which of the following are electrical hazards osha quizlet

Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. 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? Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? 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 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.Not wearing insulating shoes or boots when she was handling electrical equipment A co-worker disconnected the power cord to the saw, too late to save the victim. <> 5 feet 0000028595 00000 n Death. <> Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. c) Establish and enact an assured equipment grounding conductor program (AEGCP) %%EOF 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. -Rubber. Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? 1. 1. Apparently, his hand contracted and he was "locked" to the saw. 3.Clear Which of the following can be caused by exposure to an arc flash? Besides personal bodily injury, what other electrical hazards can be found in the workplace? Draw a line from the item on the left that corresponds to the match on the right. 0000001604 00000 n Water 0000056642 00000 n Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. 0000003254 00000 n Take any defective equipment out of service. Post warning signs. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. Select the correct answer and then click DONE. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . The auger has a one-quarter horsepower motor encased in a metal housing with two handles. 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. Power was supplied through two extension cords from a nearby residence. . 0000004686 00000 n What is the minimum clearance distance you must maintain from the power lines? A. indoors. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 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. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. s\A0W+ He plans to use it over a period of at least six months. 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. b.The tool's power cord. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. -If current passes through the body near the heart or brain. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. b.Yes, as it would be too expensive to install more permanent wiring and receptacles. In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. c. No, because the electricity is needed on a long-term basis. Computers The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. 0000110659 00000 n c.Three-prong plug D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. 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. b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. and more. 5.Twitch, Electrical shock may result in: 0 [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. Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. You should? Question 2: Which of the following are ways . 0000001908 00000 n The small electrical current enters his body through his left leg. It is important to note that NFPA 70E is a . 4 0 obj (3,2,1), (5,4,3). 4,600. Looking for NFPA 70E Certification? Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. If you are touching any grounded material while using a power tool Remove cords from receptacles by pulling on the plugs, not the cords. How will she choose the correct cord? 0000018681 00000 n b.811 lb MKS Question 3: A/an ____________ is a unit of measurement for electrical resistance. d. heart attacks. Yes, because he will be using electricity near water. a. Gaseous matter 1.Is faulty What is the primary purpose of properly grounding equipment? 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. 1 0 obj 0000002479 00000 n a.Ground Fault Circuit Insulator Burns. 3. 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. B. -Wood. he most common shock-related injuries are: Muscular contraction and nerve damage occur; death likely. 0000002403 00000 n 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. a.Conductive objects The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. Use only equipment that is approved to meet OSHA standards. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. <<7628BB2D46738F42B2FC6393656F4718>]>> A) Identify; Castigate; C) Evaluate; D) Modify; 3. View Answer Answer: 600v 4 . 3.Loss of eyesight 3. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. Underground electrical hazards are: A. 4.Broken. The following are electrical hazards: Shock. b. -Voltage= a measure of electrical force. 2. De-energize and ground lines when working near them. b.A fast-acting switch monitoring current flow 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: h|UnH}+i-. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. 2.Placed along a wall. What three things must be present for a current to flow through a conductor. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. 0000001896 00000 n Electricity becomes hazardous when it takes an unintended path to complete the ________. a.related to muscle damage. d.The body of the power tool. a.Extension cords c. Inductive objects 0000003640 00000 n 0000005632 00000 n He may have dropped the extension cord at the site and not heard the connector break. b.30,000 volts 2. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. The floor is covered in water and she is barefoot. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. Quiz Question 3: Power cords can be damaged by which of the following? The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. 2.Skin Co-workers provided CPR, but were unable to revive the victim. a. c.The outlet. 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. 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/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs Extension cords are used to: 1.Flammable liquids Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. Which group would be more accurate when used in an accelerating spaceship? View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. startxref 3. BE SAFE! Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. 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. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. The victim provided a path to ground and was electrocuted. The source of the shocks -- the saw -- was not replaced. Latoya is using a mixing motor to mix pool chemicals in a plastic drum. 1.Extension cords The victim collapsed into the lake and sank 4-1/2 feet to the bottom. 3. 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. OSHA 29 CFR 1910.147 . !