5. Flo's Quick-Lube performs fast oil changes (A) and checks for tire pressure and wear (B) andbrakes and alignment (C) according to the process flow indicated by the diagram below. Eachincoming car is put on a jack while one technician performs task A and another simultaneouslyperforms task B and a third performs task C (which must follow task B due to the limited spaceunder the vehicle on the jack). The server for task A takes on average 3 minutes to process a job,the server for task B takes on average 2 minutes to process a job, and the server for task C takeson average 2 minutes to process a job. Server A can be operated in parallel with Servers B and C.All processing times are random and exponentially distributed, and jobs are allowed to queue infront of each server. (You can assume that the number of jacks is sufficient to allow any length ofqueue.)(a)ANDBACFigure 1: Flo's Process FlowWhat is the capacity of the process (in orders/minute)?

The time taken to finish a unit being worked on parallel workstation can be computed by finding the…

Answered: 5. Flo's Quick-Lube performs fast oil…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Rocky’s Pre-Cast Shop is considering two different processes for completing Pre-Cast jobs. Process A uses one person to setup the job and do the pre-casting. If this approach is used, an experienced person can complete an average of 20 jobs per day. Process B uses two people. One person does the setup and the second person does the actual pre-casting. Setup on one job can be done while pre-casting is being completed on another but pre-casting must be completed on a job before the pre-cast machine can start processing the next. After some practice, this second process can be completed with a standard time of 10 minutes for setup and 15 minutes for actual pre-casting. In either case, assume an 8-hour day, 5 days per week, 250 days per year. 3. Assuming ideal conditions, what is the maximum capacity of process B? 4. How long would it take to process 200 jobs using process A (assume only one worker and one machine)? 5. If Rocky’s is primarily…
2) Regarding Data Flow Diagram (DFD), which of the following statement is/are TRUE? Data flows must be an input or output of a Process Box. Physical flows are sometimes represented by a dotted line. Data Flow diagram (DFD) is a type of diagram that represents the sequences of a process or workflow. External entities (people, place or organizations) are sources or destinations of data that are lying outside the context of the system. Data stores can hold permanent, temporary, historical or extract data. Files receive inputs and outputs only from Processes, NOT from Externals or other Files. None of the above.
As a graduate assistant, your duties include grading and keeping records for Operations Management course homework assignments. Five sections for 40 students each are offered each semester. A few graduate students attend sections 3 and 4. Graduate students must complete some extra work to higher standards for each assignment. Every student delivers (or is supposed to deliver) directly to (under) the door of your office one homework assignment every Tuesday. Your job is to correct the homework, record grades, sort the papers by class section, sort by student last name in alphabetical order, and return the homework papers to the appropriate instructors (not necessarily in that order). There are some complications. A fair majority of the students sign their names legibly, others identify work with their correct ID number, and a few do neither. Rarely do students identify their section number or graduate status. Prepare a list of process chart steps and place them in an efficient sequence.
Smooth Chin Device Company The Smooth Chin Device Company is a manufacturer of high-end electric razors. These razors are produced using a machine-paced process. For each razor, a tray with components enters the process at the beginning of a conveyor belt. The tray then passes through the six steps (consisting of various tasks) explained in the table below. Workers perform the assembly operations on the moving tray. The last step consists of an inspection of the then fully assembled razor. The activity times of the process are as follows: There are six workers, one at each of the six stations (A-F). They begin their workday at 8:00 a.m. and work steadily until 4:00 pm. (They are replaced with other workers for breaks and lunches, but the production is not slowed or stopped during these times.) Their hourly wage rate is $25 per hour. You can assume unlimited demand. What is the process capacity (you can ignore any start-up or empty system effects), in razors/hour?
Atlas Inc. is a toy bicycle manufacturing company producing a five-inch smallversion of the bike that Lance Armstrong rode to win his first Tour de France. The assembly lineat Atlas Inc. consists of seven work stations, each performing a single step. Stations andprocessing times are summarized here: Step 1 (30 sec.): The plastic tube for the frame is cut to size. Step 2 (20 sec.): The tube is put together. Step 3 (35 sec.): The frame is glued together Step 4 (25 sec.): The frame is cleaned. Step 5 (30 sec.): Paint is sprayed onto the frame. Step 6 (45 sec.): Wheels are assembled. Step 7 (40 sec.): All other parts are assembled to the frame.Under the current process layout, workers are allocated to the stations as shown here: Worker 1: Steps 1, 2 Worker 2: Steps 3, 4 Worker 3: Step 5 Worker 4: Step 6 Worker 5: Step 7a. What is the bottleneck in this process?b. What is the capacity of this assembly line, in finished units/hour?c. What is the utilization of Worker 4, ignoring…
