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. 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. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. d. Power outlets, ________ are anything that can transmit electrical current. Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. 5 feet s\A0W+ These short objective type questions with answers are very important for competitive exams as well as Board exams. a.Conductive objects c.911 You need to evaluate the situation you are in and assess your . Bob is asked to repair some overhead wiring, requiring the use a ladder. :$#k9BPnZ{Qqe/reKy,'ZlB# C 277v. 3.Loss of eyesight 0000003413 00000 n c.Gasoline One hand drill was not grounded, and the other had no safety plate. Short In Power Saw/Ungrounded Temporary Power Supply: On July 10, 1986, a 22-year-old carpenter was working at the construction site of large apartment complex, using a portable electric saw to construct the wooden framework of a laundry building. Be sure equipment that has been shop fabricated or altered is in compliance. 1.Fingernails endobj 0000004965 00000 n 2.Loose bolts 0000003771 00000 n % Draw a line from the item on the left that corresponds to the match on the right. 0000003640 00000 n Whether the hazard is posed by worn or damaged power tools or cords, improperly grounded tools or equipment, or the presence of standing water, it is the responsibility of the contractor to make sure the tools and equipment Some of the causes of these are live wire s that may be lying around, overloaded circuits, explosions that are caused by flammable objects, etc. HJ=S~68438IR/:VR C Y<7H*$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 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. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. The floor is covered in water and she is barefoot. 0000007116 00000 n A) 120v . When an electric shock occurs, your muscles may: Of the following choices, which are frequent electrical hazards 0000004946 00000 n After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. 1 0 obj 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 4. 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. Question 4: Which of the following is a type of burn caused by electrical hazards? Fire stream <>>> 0000002557 00000 n OSHA 29 CFR 1910, Subpart S . 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. Is the west coast of Africa a plate boundary? Question 1: Which of these is a type of Ground Fault Circuit Adapter? Select the correct answer and then click DONE. Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. OSHA will keep all identities confidential. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. Electrical Contractors Industry. 1.A source of electrical current to flow. a.A small current Additionally, the ground prongs were missing from the two cords. Isolating, Power lines may be located underground. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Select the correct answer and then click DONE. 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). -Rubber. Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? What was Latoya's first mistake? One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. Should he use an extension cord to power it? D. near other electrical equipment. The ________ keeps the electricity on its intended path through the conductor. Use only extension cords that are 3-wire type. 1.When you are using electricity near water |tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s Computers It is important to note that NFPA 70E is a . As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. ZR)!=w|; @uT C0? 0000007694 00000 n _.9u'2G_0 Ue]e"x5|Y using a 30-amp breaker in a system with 15- or 20-amp receptacles. b.811 Use only extension cords that are marked with a designation code for hard or extra-hard usage. Is not painted over Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) In addition to contact with power lines, the top electrical hazards include: %PDF-1.4 % 2.Yes, because he is using a portable power tool. Additional minimum clearance distance is required for power lines carrying over ________. 0000014257 00000 n Is split b.10 feet BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. d.50,000 volts. 0000001646 00000 n 0000000016 00000 n 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. 0000017163 00000 n 0000001604 00000 n Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. (C) Hot sticks. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . 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. Regarding hand protection employers should: A. !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. Safe operation of hand and portable powered tools and other hand-held equipment. q>NmnLNmb$"Iyx1bD9.~Ll. 0000005406 00000 n 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: Using a dry wood ladder when the possibility exists for contact with electricity. [. Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. The source of the shocks -- the saw -- was not replaced. gYpV:+ When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. Select the correct answer and then click DONE. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. d.Water, Other electrical hazards in the workplace include: 1452 25 0000057373 00000 n d.Constructive objects, Select all answers that apply to the following statement and then click DONE. How will she choose the correct cord? 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. HWMo#7v#h>6,Z4- c) Age 0000002876 00000 n He yelled for his co-workers to disconnect the power, which they did. Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream Quiz Question 1: Which of the following is not a category of electrical burns? 0000002195 00000 n lex has set up a mobile engine testing station in the maintenance area. 1.Is faulty 1. Select the correct answer and then click DONE. 2. 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. 3. You should? Should Ajay use a GFCI? 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. =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR Which of the following are caused by contact with electricity? 2.Is working properly 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. What is the most common, non-fatal, electrical shock-related injury? d.Metal, Over half of all deaths caused by electricity result from contact with ________. Work performed on an electrical system within reaching distance of energized components is_____work. Question 2: Which of the following is NOT a category of electrical burns? The victim was totally deaf in one ear and suffered diminished hearing in the other. 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? endobj Which of the following are insulators of electricity? c.falls. Lx*jWP# /c2)|]NXqAx>=~'[ endobj Visually inspect all electrical equipment before use. This may damage your equipment and cause employee injuries. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. 3.Vapor 2. b.Electrical tools 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 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. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: 0000010155 00000 n a.Electricity 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. c.Three-prong plug Extension cords may become a trip hazard when: Remove cords from receptacles by pulling on the plugs, not the cords. h|UnH}+i-. [, Use all equipment according to the manufacturer's instructions. A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. Select the correct answer and then click DONE. 4.Cardiac arrest 3.ack of ground fault protection. 2.Using extension cords or electrical tools properly. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. Test your knowledge with our electrical safety quiz below. 2. Continually audit cords on-site. (B) Switch sticks. 4. xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. Stay at least 10 feet away from overhead power lines. (E) a, b, and c. 2. Question 1: Which of the following is a danger of electricity? <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> The small electrical current enters his body through his left leg. 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 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! 0000004208 00000 n vpfuI)],s 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. He may have dropped the extension cord at the site and not heard the connector break. 0000028595 00000 n Examples Of Electrical Hazards. The accident site was wet; also, humidity was high and the victim was sweating. Frequently inspect electrical systems to insure that the path to ground is continuous. 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. Besides personal bodily injury, what other electrical hazards can be found in the workplace? Select the correct answer and then click DONE. Question 3: A/an ____________ is a unit of measurement for electrical resistance. Muscular contraction and nerve damage occur; death likely. lb MKS b.30,000 volts c.Guaranteed Fault Circuit Interrupter Cardiac arrest or death - A result of electrical shock. Used across walkways. Quiz: Electrical Hazards. a.Supply power for tools or equipment on a temporary or short-term basis. Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. Ajay needs to use a dewatering pump to drain standing water on a construction site. 4 0 obj The workers administered CPR to the victim, but to no avail. If you are touching any grounded material while using a power tool 0000002733 00000 n The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. 3.When you are using portable power tools I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB When inspecting extension cords, look for: Select the correct answer and then click DONE. Electrical safety quiz answers are given below. 3 0 obj OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and %PDF-1.5 Check your employee's electrical safety knowledge through an electrical safety quiz. gYpV:+ Electricity becomes hazardous when it takes an unintended path to complete the ________. 0000015549 00000 n Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. endobj Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l Death is probable. 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.