which of the following are electrical hazards osha quizlet

xref 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. These short objective type questions with answers are very important for competitive exams as well as Board exams. Then answer the questions below. 0000014257 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. 0000055319 00000 n 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 Explosion 0000004921 00000 n 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. No GFCI's were used. 0000010603 00000 n (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. b.Rod Ground all power supply systems, electrical circuits, and electrical equipment. Best Practices with Power Lines 1. As she is adding in the chemicals, her hand touches the motor and it becomes energized. Does the fall qualify as an electrical accident? :$#k9BPnZ{Qqe/reKy,'ZlB# Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> d. 20 feet. x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q 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 0000006866 00000 n 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. Select the correct answer and then click DONE. 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. 1.A source of electrical current to flow. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. 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. a. Look for overhead power lines and buried power line indicators. SCENARIO: You encounter a co-worker on a residential remodeling job. What is the most common, non-fatal, electrical shock-related injury? c.A measurement of electricity 0000419562 00000 n The small electrical current enters his body through his left leg. Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. Death. (D) None of the above. He yelled for his co-workers to disconnect the power, which they did. hazard or that their employer is not following OSHA's rules. 0000108920 00000 n % OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 3.Loose nuts Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 0000108653 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 . 1 0 obj 2. 4,600. 4.Flex 2.The person's physical condition A) 120v . While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. a.311 3. De-energize and ground lines when working near them. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. Question 2: Which of the following is NOT a category of electrical burns? The victim provided a path to ground and was electrocuted. <> 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. c.Absorb any water around the area Is not broken, Question Text: Electrical tools should be grounded with a(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. Select the correct answer and then click DONE. Extension cords may become a trip hazard when: 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. specifically addresses electrical protective devices. 1452 25 0000008392 00000 n *Effects are for voltages less than about 600 volts. 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. Provides information about the hazards that electrical workers may experience as a part of their jobs. Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. endobj As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. It is important to note that NFPA 70E is a . The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . Take any defective equipment out of service. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) 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. 0000004273 00000 n 0000012944 00000 n a.Yes, because the electrical shock caused the fall. Additionally, the ground prongs were missing from the two cords. 0000001731 00000 n The most dangerous place to use electrical equipment is? b.Metal Which of these can be used as insulating live-line tools for electrical protection. Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ Continually audit cords on-site. A) Identify; Castigate; C) Evaluate; D) Modify; 3. The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. Regarding hand protection employers should: A. 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: Extension cords had poor splices, no grounds, and reversed polarity. Check your employee's electrical safety knowledge through an electrical safety quiz. %PDF-1.4 % 3.Vapor You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. Before using the equipment, be sure that the ground wire: Unless you know otherwise, assume that overhead lines are energized. Electrical Safety Multiple Choice Questions and Answers for competitive exams. This may damage your equipment and cause employee injuries. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. c.40,000 volts 0000004946 00000 n Used across walkways. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. 1.Pain Fire 4.Running through doorways. Question 2: Which of the following are ways employers must protect their employees on the workplace? You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. Post warning signs. 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. (b) The same reaction can also be classified as a redox reaction. In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. The NEC C. Suggestions 1.Is firmly connected 3 0 obj Electrical safety quiz answers are given below. Cardiac arrest or death - A result of electrical shock. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t endobj When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 0000007427 00000 n 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. H. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. Select the correct answer and then click DONE. 0000002150 00000 n [. Examples Of Electrical Hazards. 0000005632 00000 n Apply a warning tag to any defective tool and do not use it until the problem has been corrected. When does electricity become hazardous to humans? c. Inductive objects A 120v. Quiz: Electrical Hazards. 