How to Implement SQC the First Time

Article

ReVelle, Jack B.   (1986, ASQC)   Hughes Aircraft Company, Fullerton, CA

40th Annual Quality Congress, May 1986, Anaheim, CA    Vol. 40    No. 0
QICID: 3247    May 1986    pp. 625-631
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Article Abstract

Whether statistical quality control (SQC) is being implemented for the first time or the fiftieth, specific bases must be touched if a workplace installation is to be successful. This presentation describes in detail each of these necessary bases. It draws heavily upon my Hughes Aircraft Company publication, "The Pocket Guide to Statistical Quality Control," which was initially released in June 1985.This presentation does not review any of the steps which must be taken to implement a company-wide SQC program. This is a related but separate topic which includes SQC training, SQC program administration and inspection capability analysis.Successful SQC implementations in the workplace require that management, first line supervision and touch labor have recently completed SQC training. This training should, as a minimum, include: understanding processes; developing process flow charts; locating process variances; measuring/counting process variances; data collection and reduction; control chart development and interpretation; use of defect maps in conjunction with events logs; and application of problem-solving techniques such as histograms, Pareto analysis, cause and effect analysis, scatter analysis, stratification of independent variables, experimental design and analysis of variance.Following selection of processes requiring the application of SQC techniques and training of personnel to successfully apply these techniques, SQC implementations in the workplace can begin. Once the sources of process variances have been located, corrective actions must be identified and introduced. Impact of the corrective actions on the processes is then monitored using control charts and the never-ending process improvement cycle continues.

Keywords

Chemical and process industries


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