which of the following are electrical hazards osha quizlet

The victim collapsed into the lake and sank 4-1/2 feet to the bottom. 4. c) Age The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. Select the correct answer and then click DONE. 4 0 obj Safe operation of hand and portable powered tools and other hand-held equipment. d. heart attacks. q>NmnLNmb$"Iyx1bD9.~Ll. Provides information about the hazards that electrical workers may experience as a part of their jobs. 30 days B. d.Add more outlets. b.Yes, because Bob was on . 5. 0000009628 00000 n Extension cords may become a trip hazard when: 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. True. On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. Using multi-receptacle boxes designed to be. Using cords or tools with worn insulation or exposed wires. 4.Broken. As she is adding in the chemicals, her hand touches the motor and it becomes energized. stream h|UnH}+i-. Electricity will form a "path" or "loop". 3.Something that causes current to flow through the . The auger then fell across the other worker, the 24-year-old victim. s\A0W+ To avoid injury or death, you must understand and recognize hazards. Examples Of Electrical Hazards. 0000001861 00000 n Potential hazards of electricity are preventable if you do which of the following listed below? [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. b.Yes, as it would be too expensive to install more permanent wiring and receptacles. 0000018681 00000 n Electrical Safety Multiple Choice Questions and Answers for competitive exams. d. Match the outlet prongs to the extension cord. Question 1: Which of the following is a danger of electricity? One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. 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. Muscular contraction and nerve damage occur; death likely. lb MKS 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 following hazards are the most frequent causes of electrical injuries Contact with power lines, Lack of ground-fault protection, Path to ground missing or discontinuous, Equipment not used in manner prescribed, and Improper use of extension and flexible cords. -Falls. H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV L%=Kx&0W+ 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. 1.Extension cords 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: BE SAFE! 0000008392 00000 n Best Practices with Power Lines 1. (A) Shotgun sticks. A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. c.Wood Power was supplied through two extension cords from a nearby residence. Equipment used in manner prescribed. Quiz Question 7: Which is not an insulator? One handle has a deadman's switch. 0000004965 00000 n -Severe skin burns. 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. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. Wearing a baseball cap 0000003413 00000 n trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream 2. 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. High humidity Fire d.Alert workers of any water in the area, GFCI is an acronym for: 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. The ________ keeps the electricity on its intended path through the conductor. 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.Three-prong plug endobj Is split 2.Grounding a.Yes, because the electrical shock caused the fall. Visually inspect all electrical equipment before use. OSHA 29 CFR 1910, Subpart P . While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. 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 Question 2: Which of the following are ways employers must protect their employees on the workplace? C. near water. 0000005632 00000 n [. a) Door or window edges This may damage your equipment and cause employee injuries. 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). Supply power for tools or equipment on a long-term basis. [Power Tools]. The auger has a one-quarter horsepower motor encased in a metal housing with two handles. 0000012360 00000 n Remove cords from receptacles by pulling on the plugs, not the cords. She has an older drill with a steel housing and a 3-prong plug. The workers had removed their shirts and were sweating. a.Shut off power within a fraction of a second -Damage to internal organs. 0000427811 00000 n 4 0 obj Select the correct answer and then click on DONE. 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 . Protection is lost because it will not trip when the system's load has been exceeded. 2.The person's physical condition 1. -Conductor= permits the free flow of electricity. Take any defective equipment out of service. Do not remove ground prongs from cord- and plug-connected equipment or extension cords. a.20,000 volts Quiz Question 9: Conductor insulation must be approved for the ___________ of use? The following are electrical hazards: Shock. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. Which of the following are caused by contact with electricity? b.30,000 volts 0000002479 00000 n Effective means of controlling power line hazards include: Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. 1.The humidity of the environment b.Ground Fault Critical Interrupter b.811 %PDF-1.4 % Overview. Which of the following can be caused by exposure to an arc flash? When used on the moon? The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ 3. a. 0000110659 00000 n Electrical safety quiz answers are given below. The factors that determine the severity of an electrical injury include: 1. 