1.1 本规程适用于冷凝蒸汽或水（如锅炉给水）的取样，以使用0.45μm膜过滤器（悬浮固体）和离子交换介质（离子固体）收集悬浮固体和（可选）离子固体。由于在大多数锅炉给水中发现的主要悬浮成分是来自预锅炉系统的某种形式的腐蚀产物，因此用于此实践的设备通常称为腐蚀产物采样器。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 锅炉前循环中任何悬浮固体或腐蚀产物的运输对所有类型的蒸汽发生设备都是有害的。低至10 ppb的腐蚀产物运输会对蒸汽发生器的性能产生重大影响。 5.2 压水堆（PWR）蒸汽发生器管上沉积的腐蚀产物可以减少传热，如果沉积物足够厚，则可以提供局部区域，使散装水中的杂质浓缩，从而形成腐蚀环境。 在沸水反应堆（BWR）电站中，腐蚀产物的运输可能导致燃料失效、活化反应引起的堆外辐射问题以及其他与材料相关的问题。 5.3 在化石电站中，腐蚀产物的运输可以减少锅炉中的热传递，从而导致过热导致的管道故障。通过化学清洗去除这些腐蚀产物的成本很高，并且可能对锅炉管有害。 5.4 通常，抓取的样本不够敏感，无法检测腐蚀产物运输水平的变化。此外，仅采集抓取样本可能会错过系统瞬态。随着时间的推移，一个完整的样本将提高检测腐蚀产物的灵敏度，并更好地了解腐蚀产物输送到蒸汽发生器的总量。

1.1 This practice is applicable for sampling condensed steam or water, such as boiler feedwater, for the collection of suspended solids and (optional) ionic solids using a 0.45-μm membrane filter (suspended solids) and ion exchange media (ionic solids). As the major suspended component found in most boiler feedwaters is some form of corrosion product from the preboiler system, the device used for this practice is commonly called a corrosion product sampler. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 The transport of any suspended solids or corrosion products from the preboiler cycle has been shown to be detrimental to all types of steam generating equipment. Corrosion product transport as low as 10 ppb can have significant impact on steam generators performance. 5.2 Deposited corrosion products on pressurized water reactor (PWR) steam generator tubes can reduce heat transfer, and, if the deposit is sufficiently thick, can provide a local area for impurities in the bulk water to concentrate, resulting in a corrosive environment. In boiling water reactor (BWR) plants, the transport of corrosion products can cause fuel failure, out of core radiation problems from activation reactions, and other material related problems. 5.3 In fossil plants, the transport of corrosion products can reduce heat transfer in the boilers leading to tube failures from overheating. The removal of these corrosion products by chemical cleaning is expensive and potentially harmful to the boiler tubes. 5.4 Normally, grab samples are not sensitive enough to detect changes in the level of corrosion product transport. Also, system transients may be missed by only taking grab samples. An integrated sample over time will increase the sensitivity for detecting the corrosion products and provide a better understanding of the total corrosion product transport to steam generators.