Electrical hazards
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The document discusses electrical hazards. It defines electrical hazards as any potential or actual threat due to electricity to the well-being of people, machinery, or the environment. It lists types of electrical hazards such as electric shock, burns, and arc blasts. It provides examples of workplace electrical hazards like damaged power lines, exposed conductors, and improper grounding. It also discusses sources of electrical hazards such as working with unearthed or improperly grounded electrical equipment.
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3. Electric shock occurs when a person becomes part of an electrical circuit, with current entering and leaving the body. The severity of shock depends on current amount, path through the body, and time in the circuit. Effects range from tingling to cardiac arrest.
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The document discusses faults that occur in power systems. It defines electrical faults as abnormal conditions caused by equipment failures, human errors, or environmental conditions. There are two main types of faults: symmetrical faults, which are rare but severe, and unsymmetrical faults, which are more common and less severe. Unsymmetrical faults include line to ground, double line to ground, and line to line faults. Faults can be caused by weather, equipment failures, human errors, or fires and can result in overcurrent, danger to personnel, loss of equipment, and electrical fires. Proper protection devices are needed to detect and isolate faults to maintain reliability and prevent damage.
Faults on Power System
Electrical fault is the deviation of voltages and currents from nominal values or states. Under normal operating conditions, power system equipment or lines carry normal voltages and currents which results in a safer operation of the system.
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This document discusses fire and electrical hazards in industrial plants. It defines fire and explains the three factors required for combustion. Electrical hazards are also defined, including how shocks occur through direct or indirect contact with energized circuits. The document outlines different types of electrical circuits and provides tips to prevent hazards, such as grounding equipment, inspecting for defects, and using insulated tools. Fire hazards are controlled through plant layout, isolation of operations, fire-resistant construction, and installation of alarms and extinguishing equipment.
Electrical Safety and Risk Assessments
This document provides an overview of electrical safety and risk assessment. It discusses common electrical hazards like electric shock, burns, fires and explosions. The key causes of electrical accidents are identified as drilling into electrical cables, using defective equipment, and failure to follow lockout/tagout procedures. Electrical safety measures discussed include proper wiring, use of circuit breakers and disconnects, guarding live parts, adequate illumination and headroom, and grounding/bonding principles. Personal protective equipment and safety signage are also addressed.
Electrical
An average of one worker is electrocuted on the job every day due to electrical hazards. The document outlines various electrical hazards like inadequate wiring, exposed live parts, overloaded circuits, and damaged tools. It explains key electrical terms and safety requirements from OSHA like proper grounding, using GFCIs and circuit breakers, guarding live parts, permissible uses of flexible cords, training workers, and more to prevent electrocutions, shocks and burns. Violating these safety measures can result in injury or death from electrical accidents.
Electrical
An average of one worker is electrocuted on the job every day due to electrical hazards. The document outlines various electrical hazards like inadequate wiring, exposed live parts, overloaded circuits, and damaged tools. It explains key electrical concepts and safety requirements to prevent electrocution, shock, burns and falls from shocks. Employers must provide training and protective equipment to workers and properly install, ground, fuse and maintain electrical systems.
Electrical pptgi
An average of one worker is electrocuted on the job every day due to electrical hazards. The document outlines various electrical hazards like inadequate wiring, exposed live parts, overloaded circuits, and damaged tools. It explains key electrical concepts and safety requirements to prevent electrocution, shock, burns and falls from shocks. These include proper grounding, using GFCIs and circuit breakers, guarding live parts, restricting flexible cord use, closing unused openings, and training workers on electrical safety practices.
Electrical shock.ppt
Electrical safety is paramount when working with electricity. Proper lockout/tagout procedures must be followed to de-energize equipment before inspection or repair. Electrical shock can occur when a person provides a path for current to flow through their body, and even small currents above 8mA can be dangerous. It is not the voltage but the current that determines the severity of shock. Following safe work practices like using GFCIs, proper grounding and wiring, insulating tools, and wearing PPE can help prevent electrical injuries and fatalities. Planning, inspection, and training are also critical aspects of electrical safety.
Electrical Safety.ppt
This document discusses electrical safety hazards and prevention methods. The primary hazards of electricity are electric shock, fire, explosion, flash and burns. Secondary hazards include falls, dropping objects, and toxic gas exposure. Electric shock occurs when a current passes through the body, with severity depending on current duration, amount and path. Body resistance varies based on conditions like dry vs. wet skin. Shock protection methods include isolation, current limitation, low voltage systems, double insulation, and proper earthing. Maintenance, insulation failures, overloading and moisture can all cause electric fires. Burns can result from electric flashes or heat. Safety measures include proper cable routing and joints, use of earth leakage circuit breakers, 24V hand lamps, qualified personnel,
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The issues of electrical hazards at site and steps to prevent.
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Electrical hazards
- 1. Electrical Hazards Group Members: Syed Ehtisham Gillani 09PWMEC2904 Imran Ullah Khan 09PWMEC2879 Irfan Ullah 09PWMEC2863 Qasim Mehmood Ahmad 09PWMEC2884
- 2. ELECTRICAL HAZARDS DEFINITION 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
- 3. Examples of Workplace Electrical Hazards Power lines Damaged receptacles Exposed conductors Extension wires Improper grounding Broken bulbs
- 4. Sources of Electrical Hazards. Electrical hazards Working with electrical equipment lacking UL label Electrical equipments that has not been properly grounded Working 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.
- 5. Examples of Sources of Electrical Hazards
- 6. Electrical hazards to humans • Current flow • Let go current • Freeze • Skin resistance • Severity of current
- 7. Detection of electrical hazards • Circuit tester • Receptacle wiring tester • Continuity tester
- 8. Reducing Electrical Hazards • GROUNDING o Electrical System Grounding o Separate Equipment Grounding o GROUND FAULT INTERRUPTER • IONIZERS AND ELECTROSTATIC NEUTRALIZERS • FUSES • CIRCUIT BREAKERS • DOUBLE INSULATION • WARMING DEVICES