Death is probable. 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 -Voltage= a measure of electrical force. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 2.Complete Quiz: Electrical Hazards. c.The outlet. As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. 1.A source of electrical current to flow. 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. 0000002195 00000 n One hand drill was not grounded, and the other had no safety plate. 3. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. How might this event affect the ability of animals to obtain energy to live? Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. 0000002733 00000 n h|UnH}+i-. 3 0 obj 2.Loose screws 0000001908 00000 n There were no eyewitnesses to the accident, but evidence suggests that while the victim was handling the damaged and energized extension cord, he provided a "path to ground" and was electrocuted. 0000017163 00000 n a.Ground Fault Circuit Insulator The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. BE SAFE! Using a dry wood ladder when the possibility exists for contact with electricity. 2. Lockout/tagout procedures. One handle has a deadman's switch. Question 2: Which of the following are ways . 1. Safe operation of hand and portable powered tools and other hand-held equipment. Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires <> Additionally, the ground prongs were missing from the two cords. 5. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. (B) Switch sticks. Post warning signs. When does electricity become hazardous to humans? 0000420887 00000 n Use only extension cords that are marked with a designation code for hard or extra-hard usage. 0000014257 00000 n startxref 0000004274 00000 n a.Yes, because the electrical shock caused the fall. No GFCI's were used. b. Determine duration, frequency, degree of exposure to hazards and physical stress. You need to evaluate the situation you are in and assess your . True. 1. 0000005042 00000 n x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q vpfuI)],s 3. This is action is also known as creating or completing an electrical circuit. a) Door or window edges Select the correct answer and then click DONE. Which of the following are caused by contact with electricity? [. Electrical current travels through insulated ________. Question 3: A/an ____________ is a unit of measurement for electrical resistance. 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). Equipment used in manner prescribed. 0000006866 00000 n 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. 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 Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. (C) Hot sticks. 0000056642 00000 n a.A small current q>NmnLNmb$"Iyx1bD9.~Ll. 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. 0000003413 00000 n c.A measurement of electricity OSHA 29 CFR 1910, Subpart P . d.50,000 volts. Which of these can be used as insulating live-line tools for electrical protection. -Wood. A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! 0000421920 00000 n Which of the following are conductor of electricity? [Flexible Cords and Power Tools]. Then answer the questions below. 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). 0000003640 00000 n 0000108653 00000 n A. wrap tape around the damaged spot to prevent electrical shocks. 3.Needs to be reset What is the output of the program in Exercise 17, if first = 26 and second = 8? 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. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. He plans to use it over a period of at least six months. A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. 2.Grease Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. <>>> endobj *Effects are for voltages less than about 600 volts. 3. Extension cords had poor splices, no grounds, and reversed polarity. Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l 1.The humidity of the environment -Glass. Ground all exposed metal parts of equipment. d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. When used on the moon? Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. This may damage your equipment and cause employee injuries. 0000003603 00000 n 0000419562 00000 n b.10 feet c.falls. b.A fast-acting switch monitoring current flow 4. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . Select the correct answer and then click DONE. d. Match the outlet prongs to the extension cord. To be safe, you must think about your job and plan for hazards. 2.Loose bolts Yes, because he will be using electricity near water. Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: 2. Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. Select the correct answer and then click DONE. 1.Is faulty 0000002122 00000 n 0000006893 00000 n 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? 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. 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. 5 feet 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. b.Yes, because Bob was on . Extension cords are used to: Contact utilities for buried power line locations. 0000002403 00000 n 0000110659 00000 n 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. Is not painted over The ground wire was not attached on the male end of the cord's plug. Potential hazards of electricity are preventable if you do which of the following listed below? 0000021516 00000 n Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. Select the correct answer and then click DONE. Do not remove ground prongs from cord- and plug-connected equipment or extension cords. Use only cords, connection devices, and fittings that are equipped with strain relief. 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. Additionally, the ground prong was missing and there was no GFCI protection. (3,2,1), (5,4,3). 1. Frames of non-electrically driven elevator cars to which electric conductors are attached. 1476 0 obj <>stream endobj Continually audit cords on-site. Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. D. near other electrical equipment. Dust d. No, because an extension cord would not provide enough power. An employee was texturing a wall using an air compressor. Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 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. 0000017336 00000 n The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. 0000005050 00000 n Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. High humidity Question 1: Which of the following is a danger of electricity? Select the correct answer and then click DONE. 4 0 obj a.related to muscle damage. 0000001116 00000 n 0000011060 00000 n [Power Tools]. It is important to note that NFPA 70E is a . The victim collapsed into the lake and sank 4-1/2 feet to the bottom. Bob is asked to repair some overhead wiring, requiring the use a ladder. 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. Select the correct answer and then click DONE. If a worker has been retaliated against for using their rights, they Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). Provide a safe path to earth ground for electricity. 