The Practical Application of the Process Capability Study : Evolving From Product Control to Process Control book cover
1st Edition

The Practical Application of the Process Capability Study
Evolving From Product Control to Process Control

ISBN 9781439847787
Published January 28, 2011 by Productivity Press
163 Pages 38 B/W Illustrations

FREE Standard Shipping
USD $48.95

Prices & shipping based on shipping country


Book Description

This book shows readers how to use the process capability study to increase return on investment from their statistical process control/Six Sigma effort and make their company more competitive. It provides benefits to every department within a manufacturing organization.

Table of Contents

A Review of Basic Concepts

Specifications Revisited

Process Control Chart vs. Product Control Chart

Process Capability Study Defined

A Shop Floor Example of Process Control

A Short Course in Variation

Stability and the Normal Curve

Study the Product to Understand the Process

Product Control Chart and Process Stability

Product Control Chart and Process Capability

The Simple Number Describing Process Capability

Can a Process be Instable but Capable

Performing a Process Capability Study

A Simple Flow Diagram

The Need for a Qualified Measurement System

Shop Floor Interface

Equipment Walk About

Data Collection

The Available Excel Sheet

Reviewing Results with Management and Shop Floor Associates

After the Process Capability Study Is Complete

How to Address Instability

How to Address a Lack of Capability

Follow Up on a Stable and Capable Process

The Twenty Minute Measurement Analysis

Shop Floor Involvement

The Available Excel Sheet

Chapter Five

The Process Capability as a Purchasing Tool

The Process Capability Study as a Sales and Marketing Tool

The Process Capability Study as a Shop Floor Problem Solving Tool


View More



Douglas B. Relyea is the founder and senior partner of Quality Principle Associates, a consulting firm based in Norwich, Connecticut that specializes in the education and application of data analysis techniques to industrial/organizational problem solving.


… the book has many great examples and case histories that provide insight into the methods the author has employed over at least the past 30 years. …
—Dean Neubauer, Journal of Quality Technology, Vol. 43, No. 3, July 2011

The techniques described in this book are essential for the long-term survival of any manufacturer or service provider.
—Tom Oringderff, Senior Quality Control Engineer (retired)

The measurement process analysis technique (MPA) helped us realize many critical product characteristics were far more capable (less variation) than we previously thought. [Doug’s book] reduced inspection, rework, and scrap and overall improved our competitiveness.
—Jerry Cates, Corporate Vice President, Corning Cable Systems, Hickory, North Carolina (retired)