Operating a crane in close proximity to overhead power lines.

OSHA interpretation letter responding to a memorandum about crane operation within 10 feet of overhead power lines, stating that rubber insulating equipment per 29 CFR 1910.137 may serve as a compliance guide for barriers under the exception to 1926.550(a)(15) when hard direct contact is not likely, while other barriers such as plastic guards per ASTM F968 are required if direct impact is…