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MPCS. Capacity Planning Techniques. Capacity Planning: Role in MPC Systems RoughCut Capacity Planning Capacity Bill Technique Resource Profiles Technique Capacity Requirements Planning Advantages/Limitations. Capacity Planning in the MPC System. Capacity Bill an example.
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Capacity Planning Techniques • Capacity Planning: Role in MPC Systems • RoughCut Capacity Planning • Capacity Bill Technique • Resource Profiles Technique • Capacity Requirements Planning • Advantages/Limitations
Capacity Billan example Period 1 2 3 4 MPS 450 300 625 890 Dept.CapacityHrs/Unit of End Product A 130 .2 B 160 .3 The Pdt is fabricated in several depts but the 2 depts are potential bottlenecks Prepare a Capacity Bill for the given MPS
Period: 1 2 3 4 MPS: 450 300 625 890 Capacity Requirements Capacity Capacity Dept1234Available (.2 hr/unit) A 90 60 125 178 130 hr (.3 hr/unit) B 135 90 188 267 160 hr Requires: MPS, setup time and run time information
Resource Profile Example Determine the capacity requirements in all work centers at ABC Ltd using MPS, resource profile, product structure, and LT information given below for product Z and all of its components. Period 12345 Product Z MPS 10 20 15 10 15 Product Z resource profile PartWork centerSetup hoursRun hours/unitPlanned Lead time Z 201 8.0 1.5 0 periods M 201 5.0 1.0 1 period N 202 3.0 2.0 1 period O 202 2.0 1.0 2 periods P 203 1.0 0.5 3 periods
Resource Profile I Reqd = MPS + Setup/Run Times from the Product Routing + LT
Capacity Requirements Planning estimate the capacity needs for next 5 periods in following depts Final Asbly Paint Shop Frame shop. Setup Operation Work CenterTimeRun time Mount assembly Final Assembly 2 hours 1.0 hours Fabricate H frame Frame Shop 3 hours 0.5 hours Paint surfaces Paint Shop 4 hours 0.4 hours
Capacity Requirements Planning (CRP) Example * In hours
Capacity Requirements Planning (CRP) Capacity Requirements Period Dept 1 2 3 4 5 6 H Mount Assy 17 22 22 22 22 0 H Frame 28.5 0 18 18 0 0 Painted Surface 24 24 24 24 0 0 Note: 28.5 = 3 + 0.5(15) + 3 + 0.5(30) Requires: Planned order and schedule receipt information from the MRP system, and setup and run times from the product routing file.
Capacity Planning Techniques Capacity Bills ProsCons Easy to use Doesn’t consider lead times, inventory Minimal computational information, or gross-to-netting requirements Consider product mix Less accurate Resource Profiles Easy to use Doesn’t consider inventory information Minimal computational or gross-to- netting requirements Considers lead times Less accurate Consider product mix Capacity Requirements Planning Considers: gross-to-netting, Requires MRP system, Time-phased Inventory information, records, Extensive computational lead times requirements More accurate Considers product mix