ISO 3951-3:2007
Current
The latest, up-to-date edition.
Sampling procedures for inspection by variables Part 3: Double sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
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English
26-04-2007
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ISO 3951-3:2007 specifies an acceptance sampling system of double sampling schemes for inspection by variables for percent nonconforming. It is indexed in terms of the acceptance quality limit (AQL).
The objectives of the methods laid down in ISO 3951-3:2007 are to ensure that lots of acceptable quality have a high probability of acceptance and that the probability of non-accepting inferior lots is as high as practicable. This is achieved by means of the switching rules, which provide automatic protection to the consumer (by means of a switch to tightened inspection or discontinuation of sampling inspection) should a deterioration in quality be detected, and an incentive (at the discretion of the responsible authority) to reduce inspection costs (by means of a switch to a smaller sample size) should consistently good quality be achieved.
In ISO 3951-3:2007, the acceptability of a lot is implicitly or explicitly determined from an estimate of the percentage of nonconforming items in the process, based on either one or two random samples of items from the lot.
ISO 3951-3:2007 is primarily designed for use under the following conditions: where the inspection procedure is to be applied to a continuing series of lots of discrete products all supplied by one producer using one production process; where the items of product have a single quality characteristic; where the quality characteristic is measurable on a continuous scale; where the measurement error is negligible (i.e. with a standard deviation no more than 10 % of the corresponding process standard deviation); where production is stable (under statistical control) and the quality characteristic is distributed, at least to a close approximation, according to a normal distribution; where the possibility of having to select and inspect a second sample is administratively acceptable; and where a contract or standard defines an upper specification limit, a lower specification limit, or both on the quality characteristic.
The procedures in ISO 3951-3:2007 are not suitable for application to lots that have been screened previously for nonconforming items.
| DevelopmentNote |
Supersedes ISO/DIS 3951-3. (04/2007)
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| DocumentType |
Standard
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| Pages |
113
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| PublisherName |
International Organization for Standardization
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| Status |
Current
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| Standards | Relationship |
| NEN ISO 3951-3 : 2007 | Identical |
| UNI ISO 3951-3 : 2007 | Identical |
| GOST R ISO 3951-3 : 2009 | Identical |
| DD CEN ISO/TS 22391-7:2011 | Plastics piping systems for hot and cold water installations. Polyethylene of raised temperature resistance (PE-RT) Guidance for the assessment of conformity |
| 08/30169985 DC : DRAFT FEB 2008 | BS ISO 17832 - UNPARALLELED STEEL WIRE AND CORDS FOR TYRE REINFORCEMENT |
| BS ISO 3534-2:2006 | Statistics. Vocabulary and symbols Applied statistics |
| UNI CEN ISO/TS 22391-7 : 2012 | PLASTICS PIPING SYSTEMS FOR HOT AND COLD WATER INSTALLATIONS - POLYETHYLENE OF RAISED TEMPERATURE RESISTANCE (PE-RT) - PART 7: GUIDANCE FOR THE ASSESSMENT OF CONFORMITY |
| EN 61193-3:2013 | Quality assessment systems - Part 3: Selection and use of sampling plans for printed board and laminate end-product and in-process auditing |
| PD CEN/TS 1401-2:2012 | Plastics piping systems for non-pressure underground drainage and sewerage. Unplasticized poly(vinyl chloride) (PVC-U) Guidance for assessment of conformity |
| CAN/CSA-ISO/IEC 15415:13 (R2017) | Information technology - Automatic identification and data capture techniques - Bar code symbol print quality test specification - Two-dimensional symbols (Adopted ISO/IEC 15415:2011, second edition, 2011-12-15) |
| I.S. EN 61193-3:2013 | QUALITY ASSESSMENT SYSTEMS - PART 3: SELECTION AND USE OF SAMPLING PLANS FOR PRINTED BOARD AND LAMINATE END-PRODUCT AND IN-PROCESS AUDITING (IEC 61193-3:2013 (EQV)) |
| S.R. CEN/TS 1401-2:2012 | PLASTICS PIPING SYSTEMS FOR NON-PRESSURE UNDERGROUND DRAINAGE AND SEWERAGE - UNPLASTICIZED POLY(VINYL CHLORIDE) (PVC-U) - PART 2: GUIDANCE FOR ASSESSMENT OF CONFORMITY |
