The Statistical Process Control Life Cycle


Roth, Glenn   (1988, Marcel Dekker, Inc. and ASQC)   Joseph Pollak Corporation, Boston, MA;

Quality Engineering    Vol. 1    No. 2
QICID: 15058    October 1988    pp. 117-126
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Article Abstract

[This abstract is based on the author's abstract.]

The Statistical Process Control (SPC) life cycle was created as a basic guideline or model for the implementation of statistical process control. The implementation process is approached in a similar way by the individual quality engineer, manufacturing engineer, production person, or whoever is involved with implementing SPC. The SPC life cycle also describes standards for measurement and feedback and establishes a basis for continuing improvement to a "mistake-free process" level. The SPC life cycle was developed in 1982 and has been used at Joseph Pollak Corporation since 1983 with positive results. The SPC life cycle consists of the systematic collection and analysis of data over time for an operation process or collective group of processes. Each operation process goes through eight phases. Capability indices are monitored with minimum requirements at each phase, while analysis and feedback are ongoing. Eight simple steps are used in the analysis to measure milestones against performance. Results are reported through the SPC tree, which is a type of assembly flow with various operations indicated and results recorded and updated on a periodic basis.


Statistical process control (SPC), Implementation, Process capability index (Cpk), Case study, Corrective action, Process capability (Cp)

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