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It is important to note that NFPA 70E is a . a.Supply power for tools or equipment on a temporary or short-term basis. The contact lasts for 5 seconds before someone is able to shut off the power. 0000055319 00000 n
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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. a.311 0000004208 00000 n
he most common shock-related injuries are: c. Inductive objects 0000004793 00000 n
OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. The following references aid in recognizing hazards associated with electrical work. endobj
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Muscular contraction and nerve damage occur; death likely. Electric current cannot exist without an unbroken path to and from the conductor. 1.Is faulty 4. When he grasped the handle of the bucket to pull it down, the crane cable came into contact with the overhead line. 0000002385 00000 n
Electricity will form a "path" or "loop". 4.Flex Quiz Question 9: Conductor insulation must be approved for the ___________ of use? 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. You should? Look for overhead power lines and buried power line indicators. 0000028595 00000 n
1.The humidity of the environment Draw a line from the item on the left that corresponds to the match on the right. 2. Electrical Safety Multiple Choice Questions and Answers for competitive exams. 3.ack of ground fault protection. Select the correct answer and then click DONE. A. wrap tape around the damaged spot to prevent electrical shocks. Besides personal bodily injury, what other electrical hazards can be found in the workplace? [. Using tools and equipment that can contact power lines increases the risk. 2 0 obj
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. d. Power outlets, ________ are anything that can transmit electrical current. As she is adding in the chemicals, her hand touches the motor and it becomes energized. 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. 0000005042 00000 n
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Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. Explosion. 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. Take any defective equipment out of service. Select the correct answer and then click DONE. 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$]r**-I!o66PqK.z
"*D Regarding hand protection employers should: A. 2.Grease A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV
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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. Check your employee's electrical safety knowledge through an electrical safety quiz. 1. hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l How fast would the ball be moving at the moment of release? View Best Practices with Power Lines Quiz OSHA 30.docx from OSHA 30 at Columbia Southern University. OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. The victim was totally deaf in one ear and suffered diminished hearing in the other. Explosion Which of the following are insulators of electricity? 0000108920 00000 n
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b.Rod Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 4. OSHA 10 General Industry Test Answer Key WALKING. Find the volume of the parallelepiped determined by the vertices (1,1,1),(4,7,2) . endobj
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As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. Does the fall qualify as an electrical accident? 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. 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. Quiz Question 2: Which is acceptable when using powdered tools? Use only equipment that is approved to meet OSHA standards. 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. Select the correct answer and then click DONE. xb```VVF A10p,``Pp`hhdpn``r`L:[
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-If current passes through the body near the heart or brain. True. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. d.Metal, Over half of all deaths caused by electricity result from contact with ________. 0000012360 00000 n
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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. 3.Loose nuts This may damage your equipment and cause employee injuries. 1.When you are using electricity near water Is the west coast of Africa a plate boundary? The small electrical current enters his body through his left leg. The victim provided a path to ground and was electrocuted. The factors that determine the severity of an electrical injury include: When does electricity become hazardous to humans? A 120v. What was Latoya's first mistake? d.A power tool, A GFCI is designed to: Overview. The modification of the plug was not an intended use or prescribed by the manufacturer. 2. Is not painted over D. Have an ANSI sticker and an expiration date. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. 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 . Apply a warning tag to any defective tool and do not use it until the problem has been corrected. 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! 0000004274 00000 n
Examples of Equipment That Can Contact Power Lines. High humidity specifically addresses electrical protective devices. 0000001731 00000 n
What is the output of the program in Exercise 17, if first = 26 and second = 8? 2.Grounding Electrocution. The accident site was wet; also, humidity was high and the victim was sweating. She finds several available in the shop. (B) Switch sticks. c.falls. 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. b.10 feet 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. b.burns. hazard or that their employer is not following OSHA's rules. d.Alert workers of any water in the area, GFCI is an acronym for: Examples Of Electrical Hazards. 1. Electricity becomes hazardous when it takes an unintended path to complete the ________. c. Extend the reach of the power tool. Select the correct answer and then click DONE. What three things must be present for a current to flow through a conductor. True. 2.Using extension cords or electrical tools properly. A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. Hand-operated metal shifting ropes or cables of electric elevators. Select the correct answer and then click DONE. A) 120v . 0000005734 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. b.30,000 volts c.Power lines Select the choices that accurately define the common electrical term. 0000013999 00000 n
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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. 3.The length of time the body is in contact with electricity [, Use all equipment according to the manufacturer's instructions. [, Do not modify cords or use them incorrectly. a.Yes, because the electrical shock caused the fall. Select the correct answer and then click DONE. 0000002195 00000 n
Unless you know otherwise, assume that overhead lines are energized. She has an older drill with a steel housing and a 3-prong plug. 0000005716 00000 n
The following are electrical hazards: Shock. 0000002122 00000 n
Which of the following are conductor of electricity? b) Staples D. Communicate the hazard to the crew and subs, use signs and bar E. Both C and D Q22. -Severe skin burns. Quiz Question 1: Which of the following is not a category of electrical burns? Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. 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. 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. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. q>NmnLNmb$"Iyx1bD9.~Ll. 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. 0000006866 00000 n
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Before using the equipment, be sure that the ground wire: Apparently, his hand contracted and he was "locked" to the saw. Use only extension cords that are marked with a designation code for hard or extra-hard usage. a.Standing in water 0000420277 00000 n
