Manufacturing Process

Over a three day period data was collected and reviewed on the manufacturing companies output hourly excluding the maintenance shut down on the 24th hour compiled data can be found in charts below for each day.

\[LCL=22.6521286\]

\[UCL=27.3478714\]

DAY 1 Output

\[\sigma=1.75\] \[\mu=25\]

\[n=5\]

The process should be stopped at the 9th hour because Nelson Rule 3# States:if 4 out of 5 consecutive points are on the SAME side of the centerline in zone 2 then processes should be haulted.

DAY 2 Output

The process should be stopped at the 4nd hour because Nelson Rule # 2 States: If 2 out of 3 consecutive points on the SAME side of the center line above 2 zones to stop and examine issue.

DAY 3 Output

The last day of the process is the only day that production didnt have any issues.