OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
7th Edition
ISBN: 9780077835439
Author: Roger G Schroeder, M. Johnny Rungtusanatham, Susan Meyer Goldstein
Publisher: McGraw-Hill Education
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Chapter 7, Problem 5P

Suppose a work center has a setup plus run time of 30 minutes to make 50 parts. Also assume it takes 10 minutes to move a standard container of 50 parts to the next work center and the demand rate is one part per minute throughout the day.

  1. a. Schedule this situation by drawing a picture of when work center A should be producing and idle and when movements of containers take place from A to B, the using work center.
  2. b. How many standard containers are needed for this part to circulate from the picture in part a?
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Suppose a work center has a setup plus run time of 30 minutes to make 50 parts. Also assume it takes 10 minutes to move a standard container of 50 parts to the next work center and the demand rate is one part per minute throughout the day.a. Schedule this situation by drawing a picture of when work center A should be producing and idle and when movements of containers take place from A to B, the using work center.b. How many standard containers are needed for this part to circulate from the picture in part a?c. Use the formula n = DT ÷ C to calculate the number of containers.
XYZ is famous for homemade pizzas which are crisp with thin crust and varied toppings giving the pizzas fabulous tastes. XYZ· is revamping its order processing and pizza-making process. In order to deliver fresh pizza fast, six work elements must be completed as shown in the table below :Element Description Precedence Time (in min)A Receive order - 2·0B Shape dough A 1·0C Prepare toppings A 2·0D Assemble pizza B, C 3·0E Bake pizza D 3·0F Deliver pizza E 3·0Construct a precedence diagram for the process.If the demand is 120 pizzas per night (5:00pm to 1:00am), compute the cycle time for the process. Compute the lead time for the process.What is the theoretical minimum number of workstations needed to achieve the required production?How will you balance the production line to produce and deliver 120 pizzas per night? What is the actual minimum number of workstations needed?
Judy’s Cake Shop makes fresh cakes to customer orders. After receiving the order by Judy’s assistant, which takes 2 minutes, Judy then takes 8 minutes tomix the ingredients for the cake and loads a cake pan for baking. Then the cake is put into the oven for 30 minutes. The oven can hold three cakes at one time. When the cake is taken out of the oven, it is cooled for 1 hour. The assistant then takes 2 minutes to pack the cake for pickup and bills the customer, which takes 3 minutes.a. What is the capacity of the process, and what is the bottleneck?b. What is the throughput time for a typical cake?c. If on average five orders are taken per hour, how many cakes are there in the process (on average)?
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