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ENTR 3130 Lecture 04A - Capacity

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Brad Anderson

on 21 January 2016

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Transcript of ENTR 3130 Lecture 04A - Capacity

Brad Anderson
What is capacity?
How do you measure it?
Design vs Effective Capacity?
Capacity in the news
Full wards mean ER backups at BC hospitals: Royal Columbian Hospital in New Westminster operating at 104% capacity.
McLellan, Wendy. (1998, June). Medical Post, 34(23), 41.
What happens when you run at such a high efficiency?
"Dr. Granger's letter follows the fire marshal being called into Royal Columbian in February to deal with overcrowding"
Theresa McManus. (2008, April 5). 'Radical' change needed, doctor says. The Record,3.
"How a hospital's Tim Hortons became a temporary ER. "
Robert Matas. (2011, March 2). The Globe and Mail,p. S.1.
What is a capacity cushion?
Sizing Capacity
Work on Question 18, page 157
Assume customers come in 2 waves (at 5 PM or at 7PM)
Wrap up
Capacity is a crucial decision
Too much capacity - idle capital & resources
Too little capacity - unable to meet demand; lost customers
Utilization vs. Efficiency?
The following diagram shows a four-step process that begins with Operation 1 and ends with Operation 4 The rates shown in each box represent the effective capacity of that operation
Determine the capacity of this process
Which of the following three actions would yield the greatest increase in process capacity (i) increase the capacity of operation 1 by 15%; (ii) increase the capacity of operation 2 by 10%; or (iii) increase the capacity of operation 3 by 10%
Operation 1
Operation 2
Operation 3
Operation 4
Source: Stevenson, W. J. & Hojati, M (2011). Operations Management. 4th Canadian Ed. McGraw-Hill Ryerson
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