ASQ B1/B2/B3:1996

ASQC B1-1996, Guide for quality control charts1 Scope2 The control chart3 Specification limits4 Control limits5 Variation of quality - assignable causes6 State of control7 Practical advantages of a state of control8 Establishment of control limits9 Principal uses of the control chart10 Use of the control chart for judging whether control exists11 Use of the control chart for attaining and maintaining control of qualityASQC B2-1996, Control chart method of analyzing data1 Scope2 Nature of the data used3 Computation of the statistical measures4 Types of control charts5 Construction of a control chart6 General instructions for control chart method7 Choice of control limitsASQC B3-1996 Control chart method of controlling quality during production1 Introduction1.1 Scope1.2 Two purposes of inspection1.3 Decrease in lot by lot inspection accruing from statistical control1.4 Quality characteristics requiring sampling inspection1.5 Need for keeping records of quality1.6 Different types of inspection data2 Preliminary steps in setting up a control procedure2.1 Choice of quality characteristics2.2 Analysis of the production process2.3 Planning how to collect and subgroup data2.4 Choice of statistical measures3 Starting the control chart3.1 Collection and analysis of preliminary data3.2 Establishment of control limits - general - standard values3.3 Establishment of control limits - charts for X bar and s3.4 Establishment of control limits - charts for X bar and R3.5 Establishment of control limits - chart for p or pn3.6 Establishment of control limits - chart for c3.7 Preparing the control chart for use4 Using the control chart during production4.1 Plotting points on the control chart; taking action4.2 When control may be assumed to exist4.3 Review of control chart standards4.4 Control chart records5 Illustrative examples5.1 Example 1 - Control chart using X bar and R - Control procedure illustrated step by step5.2 Example 2 - Control chart using X only - Process control problem5.3 Example 3 - Control chart using fraction nonconforming p - Control of spoilage, 100-percent inspection of a product consisting of individual units5.4 Example 4 - Control chart using X bar and R - Control of spoilage for a bulk product6 Glossary of symbols and termsAppendix A - Factors for computing probability control limitsAppendix B - References

This standard is intended as guide for handling problems concerning the economic control of quality of materials, manufactured products and services, etc.

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