Select the correct answer and then click on DONE. 1. Improper Use of Extension and Flexible Cords. Work performed on an electrical system within reaching distance of energized components is_____work. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. D 600v. a.Standing in water <>
a.Conductive objects 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. 0000005042 00000 n
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2.Grounding C. near water. 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. The victim provided a path to ground and was electrocuted. b. Deductive objects Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. What type of burns are the result of current flowing through and exiting the body? b. 3. trailer
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1.Missing Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? c. No, because the electricity is needed on a long-term basis. 0000017163 00000 n
4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: d.The body of the power tool. 2.Is working properly 128 0 obj
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The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . How fast would the ball be moving at the moment of release? Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. 0000004965 00000 n
a) Ensure overhead power line safety No GFCI's were used. (C) Hot sticks. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. 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. 0000110659 00000 n
[29 CFR 1926.416(a)(1)]. The ground wire was not attached on the male end of the cord's plug. Electrical current travels through insulated ________. c.A measurement of electricity Visually inspect all electrical equipment before use. Provides information about the hazards that electrical workers may experience as a part of their jobs. De-energizing 0000007116 00000 n
She finds several available in the shop. a. The factors that determine the severity of an electrical injury include: 0000007464 00000 n
0000017336 00000 n
Water b) By supplying GFCIs, or ground-fault circuit interrupters A) 120v . In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. %PDF-1.4
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Hand-operated metal shifting ropes or cables of electric elevators. 0000007427 00000 n
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BE SAFE! 2.Loose bolts [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. <>>>
Explosion. 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. High humidity _5JKy. You should? 0000013999 00000 n
1.Pain What do tripped circuit breakers and blown fuses indicate? Select the correct answer and then click DONE. b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. He plans to use it over a period of at least six months. 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. 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. A. wrap tape around the damaged spot to prevent electrical shocks. 5.Twitch, Electrical shock may result in: 4.Must be replaced, Always use a GFCI: The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. c) Establish and enact an assured equipment grounding conductor program (AEGCP) 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. When inspecting extension cords, look for: 0000009628 00000 n
Both could have prevented the accident from occuring. He may have dropped the extension cord at the site and not heard the connector break. It's okay to use extension cords with worn insulation, as . True. Does the fall qualify as an electrical accident? 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. 0000420887 00000 n
Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. 4 0 obj
a.A small current 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. 0000003254 00000 n
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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. Electrical hazards are life threatening incidents that could happen due to electricity. 4.Circuit breakers, When inspecting power tools, look for: 0000421627 00000 n
c.40,000 volts 0000004444 00000 n
Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? Dust Additional minimum clearance distance is required for power lines carrying over ________. Be sure equipment that has been shop fabricated or altered is in compliance. 2.Placed along a wall. Use only cords, connection devices, and fittings that are equipped with strain relief. endobj
b) Staples d. No, because an extension cord would not provide enough power. vpfuI)],s 4.No, because he does not need to use an extension cord. -Current= the movement of electrical charge. d.50,000 volts. xYmo -ER/&@[D,_! 3.ack of ground fault protection. endobj
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. . 2.Flooding 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV
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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. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . lex has set up a mobile engine testing station in the maintenance area. b.Yes, because Bob was on . using a 30-amp breaker in a system with 15- or 20-amp receptacles. When current travels through your body - Definition of electric shock. 0000006152 00000 n
0000006866 00000 n
D. Have an ANSI sticker and an expiration date. 1. [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. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? 0000001116 00000 n
Examples of Equipment That Can Contact Power Lines. b.Not wearing insulating shoes or boots when she was handling electrical equipment Of the following choices, which are frequent electrical hazards
-Grounding= a conductive connection to the earth which acts as a protective measure. Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. 2. Unless you know otherwise, assume that overhead lines are energized. Arc Flash. DHPP0MHLHIPPXc
