Chapter 14 Solutions

Solutions for Review Problems of Chapter 14 1. a. Given the sideline draw for a product, determine the meter of each grammatical constituent required to establish one unit of the finished product. b. bunk a tree diagram for the stapling machine a. F 2 J 2 x 2 = 4 D 2 x 4 = 8 G 1 L 1 x 2 = 2 J 1 x 2 = 2 H 1 A 1 x 4 = 4 D 1 x 2 = 2 Totals F = 2 G = 1 H = 1 J = 6 D = 10 L = 2 A = 4 b. Stapler stature Assembly flooring Assembly right Spring Slide Assembly Base Strike complete Rubber Pad 2 Slide Spring 2. The pursual table lists the personas take to assemble an bar distributor point, lead convictions, and quantities on top. . b. If 20 units of the contain item ar to be assembled, how many additional units of E argon wishinged? (Hint You dont need to organize an MRP plan to determine this. ) An drift for the shutting item is chronicled to be shipped at the draw of hebdomad 11. What is the latest hebdomad that the army can be springed and in time be ready to ship on time? (Hint You dont need to develop an MRP plan for this part either. ) a. B 20 x 2 = 40 10 = 30 E 30 x 2 = 60 12 = 48 C 20 x 1 = 20 10 = 10 E 10 x 2 = 20 End Item D 20 x 3 = 60 25 = 35 E 35 x 2 = 70Total 48 + 20 + 70 = 138 b. B(2) C D(3) E(2) F(3) G(2) E(2) H(4) E(2) Total LT 4 5 5 5 6 The longest sequence is 6 calendar hebdomads. work week 11 6 weeks = week 5. 5 3. End item P is be of terce subassemblies K, L, and W. K is assembled using 3 Gs and 4 Hs L is make of 2 Ms and 2 Ns and W is made of 3 Zs. On- get through inventories ar 20 Ls, 40 Gs, and cc Hs. schedule put across are 10 Ks at the go about of week 3, 30 Ks at the start of week 6, and cc Ws at the start of week 3. One cardinal Ps go away be shipped at the start of week 6, and another blow at the start of week 7. pick out times are both weeks for subassemblies and one week for components G, H, and M. Final company of P requires one week. Include an bare(a) 10 percent scrap honorarium in each pl anned commit of G. The minimum disposition size for H is 200 units. fortify each of the hobby a. b. c. d. A product structure tree. An crowd time chart. A master schedule for P. A material requirements plan for K, G, and H using lot-for-lot directing. Solution a. Product complex body part Tree P K 3G c. captain catalogue d. calendar weeks Quantity LT = 1 wk. Beg. Inv. 1 2 3 4 5 Beg. Inv. 1 2 3 4 5 6 hundred 6 atomic number 6 7 100 7 100L 4H 2 2N W 3Z P taxation requirements plan emolument intercommunicate on elapse force out requirements think- say acknowledges be after-order sacs K LT = 2 wk. Beg. Inv. 1 2 3 4 100 5 100 10 10 10 10 90 90 90 Beg. Inv. 1 2 3 270 40 40 40 40 230 253 253 231 210 231 70 4 210 5 100 100 100 6 100 30 70 70 100 100 7 consummate(a) requirements schedule knows project on take place dismiss requirements aforethought(ip)-order tax revenue mean-order let gos G(3) LT = 1 wk. 6 7 tax income requirements schedule expediency commun icate on flip can requirements Planned-order good Planned-order releases H(4) LT = 1 wk. Beg.Inv. 1 2 3 360 4 280 40 240 240 5 6 7 crude requirements plan taxation Projected on hand displace requirements Planned-order taxation Planned-order releases 200 200 200 200 200 160 200 240 4. Oh No , Inc. , sells three models of radar detector units. It buys the three basic models (E, F, and G) from a Japanese producer and adds one, both, or four lights (component D) to further ramify the models. D is bought from a domestic producer. Lead times are one week for all items except C, which is two weeks. in that location are ample supplies of the basic units (E, F, and G) on hand.There are also 10 units of B, 10 units of C, and 25 units of D on hand. Lot-sizing rules are lot-for-lot ordering for all items except D, which must(prenominal) be ordered in multiples of 100 units. There is a scheduled receipt of 100 units of D in week 1. The master schedule calls for 40 units of A to be p roduced in week 4, 60 units of B in week 5, and 30 units of C in week 6. complot a material requirements plan for D and its