1.Is firmly connected Select the correct answer and then click DONE. b.Yes, because Bob was on . Quiz Question 9: Conductor insulation must be approved for the ___________ of use? D. near other electrical equipment. 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? 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. The small electrical current enters his body through his left leg. <>
(A) Shotgun sticks. 3.Needs to be reset Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . 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. Is the west coast of Africa a plate boundary? a.Yes, because the electrical shock caused the fall. Select the correct answer and then click DONE. OSHA 29 CFR 1910, Subpart P . Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. He plans to use it over a period of at least six months. d. 20 feet. 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. -Current= the movement of electrical charge. d.The body of the power tool. Extension cords are used to: d/E
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Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. 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). 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. d.Alert workers of any water in the area, GFCI is an acronym for: Use only equipment that is approved to meet OSHA standards. OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. a. True. 1.Clench 4.On equipment that must run unattended for long periods of time, Manufacturing equipment may be grounded using a wire connected to a rod driven into the earth. d) All of the above. b.10 feet Select the correct answer and then click DONE. Most of the hydrides of Group 1A and Group 2A metals are ionic. 0000001731 00000 n
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A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. 0000001861 00000 n
As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. Select the correct answer and then click DONE. SCENARIO: You encounter a co-worker on a residential remodeling job. The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. OSHA Safety and Health Topics Page. [, Do not modify cords or use them incorrectly. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. Leaving or using electrical appliances near water - As electric current is transmitted faster in on wet surfaces, you stand a chance of getting an electric shock. 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. Stay at least 10 feet away from overhead power lines. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: 0000018681 00000 n
When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: a. Gaseous matter Arc Flash. lex has set up a mobile engine testing station in the maintenance area. 3.Vapor Determine duration, frequency, degree of exposure to hazards and physical stress. d.Adapter, What is a GFCI? Question 1: Which of these is a type of Ground Fault Circuit Adapter? (b) The same reaction can also be classified as a redox reaction. 4 0 obj
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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. Frequently inspect electrical systems to insure that the path to ground is continuous. c. No, because the electricity is needed on a long-term basis. 5 feet Which of the following are insulators of electricity? 1.Missing or broken path to ground. Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. 1452 0 obj
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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. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. If a defective power tool gives you an electric shock, how might your muscles react? 0000110659 00000 n
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? 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. 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. 0000011060 00000 n
Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. 0000001116 00000 n
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Latoya is using a mixing motor to mix pool chemicals in a plastic drum. Unless you know otherwise, assume that overhead lines are energized. Used across walkways. 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! 3. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. b. c. Match the color of the tool to the color of the extension cord. 2. DHPP0MHLHIPPXc
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Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. 0000427811 00000 n
-If current passes through the body near the heart or brain. a.311 You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. In which of the following workplace situations are you at risk for coming into contact with live electrical . The auger has a one-quarter horsepower motor encased in a metal housing with two handles. b) Staples 0000002195 00000 n
The workers had removed their shirts and were sweating. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . Which of the following part of you body can burn if you come in contact with electricity? It is important to note that NFPA 70E is a . Select the choices that accurately define the common electrical term. Supply power for tools or equipment on a long-term basis. c.The outlet. 4. 4.Cardiac arrest She finds several available in the shop. 4. When an electric shock occurs, your muscles may: Before using the equipment, be sure that the ground wire: Be sure equipment that has been shop fabricated or altered is in compliance. b.Metal [Flexible Cords and Power Tools]. A) Identify; Castigate; C) Evaluate; D) Modify; 3. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) 0000419562 00000 n
The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. 2. 1.Damaged cover or insulation Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? 2.Grease Effective means of controlling power line hazards include: 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. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. d.Add more outlets. Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. stream
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High humidity 3.No, because he will not be touching any grounded material when using the tool. a) Ensure overhead power line safety specifically addresses electrical protective devices. Visually inspect all electrical equipment before use. Does the fall qualify as an electrical accident? c.Gasoline In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. c.911 2.Skin Burns. 3. Using a dry wood ladder when the possibility exists for contact with electricity. Explosion d.A power tool, A GFCI is designed to: Electrical hazards are life threatening incidents that could happen due to electricity. De-energizing 0000002385 00000 n
