0000056642 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. Which of the following are insulators of electricity? 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. 0000005406 00000 n 3.Clear b.10 feet <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 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). No GFCI's were used. 1.Damaged cover or insulation Intentionally creating a low-resistance path that connects to the earth. endobj How fast would the ball be moving at the moment of release? Use only extension cords that are marked with a designation code for hard or extra-hard usage. 0000003715 00000 n Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. 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. 3.Tears 0000007116 00000 n Additional minimum clearance distance is required for power lines carrying over ________. Select the choices that accurately define the common electrical term. C. near water. Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. Dust 2.Grease 0000003413 00000 n Frequently inspect electrical systems to insure that the path to ground is continuous. 0000005042 00000 n 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). Which of the following are insulators of electricity? b) Staples (A) Shotgun sticks. 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and Question 4: Which of the following is a type of burn caused by electrical hazards? Select the choices that accurately define the common electrical term. 0000005050 00000 n Ground all power supply systems, electrical circuits, and electrical equipment. The victim was part of a crew that was constructing a concrete wall. Get All Answers to OSHA 30 Construction Final Exam. Electrical safety quiz answers are given below. ZR)!=w|; @uT C0? 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. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. Bob is asked to repair some overhead wiring, requiring the use a ladder. Water OSHA 10 General Industry Test Answer Key WALKING. 0000013716 00000 n 0000004884 00000 n Improper Use of Extension and Flexible Cords. 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. Electrical Hazards Electrical hazards can be found in nearly every roofing work site. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. 0000004921 00000 n Provides information about the hazards that electrical workers may experience as a part of their jobs. Use only extension cords that are 3-wire type. 0000002195 00000 n d. Match the outlet prongs to the extension cord. 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. 3.Loose nuts a.Extension cords Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? 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. 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+ a.Your thumb. %PDF-1.4 % 0000002122 00000 n a.Standing in water 0000110659 00000 n a.Conductive objects 1452 0 obj <> endobj Determine duration, frequency, degree of exposure to hazards and physical stress. Use only cords, connection devices, and fittings that are equipped with strain relief. Fire 0000000816 00000 n Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) 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. Is split a.A small current Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. Wearing a baseball cap 3.No, because he will not be touching any grounded material when using the tool. _.9u'2G_0 Ue]e"x5|Y What is the output of the program in Exercise 17, if first = 26 and second = 8? Both could have prevented the accident from occuring. 0000419562 00000 n The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. a.Electricity Does the fall qualify as an electrical accident? Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? Electrical current travels through insulated ________. 2. Using tools and equipment that can contact power lines increases the risk. a) Door or window edges -Wood. [, Do not modify cords or use them incorrectly. 3.Loss of eyesight A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. 0000017336 00000 n Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. b. c. No, because the electricity is needed on a long-term basis. How will she choose the correct cord? d. No, because an extension cord would not provide enough power. 0000028595 00000 n The modification of the plug was not an intended use or prescribed by the manufacturer. Ground all exposed metal parts of equipment. 2.Placed along a wall. Ajay needs to use a dewatering pump to drain standing water on a construction site. The workers administered CPR to the victim, but to no avail. Question 2: Which of the following are ways . Select the correct answer and then click DONE. c.Touching the motor Used across walkways. 4 0 obj 1. 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). 2.Complete 0000001814 00000 n gYpV:+ g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream 0000002403 00000 n Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. (D) None of the above. 0000014257 00000 n Outlets 4.Broken. True. 1. <> . 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.Wood De-energize and ground lines when working near them. b.811 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 0000421627 00000 n 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. What type of burns are the result of current flowing through and exiting the body? 182 0 obj <> endobj xref 182 41 0000000016 00000 n [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. When it completes a circuit through the body. Use non-conductive wood or fiberglass ladders when working near power lines. Select the correct answer and then click DONE. d. Power outlets, ________ are anything that can transmit electrical current. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB 0000004946 00000 n View Answer Answer: 600v 4 . Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. 0000018681 00000 n Lx*jWP# /c2)|]NXqAx>=~'[ As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. 0000004686 00000 n 0000420277 00000 n 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) 0000001731 00000 n Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? d. 20 feet. 2.Grounding As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 1. stream Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. 4,600. A co-worker disconnected the power cord to the saw, too late to save the victim. Most of the hydrides of Group 1A and Group 2A metals are ionic. . endobj 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. <<7628BB2D46738F42B2FC6393656F4718>]>> hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l 0000003254 00000 n 2. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. a. 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 Switch Regarding hand protection employers should: A. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. Quiz Question 7: Which is not an insulator? a.Two-prong plug In which of the following workplace situations are you at risk for coming into contact with live 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. What do tripped circuit breakers and blown fuses indicate? 1.Is firmly connected What was Latoya's first mistake? 0000001672 00000 n 1.Using a fiberglass ladder when the possibility exists for contact with electricity. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. 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. 0000003771 00000 n Explosion 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: 0000057373 00000 n Freeze hazard or that their employer is not following OSHA's rules. a.Ground Fault Circuit Insulator 3.Cramp (See NFPA 70E-2021 Article 130 and OSHA subpart S part . vpfuI)],s 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. 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. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. 4. Yes, because he will be using electricity near water. A measure of the energy of motion of the particles in a substance is its _____. 0000422244 00000 n %PDF-1.4 % 3.Vapor High humidity 0000006893 00000 n Select the correct answer and then click DONE. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Select the correct answer and then click DONE. OSHA 29 CFR 1910, Subpart P . Use only equipment that is approved to meet OSHA standards. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. 4.Circuit breakers, When inspecting power tools, look for: 128 0 obj <> endobj xref 128 26 0000000016 00000 n 0000005716 00000 n Frames of non-electrically driven elevator cars to which electric conductors are attached. Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. 0000003603 00000 n Safe operation of hand and portable powered tools and other hand-held equipment. 1.Fingernails What is the most common, non-fatal, electrical shock-related injury? 0000108653 00000 n <>>> [Flexible Cords and Power Tools]. Select the correct answer and then click DONE. 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. A) 120v . Does the fall qualify as an electrical accident? 0000011060 00000 n Select the correct answer and then click DONE. -If current passes through the body near the heart or brain. One handle has a deadman's switch. c.40,000 volts h|UnH}+i-. 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 used on the moon? An employee was texturing a wall using an air compressor. Be sure equipment that has been shop fabricated or altered is in compliance. She has an older drill with a steel housing and a 3-prong plug. The most dangerous place to use electrical equipment is? 4.Running through doorways. If you are touching any grounded material while using a power tool 0000420564 00000 n a.Yes, as it is a mobile engine testing station. 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. [. (b) The same reaction can also be classified as a redox reaction. 1. 0000001908 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. 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. You should? He may have dropped the extension cord at the site and not heard the connector break. 0000006866 00000 n -Current= the movement of electrical charge. xYmo -ER/&@[D,_! Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. Select the correct answer and then click DONE. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. c) Age 3.Needs to be reset OSHA 29 CFR 1910.147 . H. Other protective measures include guarding or insulating the lines. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . -Voltage= a measure of electrical force. The following are electrical hazards: Shock. Hand-operated metal shifting ropes or cables of electric elevators. 0 What factors determine the severity of Dirk's injuries? 0000414648 00000 n The source of the shocks -- the saw -- was not replaced. c.15 feet qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? Death. 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.