0000004686 00000 n Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. D 600v. 0000419562 00000 n The accident site was wet; also, humidity was high and the victim was sweating. 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. Which of the following part of you body can burn if you come in contact with electricity? 0000004444 00000 n Short In Power Saw/Ungrounded Temporary Power Supply: On July 10, 1986, a 22-year-old carpenter was working at the construction site of large apartment complex, using a portable electric saw to construct the wooden framework of a laundry building. To avoid injury or death, you must understand and recognize hazards. a.Supply power for tools or equipment on a temporary or short-term basis. Apparently, his hand contracted and he was "locked" to the saw. 3.Body tissue 1452 0 obj <> endobj Should he use an extension cord to power it? a.Your thumb. Use only equipment that is approved to meet OSHA standards. Select the correct answer and then click DONE. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. The factors that determine the severity of an electrical injury include: 0000007427 00000 n Fire 0000002150 00000 n Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. c) Establish and enact an assured equipment grounding conductor program (AEGCP) The driver stopped the truck under the power line, and the victim, not realizing that the truck had moved, swung the boom to position the bucket behind the truck. h|UnH}+i-. OSHA 10-Hour Safety Course - Electrical Safety Page 5 of 5 Use the three-stage safety model to stay safe: recognize, evaluate, and control hazards. (C) Hot sticks. A. indoors. Draw a line from the item on the left that corresponds to the match on the right. gYpV:+ Visually inspect all electrical equipment before use. 0000022637 00000 n Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. Underground electrical hazards are: A. Supply power for tools or equipment on a long-term basis. Unless you know otherwise, assume that overhead lines are energized. OSHA 29 CFR 1910.147 . Using multi-receptacle boxes designed to be. 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. An employee was texturing a wall using an air compressor. 4.Cardiac arrest It is important to note that NFPA 70E is a . c. Extend the reach of the power tool. 4. Potential hazards of electricity are preventable if you do which of the following listed below? Using cords or tools with worn insulation or exposed wires. 0000005520 00000 n a.311 -Grounding= a conductive connection to the earth which acts as a protective measure. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. Provide a safe path to earth ground for electricity. 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). High humidity If a defective power tool gives you an electric shock, how might your muscles react? RZyd ZR)!=w|; @uT C0? 0000004921 00000 n Any cords found not to be marked for hard or extra-hard use, or which have been modified, must be taken out of service immediately. How might this event affect the ability of animals to obtain energy to live? As a result, the ground prong of the welder plug did not insert into the ground terminal of the cord, so that as soon as a connection was made, the outside metal case of the welder became energized, electrocuting the victim. 0000427811 00000 n OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. [, Do not modify cords or use them incorrectly. List the four main types of electrical injuries, Using the illustration, select the answer that matches the picture, Identify the illustration by selecting the appropriate answer. c.15 feet Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? 1.Fingernails Whether the hazard is posed by worn or damaged power tools or cords, improperly grounded tools or equipment, or the presence of standing water, it is the responsibility of the contractor to make sure the tools and equipment Select the correct answer and then click DONE. d. No, because an extension cord would not provide enough power. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. Carly needs to use an extension cord with her corded nail gun. Electrical current travels through insulated ________. a.Yes, because the electrical shock caused the fall. You need to evaluate the situation you are in and assess your . When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: a.Electricity What do tripped circuit breakers and blown fuses indicate? Looking for NFPA 70E Certification? After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. c.falls. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Adapter For 3-Prong Cord Not Grounded To Outlet: On May 27, 1986, two workers were using a 110-volt auger to install tie-down rods for a manufactured home. 2.Complete Explosion. . In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. a. Gaseous matter 0 (B) Switch sticks. The power switch on the welder was already in the "on" position, and the female end of the extension cord, which was spring loaded, had apparently been dropped and broken. 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. Dust Freeze OSHA Safety and Health Topics Page. These short objective type questions with answers are very important for competitive exams as well as Board exams. 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. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. Does the fall qualify as an electrical accident? 1. The plug of the compressor and an extension cord had been modified to fit a wall outlet for a common household clothes dryer (220 V). A) 120v . 