Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. -Grounding= a conductive connection to the earth which acts as a protective measure. 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. a. Gaseous matter Question 1: Each year, approximately __________ workers suffer from electricity related injuries. 0000108920 00000 n % 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. Select the correct answer and then click DONE. [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. b. 1. Of the following choices, which are frequent electrical hazards d.The body of the power tool. 0000028595 00000 n Should Ajay use a GFCI? s\A0W+ 0000001116 00000 n b.Not wearing insulating shoes or boots when she was handling electrical equipment Safe operation of hand and portable powered tools and other hand-held equipment. Test your knowledge with our electrical safety quiz below. 0000005042 00000 n The source of the shocks -- the saw -- was not replaced. endobj a. b.811 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. Continually audit cords on-site. b.burns. Draw a line from the item on the left that corresponds to the match on the right. a.related to muscle damage. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. 0000421627 00000 n Underground electrical hazards are: A. 2.Yes, because he is using a portable power tool. a.Your thumb. Out of several possible scenarios, the most likely was contact between the exposed wires of an extension cord and a screw that protruded from the receptacle, which had its face plate removed. D 600v. 1. This is action is also known as creating or completing an electrical circuit. d.A power tool, A GFCI is designed to: gYpV:+ Electrocution. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. b. Deductive objects C. near water. Supply power for tools or equipment on a long-term basis. Then answer the questions below. 0000056642 00000 n =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR 12 months C. 6 months D. Never Q23. endobj OSHA Safety and Health Topics Page. NFPA 70E defines those special circumstances and sets rigid electrical safety limits on voltage exposures, work zone boundary requirements and necessary personal protective equipment (PPE). Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. d. heart attacks. 1.Missing or broken path to ground. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. OSHA 10-Hour Safety Course - Electrical Safety Page 5 of 5 Use the three-stage safety model to stay safe: recognize, evaluate, and control hazards. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. c.falls. As he began to pull away, the crew supervisor yelled to him, asking if the crew could use his water hose to wash out their cement bucket suspended from the crane. A 120v. 0000004273 00000 n Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. Find the energy required to raise an electron from the n=4n=4n=4 state to the n=5n=5n=5 state in Li2+\mathrm{Li}^{2+}Li2+ and in hydrogen atom. 30 days B. Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. 0000017163 00000 n The floor is covered in water and she is barefoot. [Power Tools]. -Severe skin burns. Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. b.Yes, as it would be too expensive to install more permanent wiring and receptacles. 3.ack of ground fault protection. Select the correct answer and then click DONE. 5. B. outdoors. c.Power lines )KL3C?e%Y92$,]^)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'. 2. A measure of the energy of motion of the particles in a substance is its _____. vpfuI)],s Bob is asked to repair some overhead wiring, requiring the use a ladder. 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. 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? <> Quiz Question 2: Which is acceptable when using powdered tools? Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? B 208v. 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. 3.Loss of eyesight The following references aid in recognizing hazards associated with electrical work. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. Quiz Question 1: Which of the following is not a category of electrical burns? Latoya is using a mixing motor to mix pool chemicals in a plastic drum. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. <>>> Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. c. Extend the reach of the power tool. 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). stream 0000004921 00000 n 0000000816 00000 n -Rubber. a.Ground Fault Circuit Insulator An employee was texturing a wall using an air compressor. %PDF-1.4 % 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 Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? 1452 0 obj <> endobj B. Arc Flash. 0000001896 00000 n Question 4: Which of the following is a type of burn caused by electrical hazards? d) All of the above. When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: c) Establish and enact an assured equipment grounding conductor program (AEGCP) !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ endobj 2.Grease Both could have prevented the accident from occuring. d.50,000 volts. d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. 0000001861 00000 n 1.Cuts Select the correct answer and then click DONE. No GFCI's were used. 3. Select the correct answer and then click DONE. Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. 3.The length of time the body is in contact with electricity 0000005520 00000 n 2 0 obj OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and 0000420564 00000 n 4.Flex Working with electricity can be dangerous. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. % Most of the hydrides of Group 1A and Group 2A metals are ionic. Potential hazards of electricity are preventable if you do which of the following listed below? 1.Missing d.Adapter, What is a GFCI? 0000011060 00000 n What factors determine the severity of Dirk's injuries? trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream 0000007427 00000 n 0000007116 00000 n Before work began, the company safety director made sure that insulated line hoses were placed over sections of the the power line near the jobsite and that a safety clearance zone was marked off for arriving cement trucks. Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires Regarding hand protection employers should: A. H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV L%=Kx&0W+ Post warning signs. The following are electrical hazards: Shock. 2. Easy to identify Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? Does the fall qualify as an electrical accident? SCENARIO: You encounter a co-worker on a residential remodeling job. Cardiac arrest or death - A result of electrical shock. 0000002557 00000 n The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. 0000004884 00000 n Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. The auger then fell across the other worker, the 24-year-old victim. 