Process Capacity Analysis Problem In addition to the receiving administrator, Ha

Question

Process Capacity Analysis Problem

In addition to the receiving administrator, Harmon has the following staff:

3 standard CAD engineers, each of whom can do 0.125 standard CAD jobs per hour

2 complex CAD engineers, each of whom can do 0.0625 complex jobs per hour

Consider the partially completed capacity analysis shown below. Based on this the information above and in the previous problems:

How do we get an average unit load of 1.25 hours for the receiving administrator? How do we get an average unit load of 4.00 hours for a Std. CAD Engineer? (Hint: recall that only 50% of all jobs coming into Harmon are standard CAD jobs.) With this information complete the missing calculations in the table below:

Harmon Engineering, Spring 2018 Work day 8 hours l- 12.32 Standard CAD Jobs 50% I 6.54 1-1.67 Receiving 2590 Complex CAD Jobs 100% 0.5 jobs per hour R 25% Rejected Customer declines

Explanation / Answer

This is M/M/1 queue model

Arrival rate, ? = 0.5 jobs per hour

Service rate, ? = 0.8 jobs per hour

According to queuing theory,

Percentage of time, the receiving administrator will be busy = 0.5/0.8 = 0.625 *100= 62.5 %

Average number of jobs being actively worked on in the receiving area, Iq = I - ?/? = (1.67) - 0.5/0.8 = 1.0417

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