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Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. 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 b.Metal 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. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. a.Standing in water Using a dry wood ladder when the possibility exists for contact with electricity. Muscular contraction and nerve damage occur; death likely. The following are electrical hazards: Shock. True. Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? Safe operation of hand and portable powered tools and other hand-held equipment. 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. Regarding hand protection employers should: A. 0000007116 00000 n Supply power for tools or equipment on a long-term basis. Remove cords from receptacles by pulling on the plugs, not the cords. c.911 B. outdoors. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? 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. <>>> When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: Equipment used in manner prescribed. endobj endobj B. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. 0000002195 00000 n :$#k9BPnZ{Qqe/reKy,'ZlB# The victim was part of a crew that was constructing a concrete wall. b.Ground Fault Critical Interrupter 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. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ Electrical Safety Multiple Choice Questions and Answers for competitive exams. Use only extension cords that are 3-wire type. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. Does the fall qualify as an electrical accident? Question 2: Which of the following are ways . <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. Should Ajay use a GFCI? Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. 3. Which of the following can be caused by exposure to an arc flash? 2 0 obj 0000055319 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. 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. 0000001908 00000 n Additional minimum clearance distance is required for power lines carrying over ________. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. 0000001672 00000 n endobj 0000000816 00000 n 0000003640 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 . Select the correct answer and then click DONE. [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. Does the fall qualify as an electrical accident? The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. d. heart attacks. a.Yes, because the electrical shock caused the fall. 1.Is firmly connected a. 0000002386 00000 n Potential hazards of electricity are preventable if you do which of the following listed below? Which of the following factors determine how severe an electrical injury might be? [, Do not modify cords or use them incorrectly. 3.Needs to be reset Question 1: Which of the following is a danger of electricity? The accident site was wet; also, humidity was high and the victim was sweating. *Effects are for voltages less than about 600 volts. What type of burns are the result of current flowing through and exiting the body? 0000001861 00000 n 1.Extension cords While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. c.A measurement of electricity Contact utilities for buried power line locations. 0000414648 00000 n c.Touching the motor An employee was texturing a wall using an air compressor. 4.Running through doorways. Which of the following can be the result of electric shock? a.Yes, as it is a mobile engine testing station. 0000004946 00000 n 2.Using extension cords or electrical tools properly. She finds several available in the shop. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 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. 0000004793 00000 n 0000003771 00000 n 1.Clench 0000004208 00000 n 4 0 obj Co-workers provided CPR, but were unable to revive the victim. 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. 0000001814 00000 n What is the primary purpose of properly grounding equipment? Ground all exposed metal parts of equipment. 1.Flammable liquids . 0000004686 00000 n 4.Flex A measure of the energy of motion of the particles in a substance is its _____. 0000005520 00000 n When inspecting extension cords, look for: 4 0 obj % A doubly ionized lithium atom (Li2+,Z=3)\left(\mathrm{Li}^{2+}, \mathrm{Z}=3\right)(Li2+,Z=3) is in n=4n=4n=4 Bohr orbit. Use non-conductive wood or fiberglass ladders when working near power lines. c) Age uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. 0000004273 00000 n Explosion [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. Unless you know otherwise, assume that overhead lines are energized. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. Select the correct answer and then click DONE. Select the correct answer and then click DONE. c.Three-prong plug 3.Loss of eyesight Select the correct answer and then click on DONE. startxref Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? -Wood. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. Electric current cannot exist without an unbroken path to and from the conductor. b. Deductive objects 0000110659 00000 n Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. a) Ensure overhead power line safety hazard or that their employer is not following OSHA's rules. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. 0000001896 00000 n c.Absorb any water around the area A 120v. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. 0000005734 00000 n Select the choices that accurately define the common electrical term. a.Shut off power within a fraction of a second (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) c.Wood When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. 4.No, because he does not need to use an extension cord. c. Inductive objects De-energizing High humidity Effective means of controlling power line hazards include: 0000422244 00000 n The auger has a one-quarter horsepower motor encased in a metal housing with two handles. Frequently inspect electrical systems to insure that the path to ground is continuous. Select the correct answer and then click DONE. 0000003900 00000 n (D) None of the above. <<7628BB2D46738F42B2FC6393656F4718>]>> The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. b. h|UnH}+i-. Determine duration, frequency, degree of exposure to hazards and physical stress. A co-worker disconnected the power cord to the saw, too late to save the victim. Select the choices that accurately define the common electrical term. <> Select the correct answer and then click DONE. What three things must be present for a current to flow through a conductor. Question 2: Which of the following are ways employers must protect their employees on the workplace? 