| CEN ISO/TS 22391-7:2011 | Plastics piping systems for hot and cold water installations - Polyethylene of raised temperature resistance (PE-RT) - Part 7: Guidance for the assessment of conformity (ISO/TS 22391-7:2011) |
| UNI ISO/TR 18532 : 2010 | Guide to the application of statistical methods for quality and standardization in the industrial sector |
| BS EN 61193-3:2013 | Quality assessment systems Selection and use of sampling plans for printed board and laminate end-product and in-process auditing |
| CSA ISO/IEC 15415:2013 | INFORMATION TECHNOLOGY - AUTOMATIC IDENTIFICATION AND DATA CAPTURE TECHNIQUES - BAR CODE SYMBOL PRINT QUALITY TEST SPECIFICATION - TWO-DIMENSIONAL SYMBOLS |
| UNI ISO 3534-2 : 2014 | STATISTICS - VOCABULARY AND SYMBOLS - PART 2: APPLIED STATISTICS |
| UNI ISO/TR 8550-3 : 2014 | GUIDANCE ON THE SELECTION AND USAGE OF ACCEPTANCE SAMPLING SYSTEMS FOR INSPECTION OF DISCRETE ITEMS IN LOTS - PART 3: SAMPLING BY VARIABLES |
| ISO/TS 22391-7:2011 | Plastics piping systems for hot and cold water installations Polyethylene of raised temperature resistance (PE-RT) Part 7: Guidance for the assessment of conformity |
| 16/30334846 DC : 0 | BS ISO 17832 - NON-PARALLEL STEEL WIRE AND CORDS FOR TYRE REINFORCEMENT |
| BS ISO/IEC 15415:2011 | Information technology. Automatic identification and data capture techniques. Bar code symbol print quality test specification. Two-dimensional symbols |
| BS ISO 17832:2009 | Non-parallel steel wire and cords for tyre reinforcement |
| ISO 17832:2009 | Non-parallel steel wire and cords for tyre reinforcement |
| ISO/IEC 15415:2011 | Information technology Automatic identification and data capture techniques Bar code symbol print quality test specification Two-dimensional symbols |
| ISO/TR 8550-3:2007 | Guidance on the selection and usage of acceptance sampling systems for inspection of discrete items in lots Part 3: Sampling by variables |
| ISO/TR 18532:2009 | Guidance on the application of statistical methods to quality and to industrial standardization |
| IEC 61193-3:2013 | Quality assessment systems - Part 3: Selection and use of sampling plans for printed board and laminate end-product and in-process auditing |
| CEN/TS 1401-2:2012 | Plastics piping systems for non-pressure underground drainage and sewerage - Unplasticized poly(vinyl chloride) (PVC-U) - Part 2: Guidance for assessment of conformity |
| UNE-ISO 3534-2:2013 | Statistics -- Vocabulary and symbols -- Part 2: Applied statistics |
| S.R. CEN ISO/TS 22391-7:2011 | PLASTICS PIPING SYSTEMS FOR HOT AND COLD WATER INSTALLATIONS - POLYETHYLENE OF RAISED TEMPERATURE RESISTANCE (PE-RT) - PART 7: GUIDANCE FOR THE ASSESSMENT OF CONFORMITY (ISO/TS 22391-7:2011) |
| UNI CEN/TS 1401-2 : 2012 | PLASTICS PIPING SYSTEMS FOR NON-PRESSURE UNDERGRONUD DRAINAGE AND SEWERAGE - UNPLASTICIZED POLY(VINYL CHLORIDE) (PVC-U) - PART 2: GUIDANCE FOR ASSESSMENT OF CONFORMITY |
| ONORM ONR CEN ISO/TS 22391-7 : 2012 | PLASTICS PIPING SYSTEMS FOR HOT AND COLD WATER INSTALLATIONS - POLYETHYLENE OF RAISED TEMPERATURE RESISTANCE (PE-RT) - PART 7: GUIDANCE FOR THE ASSESSMENT OF CONFORMITY (ISO/TS 22391-7:2011) |
| ISO 3534-2:2006 | Statistics — Vocabulary and symbols — Part 2: Applied statistics |
| AS 2699.2:2020 | Built-in components for masonry construction Connectors and accessories |
| ISO 3951-1:2013 | Sampling procedures for inspection by variables — Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL |
| ISO 2854:1976 | Statistical interpretation of data — Techniques of estimation and tests relating to means and variances |
| ISO 7870:1993 | Control charts General guide and introduction |
| AS ISO 10545.1:2020 | Ceramic tiles Sampling and basis for acceptance |
| ISO 3534-2:2006 | Statistics — Vocabulary and symbols — Part 2: Applied statistics |
| AS 2699.1:2020 | Built-in components for masonry construction Wall ties |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
| AS 2699.3:2020 | Built-in components for masonry construction Lintels and shelf angles (durability requirements) |
| ISO 5479:1997 | Statistical interpretation of data — Tests for departure from the normal distribution |
| ISO 9000:2015 | Quality management systems — Fundamentals and vocabulary |
| ISO 3951-2:2013 | Sampling procedures for inspection by variables — Part 2: General specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection of independent quality characteristics |
| ISO 3534-1:2006 | Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability |
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