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. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. which of the following are electrical hazards osha quizlet 0000422244 00000 n C. near water. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . 1.Is firmly connected One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. 0000004946 00000 n Examples Of Electrical Hazards. xref 4.Cardiac arrest 2. If the power supply to the electrical equipment at your site is not grounded or the path has been broken, fault current may travel through a worker's body, causing electrical burns or death. <> OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. d. Power outlets, ________ are anything that can transmit electrical current. 3.Clear (b) The same reaction can also be classified as a redox reaction. C 277v. A. indoors. Extension cords had poor splices, no grounds, and reversed polarity. 0000017336 00000 n Electricity will form a "path" or "loop". c.Wood c.Touching the motor PDF SAFETY HAZARDS: These are the most PHYSICAL HAZARDS: CHEMICAL HAZARDS Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. d) All of the above. The contact lasts for 5 seconds before someone is able to shut off the power. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). How fast would the ball be moving at the moment of release? c.911 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 4: Which of the following is a type of burn caused by electrical hazards? It's okay to use extension cords with worn insulation, as . 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. De-energize and ground lines when working near them. 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. Question 1: Employers must ensure that every electric utilization system and all utilization equipment installed, majorly modified, or replaced after March 15, 1972, complies with the standards for electricity set by the National Fire Protection Association, which have been adopted by OSHA. Quiz Question 7: Which is not an insulator? Underground electrical hazards are: A. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. d.Adapter, What is a GFCI? Use only extension cords that are marked with a designation code for hard or extra-hard usage. Hand-operated metal shifting ropes or cables of electric elevators. Equipment used in manner prescribed. )KL3C?e%Y92$,]^)kmR/!8\ JF N'bT\U1+tc+&:'ZuGi!UeUrE [?CrU.&|#@Ed,=2UF]r/n/{v-;v>%/~;[*AxBU,-#!uyFGR,Wv[ cOzObnZfI4ob:pf "~ .iBE@mOs:Os5U9cnU` Vd"F'4Bm?>}hyRQyrX0U026h7#L'. Supply power for tools or equipment on a long-term basis. ZR)!=w|; @uT C0? Additionally, the ground prongs were missing from the two cords. (D) None of the above. Using multi-receptacle boxes designed to be. and more. 4.No, because he does not need to use an extension cord. When does electricity become hazardous to humans? OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and Power was supplied through two extension cords from a nearby residence. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? 0000014257 00000 n a.Two-prong plug 0 % <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> c.15 feet d) All of the above. he most common shock-related injuries are: 0000004965 00000 n The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. 0000004793 00000 n d. heart attacks. Best Practices with Power Lines Quiz OSHA 30 - Best [Flexible Cords and Power Tools] If there is no ground-fault protection, these can cause a ground-fault that sends current through the worker's body, resulting in electrical burns, explosions, fire, or death. 5 feet 0000108653 00000 n d. 411, You are working with a 10-foot section of a conductive pipe near power lines. It is important to note that NFPA 70E is a . c.40,000 volts Select the correct answer and then click DONE. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. OSHA 10 - Electrical Flashcards | Quizlet d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs 0000009628 00000 n c.Three-prong plug 2. In which of the following workplace situations are you at risk for coming into contact with live electrical . b.Yes, because Bob was on . Bob is asked to repair some overhead wiring, requiring the use a ladder. b. 2.Something to transport the electrical current -- A conductor. The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. d.50,000 volts. 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. Apparently, his hand contracted and he was "locked" to the saw. When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: PDF OSHA Safety - Electrical Safety - Red Vector Quiz Question 1: Which of the following is not a category of electrical burns? 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. The source of the shocks -- the saw -- was not replaced. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. 0000001896 00000 n -Severe skin burns. Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? Check your employee's electrical safety knowledge through an electrical safety quiz. 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. B. outdoors. Use non-conductive wood or fiberglass ladders when working near power lines. Select the choices that accurately define the common electrical term. OSHA will keep all identities confidential. Electrical Safety Multiple Choice Questions and Answers for competitive exams. What is the output of the program in Exercise 17, if first = 26 and second = 8? d.Constructive objects, Select all answers that apply to the following statement and then click DONE. 1.Flammable liquids High humidity Overview. d.The body of the power tool. 0000004686 00000 n Regarding hand protection employers should: A. 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. Work performed on an electrical system within reaching distance of energized components is_____work. Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. -Damage to internal organs. B 208v. A. wrap tape around the damaged spot to prevent electrical shocks. When it completes a circuit through the body. 0000005716 00000 n An employee was texturing a wall using an air compressor. a.A small current 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 The ground wire was not attached on the male end of the cord's plug. c.A measurement of electricity The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. Question 1: Which of the following is a danger of electricity? Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. Co-workers provided CPR, but were unable to revive the victim. 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. 3.Vapor To be safe, you must think about your job and plan for hazards. 2.The person's physical condition Switch Question 1: Employers must ensure that every electric utilization system and all utilization equipment installed, majorly modified, or replaced after March 15, 1972, complies with the standards for electricity set by the National Fire Protection Association, which have been adopted by OSHA. specifically addresses electrical protective devices. 0000068035 00000 n Before using the equipment, be sure that the ground wire: x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q Electrical Hazards Electrical hazards can be found in nearly every roofing work site. <> Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. d. Match the outlet prongs to the extension cord. 2.Flooding Computers a.Conductive objects 0000010603 00000 n :$#k9BPnZ{Qqe/reKy,'ZlB# 1.Pain Question 1: Each year, approximately __________ workers suffer from electricity related injuries. Electrical Safety Assessment Quiz Answers | ISHN 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. What was Latoya's first mistake? Electrical current travels through insulated ________. endobj 0000419562 00000 n Select the correct answer and then click DONE. What type of burns are the result of current flowing through and exiting the body? b.burns. !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. These short objective type questions with answers are very important for competitive exams as well as Board exams. Using equipment outdoors that is labeled for use only in dry, indoor locations. c.falls. gYpV:+ As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. 0000001731 00000 n Isolating, Power lines may be located underground. Quiz: Electrical Hazards. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. OSHA-10: Avoiding Electrocution Hazards Flashcards | Quizlet 0000002557 00000 n D 600v. De-energizing What factors determine the severity of Dirk's injuries? 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 victim provided a path to ground and was electrocuted. PDF Electrical Safety - Occupational Safety and Health Administration The factors that determine the severity of an electrical injury include: 1 0 obj She finds several available in the shop. Effective means of controlling power line hazards include: 0000000816 00000 n b.Not wearing insulating shoes or boots when she was handling electrical equipment Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. OSHA Safety and Health Topics Page. trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream 4. [Power Tools]. 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. 4.Broken. 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. Electricity becomes hazardous when it takes an unintended path to complete the ________. 2.Using extension cords or electrical tools properly. 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. One hand drill was not grounded, and the other had no safety plate. 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. 0000002386 00000 n 0000002403 00000 n 2 0 obj Ground all power supply systems, electrical circuits, and electrical equipment. 128 0 obj <> endobj xref 128 26 0000000016 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 0000001814 00000 n Best Practices with Power Lines 1. 0000004273 00000 n He plans to use it over a period of at least six months. Explain the purpose and use of the MyPlate symbol. PDF Name: Date: Test Electrical Safety Quiz SELECT THE BEST ANSWER. Protection is lost because it will not trip when the system's load has been exceeded. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. Does the fall qualify as an electrical accident? Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. 3.Loss of eyesight Explosion. a) Door or window edges 0000003254 00000 n 3 0 obj Be sure equipment that has been shop fabricated or altered is in compliance. %PDF-1.5 0000003715 00000 n Get All Answers to OSHA 30 Construction Final Exam. 3.Tears When inspecting extension cords, look for: 1.Fingernails No GFCI's were used. Unless you know otherwise, assume that overhead lines are energized. (B) Switch sticks. Select the correct answer and then click DONE. Is split 0000002150 00000 n -Rubber. 3.Something that causes current to flow through the . % 4.Circuit breakers, When inspecting power tools, look for: c) Age Match the length from job to outlet. 1. When current travels through your body - Definition of electric shock. PDF C. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. Question 3: A/an ____________ is a unit of measurement for electrical resistance. RZyd Is not painted over 3. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. (E) a, b, and c. 2. 2.Is working properly 0000414648 00000 n The NEC C. Suggestions a) Ensure overhead power line safety In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. 0000001116 00000 n The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. Select the correct answer and then click on DONE. Quiz Question 2: Which is acceptable when using powdered tools? 