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A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. Most of the hydrides of Group 1A and Group 2A metals are ionic. Regarding hand protection employers should: A. One hand drill was not grounded, and the other had no safety plate. Arc Flash. Contact utilities for buried power line locations. Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. Select the correct answer and then click DONE. Which of these can be used as insulating live-line tools for electrical protection. ( <<7628BB2D46738F42B2FC6393656F4718>]>>
Select the correct answer and then click DONE. Select the correct answer and then click on DONE. Remove cords from receptacles by pulling on the plugs, not the cords. c.911 This is action is also known as creating or completing an electrical circuit.
What are the 4 main type of hazards? [Ultimate Guide!] OSHA Safety and Health Topics Page. To verify an electrically safe work condition, all these conditions should be confirmed EXCEPT: Effective training of employees includes all of the following EXCEPT: How to operate power tools in wet conditions. Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. As he began to pull away, the crew supervisor yelled to him, asking if the crew could use his water hose to wash out their cement bucket suspended from the crane. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
Frequently inspect electrical systems to insure that the path to ground is continuous. Question 1: Each year, approximately __________ workers suffer from electricity related injuries. Ajay needs to use a dewatering pump to drain standing water on a construction site. 0000007464 00000 n
1.Flammable liquids 1.Cuts c) Age A fan connected to a 120-volt electrical system via an extension cord provided ventilation for a worker performing a chipping operation from an aluminum stepladder. While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. SECTION #4 | Participant Guide 2 Electrical Safety mELECTRICAL SAFETYm mACTIVITY 1 - GROUNDINGm In your small group, read fact sheets A and B, and the following scenario. H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV
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There were no eyewitnesses to the accident, but evidence suggests that while the victim was handling the damaged and energized extension cord, he provided a "path to ground" and was electrocuted. c.40,000 volts Using a dry wood ladder when the possibility exists for contact with electricity. -Glass. 1476 0 obj
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Study with Quizlet and memorize flashcards containing terms like Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential?, According to NFPA 70E, job briefings must be held for those employees that will be working on or near live parts operating at ______ or more., When does electricity become hazardous to humans? b.The tool's power cord. 1.When you are using electricity near water a.Conductive objects The floor is covered in water and she is barefoot. How might this event affect the ability of animals to obtain energy to live? -Rubber. 0000015549 00000 n
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Electrical Safety Multiple Choice Questions(MCQs) & Answers - gkseries a.related to muscle damage. The victim was part of a crew that was constructing a concrete wall. The laborer, who was wearing leather gloves, received an electric shock and dropped the wire reinforcement, which fell across the power line and simultaneously contacted the metal rail of the scaffold, energizing the entire scaffold. 2. b.Yes, because Bob was on . d.The body of the power tool. He yelled for his co-workers to disconnect the power, which they did. 0000002195 00000 n
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One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. Is not broken, Question Text: Electrical tools should be grounded with a(n)________. Frames of non-electrically driven elevator cars to which electric conductors are attached. Power was supplied through two extension cords from a nearby residence. You need to evaluate the situation you are in and assess your . 0000017163 00000 n
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Occupational Safety & Health Administration, Death Due to Lack of Ground-Fault Protection, Deaths Due to Missing or Discontinuous Path to Ground, Deaths Due to Equipment Not Used in Manner Prescribed, Deaths Due to Improper Use of Extension and Flexible Cords, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Improper use of extension and flexible cords, Electrical Safety: Safety and Health for Electrical Trades Student Manual, ground-fault circuit interrupters (GFCI)s, assured equipment grounding conductor program (AEGCP), Electricity and Tree Care Work A Deadly Combination, Working Safely Around Downed Electrical Wires, Electrical Safety Hazards of Overloading Cable Trays, Small Business Safety and Health Handbook, Fire Fighters Exposed to Electrical Hazards During Wildland Fire Operations, Fatality Assessment and Control Evaluation (FACE) Program, NIOSH Face Reports Indexed by Industry or Cause of Fatality, Worker Deaths by Electrocution: A Summary of Surveillance Findings and Investigative Case Reports, Severe Storm and Flood Recovery Assistance. 0000003603 00000 n
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c.15 feet An 18-year-old worker at a construction site was electrocuted when he touched a light fixture while descending from a scaffold for his afternoon break. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. OSHA will keep all identities confidential. Ground all exposed metal parts of equipment. Question 2: Which of the following are ways employers must protect their employees on the workplace? 4.On equipment that must run unattended for long periods of time, Manufacturing equipment may be grounded using a wire connected to a rod driven into the earth. 1.Clench 0000421627 00000 n
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Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. Check your employee's electrical safety knowledge through an electrical safety quiz. He may have dropped the extension cord at the site and not heard the connector break. %%EOF
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Used across walkways. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. D. Have an ANSI sticker and an expiration date. 1.Missing This standard also includes safe work practices for employees performing other work activities that can expose them to electrical hazards as well as safe work practices for the following: (1) Installation of conductors and equipment that connect to the supply of electricity (2) Installations used by the electric utility, such as office . Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. NFPA 70E defines those special circumstances and sets rigid electrical safety limits on voltage exposures, work zone boundary requirements and necessary personal protective equipment (PPE). d.Alert workers of any water in the area, GFCI is an acronym for: 2.Skin b.
OSHA: Electrical Hazards Flashcards | Quizlet 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. Burns. 2. q>NmnLNmb$"Iyx1bD9.~Ll. Looking for NFPA 70E Certification? If a worker has been retaliated against for using their rights, they Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? (b) The same reaction can also be classified as a redox reaction.
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PDF OSHA Safety - Electrical Safety - Red Vector As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Use tools and equipment according to the instructions included in their listing, labeling or certification. Quiz Question 3: Power cords can be damaged by which of the following? Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. Does the fall qualify as an electrical accident? As she is adding in the chemicals, her hand touches the motor and it becomes energized. 0000012360 00000 n
A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. 2.Complete
PDF C. When an electric shock occurs, your muscles may: using a 30-amp breaker in a system with 15- or 20-amp receptacles. [29 CFR 1926.416(a)(1)]. 0000004793 00000 n
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Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. Suppose you could convert the 525525525 Calories in the cheeseburger you ate for lunch into mechanical energy with 100%100 \%100% efficiency and you throw a 0.145kg0.145~\mathrm{kg}0.145kg baseball with the energy contained in the cheeseburger.
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