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). The victim signaled the operator of the crane to extend the boom and lower the hoist cable. Question 4: Which of the following is a type of burn caused by electrical hazards? D 600v. 0000004946 00000 n b.Electrical tools Hand-operated metal shifting ropes or cables of electric elevators. d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs Then answer the questions below. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. Be sure equipment that has been shop fabricated or altered is in compliance. 0000002733 00000 n Computers Look for overhead power lines and buried power line indicators. % Arc Flash. 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. What type of burns are the result of current flowing through and exiting the body? Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. 1.Damaged cover or insulation The workers administered CPR to the victim, but to no avail. 0000419562 00000 n The accident site was wet; also, humidity was high and the victim was sweating. Most of the hydrides of Group 1A and Group 2A metals are ionic. 0000005520 00000 n 0000005042 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. Supply power for tools or equipment on a long-term basis. The ground wire was not attached on the male end of the cord's plug. SCENARIO: You encounter a co-worker on a residential remodeling job. c.Guaranteed Fault Circuit Interrupter 0000421627 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. The victim was totally deaf in one ear and suffered diminished hearing in the other. B. outdoors. The contact lasts for 5 seconds before someone is able to shut off the power. Safe operation of hand and portable powered tools and other hand-held equipment. [29 CFR 1926.416(a)(1)]. 128 0 obj <> endobj xref 128 26 0000000016 00000 n Question 2: Which of the following is NOT a category of electrical burns? 0000008392 00000 n trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream 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. Which group would be more accurate when used in an accelerating spaceship? Continually audit cords on-site. 0000001116 00000 n 3. endobj 4 0 obj The laborer, who was wearing leather gloves, received an electric shock and dropped the wire reinforcement, which fell across the power line and simultaneously contacted the metal rail of the scaffold, energizing the entire scaffold. D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. 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. c.falls. 3. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. Select the correct answer and then click DONE. Select the correct answer and then click DONE. If a defective power tool gives you an electric shock, how might your muscles react? (See NFPA 70E-2021 Article 130 and OSHA subpart S part . (B) Switch sticks. 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? 1.Is firmly connected 0000004884 00000 n startxref q>NmnLNmb$"Iyx1bD9.~Ll. When used on the moon? Easy to identify 0000028595 00000 n The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. 1.The humidity of the environment 0000001731 00000 n Looking for NFPA 70E Certification? 0000006893 00000 n Should Ajay use a GFCI? . Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. 0000001814 00000 n Additional minimum clearance distance is required for power lines carrying over ________. 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. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. a.Supply power for tools or equipment on a temporary or short-term basis. b+t6W' te+.W_{8u7Dt@1c. -Damage to internal organs. 3.Loose nuts 2. Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires (C) Hot sticks. She finds several available in the shop. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. Both could have prevented the accident from occuring. -Conductor= permits the free flow of electricity. b.A fast-acting switch monitoring current flow 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. Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. stream (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) 0000013999 00000 n 1 0 obj 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+ Which of the following are conductor of electricity? <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 4.No, because he does not need to use an extension cord. Select the correct answer and then click DONE. 4. 3.When you are using portable power tools b.Rod a.Two-prong plug endobj B. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 2.Loose bolts Select the correct answer and then click on DONE. %PDF-1.5 30 days B. HWMo#7v#h>6,Z4- b.Not wearing insulating shoes or boots when she was handling electrical equipment Explosion. You should? Cardiac arrest or death - A result of electrical shock. The workers had removed their shirts and were sweating. 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. 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. B 208v. Select the correct answer and then click DONE. 1.A source of electrical current to flow. RZyd Question 2: Which of the following are ways . 5 feet 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. The small electrical current enters his body through his left leg. he most common shock-related injuries are: <> b.10 feet 0000006866 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. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB 0000007464 00000 n 1.Clench Do not remove ground prongs from cord- and plug-connected equipment or extension cords. 0000003715 00000 n Quiz Question 3: Power cords can be damaged by which of the following? Underground electrical hazards are: A. Draw a line from the item on the left that corresponds to the match on the right. