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ISO 28598-2:2017

(Main)

Acceptance sampling procedures based on the allocation of priorities principle (APP) — Part 2: Coordinated single sampling plans for acceptance sampling by attributes

Acceptance sampling procedures based on the allocation of priorities principle (APP) — Part 2: Coordinated single sampling plans for acceptance sampling by attributes

This part of ISO 28598 provides attributes sampling procedures and single sampling plans for successive independent inspections of the same lot conducted by the supplier, customer and/or a third party. This part of ISO 28598 addresses: - supplier inspection (final inspection, product certification upon supplier's request); - customer inspection (incoming inspection, surveillance, acceptance sampling); - third party inspection. This part of ISO 28598 may also be applicable when only one inspection is needed. A catalogue of single sampling plans is given, indexed by the normative quality limits (NQLs). This part of ISO 28598 provides sampling procedures for: - finished product; - components and discrete items; - operations; - discrete items and the processes that produce them; - data and records. Attributes sampling procedures are provided for inspection of an isolated lot or a continuing series of lots of a discrete product. These procedures are applicable when a normative quality limit (NQL) is given and expressed in terms of percent nonconforming or nonconformities per 100 items. This part of ISO 28598 provides a co-ordinated system of supplier, customer and third party acceptance sampling procedures. It is also applicable to the case where a supplier individually, or on agreement with a customer, in a contract, specifies a lot quality criterion expressed in terms of an NQL. In either case, it provides a coherent methodology for designating lots as satisfactory or unsatisfactory for shipment and proposed use.

Règles d'échantillonnage pour acceptation fondées sur le principe d'attribution de priorités (APP) — Partie 2: Plans d'échantillonnage simple coordonnés pour l'échantillonnage pour acceptation par attributs

L'ISO 28598-2 :2017 de l'ISO 28598 fournit des règles d'échantillonnage par attributs ainsi que des plans d'échantillonnage simple pour des contrôles indépendants successifs du même lot, effectués par le fournisseur, le client et/ou une tierce partie. L'ISO 28598-2 :2017 de l'ISO 28598 traite des aspects suivants: - le contrôle du fournisseur (contrôle final, certification du produit sur demande du fournisseur); - contrôle du client (contrôle de réception, surveillance, échantillonnage pour acceptation); - contrôle d'une tierce partie. L'ISO 28598-2 :2017 de l'ISO 28598 peut également être applicable lorsqu'un seul contrôle se révèle nécessaire. Une liste détaillée de plans d'échantillonnage simple est donnée, indexée par les limites de qualité normatives (LQN). L'ISO 28598-2 :2017 de l'ISO 28598 fournit des règles d'échantillonnage pour les éléments suivants: - le produit fini; - les composants et les unités discrètes; - les opérations; - les unités discrètes et les processus qui les produisent; - les données et les enregistrements. Les règles d'échantillonnage par attributs sont prévues pour le contrôle d'un lot isolé ou d'une série continue de lots d'un produit discret. Ces règles sont applicables lorsqu'un LQN est donné, exprimé en termes de pourcentage de non conformes ou de non-conformités pour 100 individus. L'ISO 28598-2 :2017 de l'ISO 28598 fournit un système coordonné de règles d'échantillonnage pour acceptation relatives au fournisseur, au client et à une tierce partie. Elle est applicable également dans les cas où un fournisseur, de façon individuelle, ou selon un accord avec le client, voire dans un contrat, spécifie un critère de qualité de lot exprimé en termes de LQN. Dans tous les cas, il est fourni une méthodologie cohérente permettant de désigner les lots comme satisfaisants ou non satisfaisants en vue de leur livraison et de leur utilisation proposée.

