4. In addition to contact with power lines, the top electrical hazards include: 3.Clear Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. 0000002733 00000 n 2.The person's physical condition xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t (B) Switch sticks. -Grounding= a conductive connection to the earth which acts as a protective measure. Which of the following are caused by contact with electricity? 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. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. a.A small current 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. 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. 0000004884 00000 n vpfuI)],s b.Yes, as it would be too expensive to install more permanent wiring and receptacles. x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q 0000421920 00000 n Which of the following can be caused by exposure to an arc flash? 0000009628 00000 n 3.Draped over equipment. 2.Loss of muscle control When an electric shock occurs, your muscles may: 0000028595 00000 n c.Gasoline d.Adapter, What is a GFCI? ( Post warning signs. 3.Loose nuts 0000005520 00000 n Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. 1.The humidity of the environment When does electricity become hazardous to humans? Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? 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. A. wrap tape around the damaged spot to prevent electrical shocks. 1.Clench Which of the following are conductor of electricity? The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 0 %PDF-1.4 % Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. 1. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. Which of the following are insulators of electricity? Apply a warning tag to any defective tool and do not use it until the problem has been corrected. To be safe, you must think about your job and plan for hazards. 0000007464 00000 n c. Inductive objects Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. b.Yes, because Bob was on . She has an older drill with a steel housing and a 3-prong plug. -Rubber. 4.No, because he does not need to use an extension cord. ZR)!=w|; @uT C0? OSHA 29 CFR 1910, Subpart S . c.Wood 0000013716 00000 n Select the correct answer and then click DONE. 0000002403 00000 n b.Ground Fault Critical Interrupter 0000420887 00000 n 2.Flooding <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> As she is adding in the chemicals, her hand touches the motor and it becomes energized. 3 0 obj Electrical current travels through insulated ________. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. Use only extension cords that are 3-wire type. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. Frames of non-electrically driven elevator cars to which electric conductors are attached. 0000005734 00000 n (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. Supply power for tools or equipment on a long-term basis. <>/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. A) 120v . Equipment used in manner prescribed. 0000001495 00000 n Using tools and equipment that can contact power lines increases the risk. -Glass. 2 0 obj 0000001731 00000 n 1 0 obj Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. OSHA 29 CFR 1910, Subpart P . endobj How might this event affect the ability of animals to obtain energy to live? 0000004921 00000 n c.911 a.Yes, because the electrical shock caused the fall. 0000004793 00000 n Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. Death. b. Deductive objects 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. Bob is asked to repair some overhead wiring, requiring the use a ladder. 0000024814 00000 n q>NmnLNmb$"Iyx1bD9.~Ll. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. 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. a.Shut off power within a fraction of a second What is the output of the program in Exercise 17, if first = 26 and second = 8? b. he most common shock-related injuries are: Then answer the questions below. b.Electrical tools 1.Is faulty Select the correct answer and then click DONE. 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 d.Metal, Over half of all deaths caused by electricity result from contact with ________. 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. Burns. 0000001672 00000 n d.Add more outlets. 0000006893 00000 n a.Your thumb. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. A co-worker disconnected the power cord to the saw, too late to save the victim. 3. %PDF-1.4 % trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream -Wood. [29 CFR 1926.416(a)(1)]. 0000007427 00000 n Is not painted over 4.Flex 1452 0 obj <> endobj Select the correct answer and then click DONE. endobj De-energizing In which of the following workplace situations are you at risk for coming into contact with live electrical . <>>> I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB 0000001861 00000 n gYpV:+ 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. 1. Use tools and equipment according to the instructions included in their listing, labeling or certification. [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. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Intentionally creating a low-resistance path that connects to the earth. 0000002195 00000 n 1.Extension cords View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. Yes, because he will be using electricity near water. Determine duration, frequency, degree of exposure to hazards and physical stress. 0000003603 00000 n Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. 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. Select the correct answer and then click DONE. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ 128 0 obj <> endobj xref 128 26 0000000016 00000 n stream Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). 0000110659 00000 n 4.The amount of current, An electrical burn may affect: c.15 feet Dust D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. Select the choices that accurately define the common electrical term. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? 5. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. She finds several available in the shop. 0000007741 00000 n d.Constructive objects, Select all answers that apply to the following statement and then click DONE. _5JKy. [Flexible Cords and Power Tools]. 2.Loose bolts lb MKS Quiz Question 3: Power cords can be damaged by which of the following? 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. Wearing a baseball cap Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. xYmo -ER/&@[D,_! a. 1. (C) Hot sticks. 0000055319 00000 n Isolating, Power lines may be located underground. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) a.Two-prong plug 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. You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. Switch 0000005050 00000 n What do tripped circuit breakers and blown fuses indicate? 0000002122 00000 n d.A power tool, A GFCI is designed to: Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires -Voltage= a measure of electrical force. d. No, because an extension cord would not provide enough power. The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. b.10 feet 0000001814 00000 n The small electrical current enters his body through his left leg. and more. The floor is covered in water and she is barefoot. %PDF-1.5 . Best practices with power lines include: Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. V1?