0000000816 00000 n 4 0 obj 4.Running through doorways. d.Water, Other electrical hazards in the workplace include: Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? The modification of the plug was not an intended use or prescribed by the manufacturer. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? % 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. <> 0000002733 00000 n 0000004921 00000 n Which of these can be used as insulating live-line tools for electrical protection. He yelled for his co-workers to disconnect the power, which they did. Select the correct answer and then click DONE. B 208v. It is important to note that NFPA 70E is a . 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. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? -If current passes through the body near the heart or brain. 1.Clench (D) None of the above. 1.Missing 0000011060 00000 n Which of the following are conductor of electricity? Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. c. Match the color of the tool to the color of the extension cord. 0000022637 00000 n OSHA 29 CFR 1910.147 . A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. 4. a.Shut off power within a fraction of a second Ground all power supply systems, electrical circuits, and electrical equipment. A. wrap tape around the damaged spot to prevent electrical shocks. 0000013716 00000 n 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: This is action is also known as creating or completing an electrical circuit. 0 You should? Extension cords had poor splices, no grounds, and reversed polarity. 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. The following are electrical hazards: Shock. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Easy to identify The ground wire was not attached on the male end of the cord's plug. 0000024814 00000 n Before using the equipment, be sure that the ground wire: Additional minimum clearance distance is required for power lines carrying over ________. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. OSHA Safety and Health Topics Page. What is the most common, non-fatal, electrical shock-related injury? Visually inspect all electrical equipment before use. 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. Looking for NFPA 70E Certification? C 277v. Which of the following part of you body can burn if you come in contact with electricity? OSHA 29 CFR 1910, Subpart S . The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. 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. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. 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: Outlets -Current= the movement of electrical charge. 1.Flammable liquids 0000003771 00000 n 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 Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream 3. Electricity will form a "path" or "loop". 4,600. 1. 0000005520 00000 n Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 0000007464 00000 n When it completes a circuit through the body. Explosion gYpV:+ 0000057373 00000 n In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. Quiz: Electrical Hazards. 0000006152 00000 n 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. If you are touching any grounded material while using a power tool Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. In addition to contact with power lines, the top electrical hazards include: The accident site was wet; also, humidity was high and the victim was sweating. 3. The following references aid in recognizing hazards associated with electrical work. 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. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Is not painted over 2.Grease 0000108920 00000 n Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? 0000000016 00000 n The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. RZyd Frames of non-electrically driven elevator cars to which electric conductors are attached. Use only cords, connection devices, and fittings that are equipped with strain relief. 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. Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. 2.Complete Use non-conductive wood or fiberglass ladders when working near power lines. d.Add more outlets. Which of the following can be the result of electric shock? The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. Death. a) Door or window edges c.Gasoline A measure of the energy of motion of the particles in a substance is its _____. Electrocution. Underground electrical hazards are: A. As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. trailer using a 30-amp breaker in a system with 15- or 20-amp receptacles. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. 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. Question 1: Each year, approximately __________ workers suffer from electricity related injuries. 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. A 120v. Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. Should he use an extension cord to power it? 2.Placed along a wall. 2.The person's physical condition Carly needs to use an extension cord with her corded nail gun. 2.Loss of muscle control Using tools and equipment that can contact power lines increases the risk. Contact utilities for buried power line locations. 4.No, because he does not need to use an extension cord. b+t6W' te+.W_{8u7Dt@1c. B. outdoors. and more. Working with electricity can be dangerous. Explosion. Additionally, the ground prongs were missing from the two cords. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) OSHA 29 CFR 1910, Subpart P . b. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. 0000004946 00000 n *Effects are for voltages less than about 600 volts. a.Two-prong plug 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 0000004884 00000 n Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. 1. a.Standing in water d.Adapter, What is a GFCI? 1. (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. The victim provided a path to ground and was electrocuted. 0000014257 00000 n What type of burns are the result of current flowing through and exiting the body? 0000001672 00000 n 3.Clear 1. Using a dry wood ladder when the possibility exists for contact with electricity. Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. Which of the following factors determine how severe an electrical injury might be? 1.Is firmly connected 4.Flex 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 hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l lex has set up a mobile engine testing station in the maintenance area. Extension cords may become a trip hazard when: !