EBK OM
6th Edition
ISBN: 9781305888210
Author: Collier
Publisher: YUZU
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Chapter 8, Problem 10PA
Summary Introduction
Interpretation:Production line needs to be designed to achieve an output rate of 120 per hour.
Concept Introduction: Assembly line balancing is an important task that helps to reduce the cycle time by keeping the precedence relationships as it is.
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Students have asked these similar questions
Mr. Aris Benn manages an assembly line that produces a piece of equipment that is used to clean floors. The process to produce this piece of equipment consists of 10 steps.
1. Determine what other information is needed in order to balance this assembly line.
2. set up a numerical example of the line balancing problem at hand. Using this example, demonstrate how to balance the line and how to calculate its efficiency.
SITUATION: A company is about to begin
production of a new product. The manager of
the department that will produce one of the
components for the product wants to know
how often the machine used to produce the
item will be available for other work. The
machine will produce the item at a rate of
200 units a day. Eighty units will be used daily
in assembling the final product. Assembly will
take place five days a week, 50 weeks a year.
The manager estimates that it will take almost
a full day to get the machine ready for a
production run, at the cost of $300. Inventory
holding costs will be $10 a year.
QUESTION: Suppose the manager decides to
increase the run size of the new product. How
many additional units would be needed just
to accommodate the other job? How much
will that increase the total annual cost?
Rock View Restaurant is a new fast-food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks:
Task
Description
Task time in seconds
Predecessors
A
Take Order
25
none
B
Received Payment
20
A
C
Gather Drinks
35
A
D
Gather Food
32
A
E
Put food etc. in bag
25
C,D
F
Give food to customer
10
B,E
Currently, Rock View Restaurant has a single window with one person who takes the order,gather the food, collects the money and gives the food to the customer. This takes an average of147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants toincrease its drive-through capacity to 60 cars per hour by forming a multi-window line.
i. Draw the precedence diagram to represent the process at Rock View Restaurant.ii. Calculate the cycle time in seconds.iii. Calculate the minimum number of windows that Rock View Restaurant will need toserve 60 cars per hour.
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- Rock View Restaurant is a new fast-food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks: Task Description Task time in seconds Predecessors A Take Order 25 none B Received Payment 20 A C Gather Drinks 35 A D Gather Food 32 A E Put food etc. in bag 25 C,D F Give food to customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order,gather the food, collects the money and gives the food to the customer. This takes an average of147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants toincrease its drive-through capacity to 60 cars per hour by forming a multi-window line. Using the LOT heuristic, assign the tasks to the windows to produce the desiredservice rate making sure that the precedence relationship is maintained.Calculate the efficiency of the newly design process.arrow_forwardSuppose the times for the individual operations for the in-line skate assembly are as follows: Task Description Time (sec) 1 Assemble wheels, bearings, and axle hardware 11 2 Assemble brake housing and pad 8 3 Complete wheel assembly 20 4 Inspect wheel assembly 13 5 Assemble boot 18 6 Join boot and wheel subassemblies 7 7 Add line and final assembly 10 8 Perform final inspection 10 Consider the production line achieving an output rate of 180 per hour below. Using the proposed design, calculate the total time and idle time for each workstation. If your answer is zero, enter "0". Round your answers to the nearest whole number. Station Tasks Total Time, seconds Idle Time, seconds A 1 and 2 B 3 C 5 D 4 and 6 E 7 and 8 Total What is the assembly line efficiency? Round your answer to one decimal place. %arrow_forwardRock View Restaurant is a new fast-food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks: Tasks Description Task Time (In Seconds) Predecessors A Take Order 25 None B Receive payment 20 A C Gather drinks 35 A D Gather Food 32 A E Put food etc. In bag 25 C,D F Give food to Customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order,gather the food, collects the money and gives the food to the customer. This takes an average of147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants toincrease its drive-through capacity to 60 cars per hour by forming a multi-window line.1. Calculate the efficiency of the newly design process.arrow_forward
