One handle has a deadman's switch. 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. 1476 0 obj <>stream Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. [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. 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. Select the correct answer and then click DONE. The workers had removed their shirts and were sweating. You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. The modification of the plug was not an intended use or prescribed by the manufacturer. B. 0000001646 00000 n Select the correct answer and then click DONE. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. 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? d) All of the above. HJ=S~68438IR/:VR C Y<7H*$F>ya)N1bTa+'OdzydV9QS]b{}(=q?pH,mt8{Ag ]wp?2N$AfnhBL!jV=6ho)5jA8H`Bkh{T[v\G%b|4| Eo*cF ]TBGjB[r6)WzCkQ;Bx(]*JG;&o0TV.P=s4Gs(&e~}j76,-6at$]r**-I!o66PqK.z "*D OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and 3.Needs to be reset b) By supplying GFCIs, or ground-fault circuit interrupters trailer 0000028595 00000 n lb MKS 1.Damaged cover or insulation 1.When you are using electricity near water [. Additionally, the ground prong was missing and there was no GFCI protection. Determine duration, frequency, degree of exposure to hazards and physical stress. When current travels through your body - Definition of electric shock, Choose the primary cause of an electric shock, Electric shock is caused when current travels through the body, the exits the ground. 0000419562 00000 n 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. 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. 0000003771 00000 n The ________ keeps the electricity on its intended path through the conductor. Quiz Question 2: Which is acceptable when using powdered tools? Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). Underground electrical hazards are: A. 2.Loss of muscle control 1. 0000011060 00000 n c.Power lines 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. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. 1.A source of electrical current to flow. 0000010155 00000 n 0000017336 00000 n 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. a.Ground Fault Circuit Insulator When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. c.The outlet. Examples of Equipment That Can Contact Power Lines. 2. On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. 2.Grease Select the correct answer and then click DONE. 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: Is split 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 Muscular contraction and nerve damage occur; death likely. De-energizing Besides personal bodily injury, what other electrical hazards can be found in the workplace? The victim was part of a crew that was constructing a concrete wall. BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. Effective means of controlling power line hazards include: s\A0W+ Supply power for tools or equipment on a long-term basis. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. 3.Vapor hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l 0 A. wrap tape around the damaged spot to prevent electrical shocks. When current travels through your body - Definition of electric shock. -Wood. a.Electricity 3. 0000000816 00000 n This caused him to fall from the ladder and land in a puddle of water, still holding the saw. 0000021516 00000 n <>>> b.Yes, as it would be too expensive to install more permanent wiring and receptacles. 0000007741 00000 n -Glass. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 4,600. c. No, because the electricity is needed on a long-term basis. In which of the following workplace situations are you at risk for coming into contact with live electrical . 0000089142 00000 n c.Guaranteed Fault Circuit Interrupter What factors determine the severity of Dirk's injuries? Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. Ajay needs to use a dewatering pump to drain standing water on a construction site. The accident site was wet; also, humidity was high and the victim was sweating. When inspecting extension cords, look for: Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. Extension cords may become a trip hazard when: d.The body of the power tool. 0000000816 00000 n Quiz Question 3: Power cords can be damaged by which of the following? xYmo -ER/&@[D,_! 0000002385 00000 n 0000010603 00000 n 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 . Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. 3.Clear b.Shut off power within five minutes of the imbalance OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. 0000004444 00000 n Electrocution. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. d.Metal, Over half of all deaths caused by electricity result from contact with ________. d.50,000 volts. Check your employee's electrical safety knowledge through an electrical safety quiz. Easy to identify %PDF-1.5 -Current= the movement of electrical charge. High humidity The factors that determine the severity of an electrical injury include: Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. 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). % and more. h|UnH}+i-. d. heart attacks. 0000004921 00000 n -Falls. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? 0000012944 00000 n Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. 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). True. 0000427811 00000 n Additionally, the ground prongs were missing from the two cords. (B) Switch sticks. Unless you know otherwise, assume that overhead lines are energized. He may have dropped the extension cord at the site and not heard the connector break. Quiz Question 1: Which of the following is not a category of electrical burns? Apply a warning tag to any defective tool and do not use it until the problem has been corrected. 1 0 obj Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. Improper Use of Extension and Flexible Cords. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. 1.Missing or broken path to ground. 0000000016 00000 n Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. (A) Shotgun sticks. 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: Working with electricity can be dangerous. Burns. Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. stream d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. (b) The same reaction can also be classified as a redox reaction. b.Not wearing insulating shoes or boots when she was handling electrical equipment Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. d. No, because an extension cord would not provide enough power. 