%PDF-1.4 % Yes, because he will be using electricity near water. 1.The humidity of the environment c.falls. 0000021516 00000 n A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. 1. -Conductor= permits the free flow of electricity. a) Ensure overhead power line safety Select the correct answer and then click on DONE. When does electricity become hazardous to humans? Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. @*@;z}IAH@3MsgU1Dnf@agLahpCn@&b|-^;b0k*!3VYy,jy%( Z%|\Jg"dRp-Wbz3QJS%k9p_WtZ Be sure equipment that has been shop fabricated or altered is in compliance. Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. 3.Something that causes current to flow through the . d. Power outlets, ________ are anything that can transmit electrical current. If a defective power tool gives you an electric shock, how might your muscles react? A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. 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. 3.Needs to be reset 0000001495 00000 n a.Standing in water %PDF-1.5 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. 2.Placed along a wall. 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. using a 30-amp breaker in a system with 15- or 20-amp receptacles. Ground all power supply systems, electrical circuits, and electrical equipment. 2.Yes, because he is using a portable power tool. Quiz: Electrical Hazards. (B) Switch sticks. 0000004965 00000 n Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. Supply power for tools or equipment on a long-term basis. The source of the shocks -- the saw -- was not replaced. 0000414648 00000 n d.Adapter, What is a GFCI? The auger has a one-quarter horsepower motor encased in a metal housing with two handles. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Select the correct answer and then click DONE. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. Death is probable. b.The tool's power cord. b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. Regarding hand protection employers should: A. Question 4: Which of the following is a type of burn caused by electrical hazards? 0000057373 00000 n Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. 2.Loss of muscle control Before using the equipment, be sure that the ground wire: Freeze In which of the following workplace situations are you at risk for coming into contact with live electrical . Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. 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. b.10 feet hazard or that their employer is not following OSHA's rules. 0000108653 00000 n Does the fall qualify as an electrical accident? 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. D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. %PDF-1.4 % 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. a.Ground Fault Circuit Insulator |tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s If a worker has been retaliated against for using their rights, they Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. <>>> 1476 0 obj <>stream H. 1.Pain Wearing a baseball cap Provide a safe path to earth ground for electricity. 0000004273 00000 n Extension cords had poor splices, no grounds, and reversed polarity. b.Ground Fault Critical Interrupter Electric current cannot exist without an unbroken path to and from the conductor. 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. <>>> Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. Select the correct answer and then click DONE. 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. heart attacks. b.811 -Grounding= a conductive connection to the earth which acts as a protective measure. 3.Draped over equipment. h|UnH}+i-. <> (E) a, b, and c. 2. RZyd Co-workers provided CPR, but were unable to revive the victim. Best Practices with Power Lines 1. Select the correct answer and then click DONE. View Answer Answer: 600v 4 . gYpV:+ Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. Select the correct answer and then click DONE. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. To avoid injury or death, you must understand and recognize hazards. 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. DHPP0MHLHIPPXc f2LXL"dgJ:@ ys`llr-shH,Y@Z 23J0a_TXD;X,;&0i,i&f&T8h R/ v`,l. 440!2D9482q={LPXs +( endstream endobj 129 0 obj <> endobj 130 0 obj <> endobj 131 0 obj <>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageB]/ExtGState<>>> endobj 132 0 obj <> endobj 133 0 obj <> endobj 134 0 obj <> endobj 135 0 obj <>stream 1.Extension cords Apparently, his hand contracted and he was "locked" to the saw. a.Shut off power within a fraction of a second She finds several available in the shop. d.A power tool, A GFCI is designed to: 0000010603 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. 1.Is faulty xYmo -ER/&@[D,_! b. 0000003640 00000 n 0000001604 00000 n 0000003715 00000 n OSHA 29 CFR 1910, Subpart S . 0000002386 00000 n 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! 4.Circuit breakers, When inspecting power tools, look for: Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. Using equipment outdoors that is labeled for use only in dry, indoor locations. Additionally, the ground prong was missing and there was no GFCI protection. True. Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. The most dangerous place to use electrical equipment is? Check your employee's electrical safety knowledge through an electrical safety quiz. startxref The workers had removed their shirts and were sweating. 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. 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. Provides information about the hazards that electrical workers may experience as a part of their jobs. Draw a line from the item on the left that corresponds to the match on the right. 0000419562 00000 n . 1.Cuts 0000001646 00000 n Which of the following can be caused by exposure to an arc flash? 0000001731 00000 n De-energize and ground lines when working near them. When inspecting extension cords, look for: Power was supplied through two extension cords from a nearby residence. 1. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. a.Conductive objects Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. ZR)!=w|; @uT C0? -Damage to internal organs. One hand drill was not grounded, and the other had no safety plate. 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. -Wood. Identify the oxidizing and reducing agents. The factors that determine the severity of an electrical injury include: Does the fall qualify as an electrical accident? (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. OSHA 29 CFR 1910.147 . 0000010155 00000 n Draw a line from the item on the left that corresponds to the match on the right. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. Select the correct answer and then click DONE. The victim provided a path to ground and was electrocuted. 1.Missing or broken path to ground. 1452 25 What was Latoya's first mistake? Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. 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). 3 0 obj d.50,000 volts. De-energizing 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. Quiz Question 1: Which of the following is not a category of electrical burns? x=k6S *ywvkDyb_w rg&@Q5/^4O_~w/]7[xqs7Zt?LK-,>W\W`Mb?n8\.vpOJA7~5R%.oJd|Bbv7biQH%^~C=m3_ov{8] }C.Se={o7H[w@/^j BgXRC/O/eiLHiN\4~7x=^J@|]zu"x]lQ-+.xF=oY +B?jSl|(agF_].+UH\!/;AU .cG!h@42 iqnkZtdc#^)AX96(wFZ,RP{[\j\aJgc) diV;BNzZge(}=0Pj Qp@"]yOnNw89 3.Loss of eyesight 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). B. outdoors. OSHA 29 CFR 1910, Subpart P . Is split 0000004793 00000 n 0000014257 00000 n 3.Loose nuts Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. 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. Which of the following factors determine how severe an electrical injury might be? H\n0)M) 0Ir(,?FoKhdklz6zHG;mOqOh-tv.]NGv~d.m\S{|Fo-x-\"1X/niCYeq"ol8D~&?Kr V_/9yf 9JV%J899s{_G#R0="dL5,p: A measure of the energy of motion of the particles in a substance is its _____. Select the correct answer and then click DONE. _5JKy. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. Select the correct answer and then click DONE. 0000005406 00000 n When you plug in a device (e.g., a power tool), the electricity takes the easiest path from the plug-in, to the tool, and back to the power source. 0000002733 00000 n [, Do not modify cords or use them incorrectly. Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! 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. 1.A source of electrical current to flow. (C) Hot sticks. 1. Select the choices that accurately define the common electrical term. 2.Loose bolts d. Match the outlet prongs to the extension cord. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. When current travels through your body - Definition of electric shock. Extension cords may become a trip hazard when: <<7628BB2D46738F42B2FC6393656F4718>]>> D 600v. OSHA 10 General Industry Test Answer Key WALKING. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. 3. Should he use an extension cord to power it? 0000003413 00000 n In addition to contact with power lines, the top electrical hazards include: a.Extension cords The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . Visually inspect all electrical equipment before use. 0000006893 00000 n The victim was totally deaf in one ear and suffered diminished hearing in the other. Safe operation of hand and portable powered tools and other hand-held equipment. Select the correct answer and then click DONE. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. 1.Clench d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. a.Yes, because the electrical shock caused the fall. 1.Missing Electrical safety quiz answers are given below. Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. c.Wood b) Staples 4. Question 1: Which of these is a type of Ground Fault Circuit Adapter? (b) The same reaction can also be classified as a redox reaction. A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. Which of the following are insulators of electricity? 0000001896 00000 n b.Yes, as it would be too expensive to install more permanent wiring and receptacles. 0000002150 00000 n 0000420887 00000 n d) All of the above. 0000004946 00000 n You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. 3. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 4.Running through doorways. If you are touching any grounded material while using a power tool Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. A) Identify; Castigate; C) Evaluate; D) Modify; 3. !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ 182 0 obj <> endobj xref 182 41 0000000016 00000 n Using cords or tools with worn insulation or exposed wires. Examples of Equipment That Can Contact Power Lines. 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. -Rubber. A. indoors. Water Additional minimum clearance distance is required for power lines carrying over ________. a.20,000 volts The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. 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.
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