Reference no: EM132924908

Intermediate-Volume Systems  

• Output fall between the standardized-type output of high-volume systems and the make-to-order output of job shops.
• Output rates are insufficient to warrant continuous production - Rather, it is more economical   to produce intermittently
• Work centers periodically shift from one product to another.   

Intermediate-Volume Systems 

• Three basic issues: 
• Run size of jobs 
• The timing of jobs 
• The sequence in which jobs will be produced  
• Important considerations -
• Setup cost 
• Usage is not always as smooth as assumed in the economic lot size model 
• Alternative scheduling approach 
• Base production on a master schedule developed from customer orders and forecasted demand    

Low-Volume Systems 

• Job shop scheduling 
• Scheduling for low-volume systems with many variations in requirements 
• Make-to-order products 
• Processing requirements 
• Material requirements 
• Processing time 
• Processing sequence and steps 
• A complex scheduling environment 
• It is impossible to establish firm schedules until actual job orders are received 

Low-Volume Systems: Loading 

• Loading 
• the assignment of jobs to processing center 
• the process of assigning work to limited resources 
• Gantt chart 
• Used as a visual aid for loading and scheduling purposes 
• Purpose of the Gantt chart is to organize and visually display the actual or intended use of resources in a time framework 
• Managers may use the charts for trial-and-error schedule development to get an idea of what different arrangements would involve 
• Loading Approaches 
• Infinite loading 
• Jobs are assigned to workstations without regard to the capacity of the work center. 
• Finite loading 
• Jobs are assigned to work centers taking into account the work center capacity and job processing times. 

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