0000018681 00000 n Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. 4.Flex Select the correct answer and then click DONE. _.9u'2G_0 Ue]e"x5|Y It's okay to use extension cords with worn insulation, as . OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. Switch Use tools and equipment according to the instructions included in their listing, labeling or certification. When current travels through your body - Definition of electric shock. Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. Before using the equipment, be sure that the ground wire: 2.Placed along a wall. 4.Running through doorways. 0000007464 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. The contact lasts for 5 seconds before someone is able to shut off the power. (E) a, b, and c. 2. When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: gYpV:+ 0000005716 00000 n -Current= the movement of electrical charge. [, Use all equipment according to the manufacturer's instructions. Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. lex has set up a mobile engine testing station in the maintenance area. endobj 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. a.Electricity Which of the following can be the result of electric shock? =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR These short objective type questions with answers are very important for competitive exams as well as Board exams. Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. 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. c.Three-prong plug c.15 feet (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) Select the correct answer and then click DONE. Quiz Question 3: Power cords can be damaged by which of the following? The workers had removed their shirts and were sweating. Question 1: Which of these is a type of Ground Fault Circuit Adapter? When an electric shock occurs, your muscles may: a) Ensure overhead power line safety Best Practices with Power Lines 1. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. Select the correct answer and then click DONE. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. Death. 0000009628 00000 n Electrical safety quiz answers are given below. 2. Extension cords may become a trip hazard when: Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. C 277v. RZyd -Conductor= permits the free flow of electricity. [Flexible Cords] Cords that are not 3-wire type, not designed for hard-usage, or that have been modified, increase your risk of contacting electrical current. b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. (A) Shotgun sticks. View Answer Answer: 600v 4 . 0000422244 00000 n 0000055319 00000 n d.Constructive objects, Select all answers that apply to the following statement and then click DONE. 1. 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. Besides personal bodily injury, what other electrical hazards can be found in the workplace? . The ________ keeps the electricity on its intended path through the conductor. 1.Missing (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. 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. Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. 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. Other protective measures include guarding or insulating the lines. De-energize and ground lines when working near them. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ -If current passes through the body near the heart or brain. Electricity becomes hazardous when it takes an unintended path to complete the ________. 3.Something that causes current to flow through the . :$#k9BPnZ{Qqe/reKy,'ZlB# -Damage to internal organs. A 120v. 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. Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. 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: 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. Select the choices that accurately define the common electrical term. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. The auger then fell across the other worker, the 24-year-old victim. D. Have an ANSI sticker and an expiration date. c.911 3. 0000007116 00000 n When inspecting extension cords, look for: Which of the following are insulators of electricity? BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. 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. b.The tool's power cord. b.Yes, as it would be too expensive to install more permanent wiring and receptacles. c) Age 0000427811 00000 n a.Your thumb. 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: a.Two-prong plug 0000010155 00000 n OSHA 10 General Industry Test Answer Key WALKING. d.The body of the power tool. Does the fall qualify as an electrical accident? 3.No, because he will not be touching any grounded material when using the tool. 0000004921 00000 n 1.Missing or broken path to ground. Most of the hydrides of Group 1A and Group 2A metals are ionic. d. Power outlets, ________ are anything that can transmit electrical current. 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. As she is adding in the chemicals, her hand touches the motor and it becomes energized. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. Frequently inspect electrical systems to insure that the path to ground is continuous. 12 months C. 6 months D. Never Q23. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. d. heart attacks. If electrical equipment is used in ways for which it is not designed, you can no longer depend on safety features built in by the manufacturer. OSHA will keep all identities confidential. b.811 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 . 0000024814 00000 n 0000006152 00000 n 2.Is working properly a.Shut off power within a fraction of a second Looking for NFPA 70E Certification? %PDF-1.4 % 0000022637 00000 n 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. b.burns. On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. stream If you are touching any grounded material while using a power tool In which of the following workplace situations are you at risk for coming into contact with live electrical . 0000001604 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+ b.Rod Use only equipment that is approved to meet OSHA standards. How will she choose the correct cord? Is the west coast of Africa a plate boundary? ZR)!=w|; @uT C0? Improper Use of Extension and Flexible Cords. endobj 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. Test your knowledge with our electrical safety quiz below. hazard or that their employer is not following OSHA's rules. Both could have prevented the accident from occuring. She has an older drill with a steel housing and a 3-prong plug. 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 In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. Apparently, his hand contracted and he was "locked" to the saw. (D) None of the above. 0000108920 00000 n 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: b.Ground Fault Critical Interrupter % a.Yes, as it is a mobile engine testing station. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). 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.
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