which of the following are electrical hazards osha quizlet

c.The outlet. True. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ The ________ keeps the electricity on its intended path through the conductor. OSHA 29 CFR 1910, Subpart S . Use non-conductive wood or fiberglass ladders when working near power lines. 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. 0000015549 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. 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. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. What is the primary purpose of properly grounding equipment? Question 4: Which of the following is a type of burn caused by electrical hazards? Select the correct answer and then click DONE. 0000017163 00000 n The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . a.Standing in water lex has set up a mobile engine testing station in the maintenance area. 3. Which of these can be used as insulating live-line tools for electrical protection. 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. Besides personal bodily injury, what other electrical hazards can be found in the workplace? c.Three-prong plug It's okay to use extension cords with worn insulation, as . 128 0 obj <> endobj xref 128 26 0000000016 00000 n 0000004686 00000 n c.Power lines Which of the following factors determine how severe an electrical injury might be? 0000006152 00000 n Electrical Hazards Electrical hazards can be found in nearly every roofing work site. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. 0000028595 00000 n 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. Stay at least 10 feet away from overhead power lines. Quiz Question 1: Which of the following is not a category of electrical burns? 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. Lockout/tagout procedures. 0000004444 00000 n 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. 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. d. 20 feet. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. 1.When you are using electricity near water 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. d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. 3.Draped over equipment. 1.Missing or broken path to ground. 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. c) Age 0000055319 00000 n A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. 4.Circuit breakers, When inspecting power tools, look for: 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. De-energizing In which of the following workplace situations are you at risk for coming into contact with live electrical . a.Supply power for tools or equipment on a temporary or short-term basis. Extension cords had poor splices, no grounds, and reversed polarity. 4.Must be replaced, Always use a GFCI: Best practices with power lines include: C 277v. D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. 1. A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. 0000110659 00000 n 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. Best Practices with Power Lines 1. Most of the hydrides of Group 1A and Group 2A metals are ionic. b.Yes, because Bob was on . a.Yes, as it is a mobile engine testing station. 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. c. No, because the electricity is needed on a long-term basis. 0000108653 00000 n c.911 Which of the following injuries can occur when muscles flex or twitch from an electrical shock? Ground all power supply systems, electrical circuits, and electrical equipment. _.9u'2G_0 Ue]e"x5|Y Burns. |tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp When current travels through your body - Definition of electric shock. How fast would the ball be moving at the moment of release? 0000420887 00000 n 0000056642 00000 n %PDF-1.4 % The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. c.Wood 0000003413 00000 n -Current= the movement of electrical charge. Frequently inspect electrical systems to insure that the path to ground is continuous. 12 months C. 6 months D. Never Q23. -If current passes through the body near the heart or brain. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? 0000002733 00000 n Which of the following are insulators of electricity? Ground all exposed metal parts of equipment. 0000422244 00000 n 3.Body tissue _5JKy. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 4.Flex Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. 0000057373 00000 n Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. 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 182 0 obj <> endobj xref 182 41 0000000016 00000 n Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. d.Metal, Over half of all deaths caused by electricity result from contact with ________. Water 2. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. 0000002385 00000 n Protection is lost because it will not trip when the system's load has been exceeded. The following are electrical hazards: Shock. (B) Switch sticks. 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. 1476 0 obj <>stream 1.Extension cords 0000007741 00000 n A) Identify; Castigate; C) Evaluate; D) Modify; 3. Question 1: Each year, approximately __________ workers suffer from electricity related injuries. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? Explain the purpose and use of the MyPlate symbol. 1.Missing Electrical Safety Multiple Choice Questions and Answers for competitive exams. 3 0 obj 3 0 obj To be safe, you must think about your job and plan for hazards. Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. 2.Skin The victim signaled the operator of the crane to extend the boom and lower the hoist cable. 3.Cramp 0000002876 00000 n 2.Flooding Power was supplied through two extension cords from a nearby residence. 4 0 obj 0000004946 00000 n Computers <> Additionally, the ground prong was missing and there was no GFCI protection. 