Smith, Gordon E. (1992, ASQC) Massey University, Palmerston North, New Zealand
- Annual Quality Congress, Nashville TN Vol. 46 No. 0
- QICID: 9905 May 1992 pp. 849-854
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Clause 4.20 in ISO9001 states: "Where appropriate, the supplier shall establish procedures for identifying adequate statistical techniques required for verifying the acceptability of process capability and product characteristics." How does one decide when such procedures are appropriate? What statistical techniques are adequate? What constitutes verification?
The author presents a seven-stage approach to answering these questions:
For each step, the author provides an audit checklist to determine whether the step has been performed adequately. The checklist is appropriate both to someone performing the verification process and to an auditor checking that process. It provides a common ground from which both sides can understand the requirements of the verification task.
- selection of important characteristics,
- selection of measurement methods,
- selection of statistical techniques,
- recording and reporting results,
- establishing control methods,
- ongoing verification,
- building specific work instructions.
Audit checklist,ISO 9000,Statistics,Verification
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