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ The following references aid in recognizing hazards associated with electrical work. Quiz Question 2: Which is acceptable when using powdered tools? Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. %PDF-1.5 b+t6W' te+.W_{8u7Dt@1c. How might this event affect the ability of animals to obtain energy to live? 12 months C. 6 months D. Never Q23. )KL3C?e%Y92$,]^)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'. He yelled for his co-workers to disconnect the power, which they did. What do tripped circuit breakers and blown fuses indicate? She finds several available in the shop. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . 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. 3.Loose nuts 0000002385 00000 n 0000089142 00000 n a.311 Which of the following are conductor of electricity? 0000001495 00000 n %PDF-1.5 When does electricity become hazardous to humans? a.A small current When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream OSHA requires the testing of a volt meter after a voltage test on voltage above_____. (E) a, b, and c. 2. 2. 4. -Glass. 0000427811 00000 n Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. 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. 0000001731 00000 n 3. specifically addresses electrical protective devices. To avoid injury or death, you must understand and recognize hazards. 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? Draw a line from the item on the left that corresponds to the match on the right. [Flexible Cords and Power Tools]. d.Alert workers of any water in the area, GFCI is an acronym for: (B) Switch sticks. b.Rod [Power Tools]. stream 0000006866 00000 n Ajay needs to use a dewatering pump to drain standing water on a construction site. Of the following choices, which are frequent electrical hazards 0000011060 00000 n Which of the following are caused by contact with electricity? [29 CFR 1926.416(a)(1)]. %PDF-1.4 % 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. 0000003413 00000 n 3.Something that causes current to flow through the . The accident site was wet; also, humidity was high and the victim was sweating. 1. Potential hazards of electricity are preventable if you do which of the following listed below? Select the correct answer and then click DONE. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Bob is asked to repair some overhead wiring, requiring the use a ladder. 2.Grease The most dangerous place to use electrical equipment is? Select the choices that accurately define the common electrical term. 0000008392 00000 n What type of burns are the result of current flowing through and exiting the body? 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. Protection is lost because it will not trip when the system's load has been exceeded. These short objective type questions with answers are very important for competitive exams as well as Board exams. uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. B 208v. g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream 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. 3.Body tissue Which of these can be used as insulating live-line tools for electrical protection. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. :$#k9BPnZ{Qqe/reKy,'ZlB# 2.Using an aluminum ladder when the possibility exists for contact with electricity. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. RZyd Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. b.10 feet 1452 0 obj <> endobj b.Metal [. An examination revealed that the spring, cover plate, and part of the melamine casing were missing from the face of the female connector (the spring and some melamine fragments were found at the accident site). 1.Is firmly connected 1.The humidity of the environment Select the correct answer and then click DONE. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. [Flexible Cords] Cords that are not 3-wire type, not designed for hard-usage, or that have been modified, increase your risk of contacting electrical current. 0000108653 00000 n 4.The amount of current, An electrical burn may affect: Damaged Extension Cord Leaves Arc Welder Ungrounded: A 29-year-old welder attempted to connect a portable arc welder to an electrical outlet using an extension cord. 2.The person's physical condition . c.40,000 volts H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV L%=Kx&0W+ Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. Best practices with power lines include: The workers had removed their shirts and were sweating. True. 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! 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. Select the correct answer and then click DONE. D. near other electrical equipment. [, Use all equipment according to the manufacturer's instructions. 0000004965 00000 n 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. 3.Needs to be reset A measure of the energy of motion of the particles in a substance is its _____. 1.Clench c. Extend the reach of the power tool. 0000001116 00000 n The workers administered CPR to the victim, but to no avail. Ground all power supply systems, electrical circuits, and electrical equipment. Work performed on an electrical system within reaching distance of energized components is_____work. Which of the following are insulators of electricity? -Current= the movement of electrical charge. Most of the hydrides of Group 1A and Group 2A metals are ionic. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. She has an older drill with a steel housing and a 3-prong plug. Quiz Question 7: Which is not an insulator? 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. % As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Look for overhead power lines and buried power line indicators. 0000057373 00000 n . 4.Flex <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. 1452 25 Additional minimum clearance distance is required for power lines carrying over ________. Does the fall qualify as an electrical accident? Quiz: Electrical Hazards. Electrical current travels through insulated ________. OSHA 29 CFR 1910, Subpart P . Get All Answers to OSHA 30 Construction Final Exam. Visually inspect all electrical equipment before use. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? 0000007427 00000 n 1.Missing It's okay to use extension cords with worn insulation, as . Question 2: Which of the following is NOT a category of electrical burns? 5. Determine duration, frequency, degree of exposure to hazards and physical stress.

which of the following are electrical hazards osha quizlet 2023