Chapter: Mechanical : Maintenance Engineering : Maintenance Policies and Preventive Maintenance
Maintenance Job Priority System
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 maintenance
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