3 0 obj endobj She has an older drill with a steel housing and a 3-prong plug. -Grounding= a conductive connection to the earth which acts as a protective measure. 0000003640 00000 n De-energize and ground lines when working near them. 0000012360 00000 n 0000005632 00000 n 0000007116 00000 n Of the following choices, which are frequent electrical hazards On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. b. Deductive objects 1. 2.Something to transport the electrical current -- A conductor. 0000108653 00000 n a.Yes, as it is a mobile engine testing station. Is split 0000007741 00000 n 2. 0000001908 00000 n 3. 0000004946 00000 n [, Use all equipment according to the manufacturer's instructions. (3,2,1), (5,4,3). a.Ground Fault Circuit Insulator (A) Shotgun sticks. Question 3: A/an ____________ is a unit of measurement for electrical resistance. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? C. near water. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. The ground wire was not attached on the male end of the cord's plug. hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l Improper Use of Extension and Flexible Cords. 0000002386 00000 n Electricity will form a "path" or "loop". Remove cords from receptacles by pulling on the plugs, not the cords. 2.Yes, because he is using a portable power tool. 3. Occupational Safety & Health Administration, Death Due to Lack of Ground-Fault Protection, Deaths Due to Missing or Discontinuous Path to Ground, Deaths Due to Equipment Not Used in Manner Prescribed, Deaths Due to Improper Use of Extension and Flexible Cords, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Improper use of extension and flexible cords, Electrical Safety: Safety and Health for Electrical Trades Student Manual, ground-fault circuit interrupters (GFCI)s, assured equipment grounding conductor program (AEGCP), Electricity and Tree Care Work A Deadly Combination, Working Safely Around Downed Electrical Wires, Electrical Safety Hazards of Overloading Cable Trays, Small Business Safety and Health Handbook, Fire Fighters Exposed to Electrical Hazards During Wildland Fire Operations, Fatality Assessment and Control Evaluation (FACE) Program, NIOSH Face Reports Indexed by Industry or Cause of Fatality, Worker Deaths by Electrocution: A Summary of Surveillance Findings and Investigative Case Reports, Severe Storm and Flood Recovery Assistance. Electrical hazards are life threatening incidents that could happen due to electricity. When it completes a circuit through the body. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? 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. A) Identify; Castigate; C) Evaluate; D) Modify; 3. Unless you know otherwise, assume that overhead lines are energized. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. 0000010155 00000 n 0000001814 00000 n *Effects are for voltages less than about 600 volts. Overview. c.falls. 0000010603 00000 n 2. 0000004444 00000 n Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. Does the fall qualify as an electrical accident? D. Have an ANSI sticker and an expiration date. Ajay needs to use a dewatering pump to drain standing water on a construction site. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. The source of the shocks -- the saw -- was not replaced. Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. 0000014257 00000 n Is not broken, Question Text: Electrical tools should be grounded with a(n)________. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. The auger then fell across the other worker, the 24-year-old victim. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. 2.Loss of muscle control Explosion. d. heart attacks. 1 0 obj 0000420564 00000 n a. _5JKy. Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. 1452 0 obj <> endobj c) Age She finds several available in the shop. Select the correct answer and then click DONE. 4,600. It is important to note that NFPA 70E is a . When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. Explosion This may damage your equipment and cause employee injuries. 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. True. Computers Is the west coast of Africa a plate boundary? 5.Twitch, Electrical shock may result in: trailer a.Two-prong plug 1.Is firmly connected gYpV:+ b) Staples A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. 0000001896 00000 n 0000003413 00000 n h|UnH}+i-. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. 3.Body tissue x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q a.Your thumb. Examples Of Electrical Hazards. a.Extension cords Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? Use only equipment that is approved to meet OSHA standards. 0000017336 00000 n 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). What is the minimum clearance distance you must maintain from the power lines? Lockout/tagout procedures. 0000110659 00000 n -Rubber. 12 months C. 6 months D. Never Q23. [Flexible Cords and Power Tools]. A co-worker disconnected the power cord to the saw, too late to save the victim. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. 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. 2. a.Electricity Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. Only after a rescue squad arrived about 4 minutes later did anyone realize that the crane was in contact with a power line -- all those present had assumed that the victim had suffered a heart attack. 2.Is working properly You should? 