Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 16, Problem 20P
The following table contains order-dependent setup times for three jobs. Which processing sequence will minimize the total setup time?
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The following table contains order-dependent setup times for four jobs. For safety reasons, jobC cannot follow job A, nor can job A follow job C. Determine the processing sequence that willminimize the total setup time. (Hint: There are 12 alternatives.)Following Job’sSetup Time (hrs.)SetupTime (hrs.) A B C DPrecedingjobA 2 — 5 × 4B 1 7 — 3 2C 3 x 2 — 2D 2 4 3 6 —
XOX Corporation's management keeps track of the time it takes to process orders. During the most recent month, the following average times were recorded per order
Wait time 15.6
Inspection time 0.8
Process time 1.6
Move time 0.7
Queue time 3.9
Compute the delivery cycle time in days.
Percentage of manufacturing cycle time spent on non-value-added activities.
Given the following information:
Order Time remaining Work Time Work Time
number until due date 1 remaining 2 remaining
1
2
3
10
30
25
40
20
15
-10
20
15
Note: "Work Time 1" includes run time, setup time, move, and queue; "Work Time 2"
includes setup time and run time.
What is the "Order Slack" for order number 3?
Chapter 16 Solutions
Operations Management
Ch. 16 - Why is scheduling fairly simple for repetitive...Ch. 16 - Prob. 2DRQCh. 16 - What are Gantt charts? How are they used in...Ch. 16 - Prob. 4DRQCh. 16 - Briefly describe each of these priority rules: a....Ch. 16 - Why are priority rules needed?Ch. 16 - What problems not generally found in manufacturing...Ch. 16 - Explain forward and backward schedulings and each...Ch. 16 - Prob. 9DRQCh. 16 - Prob. 10DRQ
Ch. 16 - Prob. 11DRQCh. 16 - What general trade-offs are involved in sequencing...Ch. 16 - Prob. 2TSCh. 16 - Prob. 3TSCh. 16 - One approach that can be effective in reducing the...Ch. 16 - Doctors and dentists offices frequently schedule...Ch. 16 - Prob. 3CTECh. 16 - Use the assignment method to determine the best...Ch. 16 - Rework Problem 1, treating the numbers in the...Ch. 16 - Assign trucks to delivery routes so that total...Ch. 16 - Develop an assignment plan that will minimize...Ch. 16 - Use the assignment method to obtain a plan that...Ch. 16 - The following table contains information...Ch. 16 - Using the information presented in the following...Ch. 16 - The following table shows orders to be processed...Ch. 16 - A wholesale grocery distribution center uses a...Ch. 16 - The times required to complete each of eight jobs...Ch. 16 - Prob. 11PCh. 16 - A shoe repair operation uses a two-step sequence...Ch. 16 - The following schedule was prepared by the...Ch. 16 - The production manager must determine the...Ch. 16 - A foreman has determined processing times at a...Ch. 16 - Given the information in the following table,...Ch. 16 - Given the following information on job times and...Ch. 16 - Prob. 18PCh. 16 - The following table contains order-dependent setup...Ch. 16 - The following table contains order-dependent setup...Ch. 16 - Prob. 21PCh. 16 - Given this information on planned and actual...Ch. 16 - Given the following data on inputs and outputs at...Ch. 16 - Determine the minimum number of workers needed,...Ch. 16 - Determine the minimum number of workers needed,...Ch. 16 - Determine the minimum number of workers needed,...Ch. 16 - Prob. 1CQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- Super Fun Industries manufactures four top-selling toys code named A-148, B-356, B-457, and C-843. The following table shows how long it takes to process each toy through each required station. Note that all times are in minutes. Super Fun’s manufacturing plant is open 16 hours a day, 5 days a week, and 8 hours on Saturday. A-148 B-356 B-457 C-843 Processing Time Station 1 6 min 5 min 0 min 8 min Processing Time Station 2 4 min 4 min 5 min 2 min Processing Time Station 3 5 min 7 min 4 min 2 min Processing Time Station 4 3 min 0 min 10 min 1 min a. If only toy A-148 is produced during a specific week, how many units could be produced? b. If weekly demand for the four products are A-148 = 200 units, B-356 = 250 units, B-457 = 250 units, and C-843 = 300 units, which station is the bottleneck, and is it capable of producing all the toys demanded?arrow_forwardXOX Corporation's management keeps track of the time it takes to process orders. During the most recent month, the following average times were recorded per order Wait time 15. 6 Inspection time 0.8 Process time 1.6 Move time 0.7 Queue time 3. 9 1. Percentage of manufacturing cycle time spent on non-value-added activities 2. Compute the delivery cycle time in daysarrow_forwardThe assembly department started the month with 468,000 units in its beginning work in process inventory. An additional 1,524,000 units were transferred in from the prior department during the month to begin processing in the Assembly Department. There were 126,000 units in the ending work in process inventory of the Assembly Department. How many units were transferred to the next processing department during the month? a. 1,992,000 b. 1,992,000 c. 2,118,000 d. 1,866,000 e. 1,398,000 f. 1,182,000arrow_forward