0000001814 00000 n [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. lb MKS d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. a.Supply power for tools or equipment on a temporary or short-term basis. 0000000816 00000 n Power was supplied through two extension cords from a nearby residence. Lockout/tagout procedures. Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. -Wood. b.811 4. 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! Select the correct answer and then click DONE. Besides personal bodily injury, what other electrical hazards can be found in the workplace? If a worker has been retaliated against for using their rights, they 4.The amount of current, An electrical burn may affect: Be sure equipment that has been shop fabricated or altered is in compliance. d.Alert workers of any water in the area, GFCI is an acronym for: How will she choose the correct cord? 2.Using extension cords or electrical tools properly. One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. 0000414648 00000 n a) Door or window edges Using tools and equipment that can contact power lines increases the risk. 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. C. near water. -Voltage= a measure of electrical force. a.Electricity 3.Body tissue [Power Tools]. <<7628BB2D46738F42B2FC6393656F4718>]>> As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 0000018681 00000 n Which of the following injuries can occur when muscles flex or twitch from an electrical shock? 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. 0000007694 00000 n Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. 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. . startxref 3. 0000002557 00000 n The victim was part of a crew that was constructing a concrete wall. 3 0 obj D 600v. 4.Broken. Most of the hydrides of Group 1A and Group 2A metals are ionic. a.Yes, as it is a mobile engine testing station. d.Adapter, What is a GFCI? 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. b.Ground Fault Critical Interrupter You should? D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. 0000002479 00000 n How fast would the ball be moving at the moment of release? She finds several available in the shop. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. Out of several possible scenarios, the most likely was contact between the exposed wires of an extension cord and a screw that protruded from the receptacle, which had its face plate removed. When used on the moon? d.Metal, Over half of all deaths caused by electricity result from contact with ________. One handle has a deadman's switch. Ajay needs to use a dewatering pump to drain standing water on a construction site. Improper Use of Extension and Flexible Cords. a. Gaseous matter Which of the following factors determine how severe an electrical injury might be? 0000420887 00000 n 0000003640 00000 n Select the correct answer and then click DONE. 1. As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. 1476 0 obj <>stream Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. . 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. An OSHA inspection revealed that the tool's original power cord had been replaced with a flat cord, which was not designated for hard service, and that strain relief was not provided at the point where the cord entered the tool. b. Deductive objects d. 411, You are working with a 10-foot section of a conductive pipe near power lines. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. 3.Something that causes current to flow through the . Select the correct answer and then click DONE. endobj 5 feet Best practices with power lines include: Working with electricity can be dangerous. 0000003715 00000 n 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. Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? Use non-conductive wood or fiberglass ladders when working near power lines. 0000003254 00000 n Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? d. No, because an extension cord would not provide enough power. 0000024814 00000 n b.burns. 3.When you are using portable power tools 2.Placed along a wall. The ________ keeps the electricity on its intended path through the conductor. gYpV:+ 2.Flooding g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream Select the correct answer and then click DONE. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). A measure of the energy of motion of the particles in a substance is its _____. Lx*jWP# /c2)|]NXqAx>=~'[ d. Match the outlet prongs to the extension cord. 2 0 obj 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. 3.Loss of eyesight (C) Hot sticks. 0000002122 00000 n 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). Apparently, his hand contracted and he was "locked" to the saw. b. %PDF-1.5 _5JKy. 2. 2. <> Which of the following can be caused by exposure to an arc flash? Select the choices that accurately define the common electrical term. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. 2. b.A fast-acting switch monitoring current flow The workers had removed their shirts and were sweating. D. Have an ANSI sticker and an expiration date. b.Electrical tools -Falls. 4. qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? Using multi-receptacle boxes designed to be. Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. 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. c.Three-prong plug After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. b. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. To be safe, you must think about your job and plan for hazards. gYpV:+ OSHA 29 CFR 1910, Subpart S . 4.No, because he does not need to use an extension cord. 2 0 obj 0000422244 00000 n -Glass. Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l d. Power outlets, ________ are anything that can transmit electrical current. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. 182 0 obj <> endobj xref 182 41 0000000016 00000 n Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies.

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