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. You need to evaluate the situation you are in and assess your . 2. 0000003413 00000 n 0000427811 00000 n qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? If you are touching any grounded material while using a power tool b.Shut off power within five minutes of the imbalance <> OSHA 29 CFR 1910, Subpart S . d. 20 feet. c. Inductive objects The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. Remove cords from receptacles by pulling on the plugs, not the cords. 1476 0 obj <>stream You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. 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). b) By supplying GFCIs, or ground-fault circuit interrupters Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. D. near other electrical equipment. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? 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. Intentionally creating a low-resistance path that connects to the earth. 3. b.The tool's power cord. d.Alert workers of any water in the area, GFCI is an acronym for: 0000001861 00000 n Besides personal bodily injury, what other electrical hazards can be found in the workplace? What three things must be present for a current to flow through a conductor. 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. b.811 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. -Grounding= a conductive connection to the earth which acts as a protective measure. endobj eTool : Construction - Electrical Incidents | Occupational Safety and c. Extend the reach of the power tool. 3.When you are using portable power tools Question 1: Which of these is a type of Ground Fault Circuit Adapter? On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. 0000004208 00000 n 0000003771 00000 n Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. 0000015549 00000 n ( 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: Electrical hazards are life threatening incidents that could happen due to electricity. Latoya is using a mixing motor to mix pool chemicals in a plastic drum. Provide a safe path to earth ground for electricity. Which of the following can be caused by exposure to an arc flash? Using a dry wood ladder when the possibility exists for contact with electricity. Draw a line from the item on the left that corresponds to the match on the right. Which group would be more accurate when used in an accelerating spaceship? Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 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. 4.Flex 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. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) a.Your thumb. 4 0 obj endobj Death. A 120v. 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. a.311 1. . NFPA 70E defines those special circumstances and sets rigid electrical safety limits on voltage exposures, work zone boundary requirements and necessary personal protective equipment (PPE). b.30,000 volts a.Supply power for tools or equipment on a temporary or short-term basis. Electrical Safety Standards in the Workplace - NFPA 70E - Grainger KnowHow 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. Other protective measures include guarding or insulating the lines. 4 0 obj Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. Should Ajay use a GFCI? 2.Placed along a wall. 0000002195 00000 n CCOHS: Electrical Safety - Basic Information c.Absorb any water around the area Electrical Contractors Industry. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream Use tools and equipment according to the instructions included in their listing, labeling or certification. Extension cords are used to: 2. All of the following are essential considerations for the safe use of cords and wiring EXCEPT: Which one of these methods is not acceptable for putting out an electrical fire? 3.Needs to be reset 0000001672 00000 n One handle has a deadman's switch. -Voltage= a measure of electrical force. Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. 2. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 3.Cramp b. Deductive objects d. No, because an extension cord would not provide enough power. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. Post warning signs. 0000006893 00000 n -Wood. The accident site was wet; also, humidity was high and the victim was sweating. using a 30-amp breaker in a system with 15- or 20-amp receptacles. 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 If a defective power tool gives you an electric shock, how might your muscles react? 0000007741 00000 n 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. 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. 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. 1.Missing Examples of Equipment That Can Contact Power Lines. A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. 1452 0 obj <> endobj Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires Use only cords, connection devices, and fittings that are equipped with strain relief. 1.When you are using electricity near water %PDF-1.4 % stream 0000021516 00000 n Test your knowledge with our electrical safety quiz below. Select the correct answer and then click DONE. Arc Flash. 2.Grounding A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. 3.The length of time the body is in contact with electricity Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. 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. 0000110659 00000 n Visually inspect all electrical equipment before use. 2.Skin 4. Electric current cannot exist without an unbroken path to and from the conductor. 0000005050 00000 n Introduction To Osha Quiz Answers1) Which of the following activities Visually inspect all electrical equipment before use. Improper Use of Extension and Flexible Cords. endobj 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.