which of the following are electrical hazards osha quizlet

b+t6W' te+.W_{8u7Dt@1c. Using cords or tools with worn insulation or exposed wires. Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream a. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. Extension cords may become a trip hazard when: 4 0 obj 3.No, because he will not be touching any grounded material when using the tool. Lockout/tagout procedures. 0000017163 00000 n [Flexible Cords] Cords that are not 3-wire type, not designed for hard-usage, or that have been modified, increase your risk of contacting electrical current. 0000005406 00000 n endobj Does the fall qualify as an electrical accident? Yes, because he will be using electricity near water. 0000110659 00000 n 3.Vapor OSHA 29 CFR 1910, Subpart S . d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. 4,600. Easy to identify Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. 4.No, because he does not need to use an extension cord. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. d.Add more outlets. vpfuI)],s Handling Damaged Extension Cord When Energized: A 19-year-old construction laborer was working with his foreman and another laborer to construct a waterfront bulkhead for a lakeside residence. 3 0 obj %PDF-1.5 b) By supplying GFCIs, or ground-fault circuit interrupters s\A0W+ 3.Loss of eyesight Select the correct answer and then click DONE. A. wrap tape around the damaged spot to prevent electrical shocks. 2. 2.Loss of muscle control 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. Frames of non-electrically driven elevator cars to which electric conductors are attached. a. Gaseous matter He yelled for his co-workers to disconnect the power, which they did. xYmo -ER/&@[D,_! Isolating, Power lines may be located underground. Does the fall qualify as an electrical accident? 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! Provides information about the hazards that electrical workers may experience as a part of their jobs. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. . Quiz: Electrical Hazards. 0000001672 00000 n Is the west coast of Africa a plate boundary? <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? Examples Of Electrical Hazards. 0000000816 00000 n 1.Clench Latoya is using a mixing motor to mix pool chemicals in a plastic drum. 0000421920 00000 n 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. b.30,000 volts The ________ keeps the electricity on its intended path through the conductor. 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 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. d. 20 feet. <> Used across walkways. 2.Loose bolts Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. xref 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 contact lasts for 5 seconds before someone is able to shut off the power. In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. b.Metal Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. Determine duration, frequency, degree of exposure to hazards and physical stress. b.Ground Fault Critical Interrupter b. Best practices with power lines include: Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? Before work began, the company safety director made sure that insulated line hoses were placed over sections of the the power line near the jobsite and that a safety clearance zone was marked off for arriving cement trucks. 0000002386 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. 1.Pain b.Electrical tools [Flexible Cords and Power Tools]. 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 In which of the following workplace situations are you at risk for coming into contact with live electrical . The victim was totally deaf in one ear and suffered diminished hearing in the other. 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). 3.When you are using portable power tools 0000420277 00000 n 2.Using an aluminum ladder when the possibility exists for contact with electricity. 0000057373 00000 n B. outdoors. 2.Loose screws c.Three-prong plug When inspecting extension cords, look for: When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 0000419562 00000 n The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. b.Shut off power within five minutes of the imbalance When it completes a circuit through the body. Is split b.Yes, as it would be too expensive to install more permanent wiring and receptacles. 3.The length of time the body is in contact with electricity 4.Cardiac arrest The most dangerous place to use electrical equipment is? Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. Continually audit cords on-site. Looking for NFPA 70E Certification? 0000000016 00000 n d.Alert workers of any water in the area, GFCI is an acronym for: Contact utilities for buried power line locations. [. Check your employee's electrical safety knowledge through an electrical safety quiz. 0000001116 00000 n Post warning signs. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. -Grounding= a conductive connection to the earth which acts as a protective measure. -Current= the movement of electrical charge. Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. Using multi-receptacle boxes designed to be. 3 0 obj 1.Flammable liquids The workers administered CPR to the victim, but to no avail. -Falls. 0000006866 00000 n 0000022637 00000 n a.Yes, as it is a mobile engine testing station. Using tools and equipment that can contact power lines increases the risk. High humidity endobj 0000003640 00000 n 0000001604 00000 n What do tripped circuit breakers and blown fuses indicate? Electrical Contractors Industry. 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: Arc Flash. 1. 0000001861 00000 n c.The outlet. Draw a line from the item on the left that corresponds to the match on the right. Which of the following factors determine how severe an electrical injury might be? You should? 