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. 0000004274 00000 n (C) Hot sticks. Post warning signs. a.20,000 volts BE SAFE! -Wood. 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. endobj 4.Cardiac arrest Apparently, his hand contracted and he was "locked" to the saw. Effective means of controlling power line hazards include: Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. 0000017336 00000 n 0000001896 00000 n Potential hazards of electricity are preventable if you do which of the following listed below? -Damage to internal organs. What is the output of the program in Exercise 17, if first = 26 and second = 8? Should Ajay use a GFCI? A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. 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. b. 0000421920 00000 n Use only extension cords that are marked with a designation code for hard or extra-hard usage. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. Both could have prevented the accident from occuring. 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. Which of the following can be the result of electric shock? 2.Is working properly 3.ack of ground fault protection. 0000001672 00000 n 3.No, because he will not be touching any grounded material when using the tool. OSHA 10 General Industry Test Answer Key WALKING. 4.The amount of current, An electrical burn may affect: Switch How will she choose the correct cord? In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. The factors that determine the severity of an electrical injury include: She finds several available in the shop. 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. 30 days B. 2.Using extension cords or electrical tools properly. B. outdoors. 5 feet [Power Tools]. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. 3. 2 0 obj Additionally, the ground prongs were missing from the two cords. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! <<7628BB2D46738F42B2FC6393656F4718>]>> %PDF-1.4 % What type of burns are the result of current flowing through and exiting the body? 0000002479 00000 n Select the choices that accurately define the common electrical term. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 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. Test your knowledge with our electrical safety quiz below. b.Metal <> a) Door or window edges Provide a safe path to earth ground for electricity. Quiz Question 3: Power cords can be damaged by which of the following? (D) None of the above. Question 1: Which of the following is a danger of electricity? d.Constructive objects, Select all answers that apply to the following statement and then click DONE. 2. 0000003603 00000 n Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. 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. Select the correct answer and then click DONE. )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'. 1.A source of electrical current to flow. Co-workers provided CPR, but were unable to revive the victim. Select the correct answer and then click DONE. 4.Running through doorways. Which of the following can be caused by exposure to an arc flash? 0000421627 00000 n d.A power tool, A GFCI is designed to: 1.Cuts d. No, because an extension cord would not provide enough power. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. Then answer the questions below. The victim was totally deaf in one ear and suffered diminished hearing in the other. 4 0 obj Apply a warning tag to any defective tool and do not use it until the problem has been corrected. Does the fall qualify as an electrical accident? b.Electrical tools Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 0000001731 00000 n The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. 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. Is the west coast of Africa a plate boundary? 3.When you are using portable power tools 0000002557 00000 n 5.Twitch, Electrical shock may result in: Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. Use only cords, connection devices, and fittings that are equipped with strain relief. %PDF-1.4 % g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream 0000004273 00000 n (See NFPA 70E-2021 Article 130 and OSHA subpart S part . c.40,000 volts 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. Arc Flash. Which of the following part of you body can burn if you come in contact with electricity? 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: 0000420564 00000 n 1 0 obj 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. Safe operation of hand and portable powered tools and other hand-held equipment. 0000004884 00000 n d. Power outlets, ________ are anything that can transmit electrical current. D. Have an ANSI sticker and an expiration date. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. Yes, because he will be using electricity near water. <> c. Extend the reach of the power tool. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? 4. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. 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 Is not painted over 4.No, because he does not need to use an extension cord. a.A small current 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 . 3.Needs to be reset The source of the shocks -- the saw -- was not replaced. Using equipment outdoors that is labeled for use only in dry, indoor locations. Select the correct answer and then click DONE. Using multi-receptacle boxes designed to be. A) 120v . Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. 0000000816 00000 n c.Gasoline High humidity 3.Vapor gYpV:+ Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. %PDF-1.5 0000022637 00000 n Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. What was Latoya's first mistake? 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. 