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The auger has a one-quarter horsepower motor encased in a metal housing with two handles. It is important to note that NFPA 70E is a . 0000018681 00000 n
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h|UnH}+i-. a.Your thumb. a. Gaseous matter You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. Effective means of controlling power line hazards include: Working with electricity can be dangerous. Examples of Equipment That Can Contact Power Lines. 3.Draped over equipment. The workers administered CPR to the victim, but to no avail. Quiz Question 2: Which is acceptable when using powdered tools? c. Inductive objects What is the primary purpose of properly grounding equipment? 0000005734 00000 n
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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. On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. <<7628BB2D46738F42B2FC6393656F4718>]>>
De-energize and ground lines when working near them. Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. 0000017163 00000 n
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TZObFT*.#BQF/Q 1.Is firmly connected 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. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? 2.Using an aluminum ladder when the possibility exists for contact with electricity. )KL3C?e%Y92$,]^)kmR/!8\
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The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. Which of the following factors determine how severe an electrical injury might be? Explain the purpose and use of the MyPlate symbol. b.811 0000028595 00000 n
b.burns. Outlets 2.Is working properly b.Shut off power within five minutes of the imbalance 0000010155 00000 n
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d. No, because an extension cord would not provide enough power. 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: 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. c.15 feet a.Two-prong plug hbb``b``3N0
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Quiz Question 7: Which is not an insulator? Easy to identify Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. Which group would be more accurate when used in an accelerating spaceship? c.Touching the motor Most of the hydrides of Group 1A and Group 2A metals are ionic. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. 1. Do not remove ground prongs from cord- and plug-connected equipment or extension cords. Quiz Question 1: Which of the following is not a category of electrical burns? Using multi-receptacle boxes designed to be. After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. B 208v. Carly needs to use an extension cord with her corded nail gun. Frequently inspect electrical systems to insure that the path to ground is continuous. 4.Flex You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. Is not broken, Question Text: Electrical tools should be grounded with a(n)________. 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? 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. 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. Provides information about the hazards that electrical workers may experience as a part of their jobs. A. indoors. <>>>
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(C) Hot sticks. The floor is covered in water and she is barefoot. Used across walkways. 3.Clear A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. 0000022637 00000 n
When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. 0000007694 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. Safe operation of hand and portable powered tools and other hand-held equipment. 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. 1.When you are using electricity near water 2.Something to transport the electrical current -- A conductor. Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. 2.Loss of muscle control When inspecting extension cords, look for: c) Establish and enact an assured equipment grounding conductor program (AEGCP) High humidity When an electric shock occurs, your muscles may: c.falls. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . One hand drill was not grounded, and the other had no safety plate. 1. Post warning signs. Which of the following are caused by contact with electricity? 5 feet 0000009628 00000 n
Select the correct answer and then click DONE. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. She finds several available in the shop. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. Which of the following are insulators of electricity? D. near other electrical equipment. Is not painted over If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. Electrocution. 12 months C. 6 months D. Never Q23. -Rubber. endobj
Using cords or tools with worn insulation or exposed wires. A) 120v . . 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. Select the correct answer and then click DONE. To avoid injury or death, you must understand and recognize hazards. 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. Should he use an extension cord to power it? d) All of the above. 3. 3.Loss of eyesight 2. OSHA 29 CFR 1910, Subpart P . 2.Yes, because he is using a portable power tool. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
-Current= the movement of electrical charge. using a 30-amp breaker in a system with 15- or 20-amp receptacles. You need to evaluate the situation you are in and assess your . x=k6S *ywvkDyb_w rg&@Q5/^4O_~w/]7[xqs7Zt?LK-,>W\W`Mb?n8\.vpOJA7~5R%.oJd|Bbv7biQH%^~C=m3_ov{8]
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Qp@"]yOnNw89 As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. %PDF-1.5
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Ajay needs to use a dewatering pump to drain standing water on a construction site. 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. Is split 2.Grease Look for overhead power lines and buried power line indicators. 0000005520 00000 n
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|tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s d.Adapter, What is a GFCI? he most common shock-related injuries are: lex has set up a mobile engine testing station in the maintenance area. Which of the following can be caused by exposure to an arc flash? Select the choices that accurately define the common electrical term. 0000011060 00000 n
Which of the following can be the result of electric shock? 1.Missing True. 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. Question 1: Which of the following is a danger of electricity? 0000007427 00000 n
When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: 4.Circuit breakers, When inspecting power tools, look for: Using equipment outdoors that is labeled for use only in dry, indoor locations. 0000003640 00000 n
0000002195 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: 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: Explosion. d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. Electric current cannot exist without an unbroken path to and from the conductor. Question 2: Which of the following is NOT a category of electrical burns? 0000000816 00000 n
The workers had removed their shirts and were sweating. 2. Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? 2. 1.Missing or broken path to ground. OSHA Safety and Health Topics Page. b.Ground Fault Critical Interrupter 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. 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. 4. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). 0000005042 00000 n
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1.Damaged cover or insulation Protection is lost because it will not trip when the system's load has been exceeded. 2.Flooding 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. Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. In addition to contact with power lines, the top electrical hazards include: View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. Cardiac arrest or death - A result of electrical shock. The contact lasts for 5 seconds before someone is able to shut off the power. 2. 0000002385 00000 n
