1) Production Activity Control (PAC) concerns the execution of material plans. [Back end]
• Activities that fall partly or completely within the realm of Production Activity Control:
Shop-floor Scheduling and Control (SFC)
Vendor scheduling and Follow-up
Order, Release and Purchasing ( procurement)
In purchasing, procurement is professional activity where info networks, relationships, terms and conditions are established with vendor companies outside of Pac.
2) MPC System Linkages:
• If insufficient capacity is provided, no SFC will be able to decrease backlogs, improve delivery and improve output. But with over capacity, and SFC will work.
Find the proper execution systems with vendors and suppliers. This can be difficult so just get results that properly hit MPS & customers
• Formal systems for shop-floor control (SFC) are largely unnecessary under JIT
3) MRP & PAC functions
• Revise due dates and quantities for schedules receipts so correct priorities are maintained.
• Have control and follow up systems must keep each order lined up with its due date; despite moving dates overall MPC will be supported.
• Helps with SFC and vendor follow systems to material and capacity planning. Feedback of:
Status info - where things are, notification of operational completions, count verifications, order close out and disposition and accounting data.
Warning signals – flag inadequacies in materials and capacity plans
4) JIT effect on PAC:
• Formal SFC is unnecessary under JIT; Shop order paperwork isn’t maintained.
• Order release through kanbans or other pull system
• Limited work-in-process inventories
• Detailed scheduling is not needed – workers know the routine
• No data collection or monitoring requirements–only raw material and finished goods inventories
5) The Company Environment
• The primary PAC objective is managing material flows to meet MPC plans
Firm