstructions.Keep sufficient No. Fire Extinguishers ( DCP, CO2 ) toextinguish electrical fire.Erect the electrical equipments properlyEnsure there is no toxic/ explosive gases are present atthe work spot.
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Display caution boards.
Obtain necessary work permits.Ensure proper earthing is done.Carry out meggar test before energizing any
electrical equipment.Restrict unauthorised entry.Use PPEs as requiredProvide adequate lightingRemove the temporary facilities once the job iscompleted and close the work permits.
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Safety Precautions to be taken At out-door sitesIn addition to all the above precautionsensure the following additional precautionsare taken.Provide waterproof shelter for the electricalappliances.Keep sufficient No. Fire Extinguishers ( DCP,CO2 ) to extinguish electrical fire.Cordon off the area to restrict unauthorised
entry of the public.protect the wires, cables from mechanicaldamage and from changing weather conditions
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At out-door sites
Ensure the equipments, wiring do notsubmerge in to water Use PPEs as requiredObtain necessary work permits and alsostatutory approvals if required.Use Safety belts when working on heights.Ensure the First-Aid box is available.Take the help of police, local administration onneed basisRemove the temporary facilities once the job iscompleted and close the work permits.
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Last but not the leastAccidents do not happen. They areCaused
Let us not make electricity our MASTER
Let us make it our SERVANT
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