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Advice for Newcomers E lectrical hazards GeePs

Learn about electricity, types of electrical hazards (shock, burns, fire), preventive measures, and good practices to ensure safety in an electrical environment. Stay informed and take precautions to avoid accidents.

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Advice for Newcomers E lectrical hazards GeePs

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  1. Advice for NewcomersElectricalhazardsGeePs

  2. Contents • General informations about electricity • Electricalhazards (electricshock, electrocution, burns, fire and electrical arc blast) • Preventivemeasures • Good practices Electrical Hazards - GeePs

  3. General informations about electricity Electricityis a flow of electronscirculating in a conductivematerialthanks to a generator. It ischaracterizedby: • The voltage V • The currentI • The resistanceR • Ohm’slaw: U = R x I Electrical Hazards - GeePs

  4. Electricalhazards : electricshock and electrocution Accidentalleakage of currentthrough a person’s body (electricshock). It depends of severalthings: • The kind of current (DC or AC) and of itslevel currentiskilling • The resistivity of the body • The pathittakesthrough the body Effect : musculartetanisation(the victimcanor cannotshout, itisreversibleelectricalshock), ventricularfibrillation (hearttetany) electrocution Electrical Hazards - GeePs

  5. Electricalhazards: electricalburns Joule effect : heat produced by an electric current through the body Electricalburnscan come fromelectrical arcs, electrothermalburns, moltenmetal projection Electrical Hazards - GeePs

  6. Electricalhazards: fire and electrical arc blast • Short-circuits • Overheatingof cables • Overloadedelectrical circuits • Loose or rusted connections • Electrical circuits that are not properlyinsulated Electrical Hazards - GeePs

  7. Preventivemeasures How avoid accident? • Collective Protective Equipement (CPE) : Insulation, Guarding, Grounding, Electrical protective devices (switch, circuit breaker, fuses, groundfault circuit interrupter) • PersonnalProtection Equipment (PPE) : insulatinggloves, glasses, protective clothinguntreatednaturalfiber, safetyshoes Rescueresources • Emergency stop • Main breaker • Follow-up the emergency procedures • ► First-aid Electrical Hazards - GeePs

  8. Good Practices How avoid accident? • Prevention/behavior • Electrical installations must be checked • Do not overload sockets with multiple devices • Before doing any work ensure that the electrical installation is switched off • Only use equipment that is in good condition • Electrical certification (see for training courses) • Different classes of protection • Lower the voltage to a securelevel Electrical Hazards - GeePs

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