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Test your knowledge with our electrical safety quiz below. Examples Of Electrical Hazards. d) All of the above. 0000002876 00000 n
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Which of the following factors determine how severe an electrical injury might be? Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. Intentionally creating a low-resistance path that connects to the earth. Electrical Contractors Industry. c.Three-prong plug @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ Determine duration, frequency, degree of exposure to hazards and physical stress. 4,600. %%EOF
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3. c. Match the color of the tool to the color of the extension cord. q>NmnLNmb$"Iyx1bD9.~Ll. d. heart attacks. 0000007741 00000 n
3. The victim was totally deaf in one ear and suffered diminished hearing in the other. An 18-year-old worker at a construction site was electrocuted when he touched a light fixture while descending from a scaffold for his afternoon break. d.Water, Other electrical hazards in the workplace include: c.Wood Lx*jWP# /c2)|]NXqAx>=~'[ Use only extension cords that are 3-wire type. How might this event affect the ability of animals to obtain energy to live? b.Metal Which of the following injuries can occur when muscles flex or twitch from an electrical shock? Supply power for tools or equipment on a long-term basis. Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. Death is probable. xref
Provides information about the hazards that electrical workers may experience as a part of their jobs. . I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB c. No, because the electricity is needed on a long-term basis. Is the west coast of Africa a plate boundary? 2.Using an aluminum ladder when the possibility exists for contact with electricity. 4. Select the correct answer and then click on DONE. Ground all power supply systems, electrical circuits, and electrical equipment. OSHA 29 CFR 1910, Subpart S . 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+
cGPzNY*oS(m%q{Agp An employee was texturing a wall using an air compressor. 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. 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. 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. 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. 3.Something that causes current to flow through the . Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. Should Ajay use a GFCI? OSHA Safety and Health Topics Page. 1.Damaged cover or insulation 2.Grease This may damage your equipment and cause employee injuries. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . 0000002557 00000 n
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Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. 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 factors that determine the severity of an electrical injury include: 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: Which of the following are caused by contact with electricity? 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. 0000001646 00000 n
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Qp@"]yOnNw89 Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? c.911 0000005050 00000 n
Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. Question 2: Which of the following are ways . The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. 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. Select the correct answer and then click DONE. uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. A. wrap tape around the damaged spot to prevent electrical shocks. Visually inspect all electrical equipment before use. 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! Work performed on an electrical system within reaching distance of energized components is_____work. 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$]r**-I!o66PqK.z
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The laborer, who was wearing leather gloves, received an electric shock and dropped the wire reinforcement, which fell across the power line and simultaneously contacted the metal rail of the scaffold, energizing the entire scaffold. 1. :$#k9BPnZ{Qqe/reKy,'ZlB# a. 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. Best Practices with Power Lines 1. Extension cords had poor splices, no grounds, and reversed polarity. 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. Extension cords are used to: Potential hazards of electricity are preventable if you do which of the following listed below? qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? Lockout/tagout procedures. What is the output of the program in Exercise 17, if first = 26 and second = 8? Select the correct answer and then click DONE. 2.Is working properly Select the correct answer and then click DONE. Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. %
Which of the following are insulators of electricity? The modification of the plug was not an intended use or prescribed by the manufacturer. A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. What is the primary purpose of properly grounding equipment? c.Absorb any water around the area Power was supplied through two extension cords from a nearby residence. Explain the purpose and use of the MyPlate symbol. ZR)!=w|; @uT C0? 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. 1. c.Gasoline 0000021516 00000 n
b.811 BE SAFE! Death. 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. Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. a) Door or window edges B. a.Conductive objects a.Electricity D. near other electrical equipment. Which of the following are insulators of electricity? When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. Select the correct answer and then click DONE. 0000414648 00000 n
In addition to contact with power lines, the top electrical hazards include: d.50,000 volts. 1.Is firmly connected Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l View Answer Answer: 600v 4 . endobj
b.Not wearing insulating shoes or boots when she was handling electrical equipment Select the correct answer and then click DONE. OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and It's okay to use extension cords with worn insulation, as . BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. A. indoors. Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? 0000017163 00000 n
No GFCI's were used. c.15 feet The victim signaled the operator of the crane to extend the boom and lower the hoist cable. If a defective power tool gives you an electric shock, how might your muscles react? 0000001908 00000 n
(See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) 0000015549 00000 n
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3.Loss of eyesight Freeze Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. (3,2,1), (5,4,3). Frequently inspect electrical systems to insure that the path to ground is continuous. 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). 1.Cuts 2.Loose bolts Which of the following part of you body can burn if you come in contact with electricity? %PDF-1.4
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Quiz Question 1: Which of the following is not a category of electrical burns? 1452 25
