Select the choices that accurately define the common electrical term. An employee was texturing a wall using an air compressor. 0000009628 00000 n 0000012944 00000 n lex has set up a mobile engine testing station in the maintenance area. 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. When an electric shock occurs, your muscles may: Supply power for tools or equipment on a long-term basis. !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ b.burns. 0000007741 00000 n She finds several available in the shop. %PDF-1.4 % Select the correct answer and then click DONE. 2 0 obj The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. 2.Loss of muscle control B 208v. C. near water. c.Guaranteed Fault Circuit Interrupter Yes, because he will be using electricity near water. x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. Use only equipment that is approved to meet OSHA standards. 0000005632 00000 n 3 0 obj <>>> Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. -Grounding= a conductive connection to the earth which acts as a protective measure. Latoya is using a mixing motor to mix pool chemicals in a plastic drum. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 0000013999 00000 n All of the following are essential considerations for the safe use of cords and wiring EXCEPT: Which one of these methods is not acceptable for putting out an electrical fire? Use only cords, connection devices, and fittings that are equipped with strain relief. HWMo#7v#h>6,Z4- -Current= the movement of electrical charge. What do tripped circuit breakers and blown fuses indicate? Examples of Equipment That Can Contact Power Lines. 0000068035 00000 n Select the correct answer and then click DONE. Of the following choices, which are frequent electrical hazards Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. 2.Using an aluminum ladder when the possibility exists for contact with electricity. 0000108653 00000 n True. <> Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? % h|UnH}+i-. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [29 CFR 1926.404(f)(7)(v)]: Frames and tracks of electrically operated cranes. A measure of the energy of motion of the particles in a substance is its _____. BE SAFE! The modification of the plug was not an intended use or prescribed by the manufacturer. 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. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. Overview. Water Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. vpfuI)],s 1 0 obj Arc Flash. Is not painted over -Severe skin burns. 2.Complete 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? %%EOF 0000010603 00000 n %PDF-1.5 DHPP0MHLHIPPXc f2LXL"dgJ:@ ys`llr-shH,Y@Z 23J0a_TXD;X,;&0i,i&f&T8h R/ v`,l. 440!2D9482q={LPXs +( endstream endobj 129 0 obj <> endobj 130 0 obj <> endobj 131 0 obj <>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageB]/ExtGState<>>> endobj 132 0 obj <> endobj 133 0 obj <> endobj 134 0 obj <> endobj 135 0 obj <>stream One hand drill was not grounded, and the other had no safety plate. startxref 0000002385 00000 n Fire 0 -Damage to internal organs. Using multi-receptacle boxes designed to be. OSHA Safety and Health Topics Page. Should he use an extension cord to power it? Select the correct answer and then click DONE. Electrical Contractors Industry. hazard or that their employer is not following OSHA's rules. c.Absorb any water around the area 1.Pain c.40,000 volts 0000056642 00000 n 0000003715 00000 n . Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? Ground all power supply systems, electrical circuits, and electrical equipment. a. b+t6W' te+.W_{8u7Dt@1c. 4 0 obj Question 1: Which of the following is a danger of electricity? A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. -Wood. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. Ajay needs to use a dewatering pump to drain standing water on a construction site. When current travels through your body - Definition of electric shock. -Glass. D. near other electrical equipment. Select the correct answer and then click DONE. True. This may damage your equipment and cause employee injuries. ( Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. Select the correct answer and then click DONE. Both could have prevented the accident from occuring. De-energizing Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. The auger then fell across the other worker, the 24-year-old victim. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? % Do not remove ground prongs from cord- and plug-connected equipment or extension cords. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. 0000002557 00000 n The victim was part of a crew that was constructing a concrete wall. 0000006152 00000 n The auger has a one-quarter horsepower motor encased in a metal housing with two handles. 1.When you are using electricity near water Contact utilities for buried power line locations. Electricity will form a "path" or "loop". Determine duration, frequency, degree of exposure to hazards and physical stress. -Conductor= permits the free flow of electricity. One handle has a deadman's switch. Which of the following are conductor of electricity? c.The outlet. 1.The humidity of the environment Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. Using equipment outdoors that is labeled for use only in dry, indoor locations. 0000004884 00000 n Explosion. <> 1.A source of electrical current to flow. What is the minimum clearance distance you must maintain from the power lines? c) Establish and enact an assured equipment grounding conductor program (AEGCP) A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. The workers had removed their shirts and were sweating. