Maintenance, repair and operations - choose a jigsaw puzzle to solve

The technical meaning of maintenance involves operational and functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure , and supporting utilities in industrial, business , governmental, and residential installations. Over time , this has come to often include both scheduled and preventive maintenance as cost-effective practices to keep equipment ready for operation at the utilization stage of a system lifecycle. The marine transportation, offshore structures, industrial plant and facility management industries depend on maintenance, repair and overhaul (MRO) including scheduled or preventive paint maintenance programmes to maintain and restore coatings applied to steel in environments subject to attack from erosion, corrosion and environmental pollution .