Bus%203750%20Chapter%2006%20MRP

Bus%203750%20Chapter%2006%20MRP - Three Inputs in MRP...

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1 Chapter 6 : Materials Requirements Planning By Bruce G. Ferrin and Duke Leingpibul Three Inputs in MRP • Master production schedule • Inventory Record • Bills of Materials 2 MPS & Inventory Records Period 1 2 3 4 Total D e m a n d 43 421 3 Gross Requirement 3 Inventory 2 1 Produce Bill of Materials (BOM)? Projected Available Balance Net Requirement Product Structure Tree Table Independent Demand Item 4 Legs (4) Ends (2) Sides (2) Top (1) Hardware Kit (1) Dependent Demand Items Variation of BOM (read your text) • Product Tree Format – Multi Level BOM – Single Level BOM – Multiple BOM Table Forma 5 • Table Format – Indented BOM – Summarized Parts List • More applied BOM: Planning Bill & Where-Used Report, Pegging Report Ex: Mutilevel Bill Table Legs (4) Ends (2) Sides (2) (1) Hardware Kit (1) 6 Screws (8) Washers (8) Tool Set (1) 1 table needs 4 legs 2 Ends 2 Sides 1 Top 1 Hardware kit 1x8 screws 1x8 washers 1x1 Tool Set
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2 Product Three Practice A B(2) C(2) D(1) B E(1) F(1) G(2) D x(1) y(2) E G(3) H(2) 7 1.Draw a product tree 2.How many Gs will be used to make one A? Product Tree Solution A D(1) A Î B Î E Î G 2 x 1 x 3 = 6 8 B (2) C(2) E(1) F(1) G(2) X(2) Y(1) G(3) H(2) Î B Î G 2 x 2 = 4 * * Lead Time & Order Size A LT = 1 week Order size : 1pieces 9 B(2) C (1) D(2) E(1) LT = 2 week LT = 1.5 week LT = 12 week LT = 1 week Order size : 50 pieces Order size : 20 pieces Order size : 100 pieces Order size : 200 pieces MPS & Inventory Records Period 1 2 3 4 Total D e m a n d 43 421 3 Gross Requirement 10 Inventory 2 1 Produce Projected Available Balance Net Requirement MRP+ Order size Period 1 2 3 4 Total 4 3 4 2 13 Inventory 2 1 Gross Requirement Available/Projected Available Balance 3 1 0 4 11 Net Requirement Planned Ordered Receipt Planned Ordered Release Order Size = 5 5 5 2 5 5 4 5 5 1 MRP Practice (LT & Lot Size) Period 1 2 3 4 Total Inventory 2 Gross Requirement Available/Projected Available Balance 12 Net Requirement
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Bus%203750%20Chapter%2006%20MRP - Three Inputs in MRP...

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