The maintenance, repair, upgradation, and overhaul of plants and machinery constitute a comprehensive strategy to sustain operational efficiency, extend the lifespan of equipment, and incorporate technological advancements. This multifaceted process involves routine maintenance activities to prevent wear and tear, immediate repairs to address identified issues, strategic upgrades to enhance performance, and overhauls for comprehensive refurbishment.

In the maintenance phase, regular inspections and preventive measures are undertaken to identify and rectify minor issues before they escalate. This includes lubrication, cleaning, and routine checks to ensure the optimal functioning of machinery. The repair phase is activated when unexpected faults or failures occur, requiring immediate attention to minimize downtime and maintain productivity levels.