- Reliability engineering is the process of evaluating how long a system and its individual components can be operated safely before they must be taken out of service for maintenance or replacement. Knowing the reliability of a piece of equipment is important in planning its installation and maintenance. For Example, a piece of equipment that will require frequent maintenance should be readily accessible, both to operating personnel who may be responsible for isolating and preparing the equipment for maintenance, and to maintenance personnel and their equipment. High or frequent maintenance requirement might suggest the need or substitution of equipment better suited to the operating conditions. High maintenance equipment may also need to have standby units or bypasses installed to maintain continuity of operations, an call for an adequate stock of spare parts to allow timely repair. The same reasoning applies to equipment that must be taken out of service for inspections or testing as part of a preventive maintenance program.
- Reference: CCPS(1989) Guidelines for Technical Management of Chemical Process Safety