1452 0 obj <> endobj 0000010155 00000 n xref b. Deductive objects Select the correct answer and then click DONE. 0000000816 00000 n (b) The same reaction can also be classified as a redox reaction. 0000003900 00000 n 2.Flooding The victim used two extension cords to supply power: a home-made cord plugged into an ungrounded receptacle on the pole, and a UL-approved cord extending from the homemade cord to the saw. D. Have an ANSI sticker and an expiration date. When does electricity become hazardous to humans? 0000002122 00000 n c. No, because the electricity is needed on a long-term basis. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: a.Electricity 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! Other protective measures include guarding or insulating the lines. 2.Skin Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. Quiz: Electrical Hazards. (D) None of the above. OSHA 30 Module 6: Personal Protective Equipme, OSHA 30 - Module 16: Recordkeeping & Reporting, OSHA 30 - Module 18: Safety and Health Progra, OSHA 30 - Module 11: Welding, Cutting and Bra, CRJ 200 Limitations (Official-ish) - MODDED (, SERE 100.2 Level A SERE (J3TA-US1329) (Civili, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer, E. Russell Johnston, Ferdinand Beer, Phillip Cornwell. trailer endobj 3.Needs to be reset and more. Draw a line from the item on the left that corresponds to the match on the right. 3 0 obj 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. Switch Which of the following can be the result of electric shock? _5JKy. One hand drill was not grounded, and the other had no safety plate. -Grounding= a conductive connection to the earth which acts as a protective measure. A) Identify; Castigate; C) Evaluate; D) Modify; 3. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. 0000002733 00000 n Explosion. B. outdoors. Of the following choices, which are frequent electrical hazards 0000002385 00000 n 0000420887 00000 n c. Extend the reach of the power tool. How might this event affect the ability of animals to obtain energy to live? b) Staples Get All Answers to OSHA 30 Construction Final Exam. Identify the oxidizing and reducing agents. lex has set up a mobile engine testing station in the maintenance area. 128 0 obj <> endobj xref 128 26 0000000016 00000 n 0000014257 00000 n 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. a.Yes, as it is a mobile engine testing station. =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR Select the correct answer and then click DONE. 0000002386 00000 n A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. 1. d.Metal, Over half of all deaths caused by electricity result from contact with ________. 0000004793 00000 n 2.Complete 2.Using extension cords or electrical tools properly. A. indoors. Frames of non-electrically driven elevator cars to which electric conductors are attached. To be safe, you must think about your job and plan for hazards. 4. OSHA 29 CFR 1910, Subpart S . When current travels through your body - Definition of electric shock. A measure of the energy of motion of the particles in a substance is its _____. Frequently inspect electrical systems to insure that the path to ground is continuous. %PDF-1.4 % Select the correct answer and then click DONE. Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. d) All of the above. 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. Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. Before using the equipment, be sure that the ground wire: stream You need to evaluate the situation you are in and assess your . As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. 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). He may have dropped the extension cord at the site and not heard the connector break. 0000024814 00000 n Select the correct answer and then click DONE. Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). 12 months C. 6 months D. Never Q23. Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. View Answer Answer: 600v 4 . 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. 0000005734 00000 n <<7628BB2D46738F42B2FC6393656F4718>]>> 3.Loss of eyesight 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. The following hazards are the most frequent causes of electrical injuries Contact with Power Lines, Lack of Ground-fault Protection, Path to Ground Missing or Discontinuous, Equipment Not Used in Manner Prescribed, and Improper Use of Extension and Flexible Cords. ZR)!=w|; @uT C0? 0000006866 00000 n Does the fall qualify as an electrical accident? Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. 182 0 obj <> endobj xref 182 41 0000000016 00000 n 0000001814 00000 n 0000421627 00000 n he most common shock-related injuries are: He yelled for his co-workers to disconnect the power, which they did. Electric current cannot exist without an unbroken path to and from the conductor. If a defective power tool gives you an electric shock, how might your muscles react? A 120v. Use only extension cords that are 3-wire type. c.Gasoline Then answer the questions below. 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. 0000005042 00000 n 0000007427 00000 n What do tripped circuit breakers and blown fuses indicate? 