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The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. a.Electricity When inspecting extension cords, look for: Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. He may have dropped the extension cord at the site and not heard the connector break. Electrical Safety Assessment Quiz Answers | ISHN The modification of the plug was not an intended use or prescribed by the manufacturer. a. OSHA 29 CFR 1910.147 . Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. Ajay needs to use a dewatering pump to drain standing water on a construction site. Is split xref
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A) Identify; Castigate; C) Evaluate; D) Modify; 3. 0000014257 00000 n
-Severe skin burns. A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. OSHA 30 Construction Final Test Answer Key - Studylib One hand drill was not grounded, and the other had no safety plate. 5 feet A 56-year-old construction laborer was removing forms from a concrete wall poured several days earlier. d. heart attacks. [29 CFR 1926.416(a)(1)]. a.A small current A fault occurred, and with no grounding and no GFCI protection, the worker was electrocuted. No Ground-Fault Circuit Interrupters (GFCIs): A journeyman HVAC worker was installing metal duct work using a double-insulated drill connected to a drop light cord. 2.Yes, because he is using a portable power tool. b.Shut off power within five minutes of the imbalance <>>>
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. The factors that determine the severity of an electrical injury include: Extension cords are used to: 1.Pain The auger then fell across the other worker, the 24-year-old victim. 0000004444 00000 n
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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. Electrical Safety Multiple Choice Questions(MCQs) & Answers - gkseries Then answer the questions below. Electrical Safety Quiz-Test Your Electrical Safety Knowledge 2.Loss of muscle control Muscular contraction and nerve damage occur; death likely. Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. 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). Before using the equipment, be sure that the ground wire: %PDF-1.4
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A) 120v . Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? 0000013716 00000 n
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A. wrap tape around the damaged spot to prevent electrical shocks. Select the correct answer and then click DONE. This may damage your equipment and cause employee injuries. x_HSqnwmky54YLzeStJi#
TZObFT*.#BQF/Q Select the correct answer and then click DONE. The following are electrical hazards: Shock. Equipment used in manner prescribed. 0000001646 00000 n
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a.Ground Fault Circuit Insulator -Grounding= a conductive connection to the earth which acts as a protective measure.
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cGPzNY*oS(m%q{Agp Best Practices with Power Lines 1. 3. 0000006866 00000 n
Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. 0000108653 00000 n
4. 3. The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. 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. s\A0W+ On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. 1.Is faulty c.Wood endobj
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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. 3. which of the following are electrical hazards osha quizlet 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. Select the correct answer and then click on DONE. stream
a.Extension cords A 120v. 0000108920 00000 n
What is the primary purpose of properly grounding equipment? Draw a line from the item on the left that corresponds to the match on the right. Which of the following are insulators of electricity? Extension cords had poor splices, no grounds, and reversed polarity. Use only equipment that is approved to meet OSHA standards. Look for overhead power lines and buried power line indicators. Identify the oxidizing and reducing agents. he most common shock-related injuries are: After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. c.Touching the motor Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. The most dangerous place to use electrical equipment is? Working with electricity can be dangerous. Using cords or tools with worn insulation or exposed wires. 1. 0000005632 00000 n
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Provides information about the hazards that electrical workers may experience as a part of their jobs. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. Power was supplied through two extension cords from a nearby residence. 0000002403 00000 n
Potential hazards of electricity are preventable if you do which of the following listed below? Select the correct answer and then click DONE. 0
Outlets Fire Electrical current travels through insulated ________. 4 0 obj
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What is the minimum clearance distance you must maintain from the power lines? As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. Contact utilities for buried power line locations. ZR)!=w|; @uT C0? Do not remove ground prongs from cord- and plug-connected equipment or extension cords. OSHA 10 - Exit Routes, Emergency Action Plans, The Analysis and Design of Linear Circuits, Albert J. Rosa, Gregory J. Toussaint, Roland E. Thomas. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. 4.The amount of current, An electrical burn may affect: She finds several available in the shop. Out of several possible scenarios, the most likely was contact between the exposed wires of an extension cord and a screw that protruded from the receptacle, which had its face plate removed. ( D. near other electrical equipment. 0000004921 00000 n
Additionally, the ground prong was missing and there was no GFCI protection. )KL3C?e%Y92$,]^)kmR/!8\
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2.Loose screws 1.Is firmly connected b.10 feet 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. 1. 1452 25
Quiz Question 3: Power cords can be damaged by which of the following? 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. 0000017336 00000 n
The small electrical current enters his body through his left leg. 0000002479 00000 n
Select the correct answer and then click DONE. 2 0 obj
1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. 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. 4 0 obj
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PDF Working Safely with Electricity - Occupational Safety and Health 0000004793 00000 n
d.Add more outlets. 3.The length of time the body is in contact with electricity Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. -If current passes through the body near the heart or brain. (b) The same reaction can also be classified as a redox reaction. The laborer, who was wearing leather gloves, received an electric shock and dropped the wire reinforcement, which fell across the power line and simultaneously contacted the metal rail of the scaffold, energizing the entire scaffold. . d. 20 feet. PDF OSHA Safety - Electrical Safety - Red Vector (See NFPA 70E-2021 Article 130 and OSHA subpart S part . Question 1: Which of the following is a danger of electricity? Electrical Contractors Industry. 0000001896 00000 n
When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. Remove cords from receptacles by pulling on the plugs, not the cords. b) By supplying GFCIs, or ground-fault circuit interrupters 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 . endobj
Bob is asked to repair some overhead wiring, requiring the use a ladder.
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