0000419562 00000 n 0000000016 00000 n When does electricity become hazardous to humans? If a defective power tool gives you an electric shock, how might your muscles react? 0000001646 00000 n Question 2: Which of the following are ways . Lx*jWP# /c2)|]NXqAx>=~'[ When inspecting extension cords, look for: He may have dropped the extension cord at the site and not heard the connector break. b) By supplying GFCIs, or ground-fault circuit interrupters Electrical Contractors Industry. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. 0000001908 00000 n OSHA 29 CFR 1910.147 . Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. endobj Electricity will form a "path" or "loop". b. specifically addresses electrical protective devices. d) All of the above. 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. Death. 0000002403 00000 n Extension cords may become a trip hazard when: Question 3: A/an ____________ is a unit of measurement for electrical resistance. Question 2: Which of the following is NOT a category of electrical burns? Before using the equipment, be sure that the ground wire: You need to evaluate the situation you are in and assess your . 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. A measure of the energy of motion of the particles in a substance is its _____. Using cords or tools with worn insulation or exposed wires. Which group would be more accurate when used in an accelerating spaceship? The following references aid in recognizing hazards associated with electrical work. 3. 1.Flammable liquids endobj 0000005406 00000 n b.10 feet Isolating, Power lines may be located underground. 3.Something that causes current to flow through the . a.Yes, because the electrical shock caused the fall. 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. Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. 3. The auger has a one-quarter horsepower motor encased in a metal housing with two handles. 2.Something to transport the electrical current -- A conductor. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. Cardiac arrest or death - A result of electrical shock. 0000003900 00000 n Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? hazard or that their employer is not following OSHA's rules. 1.The humidity of the environment Using a dry wood ladder when the possibility exists for contact with electricity. Visually inspect all electrical equipment before use. H. 1. (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. What is the most common, non-fatal, electrical shock-related injury? lb MKS 0000001495 00000 n If you are touching any grounded material while using a power tool List the four main types of electrical injuries, Using the illustration, select the answer that matches the picture, Identify the illustration by selecting the appropriate answer. c.Guaranteed Fault Circuit Interrupter She has an older drill with a steel housing and a 3-prong plug. The modification of the plug was not an intended use or prescribed by the manufacturer. This is action is also known as creating or completing an electrical circuit. . Select the correct answer and then click DONE. =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR [, Use all equipment according to the manufacturer's instructions. <> Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. %%EOF Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. 1. xYmo -ER/&@[D,_! 0000001814 00000 n a.311 If a worker has been retaliated against for using their rights, they What is the minimum clearance distance you must maintain from the power lines? 0000001116 00000 n 2. Underground electrical hazards are: A. Take any defective equipment out of service. Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. Frames of non-electrically driven elevator cars to which electric conductors are attached. Examples Of Electrical Hazards. 3.The length of time the body is in contact with electricity C. near water. a. b.burns. a. Other protective measures include guarding or insulating the lines. Freeze b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. 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. 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. 0000007694 00000 n Outlets 0000001861 00000 n A. wrap tape around the damaged spot to prevent electrical shocks. Question 1: Which of these is a type of Ground Fault Circuit Adapter? 2.Complete 0000005042 00000 n Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. % 0000002122 00000 n Use tools and equipment according to the instructions included in their listing, labeling or certification. Get All Answers to OSHA 30 Construction Final Exam. Draw a line from the item on the left that corresponds to the match on the right. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. Dust d.50,000 volts. While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. a.Extension cords A 120v. Quiz: Electrical Hazards. 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. Check your employee's electrical safety knowledge through an electrical safety quiz. Look for overhead power lines and buried power line indicators. Easy to identify 0000006893 00000 n 0000007464 00000 n Remove cords from receptacles by pulling on the plugs, not the cords. :$#k9BPnZ{Qqe/reKy,'ZlB# After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. 1.Pain Supply power for tools or equipment on a long-term basis. Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. Muscular contraction and nerve damage occur; death likely. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. According to NFPA 70E, job briefings must be held for those employees that will be working on or near live parts operating at ______ or more. q>NmnLNmb$"Iyx1bD9.~Ll. Improper Use of Extension and Flexible Cords. B. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. 0000012360 00000 n -Conductor= permits the free flow of electricity. No GFCI's were used. <>>> 1.Damaged cover or insulation

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