Maintenance Job Priority System
The maintenance job priority system has a tremendous impact on maintenance scheduling. Priorities are established to ensure that the most critical and needed work is scheduled first. The development of a priority system should be well coordinated with operations staffs who commonly assign a higher priority to maintenance work than warranted. This tendency puts stress on the maintenance resources and might lead to less than optimal utilization of resources. Also, the priority system should be dynamic and must be updated periodically to reflect changes in operation or maintenance strategies. Priority systems typically include three to ten levels of priority. Most organizations adopt four or three level priorities. Table 11.1 provides classification of the priority level and candidate jobs to be in each class as identified by Duffuaa et al. (1999).
Table 11.1. Priorities of maintenance work
Code Name : Time frame work : Type of work
Emergency : Work should start : Work that has an immediate effect on safety, environment, quality,
Urgent : Work should start within : Work that is likely to have an impact on safety, environment, quality,
Normal : Work should start within : Work that is likely to impact the
Scheduled : As scheduled : Preventive and maintenancePostponable : Work should start when resources are available or at : Work that does not have an immediate impact on safety, health,