2. 0000055319 00000 n 0000003413 00000 n d. 411, You are working with a 10-foot section of a conductive pipe near power lines. 0000003900 00000 n I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB Quiz Question 2: Which is acceptable when using powdered tools? This may damage your equipment and cause employee injuries. *Effects are for voltages less than about 600 volts. 0000002403 00000 n Get All Answers to OSHA 30 Construction Final Exam. 4. 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. h|UnH}+i-. The auger then fell across the other worker, the 24-year-old victim. % trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? Select the correct answer and then click DONE. using a 30-amp breaker in a system with 15- or 20-amp receptacles. 1. 1.Damaged cover or insulation 30 days B. Question 1: Which of the following is a danger of electricity? d) All of the above. d. heart attacks. Question 4: Which of the following is a type of burn caused by electrical hazards? 0000000816 00000 n %PDF-1.5 2 0 obj Electrical Contractors Industry. 2.Loose screws 0000017336 00000 n Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. One hand drill was not grounded, and the other had no safety plate. 0000420564 00000 n Visually inspect all electrical equipment before use. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. What is the minimum clearance distance you must maintain from the power lines? 0000056642 00000 n 2.Something to transport the electrical current -- A conductor. He yelled for his co-workers to disconnect the power, which they did. 1. 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? c. Extend the reach of the power tool. The modification of the plug was not an intended use or prescribed by the manufacturer. 0000414648 00000 n Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. 1.Missing A) 120v . 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 0000003715 00000 n a) Ensure overhead power line safety -Falls. a.Two-prong plug =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR 182 0 obj <> endobj xref 182 41 0000000016 00000 n Suppose you could convert the 525525525 Calories in the cheeseburger you ate for lunch into mechanical energy with 100%100 \%100% efficiency and you throw a 0.145kg0.145~\mathrm{kg}0.145kg baseball with the energy contained in the cheeseburger. 0000004274 00000 n stream Effective means of controlling power line hazards include: c. Inductive objects 4.Cardiac arrest A. indoors. OSHA 10-Hour Safety Course - Electrical Safety Page 5 of 5 Use the three-stage safety model to stay safe: recognize, evaluate, and control hazards. These short objective type questions with answers are very important for competitive exams as well as Board exams. 128 0 obj <> endobj xref 128 26 0000000016 00000 n 2.Grease 4. <<7628BB2D46738F42B2FC6393656F4718>]>> The ________ keeps the electricity on its intended path through the conductor. D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. -Rubber. b.10 feet 0000007464 00000 n d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs Should Ajay use a GFCI? 0000005632 00000 n Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . 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. 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 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. Death. b.Metal 0000006866 00000 n This is action is also known as creating or completing an electrical circuit. HWMo#7v#h>6,Z4- 2.Placed along a wall. c. Match the color of the tool to the color of the extension cord. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. Select the correct answer and then click 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 . 0000022637 00000 n xref 0000004965 00000 n 2.Is working properly Post warning signs. Electrocution. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. In which of the following workplace situations are you at risk for coming into contact with live electrical . 5 feet OSHA requires the testing of a volt meter after a voltage test on voltage above_____. c.A measurement of electricity 1.A source of electrical current to flow. 1. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. d.Water, Other electrical hazards in the workplace include: Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. 3.Vapor D. near other electrical equipment. Additionally, the ground prongs were missing from the two cords. Muscular contraction and nerve damage occur; death likely. c.Absorb any water around the area Continually audit cords on-site. Which of the following part of you body can burn if you come in contact with electricity? Quiz Question 3: Power cords can be damaged by which of the following? Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. b.811 Which of the following can be the result of electric shock? c. No, because the electricity is needed on a long-term basis. d.The body of the power tool. endobj 0000001814 00000 n Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. When it completes a circuit through the body. 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. You should? 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 workers had removed their shirts and were sweating. Intentionally creating a low-resistance path that connects to the earth. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. <> a.related to muscle damage. Select the correct answer and then click DONE. BE SAFE! 0000004921 00000 n A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. Test your knowledge with our electrical safety quiz below. A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. 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. Of the following choices, which are frequent electrical hazards The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. Easy to identify Select the correct answer and then click DONE. Using equipment outdoors that is labeled for use only in dry, indoor locations. 0000004273 00000 n xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t c.Touching the motor Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. he most common shock-related injuries are: 3. (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. 0000108653 00000 n 2.Skin 0000000816 00000 n 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. 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). Using cords or tools with worn insulation or exposed wires. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ Select the choices that accurately define the common electrical term. 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. Electrical hazards are life threatening incidents that could happen due to electricity. Regarding hand protection employers should: A. 0000001116 00000 n 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. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. The contact lasts for 5 seconds before someone is able to shut off the power. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). 0000002195 00000 n 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 3 0 obj When does electricity become hazardous to humans? Examples Of Electrical Hazards. -Wood. OSHA 29 CFR 1910, Subpart P . 2.Using an aluminum ladder when the possibility exists for contact with electricity. a.Your thumb. endobj . 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! 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. 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$]r**-I!o66PqK.z "*D Hand-operated metal shifting ropes or cables of electric elevators. 0000006152 00000 n s\A0W+ Explain the purpose and use of the MyPlate symbol. d.50,000 volts. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) c.Guaranteed Fault Circuit Interrupter Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. 0000001908 00000 n Question 1: Which of these is a type of Ground Fault Circuit Adapter? If a defective power tool gives you an electric shock, how might your muscles react? 0000021516 00000 n Which of these can be used as insulating live-line tools for electrical protection. How fast would the ball be moving at the moment of release? c.15 feet Does the fall qualify as an electrical accident? Look for overhead power lines and buried power line indicators. One handle has a deadman's switch. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> (b) The same reaction can also be classified as a redox reaction. When an electric shock occurs, your muscles may: Before work began, the company safety director made sure that insulated line hoses were placed over sections of the the power line near the jobsite and that a safety clearance zone was marked off for arriving cement trucks. An employee was texturing a wall using an air compressor. Stay at least 10 feet away from overhead power lines. 0000089142 00000 n OSHA will keep all identities confidential. 3.Draped over equipment. d.Alert workers of any water in the area, GFCI is an acronym for: )KL3C?e%Y92$,]^)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'. H. Other protective measures include guarding or insulating the lines. Which of the following are conductor of electricity? 4.Flex trailer Question 2: Which of the following are ways employers must protect their employees on the workplace? :$#k9BPnZ{Qqe/reKy,'ZlB# 3. . Select the correct answer and then click DONE. a.20,000 volts Is not painted over 4,600. The NEC C. Suggestions