
Statistical Process Control (SPC) Quality Rating
1 SCOPE
This document is intended to be a tool for a customer or supplier organization’s internal audit group to assess a statistical process control (SPC) system against the requirements of IPC-9191. This document should be used by customers and suppliers of any size and for any commodity. This document should be used by trained evaluators. This tool can be used to perform an assessment of the use of SPC at both organizational and process levels.
The questions in this evaluation form are based on the guidelines for SPC implementation given in IPC-9191. IPC-9191 was developed to reflect the principals of SPC represented by the International Organization for Standardization (ISO) Statistical Methods Technical Committee’s document: ISO 11462-1. Auditors should also have a fundamental understanding of statistics and their application in manufacturing.
This audit tool should be scaled to each individual organization’s unique situation and resources by using the not applicable (N/A) response in areas of this quality rating.
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