General Information

Status
Published
Publication Date
16-Oct-2017
ICS
03.120.30 - Application of statistical methods
Technical Committee
ISO/TC 69/SC 5 - Acceptance sampling
Drafting Committee
ISO/TC 69/SC 5 - Acceptance sampling
Current Stage
9093 - International Standard confirmed
Completion Date
13-Jun-2024
Ref Project

Relations

Consolidated By
ISO 80601-2-87:2021 - Medical electrical equipment — Part 2-87: Particular requirements for basic safety and essential performance of high-frequency ventilators
Effective Date
06-Jun-2022
Revises
ISO 13448-2:2004 - Acceptance sampling procedures based on the allocation of priorities principle (APP) — Part 2: Coordinated single sampling plans for acceptance sampling by attributes
Effective Date
04-Nov-2015

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ISO 28598-2:2017 - Acceptance sampling procedures based on the allocation of priorities principle (APP) — Part 2: Coordinated single sampling plans for acceptance sampling by attributes Released:17. 10. 2017ISO 28598-2:2017 - Acceptance sampling procedures based on the allocation of priorities principle (APP) — Part 2: Coordinated single sampling plans for acceptance sampling by attributes Released:17. 10. 2017
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ISO 28598-2:2017 - Acceptance sampling procedures based on the allocation of priorities principle (APP)ISO 28598-2:2017 - Acceptance sampling procedures based on the allocation of priorities principle (APP)
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ISO 28598-2:2017 - Règles d'échantillonnage pour acceptation fondées sur le principe d'attribution de priorités (APP) — Partie 2: Plans d'échantillonnage simple coordonnés pour l'échantillonnage pour acceptation par attributs Released:17. 10. 2017ISO 28598-2:2017 - Règles d'échantillonnage pour acceptation fondées sur le principe d'attribution de priorités (APP) — Partie 2: Plans d'échantillonnage simple coordonnés pour l'échantillonnage pour acceptation par attributs Released:17. 10. 2017
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ISO 28598-2:2017 - Règles d'échantillonnage pour acceptation fondées sur le principe d'attribution de priorités (APP) — Partie 2: Plans d'échantillonnage simple coordonnés pour l'échantillonnage pour acceptation par attributs Released:17. 10. 2017
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Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 28598-2
First edition
2017-10
Acceptance sampling procedures
based on the allocation of priorities
principle (APP) —
Part 2:
Coordinated single sampling plans for
acceptance sampling by attributes
Règles d'échantillonnage pour acceptation fondées sur le principe
d'attribution de priorités (APP) —
Partie 2: Plans d'échantillonnage simple coordonnés pour
l'échantillonnage pour acceptation par attributs
Reference number
ISO 28598-2:2017(E)
©
ISO 2017

---------------------- Page: 1 ----------------------
ISO 28598-2:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 28598-2:2017(E)

Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviations . 2
3.1 Terms and definitions . 2
3.2 Symbols and abbreviations . 3
4 Selection from among sampling systems by attributes . 4
4.1 Relationship between sampling systems . 4
4.2 Suitable environments for applying ISO 28598-2 . 4
4.3 Suitable environments for applying ISO 2859-1, ISO 2859-3 and ISO 28591 . 4
4.4 Suitable environments for applying ISO 2859-2. 4
5 Lot quality . 5
5.1 Lot quality measures . 5
5.2 Satisfactory and unsatisfactory lots . 5
5.3 Types of requirements . 5
5.4 Preferred NQLs . 5
5.5 Disposition of unsatisfactory lots . 5
6 Limits for other party's risk. 6
6.1 Supplier's sampling plans . .
...

INTERNATIONAL ISO
STANDARD 28598-2
First edition
2017-10
Acceptance sampling procedures
based on the allocation of priorities
principle (APP) —
Part 2:
Coordinated single sampling plans for
acceptance sampling by attributes
Règles d'échantillonnage pour acceptation fondées sur le principe
d'attribution de priorités (APP) —
Partie 2: Plans d'échantillonnage simple coordonnés pour
l'échantillonnage pour acceptation par attributs
Reference number
ISO 28598-2:2017(E)
©
ISO 2017

---------------------- Page: 1 ----------------------
ISO 28598-2:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 28598-2:2017(E)

Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviations . 2
3.1 Terms and definitions . 2
3.2 Symbols and abbreviations . 3
4 Selection from among sampling systems by attributes . 4
4.1 Relationship between sampling systems . 4
4.2 Suitable environments for applying ISO 28598-2 . 4
4.3 Suitable environments for applying ISO 2859-1, ISO 2859-3 and ISO 28591 . 4
4.4 Suitable environments for applying ISO 2859-2. 4
5 Lot quality . 5
5.1 Lot quality measures . 5
5.2 Satisfactory and unsatisfactory lots . 5
5.3 Types of requirements . 5
5.4 Preferred NQLs . 5
5.5 Disposition of unsatisfactory lots . 5
6 Limits for other party's risk. 6
6.1 Supplier's sampling plans . .
...

