Used across walkways. 0000010155 00000 n Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. 0000006893 00000 n Additional minimum clearance distance is required for power lines carrying over ________. Leaving or using electrical appliances near water - As electric current is transmitted faster in on wet surfaces, you stand a chance of getting an electric shock. 0000007464 00000 n Switch Computers Electrical Hazards Electrical hazards can be found in nearly every roofing work site. 0000004793 00000 n a. c.40,000 volts (3,2,1), (5,4,3). Electrical Safety Multiple Choice Questions and Answers for competitive exams. 2.Complete Ajay needs to use a dewatering pump to drain standing water on a construction site. Which of the following are insulators of electricity? Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. The modification of the plug was not an intended use or prescribed by the manufacturer. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. 0000003603 00000 n Additionally, the ground prongs were missing from the two cords. 0000002122 00000 n 4. Use non-conductive wood or fiberglass ladders when working near power lines. Of the following choices, which are frequent electrical hazards A) 120v . The most dangerous place to use electrical equipment is? 3. 0000004444 00000 n d. No, because an extension cord would not provide enough power. If you are touching any grounded material while using a power tool 0000421627 00000 n The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. What do tripped circuit breakers and blown fuses indicate? Looking for NFPA 70E Certification? 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. 0000421920 00000 n 3.Cramp Using multi-receptacle boxes designed to be. Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. When inspecting extension cords, look for: Co-workers provided CPR, but were unable to revive the victim. The auger then fell across the other worker, the 24-year-old victim. After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. 2. 0000001604 00000 n c.15 feet c.Three-prong plug -Severe skin burns. How might this event affect the ability of animals to obtain energy to live? -Falls. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). Draw a line from the item on the left that corresponds to the match on the right. b. 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. 0000108920 00000 n Using a dry wood ladder when the possibility exists for contact with electricity. <> <>>> % Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. 1.Is faulty 4.Must be replaced, Always use a GFCI: 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: 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 . 0000003413 00000 n Identify the oxidizing and reducing agents. 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. What type of burns are the result of current flowing through and exiting the body? 2.Loose bolts -Current= the movement of electrical charge. 4.No, because he does not need to use an extension cord. Does the fall qualify as an electrical accident? Electrical Contractors Industry. a.related to muscle damage. Look for overhead power lines and buried power line indicators. OSHA Safety and Health Topics Page. a.Standing in water 1.The humidity of the environment 0000002479 00000 n Best Practices with Power Lines 1. <> 0000004274 00000 n Effective means of controlling power line hazards include: 2 0 obj Apply a warning tag to any defective tool and do not use it until the problem has been corrected. d. 20 feet. 2.Is working properly Electrical current travels through insulated ________. Hand-operated metal shifting ropes or cables of electric elevators. b+t6W' te+.W_{8u7Dt@1c. Yes, because he will be using electricity near water. 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. Which of the following part of you body can burn if you come in contact with electricity? OSHA 10 General Industry Test Answer Key WALKING. Select the correct answer and then click DONE. _5JKy. d. Match the outlet prongs to the extension cord. RZyd 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) All of the above. b) Staples 0000055319 00000 n B. Use only extension cords that are marked with a designation code for hard or extra-hard usage. Provides information about the hazards that electrical workers may experience as a part of their jobs. Does the fall qualify as an electrical accident? In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. 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. The small electrical current enters his body through his left leg. endobj Extension cords may become a trip hazard when: 0000007427 00000 n [Power Tools]. What factors determine the severity of Dirk's injuries? 0000420887 00000 n 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! 2.The person's physical condition Determine duration, frequency, degree of exposure to hazards and physical stress. endobj D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. b. Deductive objects hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l Select the correct answer and then click DONE. 128 0 obj <> endobj xref 128 26 0000000016 00000 n b.Yes, as it would be too expensive to install more permanent wiring and receptacles. Easy to identify Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? Quiz Question 2: Which is acceptable when using powdered tools? 0000004884 00000 n Carly needs to use an extension cord with her corded nail gun. When it completes a circuit through the body. 0000005734 00000 n Electric current cannot exist without an unbroken path to and from the conductor. 0 Use tools and equipment according to the instructions included in their listing, labeling or certification. 182 0 obj <> endobj xref 182 41 0000000016 00000 n b.Rod b.A fast-acting switch monitoring current flow A. wrap tape around the damaged spot to prevent electrical shocks. 