electrical hazard

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# Occupational Safety and Health Administration (cont.) ## 1910.333(a)(1) (cont.) integral part of a continuous industrial process in a chemical plant that would otherwise need to be completely shut down in order to permit work on one circuit or piece of equipment. Note 3: Work on or near deenergized parts is covered by paragraph (b) of this section. ## 1910.333(a)(2) Energized parts. If the exposed live parts are not deenergized (i.e., for reasons of increased or additional hazards or infeasibility), other safety-related work practices shall be used to protect employees who may be exposed to the electrical hazards involved. Such work practices shall protect employees against contact with energized circuit parts directly with any part of their body or indirectly through some other conductive object. The work practices that are used shall be suitable for the conditions under which the work is to be performed and for the voltage level of the exposed electric conductors or circuit parts. Specific work practice requirements are detailed in paragraph (c) of this section. ## 1910.333(b) Working on or near exposed deenergized parts- ## 1910.333(b)(1) Application. This paragraph applies to work on exposed deenergized parts or near enough to them to expose the employee to any electrical hazard they present. Conductors and parts of electric equipment that have been deenergized but have not been locked out or tagged in accordance with paragraph (b) of this section shall be treated as energized parts, and paragraph (c) of this section applies to work on or near them. Note 2: Lockout and tagging procedures that comply with paragraphs (c) through (f) of $ 1910.147 will also be deemed to comply with paragraph (b)(2) of this section provided that: (1) The procedures address the electrical safety hazards covered by this Subpart; and ## 1910.333(b)(2) Lockout and tagging. While any employee is exposed to contact with parts of fixed electric equipment or circuits which hav…

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U.S. DEPARTMENT OF LABOR # Occupational Safety and Health Administration - Part Number: 1910 - Part Number - Title: Occupational Safety and Health Standards - Subpart: 1910 Subpart S - Subpart Title: Electrical Standard - Number: - 1910.333 - Title: Selection and use of work practices. - GPO Source: e-CFR 1910.333(a) General. Safety-related work practices shall be employed to prevent electric shock or other injuries resulting from either direct or indirect electrical contacts, when work is performed near or on equipment or circuits which are or may be energized. The specific safety-related work practices shall be consistent with the nature and extent of the associated electrical hazards. ## 1910.333(a)(1) Deenergized parts. Live parts to which an employee may be exposed shall be deenergized before the employee works on or near them, unless the employer can demonstrate that deenergizing introduces additional or increased hazards or is infeasible due to equipment design or operational limitations. Live parts that operate at less than 50 volts to ground need not be deenergized if there will be no increased exposure to electrical burns or to explosion due to electric arcs. Note 1: Examples of increased or additional hazards include interruption of life support equipment, deactivation of emergency alarm systems, shutdown of hazardous location ventilation equipment, or removal of illumination for an area. Note 2: Examples of work that may be performed on or near energized circuit parts because of infeasibility due to equipment design or operational limitations include testing of electric circuits that can only be performed with the circuit energized and work on circuits that form an Submit Feedback

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# WAC 296-24-975 Selection and use of work practices. (cont.) Chapter 296-24 WAC General Safety and Health Standards Part L Electrical (I) The employer ensures that the employee who applied the lock or tag is not available at the workplace; and (II) The employer ensures that the employee is aware that the lock or tag has been removed before he or she resumes work at that workplace. (D) You must provide a visual determination that all employees are clear of the circuits and equipment. [Statutory Authority: RCW 49.17.010, 040, .050, and .060. 15-24-100 (Order 15-04), $ 296-24-975, filed 12/01/2015, effective 01/05/2016 Statutory Authority: RCW 49.17.010, .040, .050, and .060. 04-15-105 (Order 03-12), $ 296-24-975, filed 07/20/04, effective 11/01/04. [Statutory Authority: Chapter 49.17 RCW. 94-15-096 (Order 94-07), 296-24-975, filed 7/20/94, effective 9/20/94; 91-24-017 (Order 91-07), 296-24-975, filed 11/22/91, effective 12/24/91.] ## WAC 296-24-980 Safeguards for personnel protection. (1) Use of protective equipment. (a) Personal protective equipment. (i) You must provide employees working in areas where there are potential electrical hazards with electrical protective equipment that is appropriate for the specific parts of the body to be protected and for the work to be performed, and you must ensure that they use such protective equipment. - Note: Personal protective equipment requirements are contained in chapter 296-24 WAC Part L, and WAC [redacted identifier]. (ii) You must maintain protective equipment in a safe, reliable condition and you must periodically inspect or test it, as required by chapter 296-24 WAC Part L, and WAC [redacted identifier]. (iii) If the insulating capability of protective equipment may be subject to damage during use, you must protect the insulating material. (For example, an outer covering of leather is sometimes used for the protection of rubber insulating material.) (iv) Employees must wear nonconductiv…