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Burns. a.Ground Fault Circuit Insulator If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. -Wood. 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. <> The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. d.Alert workers of any water in the area, GFCI is an acronym for: The factors that determine the severity of an electrical injury include: b) Staples Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? Select the correct answer and then click DONE. a.311 2.Loose screws a.related to muscle damage. 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 The source of the shocks -- the saw -- was not replaced. 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t 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. Effective means of controlling power line hazards include: You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. %PDF-1.4 % Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . Which of the following factors determine how severe an electrical injury might be? d. Power outlets, ________ are anything that can transmit electrical current. Potential hazards of electricity are preventable if you do which of the following listed below? OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. Question 3: A/an ____________ is a unit of measurement for electrical resistance. 4.Cardiac arrest c. Extend the reach of the power tool. Dust The NEC C. Suggestions b.burns. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. Using a dry wood ladder when the possibility exists for contact with electricity. Protection is lost because it will not trip when the system's load has been exceeded. Use only extension cords that are marked with a designation code for hard or extra-hard usage. 3.Needs to be reset While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. 0000003771 00000 n 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. DHPP0MHLHIPPXc f2LXL"dgJ:@ ys`llr-shH,Y@Z 23J0a_TXD;X,;&0i,i&f&T8h R/ v`,l. 440!2D9482q={LPXs +( endstream endobj 129 0 obj <> endobj 130 0 obj <> endobj 131 0 obj <>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageB]/ExtGState<>>> endobj 132 0 obj <> endobj 133 0 obj <> endobj 134 0 obj <> endobj 135 0 obj <>stream A. indoors. ( 0000002385 00000 n To be safe, you must think about your job and plan for hazards. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? Which of the following are caused by contact with electricity? In addition to contact with power lines, the top electrical hazards include: 3.Body tissue OSHA will keep all identities confidential. <>>> Is split 2. Ground all power supply systems, electrical circuits, and electrical equipment. It's okay to use extension cords with worn insulation, as . Is the west coast of Africa a plate boundary? The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. b.Shut off power within five minutes of the imbalance [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. 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. 1. Select the correct answer and then click DONE. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. %PDF-1.5 Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. Overview. 4.Broken. 0000420564 00000 n Frequently inspect electrical systems to insure that the path to ground is continuous. Lockout/tagout procedures. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. The following are electrical hazards: Shock. De-energize and ground lines when working near them. 0000002876 00000 n Electrical Safety Multiple Choice Questions and Answers for competitive exams. 0000002403 00000 n b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. Provide a safe path to earth ground for electricity. Select the correct answer and then click DONE. Apparently, his hand contracted and he was "locked" to the saw. The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. The auger then fell across the other worker, the 24-year-old victim. What is the most common, non-fatal, electrical shock-related injury? 2. Switch 0000010603 00000 n 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. BE SAFE! c.A measurement of electricity c.Power lines 0000001861 00000 n 2.Skin Select the correct answer and then click DONE. Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. [Power Tools]. d. 20 feet. 3.Draped over equipment. Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 1.Missing or broken path to ground. 0000007116 00000 n Which of the following are insulators of electricity? 4.Circuit breakers, When inspecting power tools, look for: 0000012944 00000 n As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. d.Adapter, What is a GFCI? Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. 3 0 obj 0000421920 00000 n trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. 0000021516 00000 n Electrical Hazards Electrical hazards can be found in nearly every roofing work site. c) Age 0000012360 00000 n D. Have an ANSI sticker and an expiration date. Best practices with power lines include: Wearing a baseball cap Does the fall qualify as an electrical accident? Outlets Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. endobj c) Establish and enact an assured equipment grounding conductor program (AEGCP) 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. Using tools and equipment that can contact power lines increases the risk. 0000015549 00000 n Co-workers provided CPR, but were unable to revive the victim. He plans to use it over a period of at least six months. Working with electricity can be dangerous. Use non-conductive wood or fiberglass ladders when working near power lines. 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. Draw a line from the item on the left that corresponds to the match on the right. 5. 