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It is advisable to perform the work so there is no possibility of the crane, load line, or load becoming a conductive path. [See Fig. 22-3.3.2.1-1, illus- trations (a) and (b).] Cranes shall not be used to handle materials stored under electric power lines unless any combination of boom, load, load line, or machine com- ponent cannot enter the prohibited zone. Operating articulating boom cranes where they can become electri- fied with electric power lines is not recommended, unless there is no less hazardous way to perform the job. Any overhead line shall be considered to be an ener- gized line, unless and until the person owning such line or the electrical utility authorities, indicate that it is not an energized line.
Crane operators shall not rely on the coverings of lines for their protection. Four conditions to consider when operating an articulating boom crane near electric asme bpvc section viii power lines are the following: (a) power lines de-energized and grounded as in para. 22-3.3.2.2 (b) power lines energized, crane operating less than the erected/fully extended boom length away as in para. 22-3.3.2.3 [see Fig. 22-3.3.2.1-1, illustration (c)] (c) power lines energized, crane within prohibited zone as in para. 22-3.3.2.4 (d) crane in transit, no load, and boom lowered as in para. 22-3.2.3.5 22-3.3.2.2 Crane Operation Near De-Energized and Grounded Electric Power Lines. This is the preferred condition under which the operation can be performed. The hazard of w3.org injury or death due to electrocution has been removed. The following steps shall be taken to ensure de-energization of the power lines: (a) The power company or owner of the power lines shall de-energize the lines. (b) The lines shall be visibly grounded to avoid electri- cal feedback and appropriately marked at job site location. (c) The necessity for grounding of wiring that has a manufacturer's applied coating of insulation and is a 600-V service or less shall be determined by electrical utilities or the owner of the power line. (d) A qualified representative of the owner of the lines or a designated representative of the electrical utility shall be on the site to ver