1.Using a fiberglass ladder when the possibility exists for contact with electricity. b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. a.Yes, as it is a mobile engine testing station. <<7628BB2D46738F42B2FC6393656F4718>]>> 0000002733 00000 n trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream 1.The humidity of the environment 1. a. trailer 3.ack of ground fault protection. Get All Answers to OSHA 30 Construction Final Exam. b.Yes, because Bob was on . Electrocution. c) Age a.Conductive objects 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: 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. c. Inductive objects The source of the shocks -- the saw -- was not replaced. 0000024814 00000 n Safe operation of hand and portable powered tools and other hand-held equipment. 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. 1 0 obj (E) a, b, and c. 2. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. True. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? Explain the purpose and use of the MyPlate symbol. Using a dry wood ladder when the possibility exists for contact with electricity. d.Adapter, What is a GFCI? 2.Yes, because he is using a portable power tool. Quiz Question 7: Which is not an insulator? Select the correct answer and then click DONE. View Answer Answer: 600v 4 . 0000001731 00000 n The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. If the power supply to the electrical equipment at your site is not grounded or the path has been broken, fault current may travel through a worker's body, causing electrical burns or death. Find the energy required to raise an electron from the n=4n=4n=4 state to the n=5n=5n=5 state in Li2+\mathrm{Li}^{2+}Li2+ and in hydrogen atom. b.burns. Question 2: Which of the following are ways employers must protect their employees on the workplace? 2. An examination revealed that the spring, cover plate, and part of the melamine casing were missing from the face of the female connector (the spring and some melamine fragments were found at the accident site). Hand-operated metal shifting ropes or cables of electric elevators. As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. He plans to use it over a period of at least six months. To be safe, you must think about your job and plan for hazards. 0000002122 00000 n Electrical Hazards Electrical hazards can be found in nearly every roofing work site. Which of the following are caused by contact with electricity? How will she choose the correct cord? % Select the correct answer and then click DONE. Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB Frames of non-electrically driven elevator cars to which electric conductors are attached. 0000007694 00000 n Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. Use non-conductive wood or fiberglass ladders when working near power lines. d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs When current travels through your body - Definition of electric shock. Which of these can be used as insulating live-line tools for electrical protection. d.A power tool, A GFCI is designed to: b. 4.Flex d.Alert workers of any water in the area, GFCI is an acronym for: The floor is covered in water and she is barefoot. Intentionally creating a low-resistance path that connects to the earth. 0000010603 00000 n b.30,000 volts Work performed on an electrical system within reaching distance of energized components is_____work. :$#k9BPnZ{Qqe/reKy,'ZlB# OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. 4. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. 0000002403 00000 n 0000001495 00000 n Extension cords had poor splices, no grounds, and reversed polarity. Take any defective equipment out of service. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. 2.Using extension cords or electrical tools properly. 4.No, because he does not need to use an extension cord. endobj 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! %%EOF H. endobj a) Door or window edges 2.Grounding The source of the electricity was apparently a short in a receptacle, but examination revealed that the electrical equipment used by the contractor was in such poor condition that it was impossible to make a certain determination of the source of the short. 0000005734 00000 n 0000108920 00000 n There are many types of hazards - chemical, ergonomic, physical, and psychosocial, to name a few - which can cause harm or adverse effects in the workplace. Use only extension cords that are 3-wire type. d.50,000 volts. D. near other electrical equipment. Death is probable. Electricity becomes hazardous when it takes an unintended path to complete the ________. c.Guaranteed Fault Circuit Interrupter _.9u'2G_0 Ue]e"x5|Y Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: 1.Is firmly connected 0000055319 00000 n b.Shut off power within five minutes of the imbalance startxref 1.Is faulty Quiz Question 2: Which is acceptable when using powdered tools? c.Three-prong plug You should? The following are electrical hazards: Shock. 0000001908 00000 n gYpV:+ Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? D. Have an ANSI sticker and an expiration date. What was Latoya's first mistake? (See NFPA 70E-2021 Article 130 and OSHA subpart S part . In which of the following workplace situations are you at risk for coming into contact with live electrical . Outlets She has an older drill with a steel housing and a 3-prong plug. and more. 0000001896 00000 n Best Practices with Power Lines 1. Examples of Equipment That Can Contact Power Lines. 0000028595 00000 n Select the correct answer and then click DONE. 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.
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