0000001861 00000 n Select the correct answer and then click on DONE. BE SAFE! trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream 0000421920 00000 n 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. H. 0000001116 00000 n 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. 5. Bob is asked to repair some overhead wiring, requiring the use a ladder. d) All of the above. Regarding hand protection employers should: A. 0000017163 00000 n 0000002150 00000 n Underground electrical hazards are: A. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? The victim signaled the operator of the crane to extend the boom and lower the hoist cable. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. -Conductor= permits the free flow of electricity. 4. 0000022637 00000 n 1 0 obj 0000014257 00000 n b.The tool's power cord. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> What is the primary purpose of properly grounding equipment? Stay at least 10 feet away from overhead power lines. 0000004884 00000 n Using multi-receptacle boxes designed to be. 0000056642 00000 n 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. An employee was texturing a wall using an air compressor. 0000002733 00000 n The victim collapsed into the lake and sank 4-1/2 feet to the bottom. OSHA Safety and Health Topics Page. Before using the equipment, be sure that the ground wire: What is the most common, non-fatal, electrical shock-related injury? 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. How might this event affect the ability of animals to obtain energy to live? Apply a warning tag to any defective tool and do not use it until the problem has been corrected. b.30,000 volts 2. How will she choose the correct cord? What type of burns are the result of current flowing through and exiting the body? Work performed on an electrical system within reaching distance of energized components is_____work. 2.Using extension cords or electrical tools properly. 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 1.Flammable liquids [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. b.Shut off power within five minutes of the imbalance Look for overhead power lines and buried power line indicators. 0000002122 00000 n Is not painted over Cardiac arrest or death - A result of electrical shock. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. Best practices with power lines include: Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 1.Is faulty %PDF-1.4 % 0000005734 00000 n Computers a) Ensure overhead power line safety Select the correct answer and then click DONE. 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 0000003771 00000 n lex has set up a mobile engine testing station in the maintenance area. Flexible Cord Not 3-Wire, Hard Service Variety: A worker received a fatal shock when he was cutting drywall with a metal casing router. Looking for NFPA 70E Certification? 182 0 obj <> endobj xref 182 41 0000000016 00000 n What was Latoya's first mistake? Quiz Question 3: Power cords can be damaged by which of the following? 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. What do tripped circuit breakers and blown fuses indicate? <> After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. The following references aid in recognizing hazards associated with electrical work. 0000005406 00000 n Which of the following are conductor of electricity? Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. d.50,000 volts. [, Use all equipment according to the manufacturer's instructions. One handle has a deadman's switch. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. Which of the following part of you body can burn if you come in contact with electricity? 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. Not checking to make sure that the motor was properly grounded, If the circuit does not turn off when testing the GFCI, the GFCI: Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. Visually inspect all electrical equipment before use. A measure of the energy of motion of the particles in a substance is its _____. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? c.Touching the motor 3.Tears 3.The length of time the body is in contact with electricity vpfuI)],s 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. [. 3.Vapor Select the choices that accurately define the common electrical term. 3. Death. Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. What factors determine the severity of Dirk's injuries? Additionally, the ground prongs were missing from the two cords. _5JKy. D. Have an ANSI sticker and an expiration date. 1452 25 Frames of non-electrically driven elevator cars to which electric conductors are attached. 128 0 obj <> endobj xref 128 26 0000000016 00000 n He yelled for his co-workers to disconnect the power, which they did. b. Deductive objects OSHA 29 CFR 1910, Subpart P . She finds several available in the shop. Using a dry wood ladder when the possibility exists for contact with electricity. A co-worker disconnected the power cord to the saw, too late to save the victim. 3.Loose nuts 1.Extension cords 12 months C. 6 months D. Never Q23. a.related to muscle damage. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. 2.Complete 0000001646 00000 n Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. 0000414648 00000 n 0000001604 00000 n 1.A source of electrical current to flow. d) All of the above. a.Your thumb. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) 4. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. b. endobj 0000006893 00000 n 0000009628 00000 n 0000110659 00000 n Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? Using tools and equipment that can contact power lines increases the risk. When inspecting extension cords, look for: endobj A 120v. 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. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. 0000427811 00000 n 1476 0 obj <>stream Question 2: Which of the following are ways employers must protect their employees on the workplace? 0000004965 00000 n View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. Electrocution. c) Establish and enact an assured equipment grounding conductor program (AEGCP) Provides information about the hazards that electrical workers may experience as a part of their jobs. c.falls. Select the correct answer and then click DONE. [Power Tools]. 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 . a.Two-prong plug 0000108653 00000 n A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. Select the choices that accurately define the common electrical term. A. indoors. 