Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
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Chapter 11, Problem 19P
Prepare a master production
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A initially assume that Phi wants to minimize his inventory requirements. Assume that each order will be only for what is required for a single period. Calculate the net requirements and planned order releases for the gear boxes and input shafts. Assume that lot sizing is done using a lot-for-lot (L4L).
Gear box requirements
Week 1 2 3 4 5 6 7 8 9 10 11 12
Gross requirements
Scheduled receipts
Projected available balance
Net requirements
Planned order receipt
Planned order release
Input shaft requirements
Week 1 2 3 4 5 6 7 8 9 10 11 12
Gross requirements
Scheduled receipts
Projected available balance
Net requirements
Planned order receipt
Planned order release
For a given store demand in Week 5 is 375 and onhand inventory at the end of Week 4 is 450 If the manufacturing lead time for this particular item is two weeks then what will be the Store demand
Semans is a manufacturer that produces bracket assemblies. Demand for bracket assemblies (X) is 131 units. The following is
in indented form:
ITEM
DESCRIPTION
Bracket assembly
Wall board
USAGE
1
A
4
Hanger subassembly
Hanger casting
Ceramic knob
Rivet head screw
Metal tong
Plastic cap
E
G
2
Below is a table indicating current inventory levels:
Item
Inventory
A
B
E
G
23
18
55
25
200
170
1,100
90
b. What are the net requirements of each item in the MPS? (Leave no cells blank be certain to enter "0" wherever requirec
Item
Net Requirements
A
F
Nevt
Chapter 11 Solutions
Operations Management
Ch. 11 - What three levels of planning involve operations...Ch. 11 - What are the three phases of intermediate...Ch. 11 - Prob. 3DRQCh. 11 - Why is there a need for aggregate planning?Ch. 11 - What are the most common decision variables for...Ch. 11 - Prob. 6DRQCh. 11 - Briefly discuss the advantages and disadvantages...Ch. 11 - What are the primary advantages and limitations of...Ch. 11 - Briefly describe the planning techniques listed as...Ch. 11 - What are the inputs to master scheduling? What are...
Ch. 11 - Prob. 11DRQCh. 11 - What general trade-offs are involved in master...Ch. 11 - Who needs to interface with the master schedule...Ch. 11 - How has technology had an impact on master...Ch. 11 - Service operations often face more difficulty in...Ch. 11 - Name several behaviors related to aggregate...Ch. 11 - Compute the total cost for each aggregate plan...Ch. 11 - A manager would like to know the total cost of a...Ch. 11 - Determine the total cost for this plan given the...Ch. 11 - a. Given the following forecast and steady regular...Ch. 11 - Manager T. C. Downs of Plum Engines, a producer of...Ch. 11 - Manager Chris Channing of Fabric Mills, Inc., has...Ch. 11 - SummerFun. Inc., produces a variety of recreation...Ch. 11 - Nowjuice, Inc., produces Shakewell fruit juice. A...Ch. 11 - Wormwood, Ltd., produces a variety of furniture...Ch. 11 - Refer to Solved Problem 1. Prepare two additional...Ch. 11 - Refer to Solved Problem 1. Suppose another option...Ch. 11 - Prob. 12PCh. 11 - Prob. 13PCh. 11 - Prob. 14PCh. 11 - Prob. 15PCh. 11 - Refer to Example 3. Suppose that regular-time...Ch. 11 - Prob. 17PCh. 11 - Prob. 18PCh. 11 - Prepare a master production schedule for...Ch. 11 - Update the master schedule shown in Figure 11.11...Ch. 11 - Prepare a master schedule like that shown in...Ch. 11 - Determine the available-to-promise (ATP)...Ch. 11 - Prepare a schedule like that shown in Figure 11.12...Ch. 11 - The objective is to choose the plan that has the...Ch. 11 - Prob. 2CQ
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- . Worldwide Can-Openers, Inc., makes a family of two hand-operated can openers. The production plan is based on months. There are 4 weeks in this month. Opening inventory is 2000 dozen, and it is planned to increase that to 4000 dozen by the end of the month. The MPS is made using weekly periods. The forecast and projected available balance for the two models follow. The lot size for both models is 1000 dozen. Calculate the production plan and the MPS for each item.arrow_forwardA’s lead time is 1 week; B’s lead time is 2 weeks; and C’s lead time is 2 weeks. This is true regardless of order size. Currently you have the following amounts in on-hand inventory; A = 50. a) How many units of B and C will I need to produce for A if I have an order for 100 units of A? b) Give me a time-phased assembly plan for A, B, and C such that I will receive 100 units of A at the beginning of Week 5. Assume that I can work on B and C at the same time (overlap).arrow_forwardITEMS 18 to 20 ARE BASED ON THE FOLLOWING INFORMATION: The following information pertains to Emy Manufacturing Corporation's Product X: Annual demand 33,750 units Annual cost to hold one unit of inventory P15 Setup cost (or the cost to initiate a production run) P500 Beginning inventory of product X 0 At present, the Company produces 2,250 units of Product X per production runt for a total of 15 production runs per year. The company is considering to use the EOQ model to determine the economic lot size and the number of production runs that will minimize the total inventory carrying cost and setup cost for Product X. At present, the company's total annual inventory costs is P 7,500. c. P24,375. P16,875. d. P22,500.arrow_forward
