4VAC25-40-350: Repairing machinery

Repairs or maintenance shall not be performed on machinery until the power is off and the machinery is blocked against motion, except where machinery motion is necessary to make adjustments. Energy sources, other than those related to electricity (which are covered under 4VAC25-40-2140 and 4VAC25-40-2150) or internal combustion (which are covered under 4VAC25-40-1685), which pose a hazard to miners, shall be tagged out and marked by a means that identifies the individuals doing the work, and locked out if practical, by each authorized person exposed to the hazard. Tags or locks shall be removed only by the persons who installed them or by an authorized person, after ensuring that affected persons are in the clear.