30 days B. c. Extend the reach of the power tool. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. <> 1. specifically addresses electrical protective devices. d. Match the outlet prongs to the extension cord. Potential hazards of electricity are preventable if you do which of the following listed below? A) Identify; Castigate; C) Evaluate; D) Modify; 3. Explosion 0000001908 00000 n The source of the shocks -- the saw -- was not replaced. True. a.A small current a.Ground Fault Circuit Insulator 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. On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. a.Electricity !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ 0000000816 00000 n Quiz Question 1: Which of the following is not a category of electrical burns? OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. OSHA 10 General Industry Test Answer Key WALKING. 4. c. Match the color of the tool to the color of the extension cord. What is the output of the program in Exercise 17, if first = 26 and second = 8? Ajay needs to use a dewatering pump to drain standing water on a construction site. If a defective power tool gives you an electric shock, how might your muscles react? 1.When you are using electricity near water Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. 0000005716 00000 n b.Ground Fault Critical Interrupter Using equipment outdoors that is labeled for use only in dry, indoor locations. 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). Apparently, his hand contracted and he was "locked" to the saw. gYpV:+ Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. Question 1: Which of these is a type of Ground Fault Circuit Adapter? ZR)!=w|; @uT C0? Select the correct answer and then click DONE. As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. 0000012944 00000 n a. 0000002876 00000 n 3.Loss of eyesight The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. High humidity If a worker has been retaliated against for using their rights, they A) 120v . Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. When an electric shock occurs, your muscles may: % 0000028595 00000 n Both could have prevented the accident from occuring. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. 3.Draped over equipment. 0000002557 00000 n Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. Co-workers provided CPR, but were unable to revive the victim. One worker, holding the deadman's switch, received a shock from a ground fault in the auger and was knocked back from the machine. 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: 3.Something that causes current to flow through the . 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. Question 2: Which of the following is NOT a category of electrical burns? The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . Electrical Hazards Electrical hazards can be found in nearly every roofing work site. Isolating, Power lines may be located underground. d.Water, Other electrical hazards in the workplace include: 0000004444 00000 n Which of the following factors determine how severe an electrical injury might be? 1.Is firmly connected a.Yes, because the electrical shock caused the fall. Continually audit cords on-site. Intentionally creating a low-resistance path that connects to the earth. Electrical Safety Multiple Choice Questions and Answers for competitive exams. 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. s\A0W+ OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. Select the correct answer and then click DONE. The victim was totally deaf in one ear and suffered diminished hearing in the other. a. Gaseous matter OSHA will keep all identities confidential. Electrical hazards expose workers to the following: Burns: Three types; electrical, arc flash, or thermal contact. Additional minimum clearance distance is required for power lines carrying over ________. %PDF-1.5 Provide a safe path to earth ground for electricity. 0000422244 00000 n The ________ keeps the electricity on its intended path through the conductor. 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 Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. c. Inductive objects A. wrap tape around the damaged spot to prevent electrical shocks. C. near water. 1.Pain c.15 feet q>NmnLNmb$"Iyx1bD9.~Ll. c.Power lines The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. 0000007427 00000 n c.Absorb any water around the area hazard or that their employer is not following OSHA's rules. Equipment used in manner prescribed. Contact utilities for buried power line locations. Safe operation of hand and portable powered tools and other hand-held equipment. Extension cords may become a trip hazard when: What three things must be present for a current to flow through a conductor. 3.Clear d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. Use non-conductive wood or fiberglass ladders when working near power lines. Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. Quiz Question 2: Which is acceptable when using powdered tools? Of the following choices, which are frequent electrical hazards The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. 0000004686 00000 n Get All Answers to OSHA 30 Construction Final Exam. 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. 2. Does the fall qualify as an electrical accident? D. near other electrical equipment. Water Fire 0000001896 00000 n 0000003900 00000 n Which of the following can be the result of electric shock? The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. [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. 3 0 obj As she is adding in the chemicals, her hand touches the motor and it becomes energized. Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. _.9u'2G_0 Ue]e"x5|Y 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. 4 0 obj 0 -If current passes through the body near the heart or brain. While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! Dust 0000004921 00000 n Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. If you are touching any grounded material while using a power tool It is important to note that NFPA 70E is a . 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. 0000005042 00000 n d.The body of the power tool. Effective means of controlling power line hazards include: b.Yes, as it would be too expensive to install more permanent wiring and receptacles. Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property.
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