0000420277 00000 n 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. Electrical safety quiz answers are given below. Using multi-receptacle boxes designed to be. Select the correct answer and then click DONE. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. 0000002195 00000 n Match the length from job to outlet. [, Do not modify cords or use them incorrectly. 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: When it completes a circuit through the body. 0000004274 00000 n Ground all power supply systems, electrical circuits, and electrical equipment. The ________ keeps the electricity on its intended path through the conductor. Electrical hazards are life threatening incidents that could happen due to electricity. If you are touching any grounded material while using a power tool 0000422244 00000 n 4. 0000000016 00000 n The victim was totally deaf in one ear and suffered diminished hearing in the other. hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l 0000004208 00000 n H. <> 0000002403 00000 n Question 2: Which of the following are ways . a) Door or window edges stream 0000009628 00000 n Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. 0000108653 00000 n 0000002876 00000 n The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. Provides information about the hazards that electrical workers may experience as a part of their jobs. As she is adding in the chemicals, her hand touches the motor and it becomes energized. 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. A. wrap tape around the damaged spot to prevent electrical shocks. When an electric shock occurs, your muscles may: A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. <> 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. Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? You should? Select the correct answer and then click DONE. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. 1.Extension cords Electrical Safety Multiple Choice Questions and Answers for competitive exams. 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. 0000007694 00000 n d. Match the outlet prongs to the extension cord. De-energize and ground lines when working near them. Computers d.Water, Other electrical hazards in the workplace include: The contact lasts for 5 seconds before someone is able to shut off the power. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. 3.Body tissue 0000002385 00000 n a. Apparently, his hand contracted and he was "locked" to the saw. Isolating, Power lines may be located underground. [29 CFR 1926.416(a)(1)]. 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp a.Two-prong plug b. 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. Frames of non-electrically driven elevator cars to which electric conductors are attached. 1 0 obj Which of the following injuries can occur when muscles flex or twitch from an electrical shock? c.The outlet. 3 0 obj 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. 4 0 obj 2.Loose bolts Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. The victim provided a path to ground and was electrocuted. What type of burns are the result of current flowing through and exiting the body? a.Shut off power within a fraction of a second Effective means of controlling power line hazards include: Examples of Equipment That Can Contact Power Lines. 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 . -Glass. OSHA 29 CFR 1910, Subpart S . 0000006866 00000 n Additionally, the ground prongs were missing from the two cords. Using cords or tools with worn insulation or exposed wires. OSHA 29 CFR 1910, Subpart P . Which of the following are insulators of electricity? 182 0 obj <> endobj xref 182 41 0000000016 00000 n ( Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. c.15 feet Be sure equipment that has been shop fabricated or altered is in compliance. The small electrical current enters his body through his left leg. One hand drill was not grounded, and the other had no safety plate. 4. The workers administered CPR to the victim, but to no avail. Using a dry wood ladder when the possibility exists for contact with electricity. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. Looking for NFPA 70E Certification? He yelled for his co-workers to disconnect the power, which they did. d) All of the above. 0000001814 00000 n Electricity will form a "path" or "loop". specifically addresses electrical protective devices. 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. 0000007464 00000 n endobj In addition to contact with power lines, the top electrical hazards include: 0000006152 00000 n 1.A source of electrical current to flow. a.Extension cords Equipment used in manner prescribed. 1.The humidity of the environment x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q 1.Fingernails Burns. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. 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. One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. 0000012944 00000 n 3. The most dangerous place to use electrical equipment is? Which group would be more accurate when used in an accelerating spaceship? 1.Flammable liquids <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Best practices with power lines include: 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: Apply a warning tag to any defective tool and do not use it until the problem has been corrected. xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. What is the minimum clearance distance you must maintain from the power lines? A. indoors. _5JKy. 1. -Wood. Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. Additional minimum clearance distance is required for power lines carrying over ________. Electrical Hazards Electrical hazards can be found in nearly every roofing work site. This may damage your equipment and cause employee injuries. Using tools and equipment that can contact power lines increases the risk. 1.Pain Provide a safe path to earth ground for electricity. 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. d.Alert workers of any water in the area, GFCI is an acronym for: c.Touching the motor b.30,000 volts Besides personal bodily injury, what other electrical hazards can be found in the workplace? Do not remove ground prongs from cord- and plug-connected equipment or extension cords. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. 0000001646 00000 n %PDF-1.4 % 1. He may have dropped the extension cord at the site and not heard the connector break. Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. 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. 0000014257 00000 n High humidity b) Staples Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). hazard or that their employer is not following OSHA's rules. 3.Draped over equipment. Yes, because he will be using electricity near water. A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. Visually inspect all electrical equipment before use. 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.
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