BS 5701:1980
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Guide to number-defective charts for quality control
Hardcopy , PDF
English
29-02-1980
31-10-2003
Foreword
Cooperating organizations
Guide
0 Introduction
1 Scope and field of application
2 References
3 Definitions
4 The first control chart
5 Extending the use of control charts
5.1 The basis of a number-defective control chart
5.2 Taking samples
5.3 Sample size and sampling intervals
5.4 Setting control limits
5.5 Points to remember
6 Refinements in control chart operation and special
types of chart
6.1 General
6.2 Two-way control charts
6.3 Further considerations
7 Tables and instruction sheets
Appendix
A The design of control charts for taking account of
the process variability relative to the
specification limits
Tables
1 Control limits
2 Sample sizes and control limits for compressed-
limit charts
3 Procedure for constructing and using two-way
control charts
4 Procedure for constructing and using a compressed-
limit control chart, with examination by gauging
5 Procedure for constructing and using a compressed-
limit control chart, with examination by
measurement and comparison with a standard
Figures
1 Typical number-defective chart
2 Number of defectives actually found in consecutive
samples when approximately one defective was
expected per sample
3 Curves showing theoretical probability that m or
more defectives will be found in a sample, for
different values of m
4 To show how sampling from individual production
units can aid judgement
5 Specimen two-way chart
6 Specimen two-way chart demonstrating out-of-control
condition
7 Control chart of assembling galvanized steel
dustbins
8 Control chart of lamination pressings from nickel-
iron strip
9 Two-way control chart of cutting glass plates
10 Compressed limit two-way chart of press tool
operation, examination by gauging
11 Compressed limit two-way chart of weighing plastics
moulded pellets, examination by measurement
12 Interpretation of distributions
Describes the simplest method of statistical quality control by examination for the number of defectives in samples taken from a process that produces individual units of product rather than a continuous product. Accepted methods of charting which are easy to use and may safely and profitably replace 100% routine examinations.
| Committee |
MS/6
|
| DevelopmentNote |
REPLACES BS 1313: 1974
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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