Blog

Technical articles and insights on NEXSPC and Statistical Process Control (SPC).

Keyword "SPC Rule" found 3 articles (current page)

Addressing the Auditor’s Challenge: “Why Haven’t You Used All SPC Out-of-Control Rules?”

This article addresses quality engineers on how to handle auditor questions regarding why all 8 SPC rules aren't used. It argues that indiscriminately using all rules increases Type I errors (false alarms), destroys process stability, and misjudges physical laws. Rules must match process models and be backed by actionable Out-of-Control Action Plans (OCAP) supported by structured data.…

Quality Engineering SPC Statistical Process Control Audit AIAG-VDA Out-of-Control Rules False Alarms Type I Error OCAP Out-of-Control Action Plan Data Structure Traceability CNC Machining Process Stability.
Addressing the Auditor’s Challenge: “Why Haven’t You Used All SPC Out-of-Control Rules?”