1.Is faulty Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. a.Two-prong plug 3.The length of time the body is in contact with electricity 0000010155 00000 n
0000024814 00000 n
Select the correct answer and then click DONE. C 277v. d. No, because an extension cord would not provide enough power. 3 0 obj
A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. 0000108653 00000 n
Which of the following are caused by contact with electricity? 0000007694 00000 n
Hand-operated metal shifting ropes or cables of electric elevators. Dust Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. He plans to use it over a period of at least six months. A. indoors. 0000414648 00000 n
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. What was Latoya's first mistake? d.50,000 volts. 0000007464 00000 n
a.Standing in water In which of the following workplace situations are you at risk for coming into contact with live electrical . Freeze A) 120v . Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. 0000001646 00000 n
Use only cords, connection devices, and fittings that are equipped with strain relief. d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. 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 4. An employee was texturing a wall using an air compressor. a.related to muscle damage. (3,2,1), (5,4,3). 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! 0000089142 00000 n
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0000003900 00000 n
a.20,000 volts Electricity will form a "path" or "loop". 3.When you are using portable power tools Use only extension cords that are 3-wire type. 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. 4. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. c. Inductive objects 2 0 obj
3. What is the most common, non-fatal, electrical shock-related injury? 0000017163 00000 n
BE SAFE! 0000014257 00000 n
2.Something to transport the electrical current -- A conductor. he most common shock-related injuries are: Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. Other protective measures include guarding or insulating the lines. 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. . c) Establish and enact an assured equipment grounding conductor program (AEGCP) <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
3.Needs to be reset Frequently inspect electrical systems to insure that the path to ground is continuous. %PDF-1.5
No GFCI's were used. Electrical Contractors Industry. a) Ensure overhead power line safety -Damage to internal organs. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. 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. (E) a, b, and c. 2. OSHA 29 CFR 1910.147 . He yelled for his co-workers to disconnect the power, which they did. endobj
How fast would the ball be moving at the moment of release? Use tools and equipment according to the instructions included in their listing, labeling or certification. De-energize and ground lines when working near them. Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. The following references aid in recognizing hazards associated with electrical work. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. Use only equipment that is approved to meet OSHA standards. a.Your thumb. Quiz: Electrical Hazards. A fan connected to a 120-volt electrical system via an extension cord provided ventilation for a worker performing a chipping operation from an aluminum stepladder. Electrical safety quiz answers are given below. The victim was totally deaf in one ear and suffered diminished hearing in the other. Potential hazards of electricity are preventable if you do which of the following listed below? 1. 3. 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. True. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. Does the fall qualify as an electrical accident? 0000021516 00000 n
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4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. Used across walkways. Which of the following part of you body can burn if you come in contact with electricity? She finds several available in the shop. To be safe, you must think about your job and plan for hazards. Electrocution. Carly needs to use an extension cord with her corded nail gun. hbb``b``3N0
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Question 4: Which of the following is a type of burn caused by electrical hazards? Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. b.Metal Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). Does the fall qualify as an electrical accident? hazard or that their employer is not following OSHA's rules. c) Age 2. Work performed on an electrical system within reaching distance of energized components is_____work. 4.Broken. Both could have prevented the accident from occuring. 0000001495 00000 n
-If current passes through the body near the heart or brain. d/E
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/\"BQ>Rkl6xZWtAgfs The victim collapsed into the lake and sank 4-1/2 feet to the bottom. D. Have an ANSI sticker and an expiration date. 0000001604 00000 n
a. c. Match the color of the tool to the color of the extension cord. d.Add more outlets. If a defective power tool gives you an electric shock, how might your muscles react? Select the correct answer and then click DONE. H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV
L%=Kx&0W+ 0000002150 00000 n
A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. b.Ground Fault Critical Interrupter 12 months C. 6 months D. Never Q23. C. near water. b. Electrical hazards are life threatening incidents that could happen due to electricity. b.burns. Outlets [Flexible Cords and Power Tools]. Check your employee's electrical safety knowledge through an electrical safety quiz. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. a.Conductive objects What do tripped circuit breakers and blown fuses indicate? Select the correct answer and then click DONE. Handling Damaged Extension Cord When Energized: A 19-year-old construction laborer was working with his foreman and another laborer to construct a waterfront bulkhead for a lakeside residence. 0000108920 00000 n
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$TQCvK*eg&|Y596#H\ The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. 0000004965 00000 n
c.The outlet. The factors that determine the severity of an electrical injury include: 0000004793 00000 n
hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: 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. You need to evaluate the situation you are in and assess your . (A) Shotgun sticks. B. Visually inspect all electrical equipment before use. 1.Is firmly connected Protection is lost because it will not trip when the system's load has been exceeded. 1.Missing or broken path to ground. Draw a line from the item on the left that corresponds to the match on the right. Is split Explosion 3.Body tissue d.Water, Other electrical hazards in the workplace include: A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. What is the output of the program in Exercise 17, if first = 26 and second = 8? 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. 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. Using cords or tools with worn insulation or exposed wires. Underground electrical hazards are: A. The most dangerous place to use electrical equipment is? Ajay needs to use a dewatering pump to drain standing water on a construction site. The accident site was wet; also, humidity was high and the victim was sweating. 0000007427 00000 n
1.Extension cords A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. View Answer Answer: 600v 4 . Question 2: Which of the following are ways employers must protect their employees on the workplace? Provides information about the hazards that electrical workers may experience as a part of their jobs. 0000001861 00000 n
Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. True. 3.Vapor Frames of non-electrically driven elevator cars to which electric conductors are attached. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? Get All Answers to OSHA 30 Construction Final Exam. 0000068035 00000 n
Which of the following are insulators of electricity? c.Gasoline [, Do not modify cords or use them incorrectly. 0000004274 00000 n
0000001731 00000 n
5. Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. 3.Loss of eyesight SCENARIO: You encounter a co-worker on a residential remodeling job. 0000002479 00000 n
When does electricity become hazardous to humans? As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. Intentionally creating a low-resistance path that connects to the earth. 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 . Power was supplied through two extension cords from a nearby residence. [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. -Severe skin burns. b. The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. When an electric shock occurs, your muscles may: Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. Isolating, Power lines may be located underground. x_HSqnwmky54YLzeStJi#
TZObFT*.#BQF/Q (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. c.15 feet b.811 0000056642 00000 n
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. gYpV:+ c. Extend the reach of the power tool. In addition to contact with power lines, the top electrical hazards include: <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
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_5JKy. -Voltage= a measure of electrical force. Identify the oxidizing and reducing agents. 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) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. 0000002195 00000 n
Select the correct answer and then click DONE. 0000005632 00000 n
Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. Muscular contraction and nerve damage occur; death likely. It is important to note that NFPA 70E is a . 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. Should Ajay use a GFCI? Which group would be more accurate when used in an accelerating spaceship? Which of these can be used as insulating live-line tools for electrical protection. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. Draw a line from the item on the left that corresponds to the match on the right. A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. Latoya is using a mixing motor to mix pool chemicals in a plastic drum. 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. De-energizing Which of the following can be the result of electric shock? 0000005734 00000 n
2.Is working properly OSHA 10 General Industry Test Answer Key WALKING. D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. b. Deductive objects A 120v. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. Yes, because he will be using electricity near water. 0000010603 00000 n
What factors determine the severity of Dirk's injuries? b.Yes, because Bob was on . 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. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. 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? c.Three-prong plug Quiz Question 9: Conductor insulation must be approved for the ___________ of use? 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. 2.Loose bolts a.A small current 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. Test your knowledge with our electrical safety quiz below. xYmo -ER/&@[D,_! (C) Hot sticks. Explain the purpose and use of the MyPlate symbol. Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. 1.Damaged cover or insulation c.911 1. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. 0000421920 00000 n
Select the correct answer and then click DONE. 4.Circuit breakers, When inspecting power tools, look for: 3.Something that causes current to flow through the . 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. Unless you know otherwise, assume that overhead lines are energized. d.Metal, Over half of all deaths caused by electricity result from contact with ________. 0000000816 00000 n
It's okay to use extension cords with worn insulation, as . 0000420887 00000 n
a.Yes, as it is a mobile engine testing station. B 208v. 5 feet Question 3: A/an ____________ is a unit of measurement for electrical resistance. You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. [, Use all equipment according to the manufacturer's instructions. A co-worker disconnected the power cord to the saw, too late to save the victim. 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. Wearing a baseball cap 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. 0000002403 00000 n
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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? stream
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@*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. Effective means of controlling power line hazards include: HWMo#7v#h>6,Z4- b+t6W' te+.W_{8u7Dt@1c. 1.Fingernails The workers had removed their shirts and were sweating. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. 4.Must be replaced, Always use a GFCI: Question 1: Which of these is a type of Ground Fault Circuit Adapter? Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. 1.Pain 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. Select the correct answer and then click DONE. 0000028595 00000 n
4.Flex q>NmnLNmb$"Iyx1bD9.~Ll. The laborer, who was wearing leather gloves, received an electric shock and dropped the wire reinforcement, which fell across the power line and simultaneously contacted the metal rail of the scaffold, energizing the entire scaffold. c.Absorb any water around the area A) Identify; Castigate; C) Evaluate; D) Modify; 3. 0000003603 00000 n
:$#k9BPnZ{Qqe/reKy,'ZlB# 3.No, because he will not be touching any grounded material when using the tool. 0000012360 00000 n
These short objective type questions with answers are very important for competitive exams as well as Board exams. 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. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. 182 0 obj
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3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. _.9u'2G_0 Ue]e"x5|Y -Wood. This is action is also known as creating or completing an electrical circuit. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) a. Select the correct answer and then click DONE. What type of burns are the result of current flowing through and exiting the body? B. outdoors. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. 0000004273 00000 n
d.Adapter, What is a GFCI? 1. 2.Placed along a wall. Question 1: Each year, approximately __________ workers suffer from electricity related injuries. Select the choices that accurately define the common electrical term. (B) Switch sticks. 4,600. d. heart attacks. c.Touching the motor c. No, because the electricity is needed on a long-term basis. 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. Explosion. 0000006152 00000 n
Select the correct answer and then click DONE. Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. d. Not checking to make sure that the motor was properly grounded, If the circuit does not turn off when testing the GFCI, the GFCI: b.Not wearing insulating shoes or boots when she was handling electrical equipment He may have dropped the extension cord at the site and not heard the connector break. 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: 3.Tears 0000001116 00000 n
a.Electricity <>>>
This caused him to fall from the ladder and land in a puddle of water, still holding the saw. 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.
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