Line Efficiency and Overall Equipment Effectiveness - Answers - 2019 PDF

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Line Efficiency and Overall Equipment Effectiveness PKG 432 Spring 2019 Due By 8:00AM on March 28, 2019 Late Submissions Will Not Be Accepted 40 points are possible. Instructions Step 1:

Print this worksheet and provide the required answers. Answers for downtime and uptime must be integers (examples: 15 or 12,200). Integers must be exact, no rounding or truncation is allowed. No decimal points, plus/minus signs (+/-), or spaces are allowed. Commas are allowed; however, if commas are used they must be in the correct locations. All other answers must be decimal fractions with three digits of accuracy and no more than one leading zero before the decimal point (example: 0.724 or 0.670). Tolerance for these answers is +/- 0.005 units, anything outside of this range is considered incorrect. Example: If the answer is 0.762, then the acceptable answer range is 0.757 to 0.767. Please note that line efficiency and OEE values are to be entered as decimal numbers (example: 0.425), NOT percent.

Step 2:

Go to Homework 2 – Line Efficiency & OEE in the Homework module on the course D2L website and transfer your answers to the homework submission sheet provided. Be sure to have your answers ready BEFORE accessing the submission sheet as you only have 2 hours after accessing the submission sheet to do the transfer (it is expected to take less than 15 minutes). Once submitted, no changes are allowed. No partial credit will be given. This assignment will be automatically graded in D2L and will not be reviewed for partially correct answers!

Step 3:

Correct answers will be posted after the assignment due date/time has past.

Questions 1-7.

You have a packaging line consisting of 5 machines. The machines run for 2 shifts per day, 8 hours per shift. The downtime for each machine for a week has been recorded in the table below. Find each machine ’s efficiency based on this data by filling in the remainder of the table. (15 points)

Day

Shift

1

1 2 1 2 1 2 1 2 1 2

2 3 4 5

8.

Machine 1 11 14 12 21 20 15 17 18 7 23

Downtime (minutes) Machine 2 Machine 3 Machine 4 12 17 9 33 29 13 23 34 5 18 25 18 15 24 16 27 21 5 14 15 20 19 28 5 28 33 23 16 16 20

Machine 5 18 6 11 18 13 28 25 30 14 19

Total Downtime For Week (Question 1)

158

205

242

134

182

Total Uptime For Week (Question 2)

4642

4595

4558

4666

4618

Machine Efficiency (Questions 3-7)

0.967

0.957

0.950

0.972

0.962

Calculate the line efficiency based on the data from questions 1-7. (5 points) Line Efficiency = 0.967 x 0.957 x 0.950 x 0.972 x 0.962 = 0.822

9-12. A line has the operating characteristics listed below.    

The line runs 3 shifts a day, and the line is expected to operate for 7.0 hours each shift. Downtime per day is 34 minutes (note that this is per day, not per shift). Equipment is designed to run at 160 packages per minute. 187,700 packages are produced per day, of which 180,000 are acceptable.

9. Determine the Availability metric of the line. (5 points). Scheduled Time = 3 shifts x 7.0 hours/shift x 60 minutes/hour = 1260 minutes Uptime = Scheduled Time – Downtime = 1260 minutes – 34 minutes = 1226 minutes Availability = Uptime / Scheduled Time = 1226 minutes / 1260 minutes = 0.973 10. Determine the Performance metric of the line. (5 points) Expected Packages = Uptime x Design Run Rate = 1226 minutes x 160 packages/minute = 196,160 packages. Packages Produced = 187,700 packages (given in information above) Performance = Packages Produced / Expected Packages = 187,700 packages / 196,160 packages = 0.957 11. Determine the Quality metric of the line. (5 points) Acceptable Packages = 180,000 packages (given in information above) Quality = Acceptable Packages / Packages Produced = 180,000 package / 187,700 packages = 0.959 12. Determine the OEE metric of the line. (5 points) OEE = Availability x Performance x Quality = 0.973 x 0.957 x 0.959 = 0.893...