Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. 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+ D. Have an ANSI sticker and an expiration date. Supply power for tools or equipment on a long-term basis. The NEC C. Suggestions a.20,000 volts When inspecting extension cords, look for: Is not broken, Question Text: Electrical tools should be grounded with a(n)________. Overview. c.40,000 volts 0000010155 00000 n 0000055319 00000 n 2.Flooding 0000001814 00000 n When it completes a circuit through the body. 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. Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. 0000004273 00000 n If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. De-energizing d.Add more outlets. 0000001672 00000 n Potential hazards of electricity are preventable if you: Electricity must always travel in a(n) ________, ________ circuit. a. Gaseous matter 2.Placed along a wall. 128 0 obj <> endobj xref 128 26 0000000016 00000 n The workers administered CPR to the victim, but to no avail. 0000005734 00000 n . True. Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. 1452 25 Provide a safe path to earth ground for electricity. 0000002479 00000 n 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. 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 5 feet Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. <<7628BB2D46738F42B2FC6393656F4718>]>> Electrical Hazards Electrical hazards can be found in nearly every roofing work site. 0000004208 00000 n What is the most common, non-fatal, electrical shock-related injury? 0000068035 00000 n OSHA Safety and Health Topics Page. a.Yes, as it is a mobile engine testing station. Using multi-receptacle boxes designed to be. The victim provided a path to ground and was electrocuted. Fire Freeze Continually audit cords on-site. Frequently inspect electrical systems to insure that the path to ground is continuous. 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. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! According to NFPA 70E, job briefings must be held for those employees that will be working on or near live parts operating at ______ or more. qnde>9!.,T2 :hw5 #OaPxkx=y7]J-yv*'H$jmVCq$ sx:R2$9SY+D!!LJ:n+.\#Hu~2VI O? 0000003715 00000 n 4.Cardiac arrest trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream specifically addresses electrical protective devices. Working with electricity can be dangerous. 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. 3. startxref Regarding hand protection employers should: A. 3.Tears On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. _.9u'2G_0 Ue]e"x5|Y The auger then fell across the other worker, the 24-year-old victim. 0000028595 00000 n Using cords or tools with worn insulation or exposed wires. 0000005406 00000 n 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. Select the correct answer and then click DONE. When does electricity become hazardous to humans? b.30,000 volts Determine duration, frequency, degree of exposure to hazards and physical stress. 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. She finds several available in the shop. In addition to contact with power lines, the top electrical hazards include: 1476 0 obj <>stream The small electrical current enters his body through his left leg. 0000002122 00000 n Is not painted over d. Match the outlet prongs to the extension cord. You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. Question 2: Which of the following are ways employers must protect their employees on the workplace? 1. 5. lex has set up a mobile engine testing station in the maintenance area. The floor is covered in water and she is barefoot. Select the correct answer and then click DONE. 0000420564 00000 n 0000004946 00000 n Contact utilities for buried power line locations. SCENARIO: You encounter a co-worker on a residential remodeling job. 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. b) Staples 1) The _____ created the Occupational Safety and Health Administration (OSHA) to set and enforce protective workplace safety and health standards. Use only extension cords that are marked with a designation code for hard or extra-hard usage. 3.ack of ground fault protection. Select the correct answer and then click DONE. Electrical hazards are life threatening incidents that could happen due to electricity. 4. Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? One handle has a deadman's switch. Select the correct answer and then click DONE. Hand-operated metal shifting ropes or cables of electric elevators. a.Supply power for tools or equipment on a temporary or short-term basis. Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. -Grounding= a conductive connection to the earth which acts as a protective measure. How fast would the ball be moving at the moment of release? Electrical current travels through insulated ________. 0000002733 00000 n Arc Flash. To avoid injury or death, you must understand and recognize hazards. D. near other electrical equipment. Electrical safety requirements necessary for the practical safeguarding of employees in the workplace. [, Do not modify cords or use them incorrectly. a.Your thumb. 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. 0000422244 00000 n 4.Must be replaced, Always use a GFCI: =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR If you are touching any grounded material while using a power tool 2 0 obj Explosion Additionally, the ground prongs were missing from the two cords. When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. 