0000017336 00000 n Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. Electrical safety quiz answers are given below. Then answer the questions below. b) Staples Question 3: A/an ____________ is a unit of measurement for electrical resistance. b. a.related to muscle damage. c.Guaranteed Fault Circuit Interrupter 5 feet 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. b.Metal |tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. 0000021516 00000 n 2. 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. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Best practices with power lines include: 0000018681 00000 n c.Gasoline %PDF-1.4 % 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. To verify an electrically safe work condition, all these conditions should be confirmed EXCEPT: Effective training of employees includes all of the following EXCEPT: How to operate power tools in wet conditions. Using equipment outdoors that is labeled for use only in dry, indoor locations. Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential? 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. OSHA 10 General Industry Test Answer Key WALKING. The following references aid in recognizing hazards associated with electrical work. The auger has a one-quarter horsepower motor encased in a metal housing with two handles. 0000002733 00000 n Unless you know otherwise, assume that overhead lines are energized. OSHA 10 General Industry Topic Exams Answer Key TOPIC EXAM 1: INTRO TO OSHA 1. The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. 0000004965 00000 n 0000014257 00000 n [, Do not modify cords or use them incorrectly. 4.Cardiac arrest After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. Underground electrical hazards are: A. b.The tool's power cord. _.9u'2G_0 Ue]e"x5|Y High humidity % Other protective measures include guarding or insulating the lines. a.Conductive objects 2.Using an aluminum ladder when the possibility exists for contact with electricity. c.Three-prong plug A. indoors. hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l a) Ensure overhead power line safety Burns. %PDF-1.4 % 0000006866 00000 n 0000110659 00000 n d. 411, You are working with a 10-foot section of a conductive pipe near power lines. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. 1.Is faulty Extension cords are used to: 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. 0000013999 00000 n 4.Must be replaced, Always use a GFCI: What is the output of the program in Exercise 17, if first = 26 and second = 8? Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. Additional minimum clearance distance is required for power lines carrying over ________. OSHA will keep all identities confidential. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? 0000001116 00000 n 4.Organs, The presence of ________ can turn you, your equipment, or insulators like wood into conductors. d. No, because an extension cord would not provide enough power. The source of the shocks -- the saw -- was not replaced. Do not remove ground prongs from cord- and plug-connected equipment or extension cords. OSHA CONSTRUCTION FINAL EXAM Question and Answer Part 10. ly/homeo3b700 Which of the following is a resource within the. x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. 0000003254 00000 n and more. Electrical Contractors Industry. View Answer Answer: 600v 4 . 4 0 obj A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. c.911 Is not painted over 2.Yes, because he is using a portable power tool. hazard or that their employer is not following OSHA's rules. % . Death. 0000001908 00000 n a.311 b. Deductive objects HWMo#7v#h>6,Z4- 0000006893 00000 n ( The victim was part of a crew that was constructing a concrete wall. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. How fast would the ball be moving at the moment of release? 2.Using extension cords or electrical tools properly. A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. Safe operation of hand and portable powered tools and other hand-held equipment. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! 0000055319 00000 n trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream A 120v. 0000002557 00000 n 1452 25 <> 0000108653 00000 n 1. 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: 2.Skin Wearing a baseball cap 0000002479 00000 n 0000005632 00000 n 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. 3.No, because he will not be touching any grounded material when using the tool. b.811 0000056642 00000 n 1.When you are using electricity near water De-energizing 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. Work performed on an electrical system within reaching distance of energized components is_____work. The contact lasts for 5 seconds before someone is able to shut off the power. a.Yes, because the electrical shock caused the fall. 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.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: 3.ack of ground fault protection. Carly needs to use an extension cord with her corded nail gun. 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. gYpV:+ Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. If a worker has been retaliated against for using their rights, they c.The outlet. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. Should Ajay use a GFCI? lb MKS c.Absorb any water around the area The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. In addition to contact with power lines, the top electrical hazards include: While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. Which of the following are conductor of electricity? _5JKy. 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. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. -Severe skin burns. 0000007741 00000 n 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. Both could have prevented the accident from occuring. Additionally, the ground prong was missing and there was no GFCI protection. 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. 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 ________. Regarding hand protection employers should: A. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. In which of the following workplace situations are you at risk for coming into contact with live electrical . 1.Using a fiberglass ladder when the possibility exists for contact with electricity. OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. d.Alert workers of any water in the area, GFCI is an acronym for: 4 0 obj Ground all power supply systems, electrical circuits, and electrical equipment. 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. What type of burns are the result of current flowing through and exiting the body? Cardiac arrest or death - A result of electrical shock. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. 2.Flooding stream Question 1: Each year, approximately __________ workers suffer from electricity related injuries. 0000422244 00000 n c. Extend the reach of the power tool. d/E \VZvl$Y#nH,EIm /\"BQ>Rkl6xZWtAgfs <> Be sure equipment that has been shop fabricated or altered is in compliance. Before using the equipment, be sure that the ground wire: Latoya is using a mixing motor to mix pool chemicals in a plastic drum. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: 1. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. When an electric shock occurs, your muscles may: A) 120v . Select the correct answer and then click DONE. 4,600. 2.Grease 0000420277 00000 n -Wood. 2.Something to transport the electrical current -- A conductor. 1. 0000010155 00000 n 1.Pain 0000002403 00000 n 0000002386 00000 n <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> a. Gaseous matter 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. Is split Apply a warning tag to any defective tool and do not use it until the problem has been corrected. 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. 2.Is working properly Which group would be more accurate when used in an accelerating spaceship? 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 . 0000002385 00000 n He yelled for his co-workers to disconnect the power, which they did. c) Establish and enact an assured equipment grounding conductor program (AEGCP) 0000002122 00000 n a) Door or window edges What was Latoya's first mistake? The victim signaled the operator of the crane to extend the boom and lower the hoist cable. Hand-operated metal shifting ropes or cables of electric elevators. OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and 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. The floor is covered in water and she is barefoot. Check your employee's electrical safety knowledge through an electrical safety quiz. c.Touching the motor 1.Clench 0000003640 00000 n Use only equipment that is approved to meet OSHA standards. Using cords or tools with worn insulation or exposed wires. a.Standing in water Best Practices with Power Lines 1. d. heart attacks. Using a dry wood ladder when the possibility exists for contact with electricity. 0000006152 00000 n 2.Grounding xref [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. 1.Fingernails 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 3.Draped over equipment. Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. [, Use all equipment according to the manufacturer's instructions. Provides information about the hazards that electrical workers may experience as a part of their jobs. 4. 0000009628 00000 n Power was supplied through two extension cords from a nearby residence. Continually audit cords on-site. 0000002876 00000 n Quiz: Electrical Hazards. Remove cords from receptacles by pulling on the plugs, not the cords. No GFCI's were used. <> Select the correct answer and then click DONE. Improper Use of Extension and Flexible Cords. 128 0 obj <> endobj xref 128 26 0000000016 00000 n Of the following choices, which are frequent electrical hazards When used on the moon? 0000004274 00000 n 3. 2 0 obj -If current passes through the body near the heart or brain. Select the correct answer and then click DONE. OSHA Safety and Health Topics Page. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. Ground all exposed metal parts of equipment. Use only extension cords that are marked with a designation code for hard or extra-hard usage. OSHA 29 CFR 1910, Subpart S . 2.Placed along a wall. Examples Of Electrical Hazards. You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. Fire [Power Tools]. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . a. As she is adding in the chemicals, her hand touches the motor and it becomes energized. b.Ground Fault Critical Interrupter Use only extension cords that are 3-wire type. When inspecting extension cords, look for: Does the fall qualify as an electrical accident? Co-workers provided CPR, but were unable to revive the victim. g]+fn_m{mja_0Y w endstream endobj 189 0 obj <> endobj 190 0 obj <>stream a. Which of the following are insulators of electricity? 3.Loose nuts 3 0 obj Electricity becomes hazardous when it takes an unintended path to complete the ________. gYpV:+ Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. %PDF-1.5 When does electricity become hazardous to humans? The accident site was wet; also, humidity was high and the victim was sweating. Select the correct answer and then click DONE. Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? The following are electrical hazards: Shock. Electrocution. 0000004946 00000 n 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. Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires 0000008392 00000 n c) Age b.30,000 volts Quiz Question 7: Which is not an insulator? b.Shut off power within five minutes of the imbalance B 208v. You need to evaluate the situation you are in and assess your . Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. 0000003715 00000 n Select the correct answer and then click DONE. 0000427811 00000 n 0000000816 00000 n -Grounding= a conductive connection to the earth which acts as a protective measure. Select the correct answer and then click DONE. 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. Water Explosion. True. 1 0 obj 3.The length of time the body is in contact with electricity Question 4: Which of the following is a type of burn caused by electrical hazards? 2 0 obj b) By supplying GFCIs, or ground-fault circuit interrupters Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. 1. 0000420887 00000 n 0000005734 00000 n 1.Is firmly connected endobj 4. 0000013716 00000 n D 600v. Looking for NFPA 70E Certification? 182 0 obj <> endobj xref 182 41 0000000016 00000 n If you are touching any grounded material while using a power tool d.A power tool, A GFCI is designed to: The NEC C. Suggestions 1.Cuts d. Match the outlet prongs to the extension cord. 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). 0000024814 00000 n 0000001861 00000 n 0000068035 00000 n specifically addresses electrical protective devices. Select the correct answer and then click DONE. 1.A source of electrical current to flow. 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. Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. Question 1: Which of the following is a danger of electricity? Which of the following can be caused by exposure to an arc flash? =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR Select the correct answer and then click DONE. (A) Shotgun sticks. 4.Flex 2. Arc Flash. Contact utilities for buried power line locations. 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. 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. d.Water, Other electrical hazards in the workplace include: Question 2: Which of the following are ways employers must protect their employees on the workplace? (E) a, b, and c. 2. a.Your thumb. 3. Using multi-receptacle boxes designed to be. 3. Intentionally creating a low-resistance path that connects to the earth. 12 months C. 6 months D. Never Q23. 0000004921 00000 n 5.Twitch, Electrical shock may result in: When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. 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). Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. 4.No, because he does not need to use an extension cord. <> Frequently inspect electrical systems to insure that the path to ground is continuous. c. No, because the electricity is needed on a long-term basis. 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. Bob is asked to repair some overhead wiring, requiring the use a ladder. . A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. 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.