本文件规定了一个验收抽样系统，用于按限制质量（LQ）索引的属性进行检验。取样系统用于隔离批次（隔离批次序列、隔离批次、唯一批次或短系列批次），其中切换规则（如ISO 2859-1）不适用。本文件未提供ISO 2859-1为控制相对检查量而规定的检查水平。在许多可能使用切换规则的工业情况下，由于许多原因，这些规则不适用，但并非所有原因都有效: a） 生产是间歇的（不是连续的）； b） 生产来源多种多样，数量各异，即“工作批量”； c） 地块是孤立的； d） 检查后重新提交批次。 本文件中的抽样计划由一系列限定质量（LQ）的规定值编制索引，其中消费者的风险（LQ的接受概率）通常低于0,10（10%），但在某些情况下除外。 本文件既用于不合格项的检验，也用于每100项不合格项的检验。 当供应商和消费者都认为该批次是孤立的时，可使用该批次。也就是说，这批货是独一无二的，因为它是同类产品中唯一生产的。当一系列批次太短，无法应用切换规则时，也可以使用该方法。

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.