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. Power was supplied through two extension cords from a nearby residence. 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). 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. <>>> Since the outlet at the adjacent property had no socket for a ground prong, the extension cords were plugged into the outlet using an adapter, but the ground wire of the adapter was not grounded. Does the fall qualify as an electrical accident? 3.Needs to be reset Stay at least 10 feet away from overhead power lines. 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 . d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. a.Yes, because the electrical shock caused the fall. Death is probable. x=k6S *ywvkDyb_w rg&@Q5/^4O_~w/]7[xqs7Zt?LK-,>W\W`Mb?n8\.vpOJA7~5R%.oJd|Bbv7biQH%^~C=m3_ov{8] }C.Se={o7H[w@/^j BgXRC/O/eiLHiN\4~7x=^J@|]zu"x]lQ-+.xF=oY +B?jSl|(agF_].+UH\!/;AU .cG!h@42 iqnkZtdc#^)AX96(wFZ,RP{[\j\aJgc) diV;BNzZge(}=0Pj Qp@"]yOnNw89 2.Loose bolts a.Conductive objects 0000003603 00000 n This is action is also known as creating or completing an electrical circuit. The ground wire was not attached on the male end of the cord's plug. OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. 0000414648 00000 n 3.Loose nuts What is the most common, non-fatal, electrical shock-related injury? a.Electricity @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ [Flexible Cords and Power Tools] If there is no ground-fault protection, these can cause a ground-fault that sends current through the worker's body, resulting in electrical burns, explosions, fire, or death. 0000001116 00000 n Provide a safe path to earth ground for electricity. b.Shut off power within five minutes of the imbalance b. Deductive objects 0000002386 00000 n 5. The factors that determine the severity of an electrical injury include: 2.Something to transport the electrical current -- A conductor. 3.Vapor Post warning signs. 4. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . It's okay to use extension cords with worn insulation, as . c) Age H\n0)M) 0Ir(,?FoKhdklz6zHG;mOqOh-tv.]NGv~d.m\S{|Fo-x-\"1X/niCYeq"ol8D~&?Kr V_/9yf 9JV%J899s{_G#R0="dL5,p: 0000001672 00000 n Use non-conductive wood or fiberglass ladders when working near power lines. Electrocution. Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 0000007464 00000 n 5 feet OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. (D) None of the above. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. 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. 2. [Flexible Cords and Power Tools]. a) Door or window edges 0000004274 00000 n Provides information about the hazards that electrical workers may experience as a part of their jobs. 4.Must be replaced, Always use a GFCI: 1.Is faulty 1. Question 3: A/an ____________ is a unit of measurement for electrical resistance. 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. 4.Broken. Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. 2 0 obj 0000003771 00000 n 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). RZyd c.15 feet Select the correct answer and then click DONE. The victim provided a path to ground and was electrocuted. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. Outlets Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. Ground all exposed metal parts of equipment. 0000011060 00000 n Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. %PDF-1.4 % Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? 0000004273 00000 n 2.Using extension cords or electrical tools properly. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. 3 0 obj 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.Your thumb. c.911 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. 3.ack of ground fault protection. -If current passes through the body near the heart or brain. What type of burns are the result of current flowing through and exiting the body? Working with electricity can be dangerous. 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. 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. 3.Something that causes current to flow through the . Out of several possible scenarios, the most likely was contact between the exposed wires of an extension cord and a screw that protruded from the receptacle, which had its face plate removed. 5.Twitch, Electrical shock may result in: [Power Tools]. Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). endobj 0000015549 00000 n b.Yes, because Bob was on . trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream c.Touching the motor While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. 3. The victim used two extension cords to supply power: a home-made cord plugged into an ungrounded receptacle on the pole, and a UL-approved cord extending from the homemade cord to the saw. 0000004444 00000 n d. 20 feet. 3.Loss of eyesight These short objective type questions with answers are very important for competitive exams as well as Board exams. 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. OSHA 29 CFR 1910, Subpart P . 2. 0000005734 00000 n hbb``b``3N0  endstream endobj 183 0 obj <>/Metadata 28 0 R/Names 184 0 R/Outlines 23 0 R/Pages 27 0 R/StructTreeRoot 30 0 R/Type/Catalog/ViewerPreferences<>>> endobj 184 0 obj <> endobj 185 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]/Properties<>>>/Rotate 0/StructParents 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 186 0 obj <> endobj 187 0 obj <> endobj 188 0 obj <>stream (A) Shotgun sticks. Identify the oxidizing and reducing agents. 