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# ONTARIO REGULATION 213/91 CONSTRUCTION PROJECTS (cont.) ## ELECTRICAL HAZARDS (cont.) 3. The employer has determined from the maintenance record that the work on the equipment, installation or conductor can be performed safely without disconnecting it. 4. Before beginning the work, the worker has verified that paragraphs 1, 2 and 3 have been complied with. O. Reg. 627/05, S. 7. 192. All tools, devices and equipment, including personal protective equipment, that are used for working on or near energized exposed parts of electrical equipment, installations or conductors shall be designed, tested, maintained and used so as to provide adequate protection to workers. O. Reg. 627/05, S. 7. 193. (1) A worker who may be exposed to the hazard of electrical shock or burn while performing work shall use rubber gloves, (a) that are adequate to protect him or her against electrical shock and burn; (b) that have been tested and certified in accordance with subsection (2), if applicable; and (c) that have been air tested and visually inspected for damage and adequacy immediately before each use. O. Reg. 627/05, S. 7. (2) Rubber gloves rated for use with voltages above 5,000 volts AC shall be tested and certified to ensure that they can withstand the voltages for which they are rated, (a) at least once every three months, if they are in service; (b) at least once every six months, if they are not in service. O. Reg. 627/05, S. 7. (3) Rubber gloves shall be worn with adequate leather protectors and shall not be worn inside out. O. Reg. 627/05, S. 7. (4) Leather protectors shall be visually inspected for damage and adequacy immediately before each use. O. Reg. 627/05, S. 7. (5) Rubber gloves or leather protectors that are damaged or not adequate to protect workers from electrical shock and burn shall not be used. O. Reg. 627/05, S. 7. (6) Workers shall be trained in the proper use, care and storage of rubber gloves and leather protectors. O. Reg. 627/05, S. …

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# Welding - Electrical Safety (cont.) ## Completion of Circuit through the Body (cont.) Live wire Incoming power One wire is connected to the ground Ground Completion of an electric circuit through ground # What precautions should I take to prevent an electrical shock? - Make sure all cables are in good condition with no bare insulation or frayed wires to minimize the extent of live parts. - When changing the welding electrode, there is a danger of shock equal to the no-load voltage output of the welding machine. The shock can be lethal under certain conditions (such as the welding current path, amount of electric current passing though the body, and working conditions (e.g., hot, moist)). - Be careful to not touch the body, especially the face or neck, when repositioning the electrode. - Protect cables from vehicular traffic or other hazards so the cables are not damaged, cut, or pinched. - Make sure that the rod holder is insulated. - Do not replace the welding electrode with a bare hand, or with a wet welding glove. - Always keep the hands and the body dry during a welding operation. - Avoid standing in water, on wet surfaces, or working with wet hands or wearing sweaty garments. - Do not dip energized (hot) electrode holders in water. Avoid direct contact with the live parts of welding equipment and the workpiece. - Ground the work or metal to be welded to a good electrical ground. Always insulate yourself from the work and ground. - Wear proper protective equipment, such as rubber boots and rubber pads, if performing arc welding in wet or high humidity conditions. Wear rubber gloves under the welding gloves. - If the welding operation must be done on steel or other conductive material, use an insulating mat under the operator. - Place the welding transformer in a close vicinity. In case of an incident, the transformer can be switched off quickly to cut off the power source. Welding - Electrical Safety CCOHS

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# What should I do if I think I am too close to overhead power lines? Do not work close to power lines. Recommended distances vary by jurisdiction and/or utility companies. Check with both your jurisdiction and electrical utility company when working, driving, parking, or storing materials closer than 15 m (49 feet) to overhead power lines. - If you must be close to power lines, you must first call your electrical utility company which will assist you. - If your vehicle comes into contact with a power line: - DO NOT get out of your vehicle. - Call 911 and your local utility service for help. - Wait for the electrical utility to come and they will tell you when it is safe to get out of your vehicle. - Never try to rescue another person if you are not trained to do so. - If you must leave the vehicle (e.g., your vehicle catches on fire), open the car door and prepare to jump by placing your feet on the door frame. Keep your arms close to your body. Jump with your feet together. Never touch the vehicle or equipment and the ground at the same time. - Move away by shuffling your feet. - Shuffle at least 10 metres away from your vehicle before you take a normal step. - Do not enter an electrical power substation or other marked areas. ## What are some general safety tips for working with or near electricity? - Inspect portable cord-and-plug connected equipment, extension cords, power bars, charging stations, and electrical fittings for damage or wear before each use. Repair or replace damaged equipment immediately. - Always tape extension cords to walls or floors when necessary. Do not use nails and staples as they can damage the cords and cause fire and shocks. - Use extension cords or equipment that is rated for the level of amperage or wattage that you are using. - Always use the correct size fuse. Replacing a fuse with one of a larger size can cause excessive currents in the wiring and possibly start a fire. Electrical Safety - Basic I…

