Ch. 4: Master Production Scheduling

Master Production Scheduling

• MPS

• Actionable plan

• Specifics

  • What

  • How many

  • Finished goods will be produced

• Good used of resources, making delivery promises, tradeoffs and strategic objectives

• Anticipated schedule of demand

Bill of Materials

• BOM

• Usually part numbers

• Product specifications

Input

• Beginning inventory

• Sales forecast for end item

• : labour

Output

• Production per period needs to meet customer demand

• Trade off between costs and product availability

Aggregate Plan

• Overall

• : January, produce 100 tractors of all models

Disaggregate Plam

• More specific

• Total 8 weeks, 4 weeks per month

• 2 models

• Demand for A: 40%, B: 60%

Time-Phased MPS Record

• Record item

• Forecast demand

• Lead time

MPS Record Initial Factors

• On hand delivery

• Safety stock

• MPS quantity and

Final Assembly Schedule

• FAS

• States the send of end products to be built over a time period

• Used with 2 level MPS coordinate component production

• No new orders

Superbill

• Large combinatorial number of end items

• Focus on options than end items

• Rep MPS units in smaller number of super units

• Super end item

• Reduce end items but very sophisticated

Covering Sets

• Uses end items in MPS, doesn’t include all

• MRP logic

• Quantity adjusted to cover all expected subassemblies and components

Master Scheduler

• Provide deliver promising dates for incoming orders

• Eval impact of:

  • Top down inputs

  • Bottom up input

• Revise master schedule