BS 6001-4:2005, ISO 2859-5:2005 - Sampling procedures for inspection by attributes. System of sequential sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection – BSI British Standards

BS 6001-4:2005, ISO 2859-5:2005

Sampling procedures for inspection by attributes. System of sequential sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection

Status : Current, Under review   Published : August 2005

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This part of ISO 2859 specifies sequential sampling schemes that supplement the ISO 2859-1 acceptance sampling system for inspection by attributes.

The ISO 2859-1 acceptance sampling system is indexed in terms of the acceptance quality limit (AQL). Its purpose is to induce a supplier, through the economic and psychological pressure of lot non-acceptance, to maintain a process average at least as good as the specified acceptance quality limit, while at the same time providing an upper limit for the risk to the consumer of accepting the occasional poor lot.

The sampling schemes defined in this part of ISO 2859 are applicable, but not limited, to the inspection of:

  • end items,
  • components and raw materials,
  • operations,
  • materials in process,
  • supplies in storage,
  • maintenance operations,
  • data or records, and
  • administrative procedures.

These schemes are designed to be applied to a continuing series of lots, that is, a series long enough to permit the switching rules in 10.3 to be applied. These switching rules provide

  • enhanced protection to the consumer (by means of tightened sampling inspection criteria or
    discontinuation of sampling inspection) should deterioration in quality occur,
  • an incentive, at the discretion of the responsible authority, to reduce inspection costs (by means ofreduced sampling inspection criteria) should consistently good quality be demonstrated over time.

The individual sampling plans are not designed to be used outside of the schemes in which they are presented. Where lots are produced in isolation or in a series too short for this part of ISO 2859 to apply, the user is advised to consult ISO 2859-2 for appropriate sampling plans.




Standard NumberBS 6001-4:2005, ISO 2859-5:2005
TitleSampling procedures for inspection by attributes. System of sequential sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection
StatusCurrent, Under review
Publication Date04 August 2005
Normative References(Required to achieve compliance to this standard)ISO 3534-2, ISO 2859-1:1999
Informative References(Provided for Information)ISO 2859-3, ISO 2859-2:1985, ISO/TR 8550:1994, ISO 3534-1, ISO 2859-1, ISO 2859-5:2004, BS ISO 8422, ISO 8422:1991, ISO 8423:1991, ISO 2859
ReplacesBS 6001-4:1994, ISO 8422:1991
International RelationshipsISO 2859-5:2005
Amended ByAMD 16506
Corrigendum, June 2006
DescriptorsSamples, Acceptance inspection, Sampling tables, Mathematical calculations, Sequential sampling, Sampling methods, Inspection by attributes, Statistical quality control, Quality assurance, Quality control, Inspection
ICS03.120.30
CommitteeSS/5
ISBN0 580 46463 6
PublisherBSI
FormatA4
DeliveryYes
Pages52
File Size0.9932 MB
Price£254.00


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