0000057373 00000 n 4. <> 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. D 600v. In which of the following workplace situations are you at risk for coming into contact with live electrical . After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. 4.Flex Test your knowledge with our electrical safety quiz below. b.Electrical tools The source of the shocks -- the saw -- was not replaced. Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? Protection is lost because it will not trip when the system's load has been exceeded. 0000422244 00000 n d.50,000 volts. Select the correct answer and then click DONE. Unless you know otherwise, assume that overhead lines are energized. Additionally, the ground prong was missing and there was no GFCI protection. 2.Placed along a wall. Be sure equipment that has been shop fabricated or altered is in compliance. Quiz: Electrical Hazards. stream d.Add more outlets. In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. A) 120v . 0000004946 00000 n lb MKS 1.Clench D. Have an ANSI sticker and an expiration date. It is important to note that NFPA 70E is a . A 120v. OSHA 29 CFR 1910, Subpart S . What factors determine the severity of Dirk's injuries? g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream -Rubber. An OSHA inspection revealed that the tool's original power cord had been replaced with a flat cord, which was not designated for hard service, and that strain relief was not provided at the point where the cord entered the tool. 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. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! Check your employee's electrical safety knowledge through an electrical safety quiz. 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. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> He yelled for his co-workers to disconnect the power, which they did. b) Staples d. Match the outlet prongs to the extension cord. Freeze Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. 0000014257 00000 n Which of the following are caused by contact with electricity? Extension cords are used to: 0000001908 00000 n b.A fast-acting switch monitoring current flow Take any defective equipment out of service. Remove cords from receptacles by pulling on the plugs, not the cords. 3. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) he most common shock-related injuries are: endobj Cardiac arrest or death - A result of electrical shock. 0000008392 00000 n a.Two-prong plug Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. Does the fall qualify as an electrical accident? (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. 3. 2.Loose screws a.A small current 2.Flooding As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. and more. One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. High humidity Isolating, Power lines may be located underground. Continually audit cords on-site. The workers administered CPR to the victim, but to no avail. 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. 0000001896 00000 n The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. Draw a line from the item on the left that corresponds to the match on the right. hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l The following references aid in recognizing hazards associated with electrical work. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Question 1: Which of these is a type of Ground Fault Circuit Adapter? 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. 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. 0000002122 00000 n 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. 1.Fingernails Easy to identify Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. Potential hazards of electricity are preventable if you do which of the following listed below? 3.Tears Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. 1476 0 obj <>stream [, Use all equipment according to the manufacturer's instructions. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. Select the correct answer and then click DONE. Which of the following part of you body can burn if you come in contact with electricity? Death. He plans to use it over a period of at least six months. b) By supplying GFCIs, or ground-fault circuit interrupters 3.Clear a.Extension cords 0000004965 00000 n Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. A laborer carried a piece of wire reinforcement (10 feet long by 8 inches wide) along the top section of the scaffold and contacted the power line with it. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. 0000110659 00000 n a.Yes, as it is a mobile engine testing station. 0000002150 00000 n 0000421920 00000 n <> Carly needs to use an extension cord with her corded nail gun. Quiz Question 1: Which of the following is not a category of electrical burns? A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. c.A measurement of electricity s\A0W+GA?~G?nnnnnnnnnnnn>>{Wrbrbrbrb sbZef'N(:QvD":1vbo7o7o7W*_bTs6ivyU,;dFW` { endstream endobj 191 0 obj [/ICCBased 211 0 R] endobj 192 0 obj <> endobj 193 0 obj <> endobj 194 0 obj <> endobj 195 0 obj <> endobj 196 0 obj <>stream 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. 0000001861 00000 n H. How might this event affect the ability of animals to obtain energy to live? Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard.