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Isolating, Power lines may be located underground. Besides personal bodily injury, what other electrical hazards can be found in the workplace? The auger has a one-quarter horsepower motor encased in a metal housing with two handles. endobj h|UnH}+i-. d.Adapter, What is a GFCI? Burns. In which of the following workplace situations are you at risk for coming into contact with live electrical . What type of burns are the result of current flowing through and exiting the body? 1.Missing or broken path to ground. 0000001896 00000 n Extension cords are used to: Regarding hand protection employers should: A. Hand-operated metal shifting ropes or cables of electric elevators. 4.Combustible dust, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. The source of the shocks -- the saw -- was not replaced. 0000421920 00000 n 2.Loss of muscle control [, Do not modify cords or use them incorrectly. 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. (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) 3. The workers had removed their shirts and were sweating. Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. a.Two-prong plug endobj Unless you know otherwise, assume that overhead lines are energized. 2. 0000004208 00000 n 128 0 obj <> endobj xref 128 26 0000000016 00000 n Of the following choices, which are frequent electrical hazards D. near other electrical equipment. 0000002385 00000 n The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). 0000004444 00000 n 0000012944 00000 n The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. 0000007694 00000 n b.Not wearing insulating shoes or boots when she was handling electrical equipment b.The tool's power cord. Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . 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 <> %PDF-1.4 % Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. Should he use an extension cord to power it? Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . a. Post warning signs. Most of the hydrides of Group 1A and Group 2A metals are ionic. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. Lockout/tagout procedures. 2. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. 2.Loose screws Protection is lost because it will not trip when the system's load has been exceeded. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. 2.Using extension cords or electrical tools properly. 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: Using equipment outdoors that is labeled for use only in dry, indoor locations. Explosion d.The body of the power tool. (E) a, b, and c. 2. 4.Broken. c.falls. Contact utilities for buried power line locations. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. c. No, because the electricity is needed on a long-term basis. The modification of the plug was not an intended use or prescribed by the manufacturer. A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. Frames of non-electrically driven elevator cars to which electric conductors are attached. 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. 1.Pain Which group would be more accurate when used in an accelerating spaceship? Ground all exposed metal parts of equipment. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. xref Electrocution. Do not remove ground prongs from cord- and plug-connected equipment or extension cords. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? 2.The person's physical condition <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Additional minimum clearance distance is required for power lines carrying over ________. Select the correct answer and then click DONE. 3 0 obj 4.Cardiac arrest 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. 0000007464 00000 n 0000008392 00000 n 0000001495 00000 n Question 2: Which of the following are ways . 0000005632 00000 n Provides information about the hazards that electrical workers may experience as a part of their jobs. [. 0000005050 00000 n c.15 feet 0000110659 00000 n Effective means of controlling power line hazards include: c) Age Question 2: Which of the following is NOT a category of electrical burns? Water Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. Visually inspect all electrical equipment before use. Extension cords had poor splices, no grounds, and reversed polarity. 2.Loose bolts Quiz Question 1: Which of the following is not a category of electrical burns? 0000420277 00000 n Used across walkways. (3,2,1), (5,4,3). 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. 1.Is firmly connected 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. 0000414648 00000 n Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. 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+ 2.Complete 0000001116 00000 n Quiz Question 9: Conductor insulation must be approved for the ___________ of use? lex has set up a mobile engine testing station in the maintenance area. a) Door or window edges <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 0000003715 00000 n 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. What is the output of the program in Exercise 17, if first = 26 and second = 8? vpfuI)],s -Grounding= a conductive connection to the earth which acts as a protective measure. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. gYpV:+ % 0000002557 00000 n 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? OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. 3. 3.Draped over equipment. 1. 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: Before using the equipment, be sure that the ground wire: 0000024814 00000 n 3 0 obj This caused him to fall from the ladder and land in a puddle of water, still holding the saw. