0000028595 00000 n 21 Examples Of Electrical Hazards - HSEWatch uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. Question 3: A/an ____________ is a unit of measurement for electrical resistance. Co-workers provided CPR, but were unable to revive the victim. Ajay needs to use a dewatering pump to drain standing water on a construction site. Supply power for tools or equipment on a long-term basis. 0000021516 00000 n 0000003603 00000 n Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? View Answer Answer: 600v 4 . Use tools and equipment according to the instructions included in their listing, labeling or certification. Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. C 277v. %PDF-1.4 % b. This caused him to fall from the ladder and land in a puddle of water, still holding the saw. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. 4. 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? 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 plug of the compressor and an extension cord had been modified to fit a wall outlet for a common household clothes dryer (220 V). 3.Draped over equipment. Quiz Question 2: Which is acceptable when using powdered tools? c. No, because the electricity is needed on a long-term basis. 0000002122 00000 n HWMo#7v#h>6,Z4- It is important to note that NFPA 70E is a . <>>> Protection is lost because it will not trip when the system's load has been exceeded. d. Match the outlet prongs to the extension cord. [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. Additionally, the ground prongs were missing from the two cords. The victim used two extension cords to supply power: a home-made cord plugged into an ungrounded receptacle on the pole, and a UL-approved cord extending from the homemade cord to the saw. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. d) All of the above. Most of the hydrides of Group 1A and Group 2A metals are ionic. eTool : Construction - Electrical Incidents | Occupational Safety and 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. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. Which of the following factors determine how severe an electrical injury might be? Electrical hazards are life threatening incidents that could happen due to electricity. b.Ground Fault Critical Interrupter endobj . b.Not wearing insulating shoes or boots when she was handling electrical equipment 2. True. PDF OSHA Safety - Electrical Safety - Red Vector 0000005734 00000 n SECTION #4 | Participant Guide 2 Electrical Safety mELECTRICAL SAFETYm mACTIVITY 1 - GROUNDINGm In your small group, read fact sheets A and B, and the following scenario. Best practices with power lines include: Question 2: Which of the following are ways . g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream Switch When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. gYpV:+ Electrical Hazards - SSOE Group Frames of non-electrically driven elevator cars to which electric conductors are attached. If you are touching any grounded material while using a power tool 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. Isolating, Power lines may be located underground. Quiz: Electrical Hazards. Determine duration, frequency, degree of exposure to hazards and physical stress. 0000003715 00000 n The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. 1. The contact lasts for 5 seconds before someone is able to shut off the power. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. 3.Tears qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. -Conductor= permits the free flow of electricity. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. 5 feet 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. Wearing a baseball cap If a defective power tool gives you an electric shock, how might your muscles react? No GFCI's were used. Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. -Grounding= a conductive connection to the earth which acts as a protective measure. A. indoors. How fast would the ball be moving at the moment of release? What was Latoya's first mistake? 3.Clear 0000003900 00000 n d) All of the above. OSHA 30 - Quiz 3 - Electrocution Hazards Flashcards | Quizlet 3. Examples of Equipment That Can Contact Power Lines. 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. 0 -Severe skin burns. 0000004946 00000 n Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. b) By supplying GFCIs, or ground-fault circuit interrupters c.Gasoline 0000056642 00000 n A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. Working with electricity can be dangerous. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. a.Standing in water a.Yes, as it is a mobile engine testing station. An employee was texturing a wall using an air compressor. c.Touching the motor 0000008392 00000 n Visually inspect all electrical equipment before use. Using equipment outdoors that is labeled for use only in dry, indoor locations. 1. 2. Explosion Water The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. 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. 3. 1.Pain Select the correct answer and then click DONE. -If current passes through the body near the heart or brain. Using tools and equipment that can contact power lines increases the risk. Quiz Question 7: Which is not an insulator? %PDF-1.5 2.Is working properly b.Rod 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. 2.Using an aluminum ladder when the possibility exists for contact with electricity. lex has set up a mobile engine testing station in the maintenance area. 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. Intentionally creating a low-resistance path that connects to the earth. d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. s\A0W+GA?~G?nnnnnnnnnnnn>>{Wrbrbrbrb sbZef'N(:QvD":1vbo7o7o7W*_bTs6ivyU,;dFW` { endstream endobj 191 0 obj [/ICCBased 211 0 R] endobj 192 0 obj <> endobj 193 0 obj <> endobj 194 0 obj <> endobj 195 0 obj <> endobj 196 0 obj <>stream Additional minimum clearance distance is required for power lines carrying over ________. <> a.Supply power for tools or equipment on a temporary or short-term basis. OSHA 29 CFR 1910, Subpart P . 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. The workers administered CPR to the victim, but to no avail. The ________ keeps the electricity on its intended path through the conductor. ( Select the correct answer and then click DONE. Visually inspect all electrical equipment before use. 0000004274 00000 n 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. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. Burns. 0000013716 00000 n Select the correct answer and then click DONE. Electrical Contractors Industry. What is the most common, non-fatal, electrical shock-related injury? Which of the following injuries can occur when muscles flex or twitch from an electrical shock? How will she choose the correct cord? d.Water, Other electrical hazards in the workplace include: Using a dry wood ladder when the possibility exists for contact with electricity. 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 . OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. 0000005716 00000 n BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. Apparently, his hand contracted and he was "locked" to the saw. A. wrap tape around the damaged spot to prevent electrical shocks. Use only equipment that is approved to meet OSHA standards. 1. *Effects are for voltages less than about 600 volts. Use only cords, connection devices, and fittings that are equipped with strain relief. 0000004884 00000 n 2.Something to transport the electrical current -- A conductor. 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. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream 2. 0000007741 00000 n Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. Latoya is using a mixing motor to mix pool chemicals in a plastic drum. b.10 feet 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 Safety Multiple Choice Questions(MCQs) & Answers - gkseries Which of the following can be caused by exposure to an arc flash? Electrical Safety Standards in the Workplace - NFPA 70E - Grainger KnowHow The following references aid in recognizing hazards associated with electrical work. Potential hazards of electricity are preventable if you do which of the following listed below? 1. SCENARIO: You encounter a co-worker on a residential remodeling job. Use non-conductive wood or fiberglass ladders when working near power lines. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. a.Conductive objects The small electrical current enters his body through his left leg. 3.ack of ground fault protection. c.falls. An 18-year-old worker at a construction site was electrocuted when he touched a light fixture while descending from a scaffold for his afternoon break. 2.Skin Use only extension cords that are 3-wire type. Question 1: Each year, approximately __________ workers suffer from electricity related injuries. What type of burns are the result of current flowing through and exiting the body? Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. What three things must be present for a current to flow through a conductor. Electrical Safety Quiz-Test Your Electrical Safety Knowledge 0000017336 00000 n 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. 0000010603 00000 n Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires Unless you know otherwise, assume that overhead lines are energized. OSHA Safety and Health Topics Page. startxref Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: Which of the following are insulators of electricity? D. Have an ANSI sticker and an expiration date. Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. 0000421920 00000 n c.Power lines View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. -Rubber. 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. PDF ODULE 1 INTRODUCTION TO E SAFETY - Occupational Safety and Health Electric current cannot exist without an unbroken path to and from the conductor. d. Power outlets, ________ are anything that can transmit electrical current. 2.Loose bolts 0000005050 00000 n 4 0 obj (3,2,1), (5,4,3). [, Use all equipment according to the manufacturer's instructions. Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. Contact utilities for buried power line locations. OSHA will keep all identities confidential. Introduction To Osha Quiz Answers1) Which of the following activities You should? 3. D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. 182 0 obj <> endobj xref 182 41 0000000016 00000 n The floor is covered in water and she is barefoot. 0000003254 00000 n 0000007427 00000 n The victim was totally deaf in one ear and suffered diminished hearing in the other. Post warning signs. 3.Loss of eyesight [Power Tools]. Extension cords are used to: endobj 4. 4. d.Metal, Over half of all deaths caused by electricity result from contact with ________. c.Three-prong plug 0000007464 00000 n A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. As she is adding in the chemicals, her hand touches the motor and it becomes energized. 4. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. 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). OSHA 29 CFR 1910.147 . a.20,000 volts OSHA 29 CFR 1910, Subpart S . On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. 3. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. 