ABSTRACT
Planned maintenance should establish and maintain optimal equipment and process conditions; it should be efficient and cost-effective. In a total productive maintenance (TPM) development program, planned maintenance is deliberate, methodical activity of building and continuously improving such a maintenance system. Equipment management in process industry is profoundly influenced by its unique types of equipment, the nature of its process and equipment failures, and the skill levels and roles of its maintenance personnel. Equipment failures and process problems in process industries can be classified into five broad categories: equipment failures or process problems that cause shutdown, quality abnormalities, unit-consumption abnormalities, capacity reductions, and safety and environmental problems. An efficient planned maintenance program combines time-based maintenance (TBM), condition-based maintenance (CBM), and breakdown maintenance (BM) as rationally as possible. The goal of TPM is to strengthen company's basic constitution by achieving zero defects, zero failures, and zero accidents, and eliminating every kind of loss. The most important of these is zero failures.