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream In addition to contact with power lines, the top electrical hazards include: The floor is covered in water and she is barefoot. d.Add more outlets. Apply a warning tag to any defective tool and do not use it until the problem has been corrected. Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. b. Use only extension cords that are marked with a designation code for hard or extra-hard usage. 3. c. Match the color of the tool to the color of the extension cord. Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. Some of the causes of these are live wire s that may be lying around, overloaded circuits, explosions that are caused by flammable objects, etc. d. Power outlets, ________ are anything that can transmit electrical current. *Effects are for voltages less than about 600 volts. HJ=S~68438IR/:VR C Y<7H*$F>ya)N1bTa+'OdzydV9QS]b{}(=q?pH,mt8{Ag ]wp?2N$AfnhBL!jV=6ho)5jA8H`Bkh{T[v\G%b|4| Eo*cF ]TBGjB[r6)WzCkQ;Bx(]*JG;&o0TV.P=s4Gs(&e~}j76,-6at$]r**-I!o66PqK.z "*D 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) All of the above. 3.Tears HWMo#7v#h>6,Z4- c.Absorb any water around the area Apparently, his hand contracted and he was "locked" to the saw. 1452 25 Get All Answers to OSHA 30 Construction Final Exam. c.Three-prong plug Wearing a baseball cap 1.When you are using electricity near water c.Power lines Computers OSHA will keep all identities confidential. c.40,000 volts The following references aid in recognizing hazards associated with electrical work. 2. lb MKS Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. 0000001861 00000 n c.The outlet. b.Electrical tools OSHA 29 CFR 1910, Subpart S . Electrical Hazards Electrical hazards can be found in nearly every roofing work site. trailer 0000001731 00000 n %%EOF . The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. 4. Lx*jWP# /c2)|]NXqAx>=~'[ Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. He may have dropped the extension cord at the site and not heard the connector break. The small electrical current enters his body through his left leg. stream a.Your thumb. _5JKy. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. s\A0W+ Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. 0000000016 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. 2.Yes, because he is using a portable power tool. b.Metal 2.Grounding Power was supplied through two extension cords from a nearby residence. 1.Cuts b.Rod Continually audit cords on-site. a.Shut off power within a fraction of a second Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. A co-worker disconnected the power cord to the saw, too late to save the victim. d.50,000 volts. C 277v. When an electric shock occurs, your muscles may: 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. a.A small current The auger then fell across the other worker, the 24-year-old victim. Handling Damaged Extension Cord When Energized: A 19-year-old construction laborer was working with his foreman and another laborer to construct a waterfront bulkhead for a lakeside residence. Test your knowledge with our electrical safety quiz below. 1.Extension cords stream x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q he most common shock-related injuries are: What do tripped circuit breakers and blown fuses indicate? As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 2.Skin 2.Using an aluminum ladder when the possibility exists for contact with electricity. a. 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. . This may damage your equipment and cause employee injuries. High humidity 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 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. |tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s <<7628BB2D46738F42B2FC6393656F4718>]>> H. 4.Must be replaced, Always use a GFCI: 0000005734 00000 n Yes, because he will be using electricity near water. Which of the following factors determine how severe an electrical injury might be? =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR 0000421627 00000 n Which of the following are insulators of electricity? Explain the purpose and use of the MyPlate symbol. Be sure equipment that has been shop fabricated or altered is in compliance. -Falls. 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. 5. 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 Additionally, the ground prongs were missing from the two cords. 0000003254 00000 n When used on the moon? 0000013716 00000 n Check your employee's electrical safety knowledge through an electrical safety quiz. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. This is action is also known as creating or completing an electrical circuit. The NEC C. Suggestions 0000010603 00000 n Quiz: Electrical Hazards. 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. Visually inspect all electrical equipment before use. What three things must be present for a current to flow through a conductor. 0000002876 00000 n Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. Both could have prevented the accident from occuring. Should Ajay use a GFCI? a.Extension cords 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. 3. b. . The victim collapsed into the lake and sank 4-1/2 feet to the bottom. 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. %PDF-1.5 trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream One handle has a deadman's switch. b) By supplying GFCIs, or ground-fault circuit interrupters 0000028595 00000 n 0000011060 00000 n 0000009628 00000 n b.Match the thickness of the extension cord to the thickness of the nail gun's power cord. 1 0 obj SCENARIO: You encounter a co-worker on a residential remodeling job. 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.