Machinery Component Maintenance and Repair Maintenance work order planning and scheduling continues to be a largely manual set of procedures throughout the hydrocarbon processing industry. There are, however, several systems which support daily work planning and scheduling. One such system is a skills inventory file that provides daily information on available personnel for use in manual planning and scheduling of maintenance work. Another is the computer-based file containing standard maintenance procedures that can be retrieved for preparation of work orders and in estimating manpower time requirements. Additionally, other maintenance-related systems, such as preventivemaintenance systems and inspection-support systems, may generate work orders. | 20 Machinery Component Maintenance and Repair Maintenance work order planning and scheduling continues to be a largely manual set of procedures throughout the hydrocarbon processing industry. There are however several systems which support daily work planning and scheduling. One such system is a skills inventory file that provides daily information on available personnel for use in manual planning and scheduling of maintenance work. Another is the computer-based file containing standard maintenance procedures that can be retrieved for preparation of work orders and in estimating manpower time requirements. Additionally other maintenance-related systems such as preventivemaintenance systems and inspection-support systems may generate work orders for inclusion in daily maintenance schedules. Work order planning and scheduling also is supported by materials and parts inventory systems. The actual computer-based scheduling of daily maintenance manpower resources however has remained an elusive goal. Recent systems work has aimed at scheduling shop work where forecasting work requirements is easier than forecasting field work. Incentives for Computer Systems The primary incentive for design and implementation of maintenance-related support systems is the potential for reducing maintenance-related costs. The cost of keeping hydrocarbon processing plants running includes maintenance expenditures. These typically range from to percent of the estimated plant replacement value. Justification of Systems Although process industry companies generally agree that maintenancesupport systems are a viable means of reducing maintenance costs there is no general agreement on the size of benefits available or the source of these benefits. For this reason there are probably as many ways to justify computer installation as there are computer applications 1. Reduced clerical effort. 2. Improved utilization of maintenance work force. 3. Improved equipment reliability. 4. Reduced .
