【国外标准】 Standard Guide for Sampling of Drums and Similar Containers by Field Personnel

5.1 This guide is intended to assist field personnel in obtaining samples from drums and similar containers for field and laboratory analysis. The need for accurate data, and the costs associated with sampling and analysis, make it essential that samples be taken correctly before submitting them for chemical analysis or physical testing, or both. Incorrect sampling can invalidate resulting data.5.2 This guide may be used by personnel who have no formal workplan. It draws their attention to issues that must be addressed before, during, and after taking a sample. It provides guidance in choosing the sampling technique and equipment suitable for specific situations. It can serve as a training tool for those who are unfamiliar with sampling. It is recommended that this guide be used as a supplement to a written workplan.5.3 Some sections of this guide contain flow charts (see Figs. 1-5) that must be worked through, starting from the top of each page. By answering the questions in the diamond-shaped boxes, and following the appropriate arrows, the person planning to sample will be guided toward the most suitable procedures and equipment. The numbers at the bottom of some boxes refer to corresponding paragraphs in the text, which provide information to help the person sampling answer the questions.FIG. 8 COLIWASAFIG. 9 Concentric Tube ThiefFIG. 10 DipperFIG. 11 Drum ThiefFIG. 12 Peristaltic PumpsFIG. 13 Scoop, Spoon, TrowelFIG. 14 Syringe SamplerFIG. 15 Trier1.1 This guide covers information, including flow charts, for field personnel to follow in order to collect samples from drums and similar containers.1.2 The purpose of this guide is to help field personnel in planning and obtaining samples from drums and similar containers, using equipment and techniques that will ensure that the objectives of the sampling activity will be met. It can also be used as a training tool.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. See specific warnings in 7.4.3 and 7.4.4.1.4 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.