Routine maintenance

Routine maintenance is scheduled work performed at fixed calendar or running-hour intervals to keep equipment in working order before it fails, distinct from breakdown or corrective maintenance. On a ship it is driven by the planned maintenance system, which raises jobs from manufacturer-recommended intervals: lubrication, filter and zinc-anode changes, valve overhauls, and tests of safety equipment. The ISM Code requires a maintenance regime for the ship and its equipment, with critical equipment identified and its failure consequences addressed. Records of routine maintenance are checked at internal audits, class surveys, and port state control inspections.