- Rock View Restaurant is a new fast-food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks: Tasks Description Task Time (In Seconds) Predecessors A Take Order 25 None B Receive payment 20 A C Gather drinks 35 A D Gather Food 32 A E Put food etc. In bag 25 C,D F Give food to Customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order,gather the food, collects the money and gives the food to the customer. This takes an average of147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants toincrease its drive-through capacity to 60 cars per hour by forming a multi-window line.i. Using the LOT heuristic, assign the tasks to the windows to produce the desiredservice rate making sure that the precedence relationship is maintained.arrow_forwardRock View Restaurant is a new fast-food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks: Tasks Description Task Time (In Seconds) Predecessors A Take Order 25 None B Receive payment 20 A C Gather drinks 35 A D Gather Food 32 A E Put food etc. In bag 25 C,D F Give food to Customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order,gather the food, collects the money and gives the food to the customer. This takes an average of147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants toincrease its drive-through capacity to 60 cars per hour by forming a multi-window line.1. Draw the precedence diagram to represent the process at Rock view restaurant.arrow_forwardRock View Restaurant is a new fast-food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks: Tasks Description Task Time (In Seconds) Predecessors A Take Order 25 None B Receive payment 20 A C Gather drinks 35 A D Gather Food 32 A E Put food etc. In bag 25 C,D F Give food to Customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order,gather the food, collects the money and gives the food to the customer. This takes an average of147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants toincrease its drive-through capacity to 60 cars per hour by forming a multi-window line.1. Calculate the cycle time in seconds.arrow_forward
- A paced assembly line has been devised to manufacture calculators, as the following data show: Station Work ElementAssigned Work ElementTime (min) S1 S2 S3 S4 S5 S6 A D,E C B,F,G H,I,J K 2.7 0.6, 0.9 3.0 0.7, 0.7, 0.9 0.7, 0.3, 1.2 2.4 a. What is the maximum hourly output rate from this line? (Hint: The line can go only as fast as its slowest workstation.)b. What cycle time corresponds to this maximum output rate?c. If a worker is at each station and the line operates at this maximum output rate, how much idle time is lost during each 10-hour shift?d. What is the line’s efficiency?arrow_forwardRock View Restaurant is a new fast food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks:Tasks Description Task Time(InSeconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served.…arrow_forwardRock View Restaurant is a new fast food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks:Tasks Description Task Time(InSeconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served.…arrow_forward
- Rock View Restaurant is a new fast food restaurant chain. The Operations Manager has divided its normal drive-through service process into the following tasks:Tasks Description Task Time(In Seconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer10 B,ECurrently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants to increase its drive-through capacity to 60 cars per hour by forming a multi-window line. Calculate the efficiency of the newly design process.arrow_forwardRock View Restaurant is a new fast food restaurant chain. The Operations Manager has divided its normal drive-through service process into the following tasks:Tasks Description Task Time(In Seconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer10 B,ECurrently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants to increase its drive-through capacity to 60 cars per hour by forming a multi-window line. Using the LOT heuristic, assign the tasks to the windows to produce the desired service rate making sure that the precedence relationship is maintained.v. Calculate the efficiency of the newly design processarrow_forwardSuppose the times for the individual operations for the in-line skate assembly are as follows: Task Description Time (sec) 1 Assemble wheels, bearings, and axle hardware 19 2 Assemble brake housing and pad 17 Complete wheel assembly 35 4 Inspect wheel assembly 20 Assemble boot 35 6 Join boot and wheel subassemblies 16 7 Add line and final assembly 20 8 Perform final inspection 14 Consider the production line achieving an output rate of 100 per hour below. Using the proposed design, calculate the total time and idle time for each workstation. If your answer is zero, enter "0". Round your answers to the nearest whole number. Task5 Task1 Task 7 Task3 Task2 Task8 Task 4 Task6 Station Tasks Total Time, Idle Time, seconds seconds A 1 and 2 B 3 D 4 and 6 E 7 and 8 Total What is the assembly line efficiency? Round your answer to one decimal place. %arrow_forward
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