1.The humidity of the environment 2.Loose screws b.Ground Fault Critical Interrupter He may have dropped the extension cord at the site and not heard the connector break. c.Absorb any water around the area Is not painted over Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. 0000004686 00000 n Quiz Question 1: Which of the following is not a category of electrical burns? OSHA 29 CFR 1910, Subpart P . 0000004965 00000 n 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. Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. A. indoors. One hand drill was not grounded, and the other had no safety plate. Which of the following are insulators of electricity? 3.Needs to be reset 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. Explain the purpose and use of the MyPlate symbol. D. near other electrical equipment. Extension cords had poor splices, no grounds, and reversed polarity. 0000006866 00000 n 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. :$#k9BPnZ{Qqe/reKy,'ZlB# [. Which of the following factors determine how severe an electrical injury might be? 2.Loose bolts HJ=S~68438IR/:VR C Y<7H*$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 "*D using a 30-amp breaker in a system with 15- or 20-amp receptacles. 5 feet 0000011060 00000 n 4.Must be replaced, Always use a GFCI: 1.A source of electrical current to flow. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. lex has set up a mobile engine testing station in the maintenance area. 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. <> b.Electrical tools You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. endobj 3.Vapor The victim was totally deaf in one ear and suffered diminished hearing in the other. 2.Grounding Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. ZR)!=w|; @uT C0? Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. stream 2. Quiz: Electrical Hazards. a) Ensure overhead power line safety 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. What three things must be present for a current to flow through a conductor. 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. c.Power lines Outlets Carly needs to use an extension cord with her corded nail gun. 0000003254 00000 n To be safe, you must think about your job and plan for hazards. Use non-conductive wood or fiberglass ladders when working near power lines. 0 D 600v. 2.Using an aluminum ladder when the possibility exists for contact with electricity. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs a. Gaseous matter 0000004921 00000 n 1.Missing and more. _.9u'2G_0 Ue]e"x5|Y 0000421920 00000 n d.Add more outlets. 0000015549 00000 n Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp 0000089142 00000 n Which of these can be used as insulating live-line tools for electrical protection. Electricity becomes hazardous when it takes an unintended path to complete the ________. Select the correct answer and then click DONE. 2.Skin 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: Additionally, the ground prong was missing and there was no GFCI protection. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. 0000018681 00000 n 4. 0000003771 00000 n a. 1 0 obj When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. a.311 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: b. d. No, because an extension cord would not provide enough power. -Voltage= a measure of electrical force. 0000002479 00000 n Select the correct answer and then click DONE. Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. 4. c.Touching the motor 0000003715 00000 n Isolating, Power lines may be located underground. Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. 3.When you are using portable power tools (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Before using the equipment, be sure that the ground wire: 0000004884 00000 n As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Both could have prevented the accident from occuring. trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream 0000002122 00000 n Examples of Equipment That Can Contact Power Lines. endobj c. Inductive objects 0000068035 00000 n 0000427811 00000 n 1. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. 1. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. c.911 OSHA 29 CFR 1910.147 . 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. %%EOF 0000005406 00000 n 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. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. Using a dry wood ladder when the possibility exists for contact with electricity. 0000002403 00000 n Question 2: Which of the following are ways employers must protect their employees on the workplace? 3.Clear 2.Complete d. Match the outlet prongs to the extension cord. 0000001495 00000 n 0000003603 00000 n Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. 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. Look for overhead power lines and buried power line indicators. 0000005050 00000 n c.Three-prong plug )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'. 1476 0 obj <>stream 4.Circuit breakers, When inspecting power tools, look for: When current travels through your body - Definition of electric shock. Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires Supply power for tools or equipment on a long-term basis. 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. Get All Answers to OSHA 30 Construction Final Exam. 0000008392 00000 n -Wood. 0000021516 00000 n If a defective power tool gives you an electric shock, how might your muscles react? Provide a safe path to earth ground for electricity. 0000004274 00000 n c.15 feet 3. Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011.
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