NORME ISO
INTERNATIONALE 28598-2
Première édition
2017-10
Règles d'échantillonnage pour
acceptation fondées sur le principe
d'attribution de priorités (APP) —
Partie 2:
Plans d'échantillonnage simple
coordonnés pour l'échantillonnage
pour acceptation par attributs
Acceptance sampling procedures based on the allocation of priorities
principle (APP) —
Part 2: Coordinated single sampling plans for acceptance sampling by
attributes
Numéro de référence
ISO 28598-2:2017(F)
©
ISO 2017

---------------------- Page: 1 ----------------------
ISO 28598-2:2017(F)

DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2017, Publié en Suisse
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – Tous droits réservés

---------------------- Page: 2 ----------------------
ISO 28598-2:2017(F)

Sommaire Page
Avant-propos .v
Introduction .vii
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes, définitions, symboles et abréviations . 2
3.1 Termes et définitions . 2
3.2 Symboles et abréviations . 3
4 Choix parmi différents systèmes d'échantillonnage par attributs . 4
4.1 Relation entre les systèmes d'échantillonnage . 4
4.2 Environnements convenant à l'application de l'ISO 28598-2 . 4
4.3 Environnements convenant à l'application de l'ISO 2859-1, l'ISO 2859-3 et l'ISO 28591 . 5
4.4 Environnements convenant à l'application de l'ISO 2859-2 . 5
5 Qualité des lots . 5
5.1 Mesures de la qualité des lots . 5
5.2 Lots satisfaisants et lots non satisfaisants . 5
5.3 Types d'exigences . 5
5.4 Limites de qualité normatives préférentielles . 6
5.5 Disposition des lots non satisfaisants . 6
6 Limites applicables au risque de la partie adverse . 6
6.1 Plans d'échantillonnage du fournisseur . 6
6.1.1 Affectation d'un risque du client dans le cas
...

NORME ISO
INTERNATIONALE 28598-2
Première édition
2017-10
Règles d'échantillonnage pour
acceptation fondées sur le principe
d'attribution de priorités (APP) —
Partie 2:
Plans d'échantillonnage simple
coordonnés pour l'échantillonnage
pour acceptation par attributs
Acceptance sampling procedures based on the allocation of priorities
principle (APP) —
Part 2: Coordinated single sampling plans for acceptance sampling by
attributes
Numéro de référence
ISO 28598-2:2017(F)
©
ISO 2017

---------------------- Page: 1 ----------------------
ISO 28598-2:2017(F)

DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2017, Publié en Suisse
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – Tous droits réservés

---------------------- Page: 2 ----------------------
ISO 28598-2:2017(F)

Sommaire Page
Avant-propos .v
Introduction .vii
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes, définitions, symboles et abréviations . 2
3.1 Termes et définitions . 2
3.2 Symboles et abréviations . 3
4 Choix parmi différents systèmes d'échantillonnage par attributs . 4
4.1 Relation entre les systèmes d'échantillonnage . 4
4.2 Environnements convenant à l'application de l'ISO 28598-2 . 4
4.3 Environnements convenant à l'application de l'ISO 2859-1, l'ISO 2859-3 et l'ISO 28591 . 5
4.4 Environnements convenant à l'application de l'ISO 2859-2 . 5
5 Qualité des lots . 5
5.1 Mesures de la qualité des lots . 5
5.2 Lots satisfaisants et lots non satisfaisants . 5
5.3 Types d'exigences . 5
5.4 Limites de qualité normatives préférentielles . 6
5.5 Disposition des lots non satisfaisants . 6
6 Limites applicables au risque de la partie adverse . 6
6.1 Plans d'échantillonnage du fournisseur . 6
6.1.1 Affectation d'un risque du client dans le cas
...