1 0 obj 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. a.Extension cords 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. <> Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. Use only extension cords that are 3-wire type. 0000009628 00000 n 0000021516 00000 n b. The auger has a one-quarter horsepower motor encased in a metal housing with two handles. How will she choose the correct cord? 0000057373 00000 n 0000000016 00000 n Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. ( 1. c.falls. A) 120v . 1.Missing or broken path to ground. HWMo#7v#h>6,Z4- 0000007464 00000 n Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. 0000108920 00000 n Isolating, Power lines may be located underground. 0000421627 00000 n 1.Pain Which of the following factors determine how severe an electrical injury might be? c. Inductive objects Carly needs to use an extension cord with her corded nail gun. Quiz Question 2: Which is acceptable when using powdered tools? 0000015549 00000 n Potential hazards of electricity are preventable if you do which of the following listed below? Match the length from job to outlet. Work performed on an electrical system within reaching distance of energized components is_____work. % 30 days B. 182 0 obj <> endobj xref 182 41 0000000016 00000 n 3.Body tissue 0000003603 00000 n What type of burns are the result of current flowing through and exiting the body? Post warning signs. c) Age As she is adding in the chemicals, her hand touches the motor and it becomes energized. b.Electrical tools Using a dry wood ladder when the possibility exists for contact with electricity. 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. Lockout/tagout procedures. Ground all exposed metal parts of equipment. Explosion. c.Wood 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. 3 0 obj Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. If a defective power tool gives you an electric shock, how might your muscles react? Does the fall qualify as an electrical accident? Know glove capability VS hazard anticipated (exposure to chemicals, heat, or flames). 0000002195 00000 n 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. An employee was texturing a wall using an air compressor. b.burns. The victim collapsed into the lake and sank 4-1/2 feet to the bottom. True. 0000013999 00000 n As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. To be safe, you must think about your job and plan for hazards. 2.Grounding A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. 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 4.Broken. -Conductor= permits the free flow of electricity. 1.Clench Question 4: Which of the following is a type of burn caused by electrical hazards? a.Conductive objects 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 Water Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. Death. You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. Select the correct answer and then click DONE. Safe operation of hand and portable powered tools and other hand-held equipment. Noise, : ________ or heavy perspiration can cause electricity to take an unintended path. 4.Circuit breakers, When inspecting power tools, look for: % 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: 3. Is split 1.Fingernails B. d.The body of the power tool. 3.Loss of eyesight After the wall was poured, one driver cleaned the loading chute of his cement truck with a water hose mounted on the truck. a) Door or window edges As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream Explain the purpose and use of the MyPlate symbol. OSHA 29 CFR 1910.147 . The ground wire was not attached on the male end of the cord's plug. <> 1 0 obj <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> ZR)!=w|; @uT C0? Wearing a baseball cap Quiz Question 7: Which is not an insulator? c) Establish and enact an assured equipment grounding conductor program (AEGCP) c.Gasoline Select the correct answer and then click on DONE. (b) The same reaction can also be classified as a redox reaction. <>>> %PDF-1.5 [Power Tools]. Electricity becomes hazardous when it takes an unintended path to complete the ________. -Damage to internal organs. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. Extension cords may become a trip hazard when: Best Practices with Power Lines 1. a.Two-prong plug Reportedly, he was shocked throughout the morning, and he had replaced one of the extension cords in an effort to eliminate the shocks. A) Identify; Castigate; C) Evaluate; D) Modify; 3. (See NFPA 70E-2021 Article 130 and OSHA subpart S part . d.Metal, Over half of all deaths caused by electricity result from contact with ________. Yes, because he will be using electricity near water. OSHA 29 CFR 1910, Subpart P . stream 0000005520 00000 n 3.Vapor 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). C 277v. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. d) All of the above. 0000003413 00000 n 0000000816 00000 n OSHA: Air Monitoring & Medical Surveillance, 5 ANO - RETOMANDO ARTIGO, SUBSTANTIVO E ADJE. Even when the power system is properly grounded, electrical equipment can instantly change from safe to hazardous because of extreme conditions and rough treatment. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. trailer 0000008392 00000 n 2. 0000004444 00000 n 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. endobj 0000012360 00000 n 0000003254 00000 n (3,2,1), (5,4,3). Visually inspect all electrical equipment before use. You should? Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. Looking for NFPA 70E Certification? a.311 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. Which of the following part of you body can burn if you come in contact with electricity?