3.Loss of eyesight The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. Computers 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. %PDF-1.5 endobj 0000024814 00000 n b.811 5 feet Extension cords are used to: A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. 12 months C. 6 months D. Never Q23. 0000419562 00000 n Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. He may have dropped the extension cord at the site and not heard the connector break. a.Supply power for tools or equipment on a temporary or short-term basis. 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: The victim provided a path to ground and was electrocuted. How might this event affect the ability of animals to obtain energy to live? endobj Draw a line from the item on the left that corresponds to the match on the right. . (A) Shotgun sticks. c.15 feet 0000004884 00000 n B 208v. 4. a.Yes, as it is a mobile engine testing station. Select the choices that accurately define the common electrical term. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. Isolating, Power lines may be located underground. c.Gasoline 1.Is faulty Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. The ________ keeps the electricity on its intended path through the conductor. 3.Something that causes current to flow through the . When used on the moon? -Current= the movement of electrical charge. 1 0 obj Select the correct answer and then click DONE. Select the correct answer and then click DONE. 2 0 obj 2.Is working properly b.10 feet 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). c.A measurement of electricity %PDF-1.4 % b.The tool's power cord. 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 . OSHA requires the testing of a volt meter after a voltage test on voltage above_____. hbb``b``3N0 endstream endobj 183 0 obj <>/Metadata 28 0 R/Names 184 0 R/Outlines 23 0 R/Pages 27 0 R/StructTreeRoot 30 0 R/Type/Catalog/ViewerPreferences<>>> endobj 184 0 obj <> endobj 185 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]/Properties<>>>/Rotate 0/StructParents 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 186 0 obj <> endobj 187 0 obj <> endobj 188 0 obj <>stream 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 _5JKy. D. near other electrical equipment. 3.Draped over equipment. b.Yes, as it would be too expensive to install more permanent wiring and receptacles. 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. When it completes a circuit through the body. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB The workers had removed their shirts and were sweating. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? 4,600. Which of the following part of you body can burn if you come in contact with electricity? hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l 4.Running through doorways. 4 0 obj %PDF-1.4 % The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. Use only extension cords that are marked with a designation code for hard or extra-hard usage. Power was supplied through two extension cords from a nearby residence. The contact lasts for 5 seconds before someone is able to shut off the power. A. wrap tape around the damaged spot to prevent electrical shocks. H. Before using the equipment, be sure that the ground wire: 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) Underground electrical hazards are: A. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. 0000089142 00000 n 1.Is firmly connected Select the correct answer and then click DONE. Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. Electrical hazards are life threatening incidents that could happen due to electricity. Intentionally creating a low-resistance path that connects to the earth. Visually inspect all electrical equipment before use. 3. d.Water, Other electrical hazards in the workplace include: 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. Hand-operated metal shifting ropes or cables of electric elevators. -Glass. 1. a.311 0000009628 00000 n 2.Loose screws He yelled for his co-workers to disconnect the power, which they did. Using multi-receptacle boxes designed to be. 0000007116 00000 n Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. c) Establish and enact an assured equipment grounding conductor program (AEGCP) The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . The auger then fell across the other worker, the 24-year-old victim. 1.Fingernails D. Have an ANSI sticker and an expiration date. While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. 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. One handle has a deadman's switch. Select the correct answer and then click DONE. 0000004921 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. 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. 0000005734 00000 n Use tools and equipment according to the instructions included in their listing, labeling or certification. 0000000816 00000 n Question 2: Which of the following are ways . trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream 0000003715 00000 n 0000003640 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. OSHA 10 General Industry Test Answer Key WALKING. and more. 3.Clear 2. 1. Question 1: Employers must ensure that every electric utilization system and all utilization equipment installed, majorly modified, or replaced after March 15, 1972, complies with the standards for electricity set by the National Fire Protection Association, which have been adopted by OSHA. 0000005406 00000 n 4. Freeze d) All of the above. Use only extension cords that are 3-wire type. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . 0000055319 00000 n Which group would be more accurate when used in an accelerating spaceship? Most of the hydrides of Group 1A and Group 2A metals are ionic. 0000427811 00000 n 4.Broken. q>NmnLNmb$"Iyx1bD9.~Ll. d.Metal, Over half of all deaths caused by electricity result from contact with ________. 0000005716 00000 n h|UnH}+i-. D 600v. Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: d. Match the outlet prongs to the extension cord. The small electrical current enters his body through his left leg. Select the correct answer and then click DONE. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. 