electrical hazards

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Electrical Hazards Group Members: Syed Ehtisham Gillani 09PWMEC2904 Imran Ullah Khan 09PWMEC2879 Irfan Ullah 09PWMEC2863 Qasim Mehmood Ahmad 09PWMEC2884

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Page 1: Electrical hazards

Electrical Hazards Group Members:

Syed Ehtisham Gillani 09PWMEC2904 Imran Ullah Khan 09PWMEC2879Irfan Ullah 09PWMEC2863Qasim Mehmood Ahmad 09PWMEC2884

Page 2: Electrical hazards

ELECTRICAL HAZARDSDEFINITION

Any potential or actual threat due to electricity to the wellbeing of people, machinery or environment.TYPES OF ELECTRICAL HAZARDS:

• ELECTRIC SHOCK Results in Electrocution, falls or movement into machinery• BURNS Results in burning of body and organs. •ARC BLASTS Results in electrocution and other body injuries

Page 3: Electrical hazards

Examples of Workplace Electrical Hazards

Power lines Damaged receptacles

Exposed conductors

Extension wires Improper grounding

Broken bulbs

Page 4: Electrical hazards

Sources of Electrical Hazards. Electrical hazardsWorking with electrical equipment lacking UL labelElectrical equipments that has not been properly groundedWorking with electrical equipment on damp floors Improper wiring Insulation failure Electrostatic hazards: Uncontrolled static electricity is responsible for a large number of serious industrial fires

and explosions every year Lightning hazards : Lightning has the ability to create forest fires as well as local and large scale power

outages that can be damaging to communication systems and electrical systems including computers.

Page 5: Electrical hazards

Examples of Sources of Electrical Hazards

Page 6: Electrical hazards

Electrical hazards to humans

• Current flow • Let go current• Freeze• Skin resistance• Severity of current

Page 7: Electrical hazards

Detection of electrical hazards

• Circuit tester

• Receptacle wiring tester • Continuity tester

Page 8: Electrical hazards

Reducing Electrical Hazards• GROUNDING

o Electrical System Groundingo Separate Equipment Groundingo GROUND FAULT INTERRUPTER

• IONIZERS AND ELECTROSTATIC NEUTRALIZERS• FUSES• CIRCUIT BREAKERS• DOUBLE INSULATION• WARMING DEVICES

Page 9: Electrical hazards