ISO 18414:2006 属性进料抽样试验程序-第7部分：基于控制出厂质量控制信任原则的验收-零抽样系统

标准编号：ISO 18414:2006

中文名称：属性进料抽样试验程序-第7部分：基于控制出厂质量控制信任原则的验收-零抽样系统

英文名称：Acceptance sampling procedures by attributes — Accept-zero sampling system based on credit principle for controlling outgoing quality

发布日期：2006-01

标准范围

ISO 18414:2006规定了按属性逐批检验的单次抽样方案体系。系统的所有抽样计划均为“接受零”形式，即如果样本中包含一个或多个不合格项，则不接受任何批次。方案取决于适当定义的平均输出质量限制（AOQL），其值由用户选择；对AOQL值的选择或系列中连续批次的大小没有限制。该方法确保到达客户或市场的总体平均质量从长远来看不会超过AOQL。ISO 18414:2006设计用于以下条件:1）检验程序适用于一系列预期相同且由一个生产商使用一种生产工艺提供的离散项目；2） 考虑到这些产品的一个或多个质量特征，这些质量特征必须全部归类为合格或不合格；3） 产品质量特征状态分类中涉及的检验误差可忽略不计；4）检查是非破坏性的。ISO 18414:2006可适用于监管目的，因为对到达市场的产品的预期质量的控制是通过尽可能小的样本量实现的，而对市场上已实现或实际质量水平的长期控制是确定的，无论单个供应商的系列可能长或短。ISO 18414:2006可供供应商/生产商、买方/消费者和监管机构使用，以控制每种来源的每种类型的合格产品总数的预期质量。

ISO 18414:2006 specifies a system of single sampling schemes for lot-by-lot inspection by attributes. All the sampling plans of the system are of accept-zero form, i.e. no lot is accepted if the sample from it contains one or more nonconforming items. The schemes depend on a suitably-defined average outgoing quality limit (AOQL), the value of which is chosen by the user; no restrictions are placed on the choice of the value of the AOQL or on the sizes of successive lots in the series. The methodology ensures that the overall average quality reaching the customer or market-place will not exceed the AOQL in the long run.ISO 18414:2006 is designed for use under the following conditions: 1) where the inspection procedure is to be applied to a series of lots of discrete items that are intended to be identical, and which are all supplied by one producer using one production process; 2) where one or more quality characteristics of these products are taken into consideration, which must all be classifiable as either conforming or nonconforming; 3) where the inspection error involved in classifying the state of a product's quality characteristic(s) is negligible; and 4) where inspection is non-destructive.ISO 18414:2006 can be suitable for regulatory purposes, as control of the expected quality of items reaching the market-place is achieved with the smallest possible sample sizes, and long-term control of the realized, or actual quality level in the market-place is achieved with certainty, regardless of how long or short individual suppliers' series may be. ISO 18414:2006 can be used by suppliers/producers, buyers/consumers and regulatory agencies to provide control of the expected quality of the totality of accepted product of each type from each source.

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