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# Electrical Safety - Basic Information (cont.) ## What do I need to know about electricity? (cont.) Note: Static electricity is the accumulation of charge on surfaces as a result of contact and friction with another surface. This contact/friction causes an accumulation of electrons on one surface and a deficiency of electrons on the other surface. The OSH Answers document on How Do I Work Safely - Static Electricity. has more information. Electric current cannot exist without an unbroken path to and from the conductor. Electricity will form a "path" or "loop". 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. This action is also known as creating or completing an electrical circuit. ## What kinds of injuries result from electrical currents? People are injured when they become part of the electrical circuit. Humans are more conductive than the earth (the ground we stand on) which means if there is no other easy path, electricity will try to flow through our bodies. There are four main types of injuries: electrocution (fatal), electric shock, burns, and secondary injuries (e.g., from a fall). These injuries can happen in various ways: - Direct contact with exposed energized conductors or circuit parts. When electrical current travels through our bodies, it can interfere with the normal electrical signals between the brain and our muscles (e.g., the heart may stop beating properly, breathing may stop, or muscles may spasm). It can also cause burns to internal tissues along the path of the electric current while passing through the body. Burns to external tissues at the entry and exit points of the current can also occur. - When the electricity arcs (jumps, or "arcs") from an exposed energized conductor or circuit part (e.g., overhead power lines) through a gas (such as air) to a person who is grounded (that would provide an alternative route to the ground for the el…

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# 1910.335 SAFEGUARDS FOR PERSONNEL PROTECTION 1910.335(a) Use of protective equipment. 1910.335(a)(1) Personal protective equipment. 1910.335(a)(1)(i) Employees working in areas where there are potential electrical hazards shall be provided with, and shall use, electrical protective equipment that is appropriate for the specific parts of the body to be protected and for the work to be performed. Note: Personal protective equipment requirements are contained in subpart I of this part. 1910.335(a)(1)(ii) Protective equipment shall be maintained in a safe, reliable condition and shall be periodically inspected or tested, as required by 1910.137. 1910.335(a)(1)(iii) If the insulating capability of protective equipment may be subject to damage during use, the insulating material shall be protected. (For example, an outer covering of leather is sometimes used for the protection of rubber insulating material.) 1910.335(a)(1)(iv) Employees shall wear nonconductive head protection wherever there is a danger of head injury from electric shock or burns due to contact with exposed energized parts. 1910.335(a)(1)(v) Employees shall wear protective equipment for the eyes or face wherever there is danger of injury to the eyes or face from electric arcs or flashes or from flying objects resulting from electrical explosion. ## 1910.335(a)(2) General protective equipment and tools. - 1910.335(a)(2)(i) When working near exposed energized conductors or circuit parts, each employee shall use insulated tools or handling equipment if the tools or handling equipment might make contact with such conductors or parts. If the insulating capability of insulated tools or handling equipment is subject to damage, the insulating material shall be protected. 1910.335(a)(2)(i)(A) Fuse handling equipment, insulated for the circuit voltage, shall be used to remove or install fuses when the fuse terminals are energized. 1910.335(a)(2)(i)(B) Ropes and handlines used near exposed energized parts sha…

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# What should I do if I think I am too close to overhead power lines? (cont.) ## What are some general safety tips for working with or near electricity? (cont.) - Be aware that unusually warm or hot outlets or cords may be a sign that unsafe wiring conditions exist. Unplug any cords or extension cords from these outlets and do not use them until a qualified electrician has checked the wiring. - Always use ladders made with non-conductive side rails (e.g., fibreglass) when working with or near electricity or power lines. - Place halogen lights away from combustible materials such as cloths or curtains. Halogen lamps can become very hot and may be a fire hazard. - The risk of electric shock is greater in areas that are wet or damp. Install Ground Fault Circuit Interrupters (GFCIs) as they will interrupt the electrical circuit before a current sufficient to cause death or serious injury occurs. - Use a portable in-line Ground Fault Circuit Interrupter (GFCI) if you are not certain that the receptacle you are plugging your extension cord into is GFCI protected. - Make sure that exposed receptacle boxes are made of non-conductive materials. - Know where the panel and circuit breakers are located in case of an emergency. - Label all circuit breakers and fuse boxes clearly. Each switch should be positively identified as to which outlet or appliance it is for. - Do not use outlets or cords that have exposed wiring. - Do not use portable cord-and-plug connected power tools if the guards are removed. - Do not block access to panels and circuit breakers, or fuse boxes. - Do not touch a person or electrical apparatus in the event of an electrical incident. Always disconnect the power source first. - Make sure electrical tools and equipment have a certification marking from an accredited agency accepted by your jurisdiction (e.g., UL, ULC, CSA, ETL). Be careful when purchasing equipment from another country or online, as they may not be approved. - Make sure…