The victim signaled the operator of the crane to extend the boom and lower the hoist cable. Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. endobj 4. . 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. The source of the shocks -- the saw -- was not replaced. 0000001604 00000 n 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. [, Use all equipment according to the manufacturer's instructions. 0000056642 00000 n Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. endobj Additionally, the ground prongs were missing from the two cords. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. 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. 0000001908 00000 n Freeze 2.Something to transport the electrical current -- A conductor. 5. 0000012944 00000 n c. Extend the reach of the power tool. 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. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. Provides information about the hazards that electrical workers may experience as a part of their jobs. Ground all exposed metal parts of equipment. Question 1: Each year, approximately __________ workers suffer from electricity related injuries. BE SAFE! Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. Easy to identify Continually audit cords on-site. 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. 3.Cramp 3. 0000000016 00000 n It's okay to use extension cords with worn insulation, as . The following are electrical hazards: Shock. He plans to use it over a period of at least six months. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. gYpV:+ 3.Vapor 2. Select the correct answer and then click DONE. 0000004273 00000 n Select the correct answer and then click DONE. Stay at least 10 feet away from overhead power lines. Which of the following can be caused by exposure to an arc flash? 1.A source of electrical current to flow. 0000108653 00000 n <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 2. 0000002195 00000 n Select the correct answer and then click DONE. Electricity becomes hazardous when it takes an unintended path to complete the ________. A. indoors. 2.Using extension cords or electrical tools properly. 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 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. Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. 0000002403 00000 n d.50,000 volts. a.A small current -Wood. Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? Use only equipment that is approved to meet OSHA standards. 0000003640 00000 n 3 0 obj 12 months C. 6 months D. Never Q23. 1. Use only extension cords that are 3-wire type. b.30,000 volts Visually inspect all electrical equipment before use. -Grounding= a conductive connection to the earth which acts as a protective measure. 0000006893 00000 n A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. 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. Visually inspect all electrical equipment before use. 4.Circuit breakers, When inspecting power tools, look for: One hand drill was not grounded, and the other had no safety plate. Identify the oxidizing and reducing agents. The small electrical current enters his body through his left leg. Which of the following are insulators of electricity? Match the length from job to outlet. Most of the hydrides of Group 1A and Group 2A metals are ionic. b.811 trailer q>NmnLNmb$"Iyx1bD9.~Ll. To avoid injury or death, you must understand and recognize hazards. 3. Electricity will form a "path" or "loop". True. Additionally, the ground prong was missing and there was no GFCI protection. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. Unless you know otherwise, assume that overhead lines are energized. Ground all power supply systems, electrical circuits, and electrical equipment. Intentionally creating a low-resistance path that connects to the earth. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. b. Deductive objects The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. Frames of non-electrically driven elevator cars to which electric conductors are attached. One handle has a deadman's switch. Select the correct answer and then click DONE. C 277v. a.Extension cords 3.Tears c.Gasoline Using multi-receptacle boxes designed to be. 3.Loose nuts d.Metal, Over half of all deaths caused by electricity result from contact with ________. Do not remove ground prongs from cord- and plug-connected equipment or extension cords. 0000007694 00000 n Improper Use of Extension and Flexible Cords. 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. a.20,000 volts using a 30-amp breaker in a system with 15- or 20-amp receptacles. 0000005520 00000 n She has an older drill with a steel housing and a 3-prong plug. OSHA 29 CFR 1910, Subpart P . Post warning signs. If a worker has been retaliated against for using their rights, they Question 2: Which of the following is NOT a category of electrical burns? As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. 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. %%EOF When does electricity become hazardous to humans? 0000427811 00000 n 0000005042 00000 n 0000068035 00000 n Select the choices that accurately define the common electrical term. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. Select the correct answer and then click DONE. -Severe skin burns. c. Match the color of the tool to the color of the extension cord. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. c. No, because the electricity is needed on a long-term basis. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. 