MHI SOP-COM-019-Overhead Power LInes 2019 Issued: 2002-02-26 Revised: 2016-12-08 Revised: 2019-11-15 Page 3 of 4 Tool Box Meeting Pre Trip Inspection Establish Table 2 Insulated Lines

•Warning signs are posted. Use the “Take Ten” tool if needed. All power lines shall be presumed energized unless the utility owner or operator confirms the power line has been, and continues to be, de-energized and visibly grounded at the worksite. Any damage found must be repaired before the cord or tool is used. b. Reciprocating, rotating, and moving parts of equipment shall be guarded if exposed to ... - All hydraulic or pneumatic tools that are used on or around energized lines or equipment shall •Wood or fiberglass ladders, not metal ladders, are used. •Special training and personal protective equipment is provided to power line workers. Hand and Power Tools Safety 1) General ... guards must be functional. Protecting Against Induced Voltage: Safe Distances from Energized Power Lines. Stay back at least 10 m (33 ft.) from a fallen power line, exposed underground power line, or any object in contact with the line. The fluid used in hydraulic power tools must be an approved fire-resistant fluid and must retain its operating characteristics at the most extreme temperatures to which it will be exposed. Trainees must work under supervision. When pulling over energized lines, activate “one-shot” operation to prevent breakers from automatically reclosing after any fault. The fluid used in hydraulic power tools must be an approved fire-resistant fluid and must retain its operating characteristics at the most extreme temperatures to which it will be exposed. Persons trained in first-aid, including cardiopulmonary resuscitation (CPR), shall be available when employees are performing work on or associated with exposed lines or equipment energized … If the machinery you are operating contacts an energized line, move it away from the line to break contact. Keep at least 20 feet away from pole-to-pole power lines at all times. If high voltage lines are not de-energized, visibly grounded, or protected by insulating barriers, equipment operators must maintain a minimum distance of 10 feet between their equipment and the electrical distribution or transmission lines (29 CFR 1926.550(a)(15)(i)) If you can’t do this, stay put in the machine until help arrives. When making or breaking connections with energized circuits, workers must keep loose conductors away from exposed live parts. •Power lines are assumed to be energized. The cords can either be replaced or shortened to remove the damaged portion. Safe Operating Practice Overhead Power Lines Workers must be trained/competent and aware of associated hazards. NFPA 70E Arc Flash and Shock Hazard Boundaries.
A metal ladder is lightweight, but it is also conductive and should not be used around electricity. If installing new lines parallel to existing, live lines, workers must anticipate and control any induced voltage from these energized lines’ electromagnetic fields. The risks around exposed live equipment include not only electrical shock, but also arc flashes and flames. If the power line cannot be de-energized for the duration of the work, another option is to move the line the minimum clearance distance it can be maintained.
A distance at least ten feet away from the power lines is maintained.

Per 29 CFR 1926.451(f)(6), scaffolds cannot be erected, used, dismantled, altered or moved closer than the distances stated below in Table 2 when near energized power lines. DOSH Directive 18.70 Checklist Working Around Overhead Energized Transit System Power Supply (OETSPS) Lines below 800 Volts DC DOSH OETSPS Checklist Page 5 of 6 Instructions: The worksite supervisor at the beginning of each job, and each 30 days thereafter as long as work continues, must send a completed Checklist to L&I for review and signature prior to the start of work. "Training and education are key to increasing awareness about electrical hazards in construction," says OSHA's Bruce Swanson, director of the agency's construction directorate. Workers must not use metal ladders, wire-reinforced wooden ladders, and other long tools or equipment, such as gutters or scaffolding, when working on energized electrical equipment or near energized electrical equipment if there is a possibility of contacting bare energized components. Ground-fault protection must be provided at construction sites to guard against electrical shock.

That’s why they’re mounted well out of harm’s reach or buried in the ground. As a result of accidents in the workplace related to arc flash, the National Fire Protection Association (NFPA) has developed specific approach boundaries designed to protect employees while working on or near energized equipment. Power lines are not insulated in the same way as your household wiring. Employers must not allow their workers to work near any part of an electrical circuit UNLESS the circuit is de-energized (shut off) and grounded, or guarded in such a way that it cannot be contacted. exposed energized parts" and who, at a minimum, has been trained in and is ... Conductive items of jewelry or clothing must not be worn around electricity unless rendered non-conductive by covering, wrapping, or ... Electrical equipment and lines must be assumed to be energized until proved to be deenergized.


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