2.Loose screws Which of these can be used as insulating live-line tools for electrical protection. 1. In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. a.related to muscle damage. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 0000004444 00000 n 0000001731 00000 n d) All of the above. 1.When you are using electricity near water What was Latoya's first mistake? He may have dropped the extension cord at the site and not heard the connector break. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. Overview. The most dangerous place to use electrical equipment is? 1.Missing 2.Loss of muscle control Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. [. Provide a safe path to earth ground for electricity. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. Death is probable. The modification of the plug was not an intended use or prescribed by the manufacturer. HWMo#7v#h>6,Z4- Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. 0000001116 00000 n _5JKy. Electrical Hazards Electrical hazards can be found in nearly every roofing work site. 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. % 0000003413 00000 n b. 4,600. How will she choose the correct cord? 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. She has an older drill with a steel housing and a 3-prong plug. You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. Match the length from job to outlet. 0000004274 00000 n SCENARIO: You encounter a co-worker on a residential remodeling job. 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. Before using the equipment, be sure that the ground wire: In which of the following workplace situations are you at risk for coming into contact with live electrical . Visually inspect all electrical equipment before use. 0000010155 00000 n c.Guaranteed Fault Circuit Interrupter 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. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. -Conductor= permits the free flow of electricity. 0000008392 00000 n Ground all power supply systems, electrical circuits, and electrical equipment. a.A small current 0000018681 00000 n 4. If a worker has been retaliated against for using their rights, they 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. Death. 2.Loose bolts 1452 0 obj <> endobj Frames of non-electrically driven elevator cars to which electric conductors are attached. Use only extension cords that are marked with a designation code for hard or extra-hard usage. The auger then fell across the other worker, the 24-year-old victim. Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. C. near water. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. a) Door or window edges Using tools and equipment that can contact power lines increases the risk. a.Extension cords 182 0 obj <> endobj xref 182 41 0000000016 00000 n 0000003603 00000 n The ground wire was not attached on the male end of the cord's plug. Since the outlet at the adjacent property had no socket for a ground prong, the extension cords were plugged into the outlet using an adapter, but the ground wire of the adapter was not grounded. 1. Question 1: Which of these is a type of Ground Fault Circuit Adapter? vpfuI)],s 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. Be sure equipment that has been shop fabricated or altered is in compliance. The floor is covered in water and she is barefoot. he most common shock-related injuries are: -Damage to internal organs. It is important to note that NFPA 70E is a . 2.Flooding b.burns. This may damage your equipment and cause employee injuries. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. %%EOF ZR)!=w|; @uT C0? d. 411, You are working with a 10-foot section of a conductive pipe near power lines. Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? stream Is the west coast of Africa a plate boundary? Which of the following injuries can occur when muscles flex or twitch from an electrical shock? 0000005050 00000 n OSHA 29 CFR 1910, Subpart P . 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. Protection is lost because it will not trip when the system's load has been exceeded. 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. Explosion. The contact lasts for 5 seconds before someone is able to shut off the power. Extension cords are used to: 1.Damaged cover or insulation Easy to identify Apparently, his hand contracted and he was "locked" to the saw. 0000005716 00000 n d.A power tool, A GFCI is designed to: D. Have an ANSI sticker and an expiration date. Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. Dust c.15 feet 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). De-energize and ground lines when working near them. 5 feet 0000002876 00000 n 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream 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: The workers had removed their shirts and were sweating. 0000427811 00000 n Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. %PDF-1.5 The NEC C. Suggestions 3.When you are using portable power tools Which of the following are conductor of electricity? Use tools and equipment according to the instructions included in their listing, labeling or certification. (E) a, b, and c. 2. 0000421920 00000 n Question 2: Which of the following is NOT a category of electrical burns? d.50,000 volts. 1. To be safe, you must think about your job and plan for hazards. 0000012944 00000 n The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . The source of the shocks -- the saw -- was not replaced. 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. The ________ keeps the electricity on its intended path through the conductor. 0000014257 00000 n =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR a.Ground Fault Circuit Insulator [29 CFR 1926.416(a)(1)]. OSHA 29 CFR 1910.147 . OSHA will keep all identities confidential. Select the correct answer and then click DONE. Arc Flash. d.Water, Other electrical hazards in the workplace include: Which of the following part of you body can burn if you come in contact with electricity? a.Supply power for tools or equipment on a temporary or short-term basis. Select the correct answer and then click DONE. 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). D. near other electrical equipment. When does electricity become hazardous to humans? When current travels through your body - Definition of electric shock.
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