0000000816 00000 n 0000002195 00000 n To avoid injury or death, you must understand and recognize hazards. The source of the electricity was apparently a short in a receptacle, but examination revealed that the electrical equipment used by the contractor was in such poor condition that it was impossible to make a certain determination of the source of the short. 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. 0000024814 00000 n b. High humidity c. Inductive objects 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. Using multi-receptacle boxes designed to be. 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. Which of the following can be caused by exposure to an arc flash? OSHA 29 CFR 1910, Subpart S . The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. 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. 0000022637 00000 n OSHA requires the testing of a volt meter after a voltage test on voltage above_____. Before using the equipment, be sure that the ground wire: b. Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. d. heart attacks. d.Add more outlets. 1.Flammable liquids 1. Question 1: Which of the following is a danger of electricity? A 120v. Is not broken, Question Text: Electrical tools should be grounded with a(n)________. d.A power tool, A GFCI is designed to: C 277v. 0000003254 00000 n 0000003900 00000 n Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. A measure of the energy of motion of the particles in a substance is its _____. In which of the following workplace situations are you at risk for coming into contact with live electrical . 0000003603 00000 n endobj 0000414648 00000 n d.50,000 volts. 1476 0 obj <>stream 0000002150 00000 n 1.Using a fiberglass ladder when the possibility exists for contact with electricity. 0000004921 00000 n Determine duration, frequency, degree of exposure to hazards and physical stress. 0000108653 00000 n 0000004208 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. [. Which of the following part of you body can burn if you come in contact with electricity? Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. <<7628BB2D46738F42B2FC6393656F4718>]>> 0000011060 00000 n 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: 1452 0 obj <> endobj 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. Regarding hand protection employers should: A. 1.Is faulty % 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. a) Ensure overhead power line safety 0000001896 00000 n Quiz Question 7: Which is not an insulator? Intentionally creating a low-resistance path that connects to the earth. 2.Grease Select the correct answer and then click DONE. What three things must be present for a current to flow through a conductor. endobj 0000004273 00000 n OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. 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. Examples Of Electrical Hazards. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. Freeze 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! He yelled for his co-workers to disconnect the power, which they did. The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. xref 0000007694 00000 n Unless you know otherwise, assume that overhead lines are energized. Fire specifically addresses electrical protective devices. a.Yes, as it is a mobile engine testing station. The following references aid in recognizing hazards associated with electrical work. Ajay needs to use a dewatering pump to drain standing water on a construction site. BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. *Effects are for voltages less than about 600 volts. 4. Select the choices that accurately define the common electrical term. 0000420277 00000 n Extension cords may become a trip hazard when: 0000001495 00000 n ZR)!=w|; @uT C0? 4. 0000056642 00000 n Explosion He may have dropped the extension cord at the site and not heard the connector break. h|UnH}+i-. 1. d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. Use tools and equipment according to the instructions included in their listing, labeling or certification. It is important to note that NFPA 70E is a . b.Yes, because Bob was on . As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. 0000007741 00000 n View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: Frames of non-electrically driven elevator cars to which electric conductors are attached. Ground all exposed metal parts of equipment. The most dangerous place to use electrical equipment is? Quiz: Electrical Hazards. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. b.811 0000000816 00000 n 1.Fingernails 3.Cramp Get All Answers to OSHA 30 Construction Final Exam. Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. 0000010155 00000 n hazard or that their employer is not following OSHA's rules. Select the correct answer and then click DONE. -Glass. A) 120v . 0000055319 00000 n True. Select the choices that accurately define the common electrical term. 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. Post warning signs. 0000013716 00000 n a.Yes, because the electrical shock caused the fall. Death. These short objective type questions with answers are very important for competitive exams as well as Board exams. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. Bob is asked to repair some overhead wiring, requiring the use a ladder. a.Shut off power within a fraction of a second b.Yes, as it would be too expensive to install more permanent wiring and receptacles. a.Extension cords Identify the oxidizing and reducing agents. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. 2. _.9u'2G_0 Ue]e"x5|Y 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. =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR 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. d.Water, Other electrical hazards in the workplace include: Suppose a volcano threw so much ash into the air that it blocked much of the sunlight.