- A company wants to develop a level production plan for a family of products. The opening inventory is 550 units, and a decrease to 200 units is expected by the end of the plan.The demand for each of the periods is given in what follows. All periods have the samenumber of working days. How much should the company produce each period? Whatwill be the ending inventories in each period? Do you see any problems with the plan?arrow_forwardDo all work in Excel with Formulas An office supply store open 5 days a week must determine the best inventory policy for boxes of copier paper. Weekly demand is nearly constant at 250 boxes and when orders are placed, then entire shipment arrives at once. The cost per box is $22 and the inventory holding cost is 30%. Orders are placed at a cost of $40 each, including preparation time and communication charges, and the lead time is 2 days. a. Find the optimal order quantity. b. What is the reorder point? c. How often should an order be placed? d. What is the cycle time?arrow_forwardThe annual demand of ABC Inc. sole product totaled 450,000 units. Due to uncertainty in supply of items, the maximum possible lead time for the orders is 2 weeks and 1 day. A safety stock of 6,250 units is determined. What is the normal lead time? (Use 360 days) Choices: 1 week and 5 days 1 week 9 days 10 daysarrow_forward
- i was reading this answer and the way its calculated is a longer process then what someone else wrote can you check if ishould use this one that bartleby has given me or the other one: Step 1: Basic Information The question is related to Economic order quantiy Economic Order Quantity is that level of inventory at which ordering cost and handling cost are minimum. It is calculated with the help of following formula Economic Order Quantity = √2RO ÷ C R = Annual Requirment C = Carrying or Holding cost O = Ordering Cost Step 2: Solution Economic Order Quantity = √2RO ÷ C Economic Order Quantity = √2 × 3000 × 20 ÷ 4.25 Economic Order Quantity = √28,235.294117647 Economic Order Quantity = 168.0336100834 pounds R = Annual Requirment i.e.250 × 12 = 3000 pounds per annum. C = Carrying or Holding cost i.e. £4.25 O = Ordering Cost i.e. £20 Quantity to be ordered = 168.03 pounds. Supplier = Vendor 1 should be used as the cost per pound for 168 pounds is £32.25 (as per table…arrow_forwardEconomic order quantity (Q*) is 6,000 units. Annual demand (D) is 12,000 units. Find number of orders per year (N*) and time between orders (T*) in weeks. N*=2 times per year, T*= 0.5 years N*=0.33 times per year, T*= 13 years N*=4 times per year, T*= 0.33 years N*=0.25 times per year, T*= 4 years N*=2 times per year, T*= 26 weeks OO Oarrow_forwardHistorical demands observed for the last 5 months are 1000, 2300, 3200, 1750, and 1200. To match the demand, the company placed respective orders of 1100, 2500, 4000, 1000, and 900 units. (a) Compute the variance of demand. (b) Compute the variance of orders. (c) Compute the bullwhip measure. Is there an amplifying or smoothing effect?arrow_forward
- Ajax Manufacturing produces a single product, which takes 8.0 pounds of direct materials per unitproduced. Assume that it is currently at the end of the first quarter of the year, and there are 50,000pounds of material on hand. The company’s policy is to maintain an end-of-quarter inventoryof materials equal to 25 percent of the following quarter’s material requirements for production.How many units of product were produced in the first quarter of the year? Under the assumptionthat production will increase by 10 percent in the second quarter, what are the direct materialsrequirements (in pounds) for planned production in the second quarter?arrow_forwardExercise 2: The demand per year (D) for product X is 12,100 units. The costs of placing an order (S) are $4.50. The unit cost (C) of the item is $25.00. The maintenance cost (H) per unit per year is 30% of the item's cost. 1. Use the economic order quantity (EOQ) model to determine: *Optimal quantity to order* The expected number of orders*Optimal time between orders*The total annual cost of maintaining that optimal amountNOTE: Show calculations of how you arrived at each amount 2. Answer, what are the potential benefits of using EOQ analysis for inventory management? How can you help businesses strike a balance between inventory holding costs and ordering costs?arrow_forwardCaltex uses overtime, inventory, and subcontracting to ab-sorb fluctuations in demand. An annual production plan isdevised and updated quarterly. Expected demand, availablecapacities, and costs for the next four quarters are givenbelow. Design a production plan that will satisfy demand atminimum cost.Regular production cost per unit $10Overtime production cost per unit $15Subcontracting cost per unit $20Inventory holding cost per unit per period $ 2 Regular Overtime SubcontractingPeriod Demand Capacity Capacity Capacity1 1500 1000 200 5002 1900 1000 200 5003 500 1000 200 5004 2000 1000 200 500arrow_forward
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