KINAR13h, KINLO13h. The marking period is, for the most part, 15 working days, otherwise it s the following date:

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1 Materialplanering och Styrning 7.5 ECTS Ladokcode: The exam is given to: 41I29M KININ13h, KININ13h1, KINAF13h-pgrp3, KINAF13h-pgrp4, KINAR13h, KINLO13h ExamCode: Date of exam: Time: 14:00 18:00 Means of assistance: Calculator Total amount of point on exam:: 35 Requirements for grading: SB: Pass=14, Grade 4=21 and Grade 5=28 Additional information: Next re-exam date: See The marking period is, for the most part, 15 working days, otherwise it s the following date: Important! Do not forget to write the ExamCode on each paper you hand in. Good Luck! Examiner: Agnes Andersson-Wänström Questions during exam: Håkan Svensson

2 Question 1 (4m) The MRP logic describes a planning loop; explain the activities included and what needs to be considered. Include in the explanation what data in-put is required to run the MRP-loop. Include an illustration or diagram in your explanation, if needed. Fråga 1 (4p) MRP logiken beskriver en planeringsloop; förklara vilka aktiviteter som ingår och vad man tar hänsyn till. Visa även vilka indata som behövs för att man skall kunna köra sin MRP-loop. Använd gärna en bild i din förklaring. Question 2 (5m) Explain PAC (production activity control) by describing the operative planning level. Include a picture in your answer, including the operative level and the connection to the tactical level. What information is exchanged between levels and what is done in the operative planning? Fråga 2 (5p) Förklara PAC (production activity control) genom att beskriva den operativa planeringsnivån. Inkludera en bild av hur den operativa nivån kopplas till den taktiska. Vilken information utbyts mellan nivåerna och vad gör man på den operativa nivån. Question 3 (5m) What is levelling? Why is this so important for JIT production? How can a level schedule be applied? What effect does levelling have on the JIT excecution and how does this appear in the strategic and tactical levels? Fråga 3 (5p) Vad är utjämning? Varför är utjämning så viktigt för JIT-produktion? Vilka effekter fås I flödet och hur påverkar utjämning den strategiska och den operativa nivån? Question 4 (5m) Describe how a sales and operations planning process can look like in a small and medium sized enterprise? Fråga 4 (5p) Beskriv hur en sälj- och verksamhetsplanerings process kan se ut i ett litet till medelstort företag? Question 5 / Fråga 5 (6m / 6p)) Explain the following concepts / Beskriv följande koncept a) Backscheduling b) Forecast c) Planning horizon d) Rate-based e) Level strategy f) Rough cut capacity planning 1

3 Question 6 (5 marks) The company Customer First AB are using a make to order strategy and product A is their main product. The forecast for product A, the accepted customer orders and the master production schedule is shown below. The company presently has 80 units on hand and a fixed master production schedule quantity of 60 units is used. The company is using a demand time fence of 3 weeks and a planning time fence of 7 weeks. Table 1: Forecast, customer orders and master production schedule of product A Forecast product A Accepted customer orders Master production schedule Week Quantity Week Quantity Week Quantity a) Help the master production scheduler to fill in the master schedule record on the next page, by using the forecast, the customer orders and the planned production of product A. Fill in the available and available to promise, etc. b) The following customer orders arrive to the sales department and they ask you to decide which of the customer orders that can be accepted. Treat the customer orders one by one in the order they arrive, starting with order no 1 and continue with order no 2 and so on. Splitting the orders is not allowed and no backlog should be created. If you accept one order take that in consideration when handling the next order. State clearly which of the below orders can be accepted and motivate your answer with the record created in question a. 1. A new customer order of 10 units in week 2 2. A new customer order of 30 units in week 1 3. A new customer order of 35 units in week 6 4. A new customer order of 40 units in week 10 2

4 Question 7 (5 marks) A company is producing a product A and the product structure is shown in the figure bellow. The master production schedule of product A is given in the tables bellow as well as the information on inventory levels, lot-sizing technique, safety stock policies and schedule receipts. a) Given this information and following the product structure diagram for product A, fill out the MRP records (inventory status files) for item B and C (5m). Product A Item B (1 required) Item C Item D Item C Item E Product A Master Production Schedule Week 1 Week 2 Week 3 Week 4 Week 5 Week Schedule Receipts Inventory status Safety stock Safety time Lead time Lot sizing technique Item B Item C Yes in w 1 Yes 240 in w week Fixed order quantity week 1 week Lot for lot 3

5 Page number Question: Exam code:: Week Forecast Orders Available Available to promise MPS 4

6 Page number Question: Exam code: Item: week Gross requirements Scheduled receipts Projected available balance Planned order release Item: week Gross requirements Scheduled receipts Projected available balance Planned order release 5