Module 1_Introduction to electrical safety_part one.pdf -...

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Module 1.1-1/53Introduction toElectrical SafetyPart-1Module 1
Module 1.1-2/53Introduce the power grid and examinethe electric energy flow.Recognize key statistics relating toelectrical injuries.Recognize OSHA regulations and otherstandards relating to electrical safety.Understand basic electrical terminology.Module Objectives
Module 1.1-3/53Understand key facts relating toelectric shock.Module ObjectivesIdentify the four types of injuryrelating to electrical incidents.Understand the basic facts ofelectricity.
Module 1.1-4/53Module ObjectivesUnderstand Ohm’s Law anddescribe how the terms.current, voltage and resistancerelate to Ohm’s Law.Recognize the effects ofelectricity on the human body.
Module 1.1-5/53
Module 1.1-6/53From 2003-2010, there were 1,738 deathsfrom on-the-job electrical injuries (163 in2010).That’s4% ofALLoccupational deaths.That’s almost one death per business day!Electricity is the 7thleading cause ofinjury-related occupational death.Electrifying Statistics
Module 1.1-7/53Total number of Fatalities: 5,096.Contact with overhead power lines wasthe leading cause of electrocutions,causing 44% of the deaths(2,219 fatalities).The second leading was contact withwiring, transformers and other electricalcomponents(27% or 1,392 deaths).!!! most common workers who install, repair and maintain electrical systems in thenormal course of their ELECTRICALwork !!!Reason: failure to properlyde-energizeelectrical equipment prior to commencing work.Electrifying Statistics(1992-2010, Exclusive Fatal electrical injuries)
Module 1.1-8/53The third most common cause wascontact with electrical current ofmachines, tools, appliances or lightingfixtures(17% or 861 deaths).!!! most common workers who use electrical tools in the normal course of theirNON-ELECTRICALwork!!!Reason: contact with electrical components mistakenly thought to be de-energized due to a mistake in wiring or re-wiring, or misidentified wiring.Contact with buried, underground powerlines caused 1% of the fatalities. Struckby lighting represents 5%.Electrifying Statistics
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Module 1.1-11/53Non-fatal injuries were also high, with66,748 from 1992 through 2010.Electrifying Statistics(1992-2010, Exclusive Non-Fatal electrical injuries)37% were caused by contact withelectrical current of machines, tools,appliances or lighting fixtures.35% were caused by contact with wiringor transformers.2% were caused by contact with buried,underground power lines.
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Module 1.1-13/53OSHA 29 CFR 1910, Subpart I(Personal Protective Devices)OSHA 29 CFR 1910.147(Lockout/tagout procedures. Describeshow to service or maintain equipment that might be unexpectedlyenergized)OSHA 29 CFR 1910, Subpart P(Safe operation of hand andportable powered tools and hand-held equipment)OSHA 29 CFR 1910, Subpart S(Safety requirements for thepractical safeguarding of employees in the workplace)OSHA 29 CFR 1910.333(Lockout/tagout procedures. Describeshow to service or maintain energized circuits)
Module 1.1-14/53Safety related work practicesSafety related maintenancerequirementsSafety requirements for specialequipmentInstallation safety requirementsNational Fire Protection Association

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