Abstract
During lifecycle of chemical plants, various changes of raw materials, products, operation and/or process structure are performed during the plant life cycle in order to cope with the economic environment. However, it may lead to a leak, a fire, an explosion accident if the operating conditions after the change do not satisfy the mechanical integrity of the plant, and the management of change becomes indispensable. The changemanagement is classified into tow; management of changes and process hazard analysis (PHA), and many incidents are taking place for insufficiency of PHA. In this study, applying HAZOP record for PHA in change management is proposed. The HAZOP record protocol is defined, and, the performance of PHA is demonstrated.