`T`P``ya W3 |"H36K1A@, rO(V[|NAT30 qI? endstream endobj 221 0 obj <>/Filter/FlateDecode/Index[30 152]/Length 27/Size 182/Type/XRef/W[1 1 1]>>stream c.40,000 volts 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. 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 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. Electricity will form a "path" or "loop". OSHA will keep all identities confidential. Overview. b. Safe operation of hand and portable powered tools and other hand-held equipment. Electrical Contractors Industry. Effective means of controlling power line hazards include: Frequently inspect electrical systems to insure that the path to ground is continuous. 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 . Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. 4 0 obj Select the correct answer and then click DONE. 4.Must be replaced, Always use a GFCI: On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. Of the following choices, which are frequent electrical hazards a.Electricity View Answer Answer: 600v 4 . Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. 4.Cardiac arrest 1. Fire 1476 0 obj <>stream Using equipment outdoors that is labeled for use only in dry, indoor locations. D 600v. 3.Loss of eyesight The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. -Damage to internal organs. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream 2 0 obj 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. Additional minimum clearance distance is required for power lines carrying over ________. Which of the following can be the result of electric shock? A) Identify; Castigate; C) Evaluate; D) Modify; 3. 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? 0000000816 00000 n These short objective type questions with answers are very important for competitive exams as well as Board exams. Quiz Question 7: Which is not an insulator? 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. b.Not wearing insulating shoes or boots when she was handling electrical equipment 2.Is working properly A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. a.Extension cords Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. 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. What factors determine the severity of Dirk's injuries? Select the correct answer and then click DONE. He may have dropped the extension cord at the site and not heard the connector break. 5 feet Outlets Cardiac arrest or death - A result of electrical shock. No GFCI's were used. 1.Cuts Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. 1.Flammable liquids Quiz: Electrical Hazards. 2. 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. 0000001896 00000 n a.Supply power for tools or equipment on a temporary or short-term basis. 0000003640 00000 n The accident site was wet; also, humidity was high and the victim was sweating. 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. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. 3. 0000012360 00000 n Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. 1.Missing or broken path to ground. d. heart attacks. 12 months C. 6 months D. Never Q23. -Falls. Best Practices with Power Lines 1. 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. |tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s The victim provided a path to ground and was electrocuted. H. 0000068035 00000 n 0000022637 00000 n 4. 0000006866 00000 n Electrical Hazards Electrical hazards can be found in nearly every roofing work site. Question 2: Which of the following are ways employers must protect their employees on the workplace? D. near other electrical equipment. 2.Something to transport the electrical current -- A conductor. 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: OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. 3 0 obj hazard or that their employer is not following OSHA's rules. b+t6W' te+.W_{8u7Dt@1c. Take any defective equipment out of service. The following references aid in recognizing hazards associated with electrical work. 2. 3.When you are using portable power tools True. Which group would be more accurate when used in an accelerating spaceship? 0000002385 00000 n To avoid injury or death, you must understand and recognize hazards. -If current passes through the body near the heart or brain. 0000422244 00000 n -Current= the movement of electrical charge. d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs Lockout/tagout procedures. 2.Skin If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 0000011060 00000 n 2. A measure of the energy of motion of the particles in a substance is its _____. Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. Explain the purpose and use of the MyPlate symbol. gYpV:+ Select the correct answer and then click DONE. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) <<7628BB2D46738F42B2FC6393656F4718>]>> 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. The ground wire was not attached on the male end of the cord's plug. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. b.30,000 volts 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 Look for overhead power lines and buried power line indicators. 2.Yes, because he is using a portable power tool. Is the west coast of Africa a plate boundary? Which of the following are insulators of electricity? While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. 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. 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. 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+ a.311 What type of burns are the result of current flowing through and exiting the body? 0000001604 00000 n Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? This caused him to fall from the ladder and land in a puddle of water, still holding the saw. 4.Running through doorways. De-energize and ground lines when working near them. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. Which of the following part of you body can burn if you come in contact with electricity? a.20,000 volts Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. 0000017163 00000 n b.The tool's power cord. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: 0000420277 00000 n 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. You need to evaluate the situation you are in and assess your . 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. c.falls. Electrocution. You should? The most dangerous place to use electrical equipment is? startxref h|UnH}+i-. The workers had removed their shirts and were sweating. The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. Select the correct answer and then click DONE. Select the correct answer and then click DONE. Lx*jWP# /c2)|]NXqAx>=~'[ 2.Placed along a wall. 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. a.Conductive objects (E) a, b, and c. 2. 2. Freeze 0000001116 00000 n Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. 0000000016 00000 n 0000004208 00000 n Use non-conductive wood or fiberglass ladders when working near power lines. b) By supplying GFCIs, or ground-fault circuit interrupters 0000010603 00000 n

Motorcyclist Killed Los Angeles Today, Church For Rent Craigslist, Jserra Baseball Tournament 2021, Articles W