0000006866 00000 n xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t (3,2,1), (5,4,3). (b) The same reaction can also be classified as a redox reaction. Using cords or tools with worn insulation or exposed wires. _.9u'2G_0 Ue]e"x5|Y d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. b.Rod 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: OSHA 10 General Industry Test Answer Key WALKING. 0000420887 00000 n Explosion gYpV:+ Using a dry wood ladder when the possibility exists for contact with electricity. 0000004884 00000 n xYmo -ER/&@[D,_! Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? % Besides personal bodily injury, what other electrical hazards can be found in the workplace? a. Gaseous matter Protection is lost because it will not trip when the system's load has been exceeded. c.A measurement of electricity 0000003254 00000 n 0000003900 00000 n 0000005716 00000 n 1. xref d. heart attacks. OSHA will keep all identities confidential. Use only extension cords that are marked with a designation code for hard or extra-hard usage. You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. d) All of the above. 1. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. Electrocution. 3.No, because he will not be touching any grounded material when using the tool. 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. What type of burns are the result of current flowing through and exiting the body? 0000002479 00000 n 2. 0000420564 00000 n 0000004444 00000 n c.The outlet. Electrical Safety Multiple Choice Questions and Answers for competitive exams. Use non-conductive wood or fiberglass ladders when working near power lines. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. :$#k9BPnZ{Qqe/reKy,'ZlB# Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. Potential hazards of electricity are preventable if you do which of the following listed below? This caused him to fall from the ladder and land in a puddle of water, still holding the saw. 1.Is firmly connected 1.When you are using electricity near water Lockout/tagout procedures. -If current passes through the body near the heart or brain. Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. 0000004208 00000 n Extension cords may become a trip hazard when: Which of the following are insulators of electricity? D. near other electrical equipment. 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. 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. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. Question 1: Which of the following is a danger of electricity? 0000004274 00000 n d.Water, Other electrical hazards in the workplace include: Get All Answers to OSHA 30 Construction Final Exam. 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. endobj OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. Take any defective equipment out of service. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. A measure of the energy of motion of the particles in a substance is its _____. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. 0000004946 00000 n 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. OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 3.Draped over equipment. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. (E) a, b, and c. 2. Additional minimum clearance distance is required for power lines carrying over ________. Draw a line from the item on the left that corresponds to the match on the right. View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 0000002557 00000 n As she is adding in the chemicals, her hand touches the motor and it becomes energized. 2. c.Touching the motor What is the minimum clearance distance you must maintain from the power lines? Isolating, Power lines may be located underground. 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. [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.Yes, as it would be too expensive to install more permanent wiring and receptacles. Select the correct answer and then click DONE. (D) None of the above. You should? c.Guaranteed Fault Circuit Interrupter 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. 0000011060 00000 n a.Shut off power within a fraction of a second (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. *Effects are for voltages less than about 600 volts. -Voltage= a measure of electrical force. d.Adapter, What is a GFCI? Overview. 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. D 600v. On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. Work performed on an electrical system within reaching distance of energized components is_____work. Examples Of Electrical Hazards. 0000001495 00000 n Which of the following factors determine how severe an electrical injury might be? )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'. 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. %PDF-1.4 % Select the correct answer and then click DONE. 1.Clench 0000009628 00000 n d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? Latoya is using a mixing motor to mix pool chemicals in a plastic drum. 0000001731 00000 n 1.Missing or broken path to ground. 0000002385 00000 n OSHA Safety and Health Topics Page. 3.Clear 0000010155 00000 n RZyd [, Do not modify cords or use them incorrectly. 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. 1. b.Not wearing insulating shoes or boots when she was handling electrical equipment D. Have an ANSI sticker and an expiration date. [Flexible Cords and Power Tools]. 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. De-energize and ground lines when working near them. 2.The person's physical condition I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB A) 120v . d.Add more outlets. 0000110659 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. 2.Flooding The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. 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: %PDF-1.5 Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? A. wrap tape around the damaged spot to prevent electrical shocks. 