3. Which of the following can be the result of electric shock? -If current passes through the body near the heart or brain. 0000419562 00000 n q>NmnLNmb$"Iyx1bD9.~Ll. Is split 3 0 obj 0000007116 00000 n <<7628BB2D46738F42B2FC6393656F4718>]>> One hand drill was not grounded, and the other had no safety plate. A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. 1.Damaged cover or insulation Some of the causes of these are live wire s that may be lying around, overloaded circuits, explosions that are caused by flammable objects, etc. d) All of the above. Freeze What three things must be present for a current to flow through a conductor. 1476 0 obj <>stream 0000003254 00000 n lb MKS Get All Answers to OSHA 30 Construction Final Exam. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. (D) None of the above. 0000001861 00000 n x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q 3.Loss of eyesight a.Supply power for tools or equipment on a temporary or short-term basis. 0000005716 00000 n Quiz Question 7: Which is not an insulator? b.30,000 volts 0000002150 00000 n Using tools and equipment that can contact power lines increases the risk. If electrical equipment is used in ways for which it is not designed, you can no longer depend on safety features built in by the manufacturer. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. Select the correct answer and then click DONE. 0000013999 00000 n As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 4.Running through doorways. Muscular contraction and nerve damage occur; death likely. Electricity becomes hazardous when it takes an unintended path to complete the ________. trailer 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. b.Metal 0000000816 00000 n It is important to note that NFPA 70E is a . She finds several available in the shop. Which of the following are insulators of electricity? 4 0 obj Question 1: Employers must ensure that every electric utilization system and all utilization equipment installed, majorly modified, or replaced after March 15, 1972, complies with the standards for electricity set by the National Fire Protection Association, which have been adopted by OSHA. b.811 The accident site was wet; also, humidity was high and the victim was sweating. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? %PDF-1.4 % OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. 0000005406 00000 n Examples of Equipment That Can Contact Power Lines. 0000003900 00000 n a.Yes, because the electrical shock caused the fall. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires -Grounding= a conductive connection to the earth which acts as a protective measure. When current travels through your body - Definition of electric shock. Match the length from job to outlet. d. Not checking to make sure that the motor was properly grounded, If the circuit does not turn off when testing the GFCI, the GFCI: 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 Only after a rescue squad arrived about 4 minutes later did anyone realize that the crane was in contact with a power line -- all those present had assumed that the victim had suffered a heart attack. 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. Question 1: Which of the following is a danger of electricity? Stay at least 10 feet away from overhead power lines. You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. A measure of the energy of motion of the particles in a substance is its _____. c. Extend the reach of the power tool. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. 1.Extension cords Contact utilities for buried power line locations. 0000056642 00000 n b.Electrical tools 2.Grounding d. heart attacks. 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. 0000011060 00000 n Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. You should? The victim was part of a crew that was constructing a concrete wall. a.Extension cords Frequently inspect electrical systems to insure that the path to ground is continuous. 0000001896 00000 n 0000017336 00000 n 4,600. Besides personal bodily injury, what other electrical hazards can be found in the workplace? Visually inspect all electrical equipment before use. 0000015549 00000 n -Rubber. BE SAFE! Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream 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. 3. Bob is asked to repair some overhead wiring, requiring the use a ladder. Explain the purpose and use of the MyPlate symbol. Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. (B) Switch sticks. 0000427811 00000 n 0000089142 00000 n Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. Arc Flash. 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). 0000005042 00000 n A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. :$#k9BPnZ{Qqe/reKy,'ZlB# Quiz Question 3: Power cords can be damaged by which of the following? c. No, because the electricity is needed on a long-term basis. s\A0W+ When you plug in a device (e.g., a power tool), the electricity takes the easiest path from the plug-in, to the tool, and back to the power source. Overview. a.Two-prong plug The ________ keeps the electricity on its intended path through the conductor. Which of the following are conductor of electricity? 2.Grease xref 2.Loose screws 1. Examples Of Electrical Hazards. (C) Hot sticks. Using cords or tools with worn insulation or exposed wires. OSHA 29 CFR 1910, Subpart P . Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. View Answer Answer: 600v 4 . Is not broken, Question Text: Electrical tools should be grounded with a(n)________. Cardiac arrest or death - A result of electrical shock. d.Water, Other electrical hazards in the workplace include: c.Touching the motor
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