0000006893 00000 n 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. The floor is covered in water and she is barefoot. -Voltage= a measure of electrical force. Most of the hydrides of Group 1A and Group 2A metals are ionic. As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. What type of burns are the result of current flowing through and exiting the body? 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. OSHA 29 CFR 1910.147 . 0000005734 00000 n Arc Flash. Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. 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. What is the minimum clearance distance you must maintain from the power lines? Take any defective equipment out of service. 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. 3.Loose nuts 0000005520 00000 n Electrical safety quiz answers are given below. 0000001908 00000 n Is not broken, Question Text: Electrical tools should be grounded with a(n)________. c.Gasoline c.Wood The following references aid in recognizing hazards associated with electrical work. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. Yes, because he will be using electricity near water. endobj The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. Post warning signs. Use non-conductive wood or fiberglass ladders when working near power lines. 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. Using a dry wood ladder when the possibility exists for contact with electricity. b.10 feet c) Establish and enact an assured equipment grounding conductor program (AEGCP) [, Do not modify cords or use them incorrectly. 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. Which of the following are caused by contact with electricity? 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. 0000013716 00000 n SCENARIO: You encounter a co-worker on a residential remodeling job. 0000003900 00000 n Use only extension cords that are marked with a designation code for hard or extra-hard usage. 3. 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. 1452 0 obj <> endobj a. Gaseous matter 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. OSHA 29 CFR 1910, Subpart S . 0000108920 00000 n lex has set up a mobile engine testing station in the maintenance area. )KL3C?e%Y92$,]^)kmR/!8\ JF N'bT\U1+tc+&:'ZuGi!UeUrE [?CrU.&|#@Ed,=2UF]r/n/{v-;v>%/~;[*AxBU,-#!uyFGR,Wv[ cOzObnZfI4ob:pf "~ .iBE@mOs:Os5U9cnU` Vd"F'4Bm?>}hyRQyrX0U026h7#L'. . -Grounding= a conductive connection to the earth which acts as a protective measure. Select the correct answer and then click DONE. A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. If you are touching any grounded material while using a power tool hazard or that their employer is not following OSHA's rules. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB d.Water, Other electrical hazards in the workplace include: The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. %PDF-1.4 % The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. 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. The victim provided a path to ground and was electrocuted. 1. Should he use an extension cord to power it? Should Ajay use a GFCI? OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp 0000018681 00000 n C 277v. 0000001495 00000 n 4.Broken. 1. Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. 0000001672 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 0000002557 00000 n 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. 2.Placed along a wall. Using equipment outdoors that is labeled for use only in dry, indoor locations. 0000004273 00000 n To be safe, you must think about your job and plan for hazards. HWMo#7v#h>6,Z4- startxref Select the correct answer and then click DONE. D 600v. 5.Twitch, Electrical shock may result in: <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Select the correct answer and then click DONE. <> Intentionally creating a low-resistance path that connects to the earth. b.Ground Fault Critical Interrupter . 0000005716 00000 n 1.Flammable liquids Electricity becomes hazardous when it takes an unintended path to complete the ________. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) BE SAFE! The victim signaled the operator of the crane to extend the boom and lower the hoist cable. 0000068035 00000 n b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. 0000002733 00000 n Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. She finds several available in the shop. Which of the following are conductor of electricity? B 208v. Explosion 4.The amount of current, An electrical burn may affect: Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. (3,2,1), (5,4,3). You need to evaluate the situation you are in and assess your . <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 2.The person's physical condition 3.Tears 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+ To avoid injury or death, you must understand and recognize hazards. <> Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. xref 0000004946 00000 n Visually inspect all electrical equipment before use. a. Power was supplied through two extension cords from a nearby residence. 3 0 obj b.Rod . 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? [29 CFR 1926.416(a)(1)]. a.Supply power for tools or equipment on a temporary or short-term basis. 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: RZyd The NEC C. Suggestions 5 feet xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t 1. b.Electrical tools Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. When it completes a circuit through the body. b) Staples 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. gYpV:+ 4 0 obj The following are electrical hazards: Shock. 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream 0000005406 00000 n 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. A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. q>NmnLNmb$"Iyx1bD9.~Ll. 182 0 obj <> endobj xref 182 41 0000000016 00000 n A laborer carried a piece of wire reinforcement (10 feet long by 8 inches wide) along the top section of the scaffold and contacted the power line with it. Explosion. 2.Complete 2. If a defective power tool gives you an electric shock, how might your muscles react? 1. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? Bob is asked to repair some overhead wiring, requiring the use a ladder. Additional minimum clearance distance is required for power lines carrying over ________. =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR Get All Answers to OSHA 30 Construction Final Exam.
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