0 0000017163 00000 n Check your employee's electrical safety knowledge through an electrical safety quiz. Which of the following are conductor of electricity? 4.The amount of current, An electrical burn may affect: 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. Draw a line from the item on the left that corresponds to the match on the right. 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. Hand-operated metal shifting ropes or cables of electric elevators. % 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? The workers administered CPR to the victim, but to no avail. Electrical current travels through insulated ________. 0000420277 00000 n b.burns. 0000008392 00000 n 0000001672 00000 n 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. Provide a safe path to earth ground for electricity. d. No, because an extension cord would not provide enough power. 3. Which of the following part of you body can burn if you come in contact with electricity? 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). After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. b) Staples endobj B 208v. a.Yes, as it is a mobile engine testing station. stream 3.Something that causes current to flow through the . The auger then fell across the other worker, the 24-year-old victim. . 3. 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+ Water 0000014257 00000 n These short objective type questions with answers are very important for competitive exams as well as Board exams. If you are touching any grounded material while using a power tool a) Ensure overhead power line safety Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. A) Identify; Castigate; C) Evaluate; D) Modify; 3. 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. 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? It is important to note that NFPA 70E is a . Should Ajay use a GFCI? 30 days B. 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). A co-worker disconnected the power cord to the saw, too late to save the victim. Determine duration, frequency, degree of exposure to hazards and physical stress. 1.Damaged cover or insulation Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. 0000004793 00000 n 2 0 obj d.Constructive objects, Select all answers that apply to the following statement and then click DONE. 0000003603 00000 n c.Wood Explosion. 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. Of the following choices, which are frequent electrical hazards The accident site was wet; also, humidity was high and the victim was sweating. 0000419562 00000 n s\A0W+ (B) Switch sticks. 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. 4.No, because he does not need to use an extension cord. -Glass. Safe operation of hand and portable powered tools and other hand-held equipment. Quiz: Electrical Hazards. 0000007464 00000 n 4. [. and more. 0000013716 00000 n A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. 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. BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. 3.Body tissue lex has set up a mobile engine testing station in the maintenance area. Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. stream 0000005734 00000 n The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. Does the fall qualify as an electrical accident? The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). Electrical safety quiz answers are given below. 2. 0000004965 00000 n When inspecting extension cords, look for: Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. 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 Does the fall qualify as an electrical accident? 0000002733 00000 n 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. Quiz Question 3: Power cords can be damaged by which of the following? Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires 1.Flammable liquids 4,600. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. b. Ajay needs to use a dewatering pump to drain standing water on a construction site. 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: b.A fast-acting switch monitoring current flow 1. 0000012360 00000 n ( Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. Use tools and equipment according to the instructions included in their listing, labeling or certification. 0000001814 00000 n 3 0 obj 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 Is split 0000001861 00000 n The following references aid in recognizing hazards associated with electrical work. 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: No GFCI's were used. 0000055319 00000 n b.Electrical tools a.Supply power for tools or equipment on a temporary or short-term basis. b+t6W' te+.W_{8u7Dt@1c. 4.Broken. Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. Select the correct answer and then click on DONE. 1476 0 obj <>stream 0000001116 00000 n What was Latoya's first mistake? Muscular contraction and nerve damage occur; death likely. 3.ack of ground fault protection. 2.Complete The ground wire was not attached on the male end of the cord's plug. Outlets b. Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. lb MKS OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. Is not painted over Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. b) By supplying GFCIs, or ground-fault circuit interrupters What is the primary purpose of properly grounding equipment? Before using the equipment, be sure that the ground wire: a.Standing in water 0000000816 00000 n 4. c.40,000 volts Damaged Extension Cord Leaves Arc Welder Ungrounded: A 29-year-old welder attempted to connect a portable arc welder to an electrical outlet using an extension cord. Then answer the questions below.