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Provide a safe path to earth ground for electricity. Select the choices that accurately define the common electrical term. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. Besides personal bodily injury, what other electrical hazards can be found in the workplace? 3.Something that causes current to flow through the . Select the correct answer and then click DONE. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. What three things must be present for a current to flow through a conductor. 1.Is firmly connected 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. Determine duration, frequency, degree of exposure to hazards and physical stress. Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. endobj
0000420277 00000 n
2.Using extension cords or electrical tools properly. Electrical Safety Multiple Choice Questions and Answers for competitive exams. 0000068035 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. 0000000816 00000 n
1.Flammable liquids Protection is lost because it will not trip when the system's load has been exceeded. What is the minimum clearance distance you must maintain from the power lines? Easy to identify Which of the following are insulators of electricity? Muscular contraction and nerve damage occur; death likely. 1. 1.Missing or broken path to ground. 3.The length of time the body is in contact with electricity 0000057373 00000 n
2.Using an aluminum ladder when the possibility exists for contact with electricity. (A) Shotgun sticks. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. 0000007694 00000 n
Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. The following references aid in recognizing hazards associated with electrical work. 30 days B. 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. The contact lasts for 5 seconds before someone is able to shut off the power. Quiz Question 7: Which is not an insulator? The following are electrical hazards: Shock. a.Yes, as it is a mobile engine testing station. c) Age d.Water, Other electrical hazards in the workplace include: (B) Switch sticks. 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 auger has a one-quarter horsepower motor encased in a metal housing with two handles. 2. 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. The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. <>
hazard or that their employer is not following OSHA's rules. 0000005050 00000 n
0000001908 00000 n
View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. Ground all power supply systems, electrical circuits, and electrical equipment. Which of these can be used as insulating live-line tools for electrical protection. To avoid injury or death, you must understand and recognize hazards. Extension cords had poor splices, no grounds, and reversed polarity. D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. 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. Question 4: Which of the following is a type of burn caused by electrical hazards? 4. Computers Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. 0000012944 00000 n
Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. 1.Clench 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. Select the correct answer and then click DONE. c. Extend the reach of the power tool. 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. 4,600. 1452 0 obj
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The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). trailer
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The auger then fell across the other worker, the 24-year-old victim. 1.Damaged cover or insulation The source of the shocks -- the saw -- was not replaced. Electrical safety quiz answers are given below. If a worker has been retaliated against for using their rights, they <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
Fire After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. 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. 0000002385 00000 n
1.Cuts Explosion Quiz Question 9: Conductor insulation must be approved for the ___________ of use? The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. Using a dry wood ladder when the possibility exists for contact with electricity. 4 0 obj
Should he use an extension cord to power it? Question 2: Which of the following are ways employers must protect their employees on the workplace? Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. Electricity becomes hazardous when it takes an unintended path to complete the ________. Is not painted over 0000108653 00000 n
Carly needs to use an extension cord with her corded nail gun. Question 1: Which of these is a type of Ground Fault Circuit Adapter? b+t6W' te+.W_{8u7Dt@1c. d.Metal, Over half of all deaths caused by electricity result from contact with ________. 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. Then answer the questions below. Post warning signs. 3.Tears Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. OSHA 29 CFR 1910, Subpart S . Electrical Contractors Industry. 0000010603 00000 n
Select the correct answer and then click DONE. 2. 0000419562 00000 n
d.Alert workers of any water in the area, GFCI is an acronym for: On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. Apparently, his hand contracted and he was "locked" to the saw. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. c.Wood The workers administered CPR to the victim, but to no avail. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. Wearing a baseball cap Select the choices that accurately define the common electrical term. 0000005520 00000 n
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3.Maintaining a safe distance of at least 10 feet from all overhead power lines. 0000004208 00000 n
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Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. C 277v. a.Electricity Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. Select the correct answer and then click DONE. 3. lb
MKS 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). Select the correct answer and then click DONE. =EAn`u!d, |\~Y>ZF(
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`&~O4j)>1P*M 5>F:1B.g!AR 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. -Conductor= permits the free flow of electricity. a.311 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? Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. 3 0 obj