What type of burns are the result of current flowing through and exiting the body? b) By supplying GFCIs, or ground-fault circuit interrupters Best practices with power lines include: The victim was totally deaf in one ear and suffered diminished hearing in the other. Looking for NFPA 70E Certification? Which of the following can be the result of electric shock? Is not broken, Question Text: Electrical tools should be grounded with a(n)________. stream
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The NEC C. Suggestions 2.Using an aluminum ladder when the possibility exists for contact with electricity. 4. In addition to contact with power lines, the top electrical hazards include: a.Supply power for tools or equipment on a temporary or short-term basis. 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. 0000003603 00000 n
c. Inductive objects [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. startxref
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c.Power lines Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. 0000005632 00000 n
The victim provided a path to ground and was electrocuted. (3,2,1), (5,4,3). b.burns. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). Select the correct answer and then click DONE. d. heart attacks. To be safe, you must think about your job and plan for hazards. hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and hazard or that their employer is not following OSHA's rules. Select the correct answer and then click DONE. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. The ground wire was not attached on the male end of the cord's plug. 1. c.Wood [. OSHA will keep all identities confidential. Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. 0000002479 00000 n
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. 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. Is split Water 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. 1.A source of electrical current to flow. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. The following are electrical hazards: Shock. -Conductor= permits the free flow of electricity. c.Guaranteed Fault Circuit Interrupter Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. View Answer Answer: 600v 4 . 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. Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. %PDF-1.4
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4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: 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. -Severe skin burns. ZR)!=w|; @uT C0? OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. What is the primary purpose of properly grounding equipment? Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. 0000000816 00000 n
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An employee was texturing a wall using an air compressor. Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. -Glass. b.Rod Using tools and equipment that can contact power lines increases the risk. (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. One handle has a deadman's switch. 0000004921 00000 n
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Match the length from job to outlet. Select the correct answer and then click DONE. 2.Is working properly c.Absorb any water around the area 3.The length of time the body is in contact with electricity You should? A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. 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. As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. %PDF-1.5
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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. 1.Flammable liquids Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. Electrical Safety Multiple Choice Questions and Answers for competitive exams. vpfuI)],s A co-worker disconnected the power cord to the saw, too late to save the victim. a.Standing in water lb
MKS Look for overhead power lines and buried power line indicators. 2. a. _5JKy. (E) a, b, and c. 2. !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr
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If a worker has been retaliated against for using their rights, they The modification of the plug was not an intended use or prescribed by the manufacturer. 1.Fingernails 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. Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. endobj
OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. (C) Hot sticks. c.A measurement of electricity Explosion. 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. Electric current cannot exist without an unbroken path to and from the conductor. 0000001646 00000 n
Select the correct answer and then click DONE. 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. Switch b.Ground Fault Critical Interrupter Provide a safe path to earth ground for electricity. Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. a.Shut off power within a fraction of a second a.Ground Fault Circuit Insulator On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. Use only extension cords that are marked with a designation code for hard or extra-hard usage. s\A0W+GA?~G?nnnnnnnnnnnn>>{Wrbrbrbrb sbZef'N(:QvD":1vbo7o7o7W*_bTs6ivyU,;dFW`
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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. a.Electricity 2.Using extension cords or electrical tools properly. Additional minimum clearance distance is required for power lines carrying over ________. Select the correct answer and then click DONE. -Rubber. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. Provides information about the hazards that electrical workers may experience as a part of their jobs. he most common shock-related injuries are: a.Yes, as it is a mobile engine testing station. 2.Loose screws Quiz Question 7: Which is not an insulator? 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. 0000006866 00000 n
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Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. Identify the oxidizing and reducing agents. 1.The humidity of the environment 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. 0000012944 00000 n
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12 months C. 6 months D. Never Q23. He may have dropped the extension cord at the site and not heard the connector break.
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