计数检验的抽样程序.审计和先验信息检验的两阶段抽样计划

[中文适用范围]： 本文件规定了按极限质量 (LQ) 指标进行检验的验收抽样系统。抽样系统用于孤立批次（孤立批次序列、孤立批次、唯一批次或短批次系列），其中切换规则（例如 ISO 2859-1 中的规则）不适用。本文件未提供 ISO 2859-1 规定的用于控制相对检验量的检验水平。在许多可能使用切换规则的工业情况下，由于多种原因（并非所有原因都有效），这些规则并未得到应用：a) 生产是间歇性的（非连续性的）；b) 生产来自几个不同来源，数量各不相同，即“工作批次”；c) 批次是孤立的；d) 批次在检验后重新提交。本文件中的抽样计划按一系列指定的极限质量 (LQ) 值进行索引，其中消费者的风险（LQ 的验收概率）通常低于 0.10（10%），但某些情况除外。本文件既可用于不合格品检验，也可用于每 100 件不合格品检验。它适用于供应商和消费者都认为该批次是孤立的情况。也就是说，该批次是独一无二的，因为它是该类型产品中唯一生产的批次。当一系列批次太短而无法应用切换规则时，也可以使用它。 [外文原描述]： This document specifies an acceptance sampling system for inspection by attributes indexed by limiting quality (LQ). The sampling system is used for lots in isolation (isolated sequences of lots, an isolated lot, a unique lot or a short series of lots), where switching rules, such as those of ISO 2859‑1, are not applicable. Inspection levels, as provided by ISO 2859‑1 to control the relative amount of inspection, are not provided in this document. In many industrial situations, in which switching rules might be used, they are not applied for a number of reasons, not all of which might be valid: a) production is intermittent (not continuous); b) production is from several different sources in varying quantities, i.e. "job lots"; c) lots are isolated; d) lots are resubmitted after inspection. The sampling plans in this document are indexed by a series of specified values of limiting quality (LQ), where the consumer's risk (the probability of acceptance at the LQ) is usually below 0,10 (10 %), except in some instances. This document is intended both for inspection for nonconforming items and for inspection for nonconformities per 100 items. It is intended to be used when the supplier and the consumer both regard the lot to be in isolation. That is, the lot is unique in that it is the only one of its type produced. It can also be used when there is a series of lots too short for switching rules to be applied.