0000005042 00000 n 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+ trailer D 600v. Both could have prevented the accident from occuring. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Carly needs to use an extension cord with her corded nail gun. 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 Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. Explain the purpose and use of the MyPlate symbol. 1.Is faulty Fire (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) Electrical current travels through insulated ________. 1476 0 obj <>stream 1.A source of electrical current to flow. Match the length from job to outlet. Does the fall qualify as an electrical accident? Muscular contraction and nerve damage occur; death likely. Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? Quiz Question 9: Conductor insulation must be approved for the ___________ of use? The auger has a one-quarter horsepower motor encased in a metal housing with two handles. Draw a line from the item on the left that corresponds to the match on the right. PDF Working Safely with Electricity - Occupational Safety and Health 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). Electrical - Overview | Occupational Safety and Health Administration 1.Flammable liquids CCOHS: Electrical Safety - Basic Information <> c. Extend the reach of the power tool. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. Effective means of controlling power line hazards include: b.Shut off power within five minutes of the imbalance Work performed on an electrical system within reaching distance of energized components is_____work. 0000001731 00000 n x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. Question 1: Which of the following is a danger of electricity? This is action is also known as creating or completing an electrical circuit. 3.Vapor Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. 2.Grounding Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. What is the output of the program in Exercise 17, if first = 26 and second = 8? The factors that determine the severity of an electrical injury include: 0000000816 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.Two-prong plug c. Match the color of the tool to the color of the extension cord. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . 0000001896 00000 n 4.Flex OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. c.A measurement of electricity 0000001646 00000 n If a worker has been retaliated against for using their rights, they d.50,000 volts. 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. Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. When inspecting extension cords, look for: Is not broken, Question Text: Electrical tools should be grounded with a(n)________. (E) a, b, and c. 2. Be sure equipment that has been shop fabricated or altered is in compliance. He may have dropped the extension cord at the site and not heard the connector break. 5. Quiz Question 1: Which of the following is not a category of electrical burns? 1.Cuts c.Wood 3.Something that causes current to flow through the . 0000002479 00000 n 0000017163 00000 n c.40,000 volts b.Electrical tools Apply a warning tag to any defective tool and do not use it until the problem has been corrected. Electricity will form a "path" or "loop". Select the correct answer and then click DONE. Short Confined spaces Machinery-related hazards (lockout/tagout, boiler safety, forklifts, etc.) 1. Question 1: Which of these is a type of Ground Fault Circuit Adapter? OSHA 10 General Industry Test Answer Key WALKING. Electrocution. 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 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. d. No, because an extension cord would not provide enough power. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB 1.Clench 1.Missing or broken path to ground. PDF Electrical Safety - Occupational Safety and Health Administration 0000004208 00000 n @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. OSHA: How Electricity Works Flashcards | Quizlet 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. 0000002876 00000 n You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. 0000004444 00000 n (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. c) Establish and enact an assured equipment grounding conductor program (AEGCP) Safe operation of hand and portable powered tools and other hand-held equipment. a.related to muscle damage. h|UnH}+i-. Select the correct answer and then click DONE. How might this event affect the ability of animals to obtain energy to live? True. stream 3.When you are using portable power tools Ground all power supply systems, electrical circuits, and electrical equipment. What is the primary purpose of properly grounding equipment? Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. 4.Circuit breakers, When inspecting power tools, look for: 3.Loose nuts Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. NFPA 70E: Standard for Electrical Safety in the Workplace A 120v. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Additionally, the ground prong was missing and there was no GFCI protection. In 2017, there were over ______________ electrical related violations cited by OSHA in the workplace. c.911 [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. Electrical Safety Assessment Quiz Answers | ISHN 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. d. heart attacks. 0000001116 00000 n 1452 0 obj <> endobj b.burns. % -Voltage= a measure of electrical force. 0000001604 00000 n [Flexible Cords and Power Tools]. Course 812 Module 7 OSHA Focus Four Hazards: Electrocution - OSHAcademy 1. PDF SAFETY HAZARDS: These are the most PHYSICAL HAZARDS: CHEMICAL HAZARDS Which of the following can be the result of electric shock?