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.Is working properly Select the correct answer and then click DONE. While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. Question 2: Which of the following are ways employers must protect their employees on the workplace? d. No, because an extension cord would not provide enough power. 0000427811 00000 n d.The body of the power tool. Should he use an extension cord to power it? The victim was part of a crew that was constructing a concrete wall. c.Three-prong plug 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: 3.Tears 0000110659 00000 n 4.No, because he does not need to use an extension cord. 1 0 obj 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. %PDF-1.4 % <> Effective means of controlling power line hazards include: C. near water. a.Conductive objects 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 Does the fall qualify as an electrical accident? 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. 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. 2.Loose bolts The following are electrical hazards: Shock. Use only extension cords that are marked with a designation code for hard or extra-hard usage. Looking for NFPA 70E Certification? Equipment used in manner prescribed. Frames of non-electrically driven elevator cars to which electric conductors are attached. <>>> 0000003603 00000 n 2.Yes, because he is using a portable power tool. Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp Supply power for tools or equipment on a long-term basis. Is split 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. 0000003715 00000 n Electricity will form a "path" or "loop". Intentionally creating a low-resistance path that connects to the earth. (3,2,1), (5,4,3). c.The outlet. b.Not wearing insulating shoes or boots when she was handling electrical equipment The ________ keeps the electricity on its intended path through the conductor. Select the correct answer and then click DONE. 0000421920 00000 n d.50,000 volts. a) Ensure overhead power line safety 182 0 obj <> endobj xref 182 41 0000000016 00000 n Use tools and equipment according to the instructions included in their listing, labeling or certification. 0000005406 00000 n b+t6W' te+.W_{8u7Dt@1c. Select the correct answer and then click DONE. 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. xref Ajay needs to use a dewatering pump to drain standing water on a construction site. 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. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: Be sure equipment that has been shop fabricated or altered is in compliance. 0000002385 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. Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. endobj 0000011060 00000 n Best Practices with Power Lines 1. Of the following choices, which are frequent electrical hazards 0000000816 00000 n he most common shock-related injuries are: 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 0000414648 00000 n Visually inspect all electrical equipment before use. 30 days B. Carly needs to use an extension cord with her corded nail gun. Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. 2.Placed along a wall. You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. Outlets 0000003640 00000 n Electrical current travels through insulated ________. 0000004686 00000 n Improper Use of Extension and Flexible Cords. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . RZyd 3.ack of ground fault protection. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. 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. 5.Twitch, Electrical shock may result in: d.Alert workers of any water in the area, GFCI is an acronym for: In addition to contact with power lines, the top electrical hazards include: Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. What is the minimum clearance distance you must maintain from the power lines? _5JKy. Burns. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. 0000012944 00000 n Electrical Contractors Industry. %%EOF A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. 0000004793 00000 n a.Yes, because the electrical shock caused the fall. Question 2: Which of the following are ways . Lockout/tagout procedures. 0000006152 00000 n c.40,000 volts 3.Body tissue The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. endobj Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. d.A power tool, A GFCI is designed to: 2.Complete a. Gaseous matter OSHA Safety and Health Topics Page. 3 0 obj A. wrap tape around the damaged spot to prevent electrical shocks. Dust Work performed on an electrical system within reaching distance of energized components is_____work. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. 0000001495 00000 n Easy to identify 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). Contact utilities for buried power line locations. [29 CFR 1926.416(a)(1)]. a) Door or window edges Should Ajay use a GFCI? c.A measurement of electricity 2.Using an aluminum ladder when the possibility exists for contact with electricity. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. To be safe, you must think about your job and plan for hazards. 4. One handle has a deadman's switch. 0000002386 00000 n 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+ 0000005734 00000 n a.A small current The auger has a one-quarter horsepower motor encased in a metal housing with two handles. Provide a safe path to earth ground for electricity. Select the correct answer and then click on DONE. b.Shut off power within five minutes of the imbalance True. endobj 3. 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. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). View Answer Answer: 600v 4 . 2.Grounding Additional minimum clearance distance is required for power lines carrying over ________. The victim used two extension cords to supply power: a home-made cord plugged into an ungrounded receptacle on the pole, and a UL-approved cord extending from the homemade cord to the saw. Question 1: Which of the following is a danger of electricity? 2.Loss of muscle control 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. 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. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? Which of the following part of you body can burn if you come in contact with electricity? 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. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? 0000056642 00000 n )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'. 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. 0000005716 00000 n OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ The small electrical current enters his body through his left leg. Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. |tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s 2.Using extension cords or electrical tools properly. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. Quiz Question 2: Which is acceptable when using powdered tools? Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. q>NmnLNmb$"Iyx1bD9.~Ll. 1476 0 obj <>stream This may damage your equipment and cause employee injuries. a. 3.No, because he will not be touching any grounded material when using the tool. 0000004274 00000 n Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. 3.Needs to be reset vpfuI)],s Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. 0000001672 00000 n 0000000016 00000 n 5 feet x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q The victim signaled the operator of the crane to extend the boom and lower the hoist cable. Electrical Hazards Electrical hazards can be found in nearly every roofing work site. 2. (A) Shotgun sticks. What type of burns are the result of current flowing through and exiting the body? specifically addresses electrical protective devices. Select the choices that accurately define the common electrical term. 3. 0000002479 00000 n *Effects are for voltages less than about 600 volts. 0000001908 00000 n In which of the following workplace situations are you at risk for coming into contact with live electrical . 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. 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. 2. 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: c.Gasoline 0000012360 00000 n endobj 0000422244 00000 n 4.Must be replaced, Always use a GFCI: Extension cords had poor splices, no grounds, and reversed polarity. 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 What do tripped circuit breakers and blown fuses indicate? _.9u'2G_0 Ue]e"x5|Y 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. 0000021516 00000 n Question 1: Which of these is a type of Ground Fault Circuit Adapter? <> 1.Clench What three things must be present for a current to flow through a conductor. Electric current cannot exist without an unbroken path to and from the conductor. 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. When current travels through your body - Definition of electric shock, Choose the primary cause of an electric shock, Electric shock is caused when current travels through the body, the exits the ground. 0000002876 00000 n 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. This is action is also known as creating or completing an electrical circuit. 0000007741 00000 n a. Post warning signs. <<7628BB2D46738F42B2FC6393656F4718>]>> 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? Quiz: Electrical Hazards. 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. 4.Broken. BE SAFE! 2.Flooding 0000003900 00000 n Potential hazards of electricity are preventable if you do which of the following listed below? Select the correct answer and then click DONE. 3.Loose nuts (b) The same reaction can also be classified as a redox reaction. Extension cords are used to: using a 30-amp breaker in a system with 15- or 20-amp receptacles. 0000055319 00000 n 3.Clear On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. 128 0 obj <> endobj xref 128 26 0000000016 00000 n A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. Arc Flash. 0000002150 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. 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. Use only extension cords that are 3-wire type. 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 . The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. and more. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. 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.
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