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. Regarding hand protection employers should: A. What is the most common, non-fatal, electrical shock-related injury? 0000004884 00000 n
[Flexible Cords and Power Tools]. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. d.Add more outlets. _.9u'2G_0 Ue]e"x5|Y 2 0 obj
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He yelled for his co-workers to disconnect the power, which they did. What is the output of the program in Exercise 17, if first = 26 and second = 8? 0000005406 00000 n
2. -Falls. 0000004946 00000 n
A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. 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. c. Match the color of the tool to the color of the extension cord. Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. [Power Tools]. 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+
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2.Loss of muscle control c.Touching the motor Which of the following are conductor of electricity? 3. Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. (3,2,1), (5,4,3). 0000008392 00000 n
Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. Underground electrical hazards are: A. 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. SCENARIO: You encounter a co-worker on a residential remodeling job. B. b.Metal 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. 3.Loss of eyesight Do not remove ground prongs from cord- and plug-connected equipment or extension cords. You need to evaluate the situation you are in and assess your . What factors determine the severity of Dirk's injuries? 0000014257 00000 n
q>NmnLNmb$"Iyx1bD9.~Ll. -Voltage= a measure of electrical force. When used on the moon? 0000055319 00000 n
The driver stopped the truck under the power line, and the victim, not realizing that the truck had moved, swung the boom to position the bucket behind the truck. OSHA 29 CFR 1910, Subpart P . 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. Using multi-receptacle boxes designed to be. RZyd b.A fast-acting switch monitoring current flow 0000022637 00000 n
Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? True. 3.Vapor Isolating, Power lines may be located underground. Select the correct answer and then click DONE. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. Which of the following can be caused by exposure to an arc flash? -Damage to internal organs. %%EOF
c.Absorb any water around the area Before using the equipment, be sure that the ground wire: 0000002150 00000 n
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. The floor is covered in water and she is barefoot. Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . a.related to muscle damage. 3. Ajay needs to use a dewatering pump to drain standing water on a construction site. The most dangerous place to use electrical equipment is? endobj
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One handle has a deadman's switch. 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. c. Inductive objects [, Use all equipment according to the manufacturer's instructions. 0000002733 00000 n
Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. 0000002403 00000 n
0000421920 00000 n
Test your knowledge with our electrical safety quiz below. 1452 25
Quiz: Electrical Hazards. 0000002479 00000 n
Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires Lx*jWP# /c2)|]NXqAx>=~'[ 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: Question 1: Which of the following is a danger of electricity? Most of the hydrides of Group 1A and Group 2A metals are ionic. Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. Death. 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. OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and c.15 feet A) Identify; Castigate; C) Evaluate; D) Modify; 3. Best Practices with Power Lines 1. 2.Grease 0000003603 00000 n
Burns. b.Shut off power within five minutes of the imbalance <>
There were no eyewitnesses to the accident, but evidence suggests that while the victim was handling the damaged and energized extension cord, he provided a "path to ground" and was electrocuted. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. %
4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. Which of the following can be the result of electric shock? 0000001861 00000 n
4.The amount of current, An electrical burn may affect: Quiz Question 2: Which is acceptable when using powdered tools? b.811 Continually audit cords on-site. <>>>
0000024814 00000 n
a.Ground Fault Circuit Insulator This may damage your equipment and cause employee injuries. Draw a line from the item on the left that corresponds to the match on the right. Select the correct answer and then click DONE. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
Visually inspect all electrical equipment before use. xb```VVF A10p,``Pp`hhdpn``r`L:[
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2.Yes, because he is using a portable power tool. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. 0000003771 00000 n
1.Is faulty The victim collapsed into the lake and sank 4-1/2 feet to the bottom. 1.The humidity of the environment Freeze 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. To be safe, you must think about your job and plan for hazards. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. endobj
Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. 0000004686 00000 n
Quiz Question 3: Power cords can be damaged by which of the following? Does the fall qualify as an electrical accident? Death is probable. 0000003715 00000 n
0000001896 00000 n
She has an older drill with a steel housing and a 3-prong plug. Safe operation of hand and portable powered tools and other hand-held equipment. Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. %PDF-1.4
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Apply a warning tag to any defective tool and do not use it until the problem has been corrected. 3.Loose nuts Study with Quizlet and memorize flashcards containing terms like Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential?, 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., When does electricity become hazardous to humans?
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