Guidance on the selection and usage of acceptance sampling systems for inspection of discrete items in lots — Part 1: Acceptance sampling
lotsPart 1:验收抽样中离散项目检验用验收抽样系统的选择和使用指南
发布日期:
2007-06-05
ISO TR 8550-1:2007给出了验收取样系统、方案或计划选择的一般指南。它主要是在已经存在或正在开发的标准的背景下进行的。
本指南仅限于对批量供应的产品进行验收抽样,这些产品可被归类为由离散物品(即产品的离散物品)组成。假设一个批次中的每个项目都可以识别,并与该批次中的其他项目分开,并且有同等的机会包含在样本中。产品的每一项都是可计数的,并且具有特定的特性,这些特性是可测量的,或可归类为符合或不符合(给定的产品规范)。
验收抽样标准通常是通用的,因此可适用于各种各样的检验情况。
这些包括但不限于以下内容:终产品,如完整产品或子组件;零部件和原材料;服务;在制材料;库存物资;维护操作;数据或记录;以及行政程序。
尽管ISO TR 8550-1:2007主要是从制造和生产的角度编写的,但这一点应作自由的解释,因为它适用于ISO 9000中定义的所有类型产品和过程的取样系统、方案和计划的选择。
ISO TR 8550-1:2007 gives general guidance on the selection of an acceptance sampling system, scheme or plan. It does this principally in the context of standards that either already exist or are presently under development.
The guidance is confined to acceptance sampling of products that are supplied in lots and that can be classified as consisting of discrete items (i.e. discrete articles of product). It is assumed that each item in a lot can be identified and segregated from the other items in the lot and has an equal chance of being included in the sample. Each item of product is countable and has specific characteristics that are measurable or classifiable as being conforming or nonconforming (to a given product specification).
Standards on acceptance sampling are typically generic, as a result of which they can be applied to a wide variety of inspection situations. These include, but are not limited to, the following: end items, such as complete products or sub-assemblies; components and raw materials; services; materials in process; supplies in storage; maintenance operations; data or records; and administrative procedures.
Although ISO TR 8550-1:2007 is written principally in terms of manufacture and production, this should be interpreted liberally, as it is applicable to the selection of sampling systems, schemes and plans for all types of products and processes as defined in ISO 9000.