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. 2.Grounding Besides personal bodily injury, what other electrical hazards can be found in the workplace? Select the correct answer and then click DONE. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. 4.The amount of current, An electrical burn may affect: Co-workers provided CPR, but were unable to revive the victim. Which group would be more accurate when used in an accelerating spaceship? 0000004921 00000 n
A 120v. 4. 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? Use only equipment that is approved to meet OSHA standards. 0000005406 00000 n
Remove cords from receptacles by pulling on the plugs, not the cords. b) By supplying GFCIs, or ground-fault circuit interrupters Select the correct answer and then click DONE. 1.Missing In which of the following workplace situations are you at risk for coming into contact with live electrical . xYmo -ER/&@[D,_! 0000001896 00000 n
b.10 feet gYpV:+ d. Power outlets, ________ are anything that can transmit electrical current. OSHA will keep all identities confidential. Burns. endobj
Draw a line from the item on the left that corresponds to the match on the right. 30 days B. The workers administered CPR to the victim, but to no avail. When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: 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. 0000000016 00000 n
D. Have an ANSI sticker and an expiration date. 1.Flammable liquids 0000003771 00000 n
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If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. OSHA 29 CFR 1910.147 . 3.Clear Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. Select the correct answer and then click DONE. d. No, because an extension cord would not provide enough power. a.Yes, because the electrical shock caused the fall. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 3.Body tissue a.311 0000420277 00000 n
To be safe, you must think about your job and plan for hazards. 0000421627 00000 n
-Conductor= permits the free flow of electricity. 4.Circuit breakers, When inspecting power tools, look for: c. Inductive objects 2. d.The body of the power tool. b. 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. 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. 2.Skin b.30,000 volts c.A measurement of electricity As she is adding in the chemicals, her hand touches the motor and it becomes energized. 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. The accident site was wet; also, humidity was high and the victim was sweating. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. D 600v. 1452 0 obj
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The following references aid in recognizing hazards associated with electrical work. 0000005716 00000 n
Arc Flash. 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. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. These short objective type questions with answers are very important for competitive exams as well as Board exams. 0000013999 00000 n
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b) Staples b.A fast-acting switch monitoring current flow _5JKy. -Current= the movement of electrical charge. Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. c.40,000 volts 0000006152 00000 n
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. 128 0 obj
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c. Extend the reach of the power tool. [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. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? Provide a safe path to earth ground for electricity. The contact lasts for 5 seconds before someone is able to shut off the power. -Grounding= a conductive connection to the earth which acts as a protective measure. 0000012360 00000 n
Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. _.9u'2G_0 Ue]e"x5|Y x_HSqnwmky54YLzeStJi#
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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. 3.When you are using portable power tools Electricity will form a "path" or "loop". 0000004444 00000 n
Quiz Question 2: Which is acceptable when using powdered tools? 1476 0 obj
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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. 5.Twitch, Electrical shock may result in: If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. 1. c) Establish and enact an assured equipment grounding conductor program (AEGCP) 4. B 208v. b.Yes, as it would be too expensive to install more permanent wiring and receptacles. 2. 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. Equipment used in manner prescribed. 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. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. 3.The length of time the body is in contact with electricity Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. 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. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). Look for overhead power lines and buried power line indicators. [. Using multi-receptacle boxes designed to be. 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. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
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Ground all exposed metal parts of equipment. Which of the following are conductor of electricity? Using cords or tools with worn insulation or exposed wires. 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. 0000002403 00000 n
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Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. Using equipment outdoors that is labeled for use only in dry, indoor locations. 4 0 obj
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Yes, because he will be using electricity near water. 1.When you are using electricity near water (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. 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. He plans to use it over a period of at least six months. What was Latoya's first mistake? (E) a, b, and c. 2. 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. The victim provided a path to ground and was electrocuted. One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. 1 0 obj
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Select the correct answer and then click DONE. 0000012944 00000 n
a.Two-prong plug *Effects are for voltages less than about 600 volts. =EAn`u!d, |\~Y>ZF(
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Use tools and equipment according to the instructions included in their listing, labeling or certification. b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. 1.The humidity of the environment 0000007464 00000 n
Select the correct answer and then click DONE. Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? 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. Muscular contraction and nerve damage occur; death likely. c.falls. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. Working with electricity can be dangerous. d.Metal, Over half of all deaths caused by electricity result from contact with ________. Question 2: Which of the following are ways employers must protect their employees on the workplace? Apply a warning tag to any defective tool and do not use it until the problem has been corrected.