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: 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. Power was supplied through two extension cords from a nearby residence. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. BE SAFE! 1452 25 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 What type of burns are the result of current flowing through and exiting the body? View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. Select the correct answer and then click DONE. Extension cords are used to: <>>> Question 1: Which of these is a type of Ground Fault Circuit Adapter? Regarding hand protection employers should: A. Safe operation of hand and portable powered tools and other hand-held equipment. 0000007116 00000 n 0000007694 00000 n Electrocution. A co-worker disconnected the power cord to the saw, too late to save the victim. c.Gasoline 0000420564 00000 n 0000001495 00000 n A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. 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. 0000004946 00000 n 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. 0000018681 00000 n Which of the following are caused by contact with electricity? He plans to use it over a period of at least six months. c.911 What is the output of the program in Exercise 17, if first = 26 and second = 8? (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Besides personal bodily injury, what other electrical hazards can be found in the workplace? 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. a.Standing in water Quiz Question 1: Which of the following is not a category of electrical burns? 0000005734 00000 n Test your knowledge with our electrical safety quiz below. Select the correct answer and then click DONE. H. How might this event affect the ability of animals to obtain energy to live? 3.Something that causes current to flow through the . Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. 1.Fingernails If a worker has been retaliated against for using their rights, they 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 Visually inspect all electrical equipment before use. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. Ajay needs to use a dewatering pump to drain standing water on a construction site. When an electric shock occurs, your muscles may: d. 411, You are working with a 10-foot section of a conductive pipe near power lines. 1452 0 obj <> endobj 0000004273 00000 n Ground all exposed metal parts of equipment. 1.When you are using electricity near water Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. d.A power tool, A GFCI is designed to: Select the correct answer and then click DONE. 182 0 obj <> endobj xref 182 41 0000000016 00000 n a.Supply power for tools or equipment on a temporary or short-term basis. Which of the following are insulators of electricity? Ground all power supply systems, electrical circuits, and electrical equipment. q>NmnLNmb$"Iyx1bD9.~Ll. 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. 2.Is working properly 2.Using extension cords or electrical tools properly. a.Extension cords 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. 2.Skin The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. lex has set up a mobile engine testing station in the maintenance area. Underground electrical hazards are: A. b) Staples Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. Work performed on an electrical system within reaching distance of energized components is_____work. (3,2,1), (5,4,3). OSHA will keep all identities confidential. uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. 1. Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 5 feet What was Latoya's first mistake? Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. Draw a line from the item on the left that corresponds to the match on the right. 0000013716 00000 n 0000001731 00000 n 2.Grease 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. Damaged Extension Cord Leaves Arc Welder Ungrounded: A 29-year-old welder attempted to connect a portable arc welder to an electrical outlet using an extension cord. The NEC C. Suggestions [, Use all equipment according to the manufacturer's instructions. 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 BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. b. Deductive objects What is the minimum clearance distance you must maintain from the power lines? and more. Is not painted over True. 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. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? Switch The auger then fell across the other worker, the 24-year-old victim. Quiz Question 7: Which is not an insulator? %PDF-1.4 % Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. 5. Question 2: Which of the following are ways employers must protect their employees on the workplace? One hand drill was not grounded, and the other had no safety plate. The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. It is important to note that NFPA 70E is a . 3. 1.Extension cords d.The body of the power tool. -Wood. 0000004686 00000 n When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. 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.Is faulty Use only extension cords that are marked with a designation code for hard or extra-hard usage. 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. An employee was texturing a wall using an air compressor. Freeze Match the length from job to outlet. 3. 1. Improper Use of Extension and Flexible Cords. 0000003254 00000 n These short objective type questions with answers are very important for competitive exams as well as Board exams. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream d. No, because an extension cord would not provide enough power. Select the correct answer and then click DONE. 0000002195 00000 n 0000004274 00000 n b.The tool's power cord. endobj 128 0 obj <> endobj xref 128 26 0000000016 00000 n 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. De-energizing In addition to contact with power lines, the top electrical hazards include: Electrical Hazards Electrical hazards can be found in nearly every roofing work site. 3. Identify the oxidizing and reducing agents. 0000005716 00000 n Quiz Question 2: Which is acceptable when using powdered tools? When used on the moon? Select the correct answer and then click DONE. Question 3: A/an ____________ is a unit of measurement for electrical resistance. 2. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? 1. 0000005632 00000 n Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. Electrical hazards are life threatening incidents that could happen due to electricity. Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? 2.Yes, because he is using a portable power tool. 3.ack of ground fault protection. OSHA 10 General Industry Test Answer Key WALKING. 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. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. 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. a.Your thumb. Muscular contraction and nerve damage occur; death likely. lb MKS 0000004208 00000 n 0000001646 00000 n 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: Additional minimum clearance distance is required for power lines carrying over ________. 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. Supply power for tools or equipment on a long-term basis. Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. 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. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? 1. c.Absorb any water around the area D. Have an ANSI sticker and an expiration date. Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. 4.Circuit breakers, When inspecting power tools, look for: 4. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). Before using the equipment, be sure that the ground wire: Due to the dynamic, rugged nature of construction work, normal use of electrical equipment at your site causes wear and tear that results in insulation breaks, short-circuits, and exposed wires. a.Yes, because the electrical shock caused the fall. Extension cords had poor splices, no grounds, and reversed polarity. -Conductor= permits the free flow of electricity. %PDF-1.4 % 0000015549 00000 n c.40,000 volts A) Identify; Castigate; C) Evaluate; D) Modify; 3. Additionally, the ground prongs were missing from the two cords. 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. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. C 277v. 0000005520 00000 n No Ground-Fault Circuit Interrupters (GFCIs): A journeyman HVAC worker was installing metal duct work using a double-insulated drill connected to a drop light cord. =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR Take any defective equipment out of service. 1.Cuts 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. Select the correct answer and then click DONE. gYpV:+ The victim was part of a crew that was constructing a concrete wall. Apparently, his hand contracted and he was "locked" to the saw. % 0000056642 00000 n True. 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. endobj stream Question 2: Which of the following is NOT a category of electrical burns? Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t Visually inspect all electrical equipment before use. Electricity will form a "path" or "loop". d.Metal, Over half of all deaths caused by electricity result from contact with ________. 4. 4. 5.Twitch, Electrical shock may result in: 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. The small electrical current enters his body through his left leg. 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. Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. 0000003771 00000 n 0000003715 00000 n Get All Answers to OSHA 30 Construction Final Exam. He may have dropped the extension cord at the site and not heard the connector break. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. Quiz Question 3: Power cords can be damaged by which of the following? When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. Most of the hydrides of Group 1A and Group 2A metals are ionic. b.Rod B 208v. 2.Something to transport the electrical current -- A conductor. 4.Broken. 0000420887 00000 n %PDF-1.4 % ZR)!=w|; @uT C0? Working with electricity can be dangerous. Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires She has an older drill with a steel housing and a 3-prong plug. Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. 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. :$#k9BPnZ{Qqe/reKy,'ZlB# <> 4. 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. Explain the purpose and use of the MyPlate symbol. b.Not wearing insulating shoes or boots when she was handling electrical equipment 4.Flex 2. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. Question 4: Which of the following is a type of burn caused by electrical hazards? 2 0 obj 3.Tears The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. 0000068035 00000 n No GFCI's were used. Which of the following part of you body can burn if you come in contact with electricity? Do not remove ground prongs from cord- and plug-connected equipment or extension cords. 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? OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. 0000013999 00000 n b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. 0000001896 00000 n 3. specifically addresses electrical protective devices. 0000012944 00000 n

which of the following are electrical hazards osha quizlet 2023