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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 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.
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