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A manufacturing facility has five jobs to be scheduled for production. The following table gives the processing times plus the necessary wait times and other necessary delays for each of the jobs. Assume that today is April 3, that the facility will work every day between now and the due dates, and the jobs are due on the dates shown:

Job

Days of

Actual Processing

Time Required

Days of

Necessary Delay

Time

Total Time

Required

Date Job

Due

1

2

3

4

5

2

5

9

7

4

12

8

15

9

22

14

13

24

16

26

April 30

April 21

April 28

April 29

April 27

Determine two schedules, stating the order in which the jobs are to be done. Use the critical ratio priority rule for one. You may use any other rule for the second schedule as long as you state what it is.

Short Answer

Expert verified

The job processing order is 5-3-2-4-1.

Step by step solution

01

Introduction

Scheduling is the process of organizing, managing, and optimizing work and workloads in a production or manufacturing process. Scheduling is used to arrange human resources, allocate plant and machinery resources, coordinate production processes, and obtain supplies.

02

Find the schedule

The proportion of anyone deviation from the mean in a collection of observed values of the same statistical variable is the set's standard deviation or the associated probable error.

Consider the given data of a manufacturing facility and then calculate the schedule from the critical ratio formula as shown below:

CriticalRatio(CR)=Duedate-CurrentdateNo.ofremainingworkingdays

03

Arrange the jobs in the ascending order of the critical ratio

Therefore, the job processing order is 5-3-2-4-1.

Scheduling utilizing the FCFS rule is illustrated following table:

FCFS stands for First Come, First Served, which means that the work that arrives first will be scheduled first, regardless of any other factors. As a result of the FCFS regulation, task 1 will be scheduled first, followed by job 2, and so on.

Hence, jobs will be scheduled in the following order: 1-2-3-4-5.

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Most popular questions from this chapter

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