Automatically increasing the priority or attention given to an incomplete work order the older it becomes. The concept of aging is that an older work order should get higher attention than a similar work order only recently written. This practice may help a crew with low productivity, but hinder a crew with already high productivity. The former crew might increase its productivity to include the aged work order. The latter crew might have to drop a more serious work order to accommodate the aged, though less important, work order.

Amount of identified work on work orders either by number of work orders or work hours.

Standing work orders not specifying specific work but allowing the collection of work hours for time accounting.

Standard hours by which maintenance personnel might be paid regardless of actual hours spent.

Tagging or locking out the necessary valves or devices surrounding equipment to be worked on so that the equipment is safe. Also may involve draining or otherwise making equipment ready to be maintained.

Computerized maintenance management system.

A file made for a specific piece of equipment rather than for a system or group of equipment. Also called a minifile to emphasize its size relative to a system file.

An area with limited access and potential respiratory hazard requiring a special permit to enter.

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