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ Question 3: A/an ____________ is a unit of measurement for electrical resistance. If a worker has been retaliated against for using their rights, they endobj endobj Select the correct answer and then click DONE. 1. 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. 128 0 obj <> endobj xref 128 26 0000000016 00000 n On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. These short objective type questions with answers are very important for competitive exams as well as Board exams. Select the correct answer and then click DONE. Electrical Safety Multiple Choice Questions and Answers for competitive exams. Electricity becomes hazardous when it takes an unintended path to complete the ________. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. d) All of the above. Then answer the questions below. What factors determine the severity of Dirk's injuries? Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. Does the fall qualify as an electrical accident? Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. 0000002876 00000 n c.A measurement of electricity b.The tool's power cord. Select the correct answer and then click DONE. A) Identify; Castigate; C) Evaluate; D) Modify; 3. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! Select the choices that accurately define the common electrical term. 0000002122 00000 n D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. 0000002479 00000 n 3.Loss of eyesight Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. Question 2: Which of the following are ways employers must protect their employees on the workplace? 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp Is split 0000005050 00000 n Overview. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. Electrical safety quiz answers are given below. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . 4. %PDF-1.4 % 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! 2.Grounding Power was supplied through two extension cords from a nearby residence. 0000089142 00000 n Improper Use of Extension and Flexible Cords. When inspecting extension cords, look for: OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. 182 0 obj <> endobj xref 182 41 0000000016 00000 n Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires Which of the following are insulators of electricity? trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. 4. Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. Explain the purpose and use of the MyPlate symbol. xYmo -ER/&@[D,_! Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? The small electrical current enters his body through his left leg. 0000000816 00000 n 3. Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. a.Yes, as it is a mobile engine testing station. 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. Dust 3. Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. B. The victim was part of a crew that was constructing a concrete wall. b.10 feet a) Ensure overhead power line safety 0000015549 00000 n (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) -Glass. When does electricity become hazardous to humans? OSHA will keep all identities confidential. 0000003640 00000 n He plans to use it over a period of at least six months. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. . a.Conductive objects Get All Answers to OSHA 30 Construction Final Exam. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB Test your knowledge with our electrical safety quiz below. :$#k9BPnZ{Qqe/reKy,'ZlB# 0000012944 00000 n 3. 0000004686 00000 n 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 Contractors Industry. Which of the following are caused by contact with electricity? [, Use all equipment according to the manufacturer's instructions. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. -Conductor= permits the free flow of electricity. 2. 0000002403 00000 n 0000068035 00000 n 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. 1.Extension cords 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. 3.Body tissue If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. d) All of the above. b.burns. 2. Which of the following can be caused by exposure to an arc flash? Potential hazards of electricity are preventable if you do which of the following listed below? Burns. 0000003603 00000 n c.Absorb any water around the area A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. Other protective measures include guarding or insulating the lines. Electrical hazards are life threatening incidents that could happen due to electricity. %PDF-1.5 0000005716 00000 n 30 days B. Select the correct answer and then click DONE. 3 0 obj -Falls. Regarding hand protection employers should: A. x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q Select the correct answer and then click DONE. High humidity Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. 0000002385 00000 n 12 months C. 6 months D. Never Q23. 3.Draped over equipment. 3.Loose nuts 2.Using extension cords or electrical tools properly. The workers had removed their shirts and were sweating. c. Extend the reach of the power tool. 1452 25 Select the correct answer and then click DONE. 0000010603 00000 n Continually audit cords on-site. a.Supply power for tools or equipment on a temporary or short-term basis. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. Using cords or tools with worn insulation or exposed wires. Frequently inspect electrical systems to insure that the path to ground is continuous. (3,2,1), (5,4,3). Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. 0000002195 00000 n After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. Examples of Equipment That Can Contact Power Lines. 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. 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. True. 0000012360 00000 n 5. c) Establish and enact an assured equipment grounding conductor program (AEGCP) A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. 0000003715 00000 n startxref %PDF-1.4 % 3.Something that causes current to flow through the . 2 0 obj Hand-operated metal shifting ropes or cables of electric elevators. 2. d.A power tool, A GFCI is designed to: 0000018681 00000 n 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 Select the correct answer and then click DONE. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical .