What is the most common, non-fatal, electrical shock-related injury? 128 0 obj <> endobj xref 128 26 0000000016 00000 n OSHA 29 CFR 1910, Subpart P . I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB 0000004274 00000 n 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. De-energize and ground lines when working near them. Select the correct answer and then click DONE. Computers 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 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. Equipment used in manner prescribed. Which of the following are insulators of electricity? 3.Vapor While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. 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. 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. qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? 3 0 obj A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. <>>> 1.Flammable liquids Effective means of controlling power line hazards include: You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. Most of the hydrides of Group 1A and Group 2A metals are ionic. 0000420564 00000 n 0000005520 00000 n a) Door or window edges The contact lasts for 5 seconds before someone is able to shut off the power. 0000001908 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. 0000005734 00000 n 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. 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. 1.Extension cords 2.Placed along a wall. A. indoors. Question 2: Which of the following are ways employers must protect their employees on the workplace? 2.The person's physical condition 0000004793 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. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. 0000024814 00000 n 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. 3. endobj a.311 Remove cords from receptacles by pulling on the plugs, not the cords. d.50,000 volts. RZyd 0000007427 00000 n (See NFPA 70E-2021 Article 130 and OSHA subpart S part . a. 1. Which of the following can be the result of electric shock? If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. 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. When does electricity become hazardous to humans? 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. stream Electric current cannot exist without an unbroken path to and from the conductor. Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). Apparently, his hand contracted and he was "locked" to the saw. 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. g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream 3.Something that causes current to flow through the . xYmo -ER/&@[D,_! Quiz Question 9: Conductor insulation must be approved for the ___________ of use? B. Which group would be more accurate when used in an accelerating spaceship? 1. 182 0 obj <> endobj xref 182 41 0000000016 00000 n 4,600. Provides information about the hazards that electrical workers may experience as a part of their jobs. -Severe skin burns. The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. 1. 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. d.Metal, Over half of all deaths caused by electricity result from contact with ________. View Answer Answer: 600v 4 . 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. 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. 2.Complete 0000421920 00000 n c.Gasoline 0000001672 00000 n lb MKS Select the correct answer and then click DONE. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ 1.Is faulty Used across walkways. How will she choose the correct cord? endobj 0000420277 00000 n Use only extension cords that are 3-wire type. The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. 0000001646 00000 n 3. Before using the equipment, be sure that the ground wire: and more. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: Select the correct answer and then click DONE. Electricity will form a "path" or "loop". a. Gaseous matter 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 . 1.Using a fiberglass ladder when the possibility exists for contact with electricity. 3. Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. d.Adapter, What is a GFCI? Match the length from job to outlet. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) d.Water, Other electrical hazards in the workplace include: 2.Is working properly b.Yes, as it would be too expensive to install more permanent wiring and receptacles. 2.Grounding endobj The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. 0000013999 00000 n OSHA will keep all identities confidential. 2.Something to transport the electrical current -- A conductor. Question 2: Which of the following is NOT a category of electrical burns? 2.Loose screws Lockout/tagout procedures. Besides personal bodily injury, what other electrical hazards can be found in the workplace? c. Extend the reach of the power tool. 0000004444 00000 n d.Constructive objects, Select all answers that apply to the following statement and then click DONE. startxref b. 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. Ground all exposed metal parts of equipment. Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. 4. 1. 5. 0000022637 00000 n 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp 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. 0000010603 00000 n This caused him to fall from the ladder and land in a puddle of water, still holding the saw. lex has set up a mobile engine testing station in the maintenance area. Select the correct answer and then click on DONE. 0000007694 00000 n The victim provided a path to ground and was electrocuted. A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. Is not broken, Question Text: Electrical tools should be grounded with a(n)________. Switch -Glass. She has an older drill with a steel housing and a 3-prong plug. You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. The small electrical current enters his body through his left leg. :$#k9BPnZ{Qqe/reKy,'ZlB# 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. He yelled for his co-workers to disconnect the power, which they did. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. d. Power outlets, ________ are anything that can transmit electrical current. What do tripped circuit breakers and blown fuses indicate? d.Add more outlets. The most dangerous place to use electrical equipment is? 3.Loose nuts -Current= the movement of electrical charge. (A) Shotgun sticks. Contact utilities for buried power line locations. d. Match the outlet prongs to the extension cord. b.811 0000055319 00000 n a.Ground Fault Circuit Insulator a.A small current In which of the following workplace situations are you at risk for coming into contact with live electrical . 4.Flex b. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. 3.Clear 4.Must be replaced, Always use a GFCI: It is important to note that NFPA 70E is a . <> Cardiac arrest or death - A result of electrical shock. c. No, because the electricity is needed on a long-term basis. 3.No, because he will not be touching any grounded material when using the tool. 1452 25 <<7628BB2D46738F42B2FC6393656F4718>]>> What was Latoya's first mistake? %%EOF Water h|UnH}+i-. 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 Post warning signs. 0000004921 00000 n 2.Grease 2.Loss of muscle control Use non-conductive wood or fiberglass ladders when working near power lines. Extension cords had poor splices, no grounds, and reversed polarity. The auger has a one-quarter horsepower motor encased in a metal housing with two handles. d) All of the above. 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. specifically addresses electrical protective devices. 0000005406 00000 n 0000427811 00000 n Co-workers provided CPR, but were unable to revive the victim. 1.When you are using electricity near water vpfuI)],s Is not painted over Outlets 0000068035 00000 n Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. 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. Unless you know otherwise, assume that overhead lines are energized. Electrical Hazards Electrical hazards can be found in nearly every roofing work site. a.related to muscle damage. D 600v. 4 0 obj hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. 0000003254 00000 n The floor is covered in water and she is barefoot. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream 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? 4 0 obj Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. 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: a.20,000 volts OSHA 29 CFR 1910.147 . 0000002403 00000 n 4.Broken. 0000005050 00000 n c) Age Visually inspect all electrical equipment before use. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. List the four main types of electrical injuries, Using the illustration, select the answer that matches the picture, Identify the illustration by selecting the appropriate answer. [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. a.Extension cords Carly needs to use an extension cord with her corded nail gun. The modification of the plug was not an intended use or prescribed by the manufacturer. 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. The ground wire was not attached on the male end of the cord's plug. 3. (3,2,1), (5,4,3). 0000005716 00000 n . _.9u'2G_0 Ue]e"x5|Y Ground all power supply systems, electrical circuits, and electrical equipment. 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. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. Power was supplied through two extension cords from a nearby residence. Identify the oxidizing and reducing agents. On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. [29 CFR 1926.416(a)(1)]. 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. When it completes a circuit through the body. Then answer the questions below. 2. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). Hand-operated metal shifting ropes or cables of electric elevators. Use tools and equipment according to the instructions included in their listing, labeling or certification. 0000422244 00000 n (B) Switch sticks. Looking for NFPA 70E Certification? 1. b.Ground Fault Critical Interrupter Is split 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: Using cords or tools with worn insulation or exposed wires. d.Alert workers of any water in the area, GFCI is an acronym for: This may damage your equipment and cause employee injuries. 0000004686 00000 n 1.Damaged cover or insulation 4.The amount of current, An electrical burn may affect: b.A fast-acting switch monitoring current flow 0000000016 00000 n Select the correct answer and then click DONE. c.40,000 volts 0000003413 00000 n The factors that determine the severity of an electrical injury include: <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 1452 0 obj <> endobj Select the correct answer and then click DONE. c.A measurement of electricity D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? Safe operation of hand and portable powered tools and other hand-held equipment. 0000003603 00000 n The following references aid in recognizing hazards associated with electrical work. When an electric shock occurs, your muscles may: 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. Do not remove ground prongs from cord- and plug-connected equipment or extension cords. No GFCI's were used. 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. 0000419562 00000 n . 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. A measure of the energy of motion of the particles in a substance is its _____. Of the following choices, which are frequent electrical hazards 0000008392 00000 n 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: d.The body of the power tool. Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. 0000028595 00000 n If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. As she is adding in the chemicals, her hand touches the motor and it becomes energized. 3.The length of time the body is in contact with electricity Take any defective equipment out of service. 0000108920 00000 n s\A0W+ 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. 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. 0000021516 00000 n 0000002479 00000 n 1.Fingernails Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. When inspecting extension cords, look for: True. Best practices with power lines include: Quiz Question 2: Which is acceptable when using powdered tools? 0000001116 00000 n gYpV:+ b.10 feet endobj -Grounding= a conductive connection to the earth which acts as a protective measure. a.Electricity If a defective power tool gives you an electric shock, how might your muscles react? %PDF-1.4 % Explosion q>NmnLNmb$"Iyx1bD9.~Ll. 0 c.The outlet. xref Dust 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 current travels through insulated ________. The following are electrical hazards: Shock. Using equipment outdoors that is labeled for use only in dry, indoor locations. [Power Tools]. )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'. Bob is asked to repair some overhead wiring, requiring the use a ladder. Extension cords may become a trip hazard when: 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? 0000110659 00000 n If you are touching any grounded material while using a power tool Which of the following factors determine how severe an electrical injury might be? b.30,000 volts hazard or that their employer is not following OSHA's rules. Fire A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. ZR)!=w|; @uT C0? . View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. 0000006893 00000 n c.falls. Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. 3. 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. 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. Muscular contraction and nerve damage occur; death likely.