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분야 | ISO/TC 69/SC 5 : Acceptance sampling |
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적용범위 | ISO 3951-4:2011 establishes sampling plans and procedures by variables that can be used to assess whether the quality level of an entity (lot, process, etc.) conforms to a declared value. The sampling plans have been devised so that their operating characteristic curves match those of the corresponding attributes plans in ISO 2859-4 as closely as possible, so that the choice between using sampling by attributes and sampling by variables is not influenced by attempts to increase the chance of accepting an incorrectly declared quality level. In this part of ISO 3951, there is a risk of between 1,4 % and 8,2 % of contradicting a correct declared quality level. The risk is 10 % of failing to contradict an incorrect declared quality level which is related to the limiting quality ratio. Sampling plans are provided corresponding to three levels of discriminatory ability, and for the cases of unknown and known process standard deviation. In contrast to the procedures in the other parts of ISO 3951, the procedures in ISO 3951-4:2011 are not applicable to acceptance assessment of lots. Generally, the balancing of the risks of reaching incorrect conclusions in assessment procedures will differ from the balancing in the procedures for acceptance sampling. ISO 3951-4:2011 may be used for various forms of quality inspection in situations where objective evidence of conformity to some declared quality level is to be provided by means of inspection of a sample. The procedures are applicable to entities such as lots, process output, etc. that allow random samples of individual items to be taken from the entity. The sampling plans provided are applicable, but not limited, to inspection of a variety of products such as: end items; components and raw materials; operations; materials in process; supplies in storage; maintenance operations; data or records; administrative procedures. The procedures are intended to be used when the quality characteristics are measurable variables that are independent and normally distributed, and where the quantity of interest is the fraction of items that are nonconforming. |
국제분류(ICS)코드 | 03.120.30 : 통계적 방법의 응용 |
페이지수 | 25 |
Edition | 1 |
No. | 표준번호 | 표준명 | 발행일 | 상태 |
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1 | ISO 3951-4:2011 | Sampling procedures for inspection by variables — Part 4: Procedures for assessment of declared quality levels | 2011-08-04 | 표준 |
ISO 3951-5:2006 - Sampling procedures for inspection by variables — Part 5: Sequential sampling plans indexed by acceptance quality limit (AQL) for inspection by variables (known standard deviation) 상세보기
ISO 3951-3:2007 - Sampling procedures for inspection by variables — Part 3: Double sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection 상세보기
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 상세보기
ISO 3951-1:2022 - 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 상세보기
ISO 3951-6:2023 - Sampling procedures for inspection by variables — Part 6: Specification for single sampling plans for isolated lot inspection indexed by limiting quality (LQ) 상세보기
ISO 12686:1999 - Metallic and other inorganic coatings -- Automated controlled shot-peening of metallic articles prior to nickel, autocatalytic nickel or chromium plating, or as a final finish 상세보기
ISO 5725-5:1998 - Accuracy (trueness and precision) of measurement methods and results -- Part 5: Alternative methods for the determination of the precision of a standard measurement method 상세보기
DIN EN 13473-3:2001-11 - Reinforcement - Specifications for multi-axial multi-ply fabrics - Part 3: Specific requirements; English version of DIN EN 13473-3 상세보기
DIN EN 13473-2:2001-11 - Reinforcement - Specifications for multi-axial multi-ply fabrics - Part 2: Methods of test and general requirements; English version of DIN EN 13473-2 상세보기
DIN EN 13473-1:2001-11 - Reinforcement - Specifications for multi-axial multi-ply fabrics - Part 1: Designation; English version of DIN EN 13473-1 상세보기
IEC TS 63134:2020 - Active assisted living (AAL) use cases 상세보기
IEC 60034-5:2020 RLV - Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification 상세보기
KS B ISO TS 25740-1 - 에스컬레이터 및 무빙워크에 대한 안전요건 — 제1부: 세계공통 필수 안전요건(GESRs) 상세보기
KS B ISO TS 8100-21 - 승객 및 화물 운송용 엘리베이터 —제21부: 세계공통 필수안전요건(GESRs)을 충족하는 세계공통 안전 파라미터(GSPs) 상세보기
KS C IEC TS 62872 - 산업 시설과 스마트 그리드 사이의 산업 공정 측정, 제어 및 자동화 시스템 인터페이스 상세보기