1. What are Priority Rules
Priority rules provide guidelines for the sequence in which jobs should be worked.
The rules generally involve the assumption that job setup cost and time is independent of
processing times. In using this rules, job processing times and due dates are important pieces
of information. Job times usually include setup and processing times. Due dates may be the
result of delivery times promised to customers, MRP processing, or managerial decisions. The rules are especially applicable for processs-focussed facilities such as clinics, print shop and
manufacturing job shops. Priority Rules try to minimise completion time, number of jobs in the
system, and job lateness, while maximising facility utilisation.
The following standard measures of schedule performance are used to evaluate
Meeting due dates
of customers or downstream operations.