%%EOF
s\A0W+ b.30,000 volts 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. 0000419562 00000 n
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. a. Ground all power supply systems, electrical circuits, and electrical equipment. 4. True. 0000000016 00000 n
a.311 *Effects are for voltages less than about 600 volts. <>
a.Shut off power within a fraction of a second 1. [29 CFR 1926.416(a)(1)]. When current travels through your body - Definition of electric shock. 3. b. lb
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Continually audit cords on-site. 0000003715 00000 n
What factors determine the severity of Dirk's injuries? Which of the following part of you body can burn if you come in contact with electricity? a.Supply power for tools or equipment on a temporary or short-term basis. 1.Cuts If a defective power tool gives you an electric shock, how might your muscles react? 0000414648 00000 n
The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) When used on the moon? Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. %
Explosion Water Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). 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. Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. Underground electrical hazards are: A. (3,2,1), (5,4,3). c. No, because the electricity is needed on a long-term basis. No GFCI's were used. Then answer the questions below. 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. Select the correct answer and then click DONE. d.50,000 volts. [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. Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. 0000004273 00000 n
1. a) Door or window edges d.Add more outlets. b+t6W' te+.W_{8u7Dt@1c. 1.A source of electrical current to flow. Remove cords from receptacles by pulling on the plugs, not the cords. 1.Is faulty 0000015549 00000 n
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hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! 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. Electrical Hazards Electrical hazards can be found in nearly every roofing work site. 4.Must be replaced, Always use a GFCI: 4. Switch b.Yes, as it would be too expensive to install more permanent wiring and receptacles. Electrical safety quiz answers are given below. It's okay to use extension cords with worn insulation, as . 0000005632 00000 n
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Select the correct answer and then click on DONE. 2.Skin Select the correct answer and then click DONE. uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 0000001495 00000 n
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Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. Dust b.Not wearing insulating shoes or boots when she was handling electrical equipment 0000017336 00000 n
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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). Provide a safe path to earth ground for electricity. 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. 2. 0000001908 00000 n
Be sure equipment that has been shop fabricated or altered is in compliance. 3.The length of time the body is in contact with electricity 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. d.Metal, Over half of all deaths caused by electricity result from contact with ________. V1?`T`P``ya W3 |"H36K1A@, rO(V[|NAT30 qI?
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Select the correct answer and then click DONE. 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. 0000003254 00000 n
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Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. The following references aid in recognizing hazards associated with electrical work. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. 2.Grounding 0000001646 00000 n
Power was supplied through two extension cords from a nearby residence. Select the correct answer and then click DONE. c.Gasoline d. Power outlets, ________ are anything that can transmit electrical current. 4. Stay at least 10 feet away from overhead power lines. startxref
1.Fingernails As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. What do tripped circuit breakers and blown fuses indicate? 1. (B) Switch sticks. -Severe skin burns. The victim was totally deaf in one ear and suffered diminished hearing in the other. d. Match the outlet prongs to the extension cord. 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. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. He plans to use it over a period of at least six months. b.The tool's power cord. 0000001672 00000 n
As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? BE SAFE! Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. 0000012360 00000 n
Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? 0000420277 00000 n
Select the correct answer and then click DONE. c. Extend the reach of the power tool. b.Yes, because Bob was on . =EAn`u!d, |\~Y>ZF(
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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 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. 0000004686 00000 n
When it completes a circuit through the body. These short objective type questions with answers are very important for competitive exams as well as Board exams. Use only extension cords that are marked with a designation code for hard or extra-hard usage. Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. 3.Body tissue 0000002876 00000 n
Co-workers provided CPR, but were unable to revive the victim. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. -Grounding= a conductive connection to the earth which acts as a protective measure. 0000002733 00000 n
Draw a line from the item on the left that corresponds to the match on the right. Which of the following are conductor of electricity? OSHA will keep all identities confidential. Electrical Safety Multiple Choice Questions and Answers for competitive exams. Match the length from job to outlet. a.Electricity Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. OSHA 10 General Industry Test Answer Key WALKING. 1. Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. _5JKy. He may have dropped the extension cord at the site and not heard the connector break. 0000003900 00000 n
Quiz Question 3: Power cords can be damaged by which of the following? b.Electrical tools A. wrap tape around the damaged spot to prevent electrical shocks. As she is adding in the chemicals, her hand touches the motor and it becomes energized. Unless you know otherwise, assume that overhead lines are energized. Use only extension cords that are 3-wire type. Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. RZyd 1.Extension cords Wearing a baseball cap 0000013999 00000 n
The modification of the plug was not an intended use or prescribed by the manufacturer. d. heart attacks. An employee was texturing a wall using an air compressor. xYmo -ER/&@[D,_! b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. 0000001116 00000 n
The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. Question 3: A/an ____________ is a unit of measurement for electrical resistance. c.Power lines 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. 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 for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. 1. OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. b.10 feet 4.Broken. Should Ajay use a GFCI? Both could have prevented the accident from occuring. a.Yes, as it is a mobile engine testing station. 1. 0000005406 00000 n
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[. Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . endobj
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