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Double sampling plans by attributes with minimal sample sizes, indexed by producer's risk quality (PRQ) and consumer's risk quality (CRQ)
SIST ISO 28592:2018

ISO 28592:2017 provides double sampling plans by attributes for the acceptance inspection of lots of discrete items. The plans are indexed by the producer's risk quality (PRQ) and the consumer's risk quality (CRQ) where the nominal producer's and consumer's risks are respectively either (5 %, 5 %), (5 %, 10 %) or (10 %, 10 %). Plans are provided for inspection for percent nonconforming and for inspection for nonconformities per 100 items. The lot is accepted if there are no nonconforming items (nonconformities) in the first random sample, and rejected if it contains two or more nonconforming items (nonconformities). If precisely one nonconforming item is found in the first sample, a second random sample is drawn; the lot is then accepted if the second sample contains no nonconforming items (nonconformities) and rejected otherwise. The objective of this International Standard is to provide procedures that enable lot disposition to be determined quickly and economically if quality is particularly good or bad. For intermediate quality, a second sample is drawn in order to be able to discriminate more reliably between acceptable and unacceptable lots. The two sample sizes are chosen to minimize the maximum expected sample size with respect to incoming quality subject to the nominal risks not being exceeded. Similarly, the plans may be used to test the hypothesis that a lot or process quality level is equal to the PRQ (i.e. acceptable) against the alternative hypothesis that the quality level is equal to the CRQ (i.e. unacceptable). The plans are preferable to single sampling plans where the cost of inspection is high, where the delay and uncertainty caused by the possible requirement for second samples is inconsequential and where a relatively large ratio of the consumer's risk quality to the producer's risk quality can be tolerated. The plans are suitable for isolated lots or for short series of lots, where the sum of the two sample sizes is no larger than about 10 % of the size of the lot. The plans are also suitable for continuing series of lots when lots that fail to satisfy the acceptance criteria are 100 % inspected and all nonconforming items replaced by conforming items; however, for continuing series of lots, consideration should also be given to using double sampling plans from ISO 2859‑1. The statistical theory underlying the plans, tables and figures is provided in Annex A.

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ISO
ISO 28590:2017(Main)
Sampling procedures for inspection by attributes — Introduction to the ISO 2859 series of standards for sampling for inspection by attributes
SIST ISO 28590:2018

ISO 28590:2017 provides a general introduction to acceptance sampling by attributes and provides a brief summary of the attribute sampling schemes and plans used in ISO 2859‑1, ISO 2859‑2, ISO 2859‑3, ISO 2859‑4 and ISO 2859‑5, which describe specific types of attribute sampling systems. It also provides guidance on the selection of the appropriate inspection system for use in a particular situation.

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ISO
ISO 28591:2017(Main)
Sequential sampling plans for inspection by attributes
SIST ISO 28591:2018

ISO 28591:2017 specifies sequential sampling plans and procedures for inspection by attributes of discrete items. The plans are indexed in terms of the producer's risk point and the consumer's risk point. Therefore, they can be used not only for the purposes of acceptance sampling, but for a more general purpose of the verification of simple statistical hypotheses for proportions. The purpose of this International Standard is to provide procedures for sequential assessment of inspection results that may be used to induce the supplier, through the economic and psychological pressure of non-acceptance of lots of inferior quality, to supply lots of a quality having a high probability of acceptance. At the same time, the consumer is protected by a prescribed upper limit to the probability of accepting lots of poor quality. ISO 28591:2017 provides sampling plans that are applicable, but not limited, to inspection in different fields, such as: - end items, - components and raw materials, - operations, - materials in process, - supplies in storage, - maintenance operations, - data or records, and - administrative procedures. ISO 28591:2017 contains sampling plans for inspection by attributes of discrete items. The sampling plans may be used when the extent of nonconformity is expressed either in terms of proportion (or percent) nonconforming items or in terms of nonconformities per item (per 100 items). The sampling plans are based on the assumption that nonconformities occur randomly and with statistical independence. There may be good reasons to suspect that one nonconformity in an item could be caused by a condition also likely to cause others. If so, it would be better to consider the items just as conforming or not, and ignore multiple nonconformities. The sampling plans from this International Standard should primarily be used for the analysis of samples taken from processes. For example, they may be used for the acceptance sampling of lots taken from a process that is under statistical control. However, they may also be used for the acceptance sampling of an isolated lot when its size is large, and the expected fraction nonconforming is small (significantly smaller than 10 %). In the case of the acceptance sampling of continuing series of lots, the system of sequential sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection published in ISO 2859‑5 should be applied.

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