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Question 4: When a worker receives an electric shock, first aid must start within ___________ minutes. xYmo -ER/&@[D,_! Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. a.Ground Fault Circuit Insulator a. Gaseous matter Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. Select the correct answer and then click on DONE. Do not remove ground prongs from cord- and plug-connected equipment or extension cords. stream
The most dangerous place to use electrical equipment is? Safe operation of hand and portable powered tools and other hand-held equipment. The victim signaled the operator of the crane to extend the boom and lower the hoist cable. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. 0000003254 00000 n
Is split Question 1: Which of the following is a danger of electricity? 3.Draped over equipment. 3.Clear d) All of the above. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. Which of the following factors determine how severe an electrical injury might be? <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
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3.Something that causes current to flow through the . 3.When you are using portable power tools When inspecting extension cords, look for: Death is probable. 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). The ________ keeps the electricity on its intended path through the conductor. Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. Which of these can be used as insulating live-line tools for electrical protection. 1.Clench 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. Question 1: Each year, approximately __________ workers suffer from electricity related injuries. Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. Ground all power supply systems, electrical circuits, and electrical equipment. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. To avoid injury or death, you must understand and recognize hazards. Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). (b) The same reaction can also be classified as a redox reaction. Select the correct answer and then click DONE. <<7628BB2D46738F42B2FC6393656F4718>]>>
2.Yes, because he is using a portable power tool. Water He may have dropped the extension cord at the site and not heard the connector break. HWMo#7v#h>6,Z4- Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. 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. (A) Shotgun sticks. The auger then fell across the other worker, the 24-year-old victim. 30 days B. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. 0000002386 00000 n
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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. 0000011060 00000 n
2.Loss of muscle control 3. 2.Loose bolts Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. Burns. 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. 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: Select the correct answer and then click DONE. Quiz Question 7: Which is not an insulator? OSHA 29 CFR 1910, Subpart S . This is action is also known as creating or completing an electrical circuit. 3 OSHA requires the testing of a volt meter after a voltage test on voltage above_____. Lockout/tagout procedures. OSHA requires the testing of a volt meter after a voltage test on voltage above_____. 0000001672 00000 n
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4.Must be replaced, Always use a GFCI: 1. 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.
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: Underground electrical hazards are: A. Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. 2. b.Shut off power within five minutes of the imbalance 4.The amount of current, An electrical burn may affect: 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. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB and more. _5JKy. View Answer Answer: 600v 4 . Which of the following part of you body can burn if you come in contact with electricity? 4.Broken. [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. Best Practices with Power Lines 1. 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. 1.Missing or broken path to ground. A fan connected to a 120-volt electrical system via an extension cord provided ventilation for a worker performing a chipping operation from an aluminum stepladder. <>>>
2.Placed along a wall. d. heart attacks. Which of the following are insulators of electricity? This caused him to fall from the ladder and land in a puddle of water, still holding the saw. The NEC C. Suggestions When used on the moon? endobj
d.Add more outlets. 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. 0000002403 00000 n
4.Cardiac arrest 0000000016 00000 n
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b.The tool's power cord. a.Electricity Wearing a baseball cap 2.Something to transport the electrical current -- A conductor. 0000420564 00000 n
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Then answer the questions below. 1.Cuts 0000427811 00000 n
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4. Question 3: A/an ____________ is a unit of measurement for electrical resistance. a.Conductive objects 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. Equipment used in manner prescribed. 0000002876 00000 n
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. 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. %PDF-1.4
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4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: -Falls. b.Not wearing insulating shoes or boots when she was handling electrical equipment 3.Cramp 3 0 obj
Most of the hydrides of Group 1A and Group 2A metals are ionic. Other protective measures include guarding or insulating the lines. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. c.911 There were no eyewitnesses to the accident, but evidence suggests that while the victim was handling the damaged and energized extension cord, he provided a "path to ground" and was electrocuted. 2.Complete Remove cords from receptacles by pulling on the plugs, not the cords. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. Supply power for tools or equipment on a long-term basis. 0000004965 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. *Effects are for voltages less than about 600 volts. b.Metal When current travels through your body - Definition of electric shock. Effective means of controlling power line hazards include: The ground wire was not attached on the male end of the cord's plug. <>
Use only extension cords that are 3-wire type. b. Provide a safe path to earth ground for electricity. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. BE SAFE! Intentionally creating a low-resistance path that connects to the earth. c.Guaranteed Fault Circuit Interrupter x_HSqnwmky54YLzeStJi#
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Which of the following can be the result of electric shock? Select the correct answer and then click DONE. 2.Using an aluminum ladder when the possibility exists for contact with electricity. 182 0 obj
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c. No, because the electricity is needed on a long-term basis. lex has set up a mobile engine testing station in the maintenance area. The length of time the body is in the circuit, in contact with electricity - Factor determining the severity of an electrical . If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. -Glass. d.Adapter, What is a GFCI? Working with electricity can be dangerous. Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. d. Match the outlet prongs to the extension cord. 0000001861 00000 n
using a 30-amp breaker in a system with 15- or 20-amp receptacles. 1.A source of electrical current to flow. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. 0000003771 00000 n
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Select the correct answer and then click DONE. -Damage to internal organs. 0000024814 00000 n
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De-energizing c) Age 3. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. Which group would be more accurate when used in an accelerating spaceship? _.9u'2G_0 Ue]e"x5|Y 0000001646 00000 n
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Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires d.Water, Other electrical hazards in the workplace include: s\A0W+ Select the correct answer and then click DONE.
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