1.1 本规程涵盖了现场人员从储罐中采集样本所需遵循的信息。 1.2 本规程的目的是帮助现场人员使用有助于实现采样目标的设备和技术，从立式和卧式储罐、敞口矩形/方形储罐、铁路和卡车罐车、真空卡车和多隔间储罐中规划和获取样本。 1.3 本规程适用于危险材料、产品、原材料、副产品或废物。 1.4 本规程未涉及循环泵排放阀和储罐输送管线的取样。 1.5 单位- 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.6 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。 1.7 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 本规程旨在帮助现场人员从储罐中获取样本，用于实验室分析。由于取样和分析的相关成本以及其他原因，在提交样品进行化学分析、物理测试或两者兼有之前，必须正确采集样品。 不正确的采样可能导致结果数据无效。 5.2 本规程为选择适合特定情况的采样技术和设备提供了指导。建议将本指南用作书面现场采样计划的补充。 5.3 描述了使用COLIWASA、液体轮廓仪取样器、培根炸弹取样器以及蠕动泵和管道对储罐进行采样的程序。

1.1 This practice covers information for field personnel to follow in order to collect samples from tanks. 1.2 The purpose of this practice is to help field personnel in planning and obtaining samples from vertical and horizontal tanks, open-topped rectangular/square tanks, railroad and truck tankers, vacuum trucks, and tanks with multiple compartments using equipment and techniques that will assist in meeting the sampling objectives. 1.3 The practice is applicable to hazardous materials, products, raw materials, by-product, or waste. 1.4 Sampling from circulating pump discharge valves and tank transfer lines is not addressed in this practice. 1.5 Units— The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 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. 1.7 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 This practice is intended to assist field personnel in obtaining samples from tanks for laboratory analysis. The cost associated with sampling and analysis, along with other reasons, make it essential that samples be taken correctly before submitting them for chemical analysis, physical testing, or both. Incorrect sampling can invalidate resulting data. 5.2 This practice provides guidance in choosing the sampling technique and equipment suitable for specific situations. It is recommended that this guide be used as a supplement to a written field sampling plan. 5.3 The procedures for sampling tanks using a COLIWASA, liquid profiler sampler, bacon bomb sampler, and peristaltic pump and tubing are delineated.