水质.采样.第21部分:利用容器或非配水管的方式进行饮用水分配取样导则

[中文适用范围]： ISO 5667 的这一部分制定了适用于饮用水以及食品和饮料产品制造中使用的水取样技术的原则。 ISO 5667 本部分给出的指导通常仅限于从市政或类似公共或私人抽取、处理或分配系统抽取水的情况，这些系统的事先处理或质量评估已导致水被归类为适合饮用的水或饮用水加工目的。 具体来说，ISO 5667 的这一部分适用于由油轮或其他非连续散装方式供应的水，但不连续作为管道分配系统的一部分，在使用阶段直至（包括消费或转移点）到管道分配系统。 ISO 5667 的这一部分还适用于飞机、卡车、火车、轮船以及其他船舶和车辆上的水分配和批量存储，以及在系统缺陷调查、启动新系统过程中可能出现的采样情况。 系统、重新启动长期未使用的系统或在不危及采样操作人员安全的紧急情况下。 ISO 5667 的本部分不提供以下方面的指导： a) 源水采样，例如地下水和蓄水池； b) 对 ISO 5667-5 涵盖的连续管道供应的饮用水进行采样； c) 对饮料产品（包括瓶装水）或制备过程中使用的含有饮用水的食品进行取样； d) 饮料自动售货机的抽样。 [外文原描述]： ISO 5667-21:2010 establishes principles to be applied to the techniques of sampling water provided for drinking and for use in the manufacture of food and beverage products. The guidance given in ISO 5667-21:2010 is generally confined to those circumstances where water is drawn from municipal or similar public or private abstraction, treatment or distribution systems for which prior treatment or quality assessment has resulted in the water being classified as suitable for drinking or potable process purposes. Specifically, ISO 5667-21:2010 is applicable to water that is supplied by tanker or other non-contiguous bulk means, but not contiguously as part of a piped distribution system, during any stage of use up to and including the point of consumption or transfer to a piped distribution system. ISO 5667-21:2010 is also applicable to the distribution and bulk storage of water on aircraft, trucks, trains, ships, and other vessels and vehicles, as well as to sampling situations that can arise during the investigation of system defects, initiation of new systems, re-initiation of systems that have been unused for long periods or emergency situations where the safety of sampling operatives is not compromised. ISO 5667-21:2010 does not provide guidance on: a) the sampling of source water, e.g. groundwater and impoundments; b) the sampling of potable water supplies derived from contiguous piped supplies covered by ISO 5667-5; c) the sampling of beverage products (including bottled waters) or food containing potable water used in its preparation; d) the sampling of drink vending machines.