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: Select the correct answer and then click DONE. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! Yes, because he will be using electricity near water. 3. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. d. 20 feet. Look for overhead power lines and buried power line indicators. Determine duration, frequency, degree of exposure to hazards and physical stress. An employee was texturing a wall using an air compressor. The victim was part of a crew that was constructing a concrete wall. 3 0 obj Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. 1.When you are using electricity near water Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. b.Ground Fault Critical Interrupter b.A fast-acting switch monitoring current flow Electrical Safety Multiple Choice Questions and Answers for competitive exams. Select the correct answer and then click DONE. OSHA 29 CFR 1910.147 . c.falls. d.The body of the power tool. 0000001896 00000 n Provide a safe path to earth ground for electricity. The following references aid in recognizing hazards associated with electrical work. -Severe skin burns. Contact utilities for buried power line locations. This may damage your equipment and cause employee injuries. Bob is asked to repair some overhead wiring, requiring the use a ladder. 0000002479 00000 n In addition to contact with power lines, the top electrical hazards include: The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. 1.Clench startxref To be safe, you must think about your job and plan for hazards. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. Explosion. -Wood. 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. 0000003603 00000 n It is important to note that NFPA 70E is a . xref Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. (b) The same reaction can also be classified as a redox reaction. 1. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. Unless you know otherwise, assume that overhead lines are energized. [Power Tools]. V1?`T`P``ya W3 |"H36K1A@, rO(V[|NAT30 qI? endstream endobj 221 0 obj <>/Filter/FlateDecode/Index[30 152]/Length 27/Size 182/Type/XRef/W[1 1 1]>>stream 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. Check your employee's electrical safety knowledge through an electrical safety quiz. A) 120v . (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. 0000008392 00000 n Select the choices that accurately define the common electrical term. 3.Body tissue a. Gaseous matter What is the output of the program in Exercise 17, if first = 26 and second = 8? b.Rod Take any defective equipment out of service. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. B. outdoors. -If current passes through the body near the heart or brain. (B) Switch sticks. 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. ZR)!=w|; @uT C0? 0000004444 00000 n 0000006893 00000 n 0000018681 00000 n 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. a.Ground Fault Circuit Insulator 3.Needs to be reset Question 2: Which of the following are ways employers must protect their employees on the workplace? Electrocution. Used across walkways. 0000002385 00000 n Draw a line from the item on the left that corresponds to the match on the right. 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 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. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? Apparently, his hand contracted and he was "locked" to the saw. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) Then answer the questions below. -Falls. c. Match the color of the tool to the color of the extension cord. Best practices with power lines include: Frequently inspect electrical systems to insure that the path to ground is continuous. 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. 0000004946 00000 n a.A small current 2. 0000420887 00000 n You should? 1. 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. 2. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. d.Add more outlets. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. 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. When inspecting extension cords, look for: 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. RZyd How will she choose the correct cord? Do not remove ground prongs from cord- and plug-connected equipment or extension cords. 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. lb MKS Use only cords, connection devices, and fittings that are equipped with strain relief. SCENARIO: You encounter a co-worker on a residential remodeling job. 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. 2 0 obj 0000003254 00000 n Visually inspect all electrical equipment before use. If a worker has been retaliated against for using their rights, they 0000004686 00000 n [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. Overview. 0000422244 00000 n If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. The workers administered CPR to the victim, but to no avail. Examples of Equipment That Can Contact Power Lines. Get All Answers to OSHA 30 Construction Final Exam. Question 3: A/an ____________ is a unit of measurement for electrical resistance. Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. 0000001861 00000 n One hand drill was not grounded, and the other had no safety plate. Of the following choices, which are frequent electrical hazards 0000022637 00000 n 0000005520 00000 n (E) a, b, and c. 2. 0000017163 00000 n 0000002733 00000 n 3.When you are using portable power tools Quiz Question 7: Which is not an insulator? The accident site was wet; also, humidity was high and the victim was sweating. 1452 0 obj <> endobj b.Metal endobj 0000002386 00000 n The auger has a one-quarter horsepower motor encased in a metal housing with two handles. <> The floor is covered in water and she is barefoot. 128 0 obj <> endobj xref 128 26 0000000016 00000 n 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. Which of the following are insulators of electricity? 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. a.Conductive objects Co-workers provided CPR, but were unable to revive the victim. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path.
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