0 B 208v. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ The victim signaled the operator of the crane to extend the boom and lower the hoist cable. Select the correct answer and then click DONE. 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. No, because an extension cord would not provide enough power. 1 0 obj Explain the purpose and use of the MyPlate symbol. 4.Must be replaced, Always use a GFCI: He plans to use it over a period of at least six months. 0000001731 00000 n If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. 0000108920 00000 n Co-workers provided CPR, but were unable to revive the victim. 3.Loose nuts Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. Easy to identify Death. No GFCI's were used. vpfuI)],s a.Ground Fault Circuit Insulator Which of the following are insulators of electricity? The source of the shocks -- the saw -- was not replaced. 1.Cuts . An employee was texturing a wall using an air compressor. You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: 1.Damaged cover or insulation 1.Is firmly connected Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? 2.Yes, because he is using a portable power tool. Select the correct answer and then click DONE. % Should Ajay use a GFCI? Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. <> Use non-conductive wood or fiberglass ladders when working near power lines. Computers 3.Body tissue Draw a line from the item on the left that corresponds to the match on the right. OSHA 29 CFR 1910.147 . 1.Fingernails What three things must be present for a current to flow through a conductor. Question 2: Which of the following is NOT a category of electrical burns? 2 0 obj %PDF-1.4 % Question 1: Each year, approximately __________ workers suffer from electricity related injuries. endobj 1. d. 20 feet. The victim provided a path to ground and was electrocuted. Water Which of these can be used as insulating live-line tools for electrical protection. 3.No, because he will not be touching any grounded material when using the tool. Arc Flash. <> b.Shut off power within five minutes of the imbalance Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. 0000001896 00000 n 0000002150 00000 n <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 1. Latoya is using a mixing motor to mix pool chemicals in a plastic drum. D. near other electrical equipment. 0000017163 00000 n Select the correct answer and then click DONE. What factors determine the severity of Dirk's injuries? 2.Loss of muscle control 0000007741 00000 n 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp 0000001672 00000 n Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. Continually audit cords on-site. 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. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) Ajay needs to use a dewatering pump to drain standing water on a construction site. A. wrap tape around the damaged spot to prevent electrical shocks. 0000012944 00000 n c.Touching the motor Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. 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. 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. %PDF-1.5 -Wood. Electrical hazards are life threatening incidents that could happen due to electricity. 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. The workers administered CPR to the victim, but to no avail. *Effects are for voltages less than about 600 volts. 4.No, because he does not need to use an extension cord. 0000007464 00000 n 4. The victim was totally deaf in one ear and suffered diminished hearing in the other. Improper Use of Extension and Flexible Cords. 0000001646 00000 n b.The tool's power cord. 0000001908 00000 n d.The body of the power tool. 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. H. (C) Hot sticks. 0000007116 00000 n A) 120v . Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. What is the minimum clearance distance you must maintain from the power lines? %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 0000414648 00000 n If you are touching any grounded material while using a power tool 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. 2.Something to transport the electrical current -- A conductor. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. 0000422244 00000 n 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 The modification of the plug was not an intended use or prescribed by the manufacturer. 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. How fast would the ball be moving at the moment of release? RZyd Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. a.311 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 Determine duration, frequency, degree of exposure to hazards and physical stress. 1.Is faulty 3. The victim was part of a crew that was constructing a concrete wall. 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: gYpV:+ -If current passes through the body near the heart or brain. 0000055319 00000 n c.Power lines <> Which of the following factors determine how severe an electrical injury might be? 0000002195 00000 n 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. 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. Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage.

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