Data Products, Inc., packages and distributes a variety ofpersonal computer-related products. A time study hasbeen conducted for a job packaging 3.5-inch personalcomputer diskettes for shipment to customers. The jobrequires a packager to place 20 diskettes in a rectangularplastic bag, close the bag with a twist tie, and place thefilled bag into a bin, which is replaced by another workerwhen it is filled. The job can be broken into four basic elements. The elemental times (in minutes) were ob-tained from the time study for 10 job cycles shown in the following table. a. Using an allowance factor of 16%, determine the stan-dard time for this job. b. Determine the number of cycles for this time studysuch that the company would be 95% confident that theaverage time from the time study is within 4% of thetrue average cycle time.
3 = noito This work cell will produce 617 units per day (8h x 60 m x 60 se) / 46.67 = 617 Takt time = 140/3 = 46.67 Copyright © 2017 Pearson Education, Ltd. Takt time design Creating plate printing cutting packaging Example: 100 Al-Nojoom Company for advertising has identified the following operations as necessary for the work cell for producing color posters. The customer expects delivery 1000 poster per day, and the work day 10 hours. 1. What is the takt time? Copyright © 2017 Pearson Education, Ltd. 2. How many employees are required? 3. If the number of employees assumed to be 9 employees. Find the quantity of products they able to produce. 4. If the work cell has 4 employees find the Total work time by hours needed to produce 600 units with the same operational time. operation Standard time 21.01 unitnos (min) 1.1 0.9 .75 1.25 1 9-33 sill nG a super 9-34
Smooth Chin Device Company The Smooth Chin Device Company is a manufacturer of high--end electric razors. These razors are produced using a machine--paced process. For each razor, a tray with components enters the process at the beginning of a conveyor belt. The tray then passes through the six steps (consisting of various tasks) explained in the table below. Workers perform the assembly operations on the moving tray. The last step consists of an inspection of the then fully assembled razor. The activity times of the process are as follows: Station Tasks A Preparation 1. Lay out chassis [12 sec] 2. Lay out screws [15 sec] 3. Lay out all other components [17 sec] Total time for A: 44 sec B Assembly 4. Perform task AS1 [10 sec] 5. Perform task AS2 [10 sec] 6. Perform task AS3 [20 sec] Total time for B: 40 sec C Assembly 7. Perform task AS4 [14 sec] 8. Perform task AS5 [16 sec] 9. Perform task AS6 [20 sec] 10. Perform task AS7 [5 sec] Total time for C: 55 sec…
Smooth Chin Device Company The Smooth Chin Device Company is a manufacturer of high--end electric razors. These razors are produced using a machine--paced process. For each razor, a tray with components enters the process at the beginning of a conveyor belt. The tray then passes through the six steps (consisting of various tasks) explained in the table below. Workers perform the assembly operations on the moving tray. The last step consists of an inspection of the then fully assembled razor. The activity times of the process are as follows: Station Tasks A Preparation 1. Lay out chassis [12 sec] 2. Lay out screws [15 sec] 3. Lay out all other components [17 sec] Total time for A: 44 sec B Assembly 4. Perform task AS1 [10 sec] 5. Perform task AS2 [10 sec] 6. Perform task AS3 [20 sec] Total time for B: 40 sec C Assembly 7. Perform task AS4 [14 sec] 8. Perform task AS5 [16 sec] 9. Perform task AS6 [20 sec] 10. Perform task AS7 [5 sec] Total time for C: 55 sec…
The management of the Just Like Home Restaurant has asked you to analyze some of its processes. One of these processes is making a single-scoop ice cream cone. Cones can be ordered by a server (for table service) or by a customer (for takeout). Figure 2.200 illustrates the process chart for this operation. Figure 2.20 Process Chart for Making Ice Cream Cones Process: Subject: Server at counter Beginning: Walk to cone storage area Ending: Give it to server or customer Step No. 1 2 3 4 5 6 7 8 0 9 10 11 12 13 14 Making one ice cream cone Insert Step Append Step Remove Step Time (min) 0.20 0.05 0.10 0.05 0.20 0.50 0.15 0.05 0.10 0.75 0.75 0.25 0.05 0.05 Distance (ft) 5.0 5.0 8.0 8.0 2.5 2.5 ● → X X X X X X X X X X X X X X Activity Operation Transport I Inspect Delay Store ▶ Summary Number Time of Steps (min) Step Description Walk to cone storage area Remove empty cone Walk to counter Place cone in holder Walk to sink area Ask dishwasher to wash scoop Walk to counter with clean scoop Pick…
(a) T. Smunt Manufacturing Corp. has the process displayed below. The drilling operation occurs separately from and simultaneously with the sawing and sanding operations. The product only needs to go through one of the three assembly operations (the assembly operations are "parallel"). ASSEMBLY SAWING SANDING 78 min/unit 15 min/unit 15 min/unit WELDING ASSEMBLY DRILLING 25 min/unit 78 min/unit 27 min/unit ASSEMBLY 78 min/unit 1. Which operation is the bottleneck? 2. What is the throughput time for the overall system? 3. If the firm operates 8 hours per day, 22 days per month, what is the monthly capacity of the manufacturing process? 4. Suppose that a second drilling machine is added, and it takes the same time as the original frilling machine. What is the new bottleneck time of the system? 5. Suppose that a second drilling machine is added, and it takes the same time as the original drilling machine. What is the new throughput time?
[The following information applies to the questions displayed below.] The following are the car repair shop data: TETE Ticket No. Work Ticket No. Work Ticket No. Work 1 Lube & oil 11 Battery 21 Battery Tires 2 Lube & oil 12 Tires 22 3 Brakes 13 Brakes 23 Brakes 4 Lube & oil 14 Transmission 24 Transmission Lube & oil 15 Brakes 25 Brakes Tires 16 Battery 26 Lube & oil 7 Tires 17 Brakes 27 Lube & oil 8. Brakes 18 Tires 28 Lube & oil 9. Brakes 19 Tires 29 Tires 10 Lube & oil 20 Lube & oil 30 Lube & oil

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