1.Overall Manufacturing Planning Hierarchical Planning Contd

PPC Class Notes-Chapter11.Overall Manufacturing PlanningHierarchical Planning ContdDemand ManagementForecastingOrder PromisingOrder ProcessingOrder EntrySpare Parts

PPC Class Notes-Chapter11.Overall Manufacturing PlanningHierarchical Planning ContdProduction PlanningMonthly Plans for Product Families

Master Production Scheduling (MPS)Weekly Plans for Individual ProductsMPS must sum up to Production PlanPPC Class Notes-Chapter1PP MPS Relation

PPC Class Notes-Chapter1ExampleProduct Family: MarkersProducts: Red, Blue, Green Marker

Note:Usually a period is one month and a subperiod is one week (s=4).

PPC Class Notes-Chapter1Example (Contd)

PPC Class Notes-Chapter11.Overall Manufacturing PlanningHierarchical Planning ContdResource PlanningLong-Range Capacity RequirementsNumber of MachinesNumber of EmployeesOvertimeShiftsPlantsPPC Class Notes-Chapter11.Overall Manufacturing PlanningHierarchical Planning ContdRough-Cut Capacity PlanningCapacity Requirements for Master ProductionSchedulingOverall FactorCapacity BillsResource ProfilesPPC Class Notes-Chapter12.Materials & Capacity PlanningHierarchical Planning ContdMaterials PlanningProduction rates can be used in simpler manufacturing systems.Materials Requirements Planning (MRP) can be used in more complex systems. MRP determines time-phased requirements (period-by-period) for all purchased and manufactured parts such as raw materials, components, parts, subassemblies, etc.PPC Class Notes-Chapter12.Materials & Capacity PlanningHierarchical Planning ContdDetailed Capacity PlanningLabor Hours RequiredMachine Capacity Required

In an MRP environment, this task is accomplished by using the Capacity Requirements Planning (CRP) technique.nk s

( ( MPSijkt = PPkt k=1,2,3,..,f; t=1,2,3,..,T

i=1 j=1

s

number of subperiods in a period

nk

number of products in family k

MPSijktmaster production schedule for product i of family k in subperiod j of period t

PPkt

production plan for family k in period t

f

number of families

T

number of periods

Production Plan

Months

12

Marker Family100000120000

Master Production Schedule

ProductsWeeks

12341234

Red1010101015151515

Blue1010101010101010

Green55555555