- Order 1 2 3 4 5 Time Since Order Arrived (hours ago) 3 1 0 6 5 You answered Sequence Order The due dates reflect the need for the order to be at its next operation. Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average past due hours. Using the FCFS (first come, first served) decision rule for sequencing the orders, the order is Sequence Order Estimated Machine Time (hours) 15 9 7 10 3 1 5 Rule EDO FCFS 4 4 Using the EDD (earliest due date) decision rule for sequencing the orders, the order is (to resolve a tie, use order in which the orders were received) ¹2 1 4 2 3 Due Date (hours from now) 5 5 3 18 20 21 12 The average flow time and average past due hours for each option (enter your responses are real numbers rounded to two decimal place Average Flow Time Average Past Due Hoursarrow_forwardSuper Fun Industries manufactures four top-selling toys code-named A-148, B-356, B-457, and C-843. The following table shows how long it takes to process each toy through each required station. Note that all times are in minutes. Super Fun's manufacturing plant is open 12 hours a day, 5 days a week, and 8 hours on Saturday. a. If only toy A-148 is produced during a specific week, ____ units could be produced. (Enter your response rounded down to the nearest whole number.)arrow_forwardKingcade Corporation keeps careful track of the time required to fill orders. Data concerning a particular order appear below: Wait time Process time Inspection time Move time Queue time The throughput time was: Multiple Choice 33.1 hours 4.7 hours 28.4 hours 14.3 hours Hours 18.8 1.6 0.6 2.5 9.6arrow_forward
- Klassen Toy Company, Inc., assembles two parts (parts 1 and 2): Part 1 is first processed at workstation A for 10 minutes per unit and then processed at workstation B for 15 minutes per unit. Part 2 is simultaneously processed at workstation C for 20 minutes per unit. Work stations B and C feed the parts to an assembler at workstation D, where the two parts are assembled. The time at workstation D is 10 minutes. The hourly capacity of the process? (enter your response as a whole number). 3 units 2 units 4 units 6 units 60 unitsarrow_forwardJack's Refrigeration Repair Service repairs and reconditions commercial icemakers at restaurants. Jack has four jobs to complete. Below are their processing times and due dates: Job Processing time (hours) Due date (hour) A 20 50 B 10 40 C 15 35 D 55 75 What is the average inventory if jobs are processed using the earliest due date rule?arrow_forwardJoe's Twenty-four Seven Laundromat has the following jobs waiting to be processed. The first step of the process includes washing and drying the clothes; the second step is pressing the clothing. Joe wants to minimize the amount of time it takes to do all the jobs. The five jobs waiting to be processed are shown here. Job Wash andDry (hours) Press(hours) A 5 4 B 3 4 C 2 3 D 7 5 E 4 2 Wash and Dry Using FCFS, assume the jobs arrive in the order shown (A, then B, then C, etc.). Show the beginning time for each job and ending time for the whole process adding hours throughout the process. A -0 number of hours B-5 number of hours C-8 number of hours D-10 number of hours E-17 number of hours A B C D E 0 enter a number of hours enter a number of hours enter a number of hours enter a number of hours enter a number of hours enter a number of hours Pressarrow_forward
- DreamInflate is a balloon manufacturing company. Balloon manufacturing consists of seven work stations, each performing a single step as indicated in the table below. There are five workers manned for the seven work stations as shown. Assume the workers are paid $15 per Worker Task Sequence Processing Time (secs/balloon) Task Dye production Electrocharging Dipping (Cold and Hot) Mortar Dipping Balloon inflation and delaltexing Vulcanization Inspection/Testing 1 30 w1 20 3 35 W2 25 W3 30 W4 6. 45 W5 7 40 hour. Each balloon pack is sold for $6 and has a variable cost of $1. The company has fixed costs of $200 per hour. There is more demand than the overall production system can provide. Based on the information provided, answer the following questions: • What is the cost of direct labor for balloons? • How much profit does DreamInflate make every hour? (note that the cost of direct labor is also a variable cost). What would the profit of DreamInflate be if the variable costs were 10…arrow_forwardBrown's Machining has three jobs with the routings and processing times (in minutes) as indicated on its drill press, lathe, milling machine, and grinder. It uses an LWR dispatching rule. Job 1: D(15), L(25), G(45) Job 2: D(20, M(25), G(30) Job 3: G(25), L(25), D(15), M(15) What time is Job 1 completed?arrow_forwardWhat is the total idle time of the process assuming unlimited demand?arrow_forward
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