which of the following are electrical hazards osha quizlet

0000420277 00000 n Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. Additionally, the ground prong was missing and there was no GFCI protection. Freeze a.Extension cords Both could have prevented the accident from occuring. 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 . What is the minimum clearance distance you must maintain from the power lines? d) All of the above. 0000421627 00000 n Potential hazards of electricity are preventable if you do which of the following listed below? 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. How fast would the ball be moving at the moment of release? Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. Additionally, the ground prongs were missing from the two cords. b+t6W' te+.W_{8u7Dt@1c. Look for overhead power lines and buried power line indicators. Is not painted over As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. 0 Working with electricity can be dangerous. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. stream When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. A. indoors. Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. a.Conductive objects Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. Explosion d.A power tool, A GFCI is designed to: When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: Bob is asked to repair some overhead wiring, requiring the use a ladder. Extension cords had poor splices, no grounds, and reversed polarity. 4 0 obj 0000003771 00000 n The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. b.Not wearing insulating shoes or boots when she was handling electrical equipment While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. specifically addresses electrical protective devices. 0000015549 00000 n a.A small current Examples Of Electrical Hazards. 1452 0 obj <> endobj 0000001604 00000 n a.Supply power for tools or equipment on a temporary or short-term basis. 30 days B. 4.No, because he does not need to use an extension cord. 0000011060 00000 n B. 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). Using equipment outdoors that is labeled for use only in dry, indoor locations. 0000028595 00000 n Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? Explosion. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: Select the choices that accurately define the common electrical term. 2.The person's physical condition A. wrap tape around the damaged spot to prevent electrical shocks. (E) a, b, and c. 2. Which of the following are conductor of electricity? OSHA will keep all identities confidential. Select the choices that accurately define the common electrical term. 1.Fingernails Improper Use of Extension and Flexible Cords. What type of burns are the result of current flowing through and exiting the body? endobj <> How will she choose the correct cord? Electrical current travels through insulated ________. BE SAFE! Frames of non-electrically driven elevator cars to which electric conductors are attached. 0000002385 00000 n d. Power outlets, ________ are anything that can transmit electrical current. 0000002479 00000 n The following references aid in recognizing hazards associated with electrical work. b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. 0000007694 00000 n If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. (D) None of the above. x=k6S *ywvkDyb_w rg&@Q5/^4O_~w/]7[xqs7Zt?LK-,>W\W`Mb?n8\.vpOJA7~5R%.oJd|Bbv7biQH%^~C=m3_ov{8] }C.Se={o7H[w@/^j BgXRC/O/eiLHiN\4~7x=^J@|]zu"x]lQ-+.xF=oY +B?jSl|(agF_].+UH\!/;AU .cG!h@42 iqnkZtdc#^)AX96(wFZ,RP{[\j\aJgc) diV;BNzZge(}=0Pj Qp@"]yOnNw89 Which of the following part of you body can burn if you come in contact with electricity? 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. ( The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. Supply power for tools or equipment on a long-term basis. DHPP0MHLHIPPXc f2LXL"dgJ:@ ys`llr-shH,Y@Z 23J0a_TXD;X,;&0i,i&f&T8h R/ v`,l. 440!2D9482q={LPXs +( endstream endobj 129 0 obj <> endobj 130 0 obj <> endobj 131 0 obj <>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageB]/ExtGState<>>> endobj 132 0 obj <> endobj 133 0 obj <> endobj 134 0 obj <> endobj 135 0 obj <>stream Effective means of controlling power line hazards include: (3,2,1), (5,4,3). 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. Select the correct answer and then click DONE. c) Establish and enact an assured equipment grounding conductor program (AEGCP) 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. [, Do not modify cords or use them incorrectly. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. )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'. s\A0W+ 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. Visually inspect all electrical equipment before use. Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. 0000001908 00000 n 3.Vapor . What is the output of the program in Exercise 17, if first = 26 and second = 8? I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB The auger has a one-quarter horsepower motor encased in a metal housing with two handles. 2.Loose bolts Ajay needs to use a dewatering pump to drain standing water on a construction site. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . 4. Select the correct answer and then click DONE. Check your employee's electrical safety knowledge through an electrical safety quiz. lb MKS When an electric shock occurs, your muscles may: Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. b.Electrical tools Which of the following are caused by contact with electricity? 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. endobj a.related to muscle damage. 5. 1. 0000010155 00000 n 2. 0000057373 00000 n OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. View Answer Answer: 600v 4 . 0000414648 00000 n Latoya is using a mixing motor to mix pool chemicals in a plastic drum. 0000006866 00000 n Before using the equipment, be sure that the ground wire: Select the correct answer and then click DONE. BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. 12 months C. 6 months D. Never Q23. When inspecting extension cords, look for: 1.Is faulty The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. %PDF-1.5 endobj <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. The following are electrical hazards: Shock. b.30,000 volts A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. 5.Twitch, Electrical shock may result in: 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. Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. Outlets Match the length from job to outlet. b) Staples What do tripped circuit breakers and blown fuses indicate? The victim was totally deaf in one ear and suffered diminished hearing in the other. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. 0000006152 00000 n B 208v. d) All of the above. 2.Flooding 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. 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. 2.Using extension cords or electrical tools properly. 0000000816 00000 n Whether the hazard is posed by worn or damaged power tools or cords, improperly grounded tools or equipment, or the presence of standing water, it is the responsibility of the contractor to make sure the tools and equipment b. The modification of the plug was not an intended use or prescribed by the manufacturer. 1.Missing a.Electricity 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 \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. If a worker has been retaliated against for using their rights, they 1.Missing or broken path to ground. The floor is covered in water and she is barefoot. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. 0000000816 00000 n 0000004686 00000 n Continually audit cords on-site. 128 0 obj <> endobj xref 128 26 0000000016 00000 n 3 0 obj In which of the following workplace situations are you at risk for coming into contact with live electrical . 0000003640 00000 n Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream H\n0)M) 0Ir(,?FoKhdklz6zHG;mOqOh-tv.]NGv~d.m\S{|Fo-x-\"1X/niCYeq"ol8D~&?Kr V_/9yf 9JV%J899s{_G#R0="dL5,p: Isolating, Power lines may be located underground. 1.Damaged cover or insulation When used on the moon? The victim signaled the operator of the crane to extend the boom and lower the hoist cable. 0000110659 00000 n b.burns. q>NmnLNmb$"Iyx1bD9.~Ll. he most common shock-related injuries are: 0000003900 00000 n Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. The small electrical current enters his body through his left leg. d.Add more outlets. If you are touching any grounded material while using a power tool Select the correct answer and then click DONE. 1.Extension cords 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. Dust Question 2: Which of the following are ways . 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. b.Ground Fault Critical Interrupter Using a dry wood ladder when the possibility exists for contact with electricity. . Hand-operated metal shifting ropes or cables of electric elevators. and more. OSHA 29 CFR 1910, Subpart S . 3.Needs to be reset %PDF-1.4 % True. If a defective power tool gives you an electric shock, how might your muscles react? In addition to contact with power lines, the top electrical hazards include: OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 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. Question 2: Which of the following are ways employers must protect their employees on the workplace? The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. 0000024814 00000 n b.Shut off power within five minutes of the imbalance 2 0 obj d. No, because an extension cord would not provide enough power. The victim provided a path to ground and was electrocuted. 0000013716 00000 n Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. Before work began, the company safety director made sure that insulated line hoses were placed over sections of the the power line near the jobsite and that a safety clearance zone was marked off for arriving cement trucks. 4,600. Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . 1.A source of electrical current to flow. %PDF-1.4 % Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. Draw a line from the item on the left that corresponds to the match on the right. 0000009628 00000 n Select the correct answer and then click DONE. True. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. 0000005716 00000 n 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. 0000000016 00000 n To avoid injury or death, you must understand and recognize hazards. a.311 3. 0000004208 00000 n 1.Is firmly connected Use only cords, connection devices, and fittings that are equipped with strain relief. c.Guaranteed Fault Circuit Interrupter 0000007116 00000 n Co-workers provided CPR, but were unable to revive the victim. 3.No, because he will not be touching any grounded material when using the tool. 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. 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. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. 2. What factors determine the severity of Dirk's injuries? Test your knowledge with our electrical safety quiz below. Computers <<7628BB2D46738F42B2FC6393656F4718>]>> Is the west coast of Africa a plate boundary? a.Two-prong plug 4.Must be replaced, Always use a GFCI: D. Have an ANSI sticker and an expiration date. 0000001646 00000 n a.20,000 volts 1.Cuts (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. What three things must be present for a current to flow through a conductor. b.811 3.Tears An employee was texturing a wall using an air compressor. The victim was part of a crew that was constructing a concrete wall. Get All Answers to OSHA 30 Construction Final Exam. Apparently, his hand contracted and he was "locked" to the saw. Used across walkways. 1.The humidity of the environment h|UnH}+i-. The contact lasts for 5 seconds before someone is able to shut off the power. 0000001731 00000 n Electrical Contractors Industry. 0000004444 00000 n 0000002557 00000 n <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Take any defective equipment out of service. 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. Use only extension cords that are 3-wire type. 4.Running through doorways. 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: SCENARIO: You encounter a co-worker on a residential remodeling job. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 1. 0000014257 00000 n endobj 0000006893 00000 n Use only equipment that is approved to meet OSHA standards. 2.Complete _5JKy. C 277v. 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 3. Does the fall qualify as an electrical accident? 3 0 obj The auger then fell across the other worker, the 24-year-old victim. A measure of the energy of motion of the particles in a substance is its _____.

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