You can configure the alerts for SPC reports.
(1) 8 of them are standards Typical special cause criteria (1) based on Standard Deviation from Western Electric / Shewhart
The AIAG (Automotive Industry Action Group) is an American association that publishes the automotive industry standards
* k points out of 3 standard deviations from centerline.
(Test #1 AIAG : k=1).
Test applied on the centering and dispersion charts.
Triggers an alarm when the number of values outside the centering control limit (more than 3 sigma above or below) reaches or exceeds the value entered. (to detect if the process average has changed)
This alert corresponds to a Shewhart's rule when set to 1.
* k points in a row same side of centerline.
(Shift - Test #2 AIAG : k=7, Nelson : k=9, WER : k=8)
Triggers an alarm when the number of values consecutively above or below the average reaches or exceeds the value entered (to detect a change in the process average and variation.
This alert corresponds to a Shewhart's rule when set to 8.
Example: Shift Red Alert = 10
* k points in a row all increasing or all decreasing
(Drift - Test #3 AIAG : k=6)
Triggers an alarm when the number of values consecutively growing or decreasing reaches or exceeds the value entered (it signals a drift in the process average).
This alert corresponds to a Shewhart's rule when set to 6.
Example: Drift Red Alert = 5
* k points in a row alternating up and down
(Test #4 AIAG : k=14)
Triggers an alert if the number of consecutive points that are alternately up and down is greater than or equal to the value entered (to see if pattern of the process is predictable)
This alert corresponds to a Shewhart's rule when set to 14.
Example: Red Alert Alt Up Down = 5
* k out of 3 pts out of 2 standard deviations from centerline (same side)
(Test #5 AIAG : k=2)
Triggers an alert if among 3 consecutive points, the number of points above +2 sigma or below -2 sigma is greater than or equal to the value entered (it provides an "early warning" of a process shift)
Value entered must be less than 3 for points to show up colored otherwise only chart will show alert color.
This alert corresponds to a Shewhart's rule when set to 2.
Example: Out 2 sigma for k = 2
* k out of 5 pts out of 1 standard deviation of the centerline (same side)
(Test #6 AIAG : k=4)
Triggers an alert if among 5 consecutive points, the number of points above +1 sigma or below -1 sigma is greater than or equal to the value entered ((it provides an "early warning" of a process shift.
Value entered must be less than 5 for points to show up colored otherwise only chart will show alert color.
This alert corresponds to a Shewhart's rule when set to 4.
Example: Out 1 sigma for k = 4
* k points in a row within 1 standard deviation from centerline (either side)
(Test #7 AIAG : k=15)
Detects stratification of subgroups when the observations in a single subgroup come from various sources with different means
* k points in a row out of 1 standard deviation from centerline (either side)
(Test #8 AIAG : k=8)
Detects stratification of subgroups when the observations in one subgroup come from a single source, but subgroups come from different sources with different means
(2) Personalised capability criteria
* k points Out inside specifications
Triggers an alarm when the number of values outside the inside specs reaches or exceeds the value entered (to see the number of samples that do not meet inside LSL/USL)
* k points Out outside specifications
Triggers an alarm when the number of values outside the outside specs reaches or exceeds the value entered (to see the number of samples that do not meet outside LSL/USL)
* Outside application rate is lower than k
Triggers an alert when the application rate on the outside spec is less than the value entered (in order to evaluate performance outside LSL/USL. How long (% of time) we have been applying the specification limits in red range)
Application rate alerts are counted once per variable and the card is displayed in the alert color (no coloring on points themselves).
Example: Outside application rate = 80, Inside application rate = 90
* Inside application rate is lower than k
Triggers an alert when the application rate on inside spec is less than the value entered (in order to evaluate performance inside LSL/USL. How long (% of time) we have been applying the specification limits in yellow range)
* Ppk for inside specifications is lower than k
Triggers an alarm when inside value Ppk value is less than Ppk entered (to see if the process is correctly centered around the target inside LSL/USL)
* Ppk for outside specifications is lower than k
Triggers an alarm when outside value Ppk value is less than Ppk entered (to see if the process is correctly centered around the target outside LSL/USL)
* Pp for inside specifications is lower than k
Triggers an alarm when inside value Pp value is less than Pp entered (to determine the spread of a process inside LSL/USL. Does not consider centering.)
* Pp for outside specifications is lower than k
Triggers an alarm when outside value Pp value is less than Pp entered (to determine the spread of a process outside LSL/USL. Does not consider centering.)
(3) Criteria based on standard deviation from Variance
* k points out of 3 standard deviations from centerline
Triggers an alert when the number of points above +2 sigma or below -2 sigma is greater than or equal to the value entered (to evaluate stability and provides evidence of lack of control)
* k out of 3 pts out of 2 standard deviations from centerline (same side)
Triggers an alert if among 3 consecutive points, the number of points above +2 sigma or below -2 sigma is greater than or equal to the value entered (it provides an "early warning" of a process shift)
* k out of 5 pts out of 1 standard deviation of the centerline (same side)
Triggers an alert if among 5 consecutive points, the number of points above +1 sigma or below -1 sigma is greater than or equal to the value entered (it provides an "early warning" of a process shift).
Yellow alert: Warning! Still in specification but critical - if the value is reached, the points appear in yellow.
Red alert: Point is out of specification - if the value is reached, the respective points appear in red and do not meet the specification limits.