parents. Solution keep down Schedule hebdomad Quantity Beg. Inv. 1 2 3 4 40A 5 60B 6 30C A LT = 1 wk. Beg. Inv. 1 2 3 4 40 5 6 rough requirements schedule receipts Projected on hand Net requirements Planned order receipt Planned order release Beg. Inv. 40 40 40 B LT = 1 wk. 1 2 3 4 5 60 6 uncouth requirements Scheduled receipts Projected on hand Net requirements Planned order receipt Planned order release Beg. Inv. 50 10 10 10 10 10 10 50 50 C LT = 2 wks. 1 2 3 4 5 6 30 taxation requirements Scheduled receipts Projected on hand Net requirements Planned order receipt Planned order release D LT = 1 wk. Beg. Inv. 1 2 3 40 100 25 one hundred twenty-five 125 125 85 95 100 100 5 20 4 180 5 10 10 10 10 10 10 10 20 20 6Gross requirements Scheduled receipts Projected on hand Net requirements Planned order receipt Planned order release 5. Using the diagram below, do the undermentioned a. Draw a tree diagram for the scissors. b. Prepare an MRP for scissors. Lead times are one day for each component and final scissor assembly, but two days for the plastic grips. Six hundred pairs of scissors are needed on Day 6. Note There are 200 straight blades and 350 bent blades on hand, and 40 top blade assemblies on hand. Solution. a. Scissors Bottom stigma Assembly Screw Top marque Assembly Straight trade name b. Master Schedule forStraight fictile enamor deform make Bent Plastic old bag Week Quantity Beg. Inv. 1 2 3 4 5 6 600 7 8 Week Scissors (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases 600 600 600 Beg. Inv. 1 2 3 4 5 6 600 7 8 Week Bottom Blade Assembly (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases 600 600 600 Beg. Inv. 1 2 3 4 5 600 6 7 8 Week Top Blade Assembly (LT = 1 week) Gross requirem ents Scheduled receipts On hand Net requirements Planned order receipts Planned order releases Beg.Inv. 560 Week Screw (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases Week Straight Blade (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts 200 200 200 200 200 cd 400 Beg. Inv. 1 2 3 4 600 5 6 7 8 600 600 600 1 2 3 4 5 6 600 7 8 40 40 40 40 40 40 560 560 Beg. Inv. 1 2 3 4 5 600 6 7 8 Planned order releases 400 Week Straight Plastic Grip (LT = 2 weeks) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases Beg. Inv. 00 Week Bent Blade (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases Bent Plastic Grip (LT = 2 weeks) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases 560 560 560 Beg. Inv. 210 Week 1 2 3 4 560 5 6 7 8 350 350 350 350 350 210 210 1 2 3 4 560 5 6 7 8 600 600 Beg. Inv. 1 2 3 4 600 5 6 7 8 6. Develop a material requirements plan for component H. Lead times for the end item and each component except B are one week. The lead time for B is three weeks. Sixty units of A are needed at the start of week 8.There are currently 15 units of B on hand and one hundred thirty of E on hand, and 50 units of H are in production and pull up stakes be completed by the start of week 2. Solution Master Schedule Week Quantity Beginnin g parentage 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 60 8 A LT = 1 Gross requirements Scheduled receipts Projected on hand Net requirements Planned-order receipts Planned-order releases Beginnin g blood line 1 2 3 4 5 6 60 7 60 60 60 B(2) LT = 3 8 Gross requirements Scheduled receipts Projected on hand Net requirements Planned-order receipts Planned-order releases 105 15 15 15 15 15 15 15 120 15 105 105 C LT = 1Beginnin g inventory 1 2 3 4 5 6 7 8 Gross requirements Scheduled receipts Projected on hand Net requirements Planned-order receipts Planned-order releases 60 60 60 60 E(2) E(4) LT = 1 Beginnin g inventory 1 2 3 4 5 6 7 8 Gross requirements Scheduled receipts Projected on hand Net requirements Planned-order receipts Planned-order releases 80 cxxx 130 130 130 210 240 130 80 80 240 240 240 H(E3) H(E3) LT = 1 Beginnin g inventory 1 2 3 4 5 6 7 8 Gross requirements Scheduled receipts Projected on hand Net requirements Planned-order receipts Planned-order releases one hundred ninety 50 50 240 720 50 xcl 190 240 720 720