1.1 本规程涵盖了质量控制（QC）测量的收集和记录，以确定使用现场便携式能量色散X射线荧光光谱仪（XRF）时仪器性能的可接受水平，以便从建筑物和相关结构内油漆和其他涂层膜的测量中生成铅分类结果。 1.1.1 本规程的目的不是确定是否存在美国或其他司法管辖区主管部门定义的危险。请参阅指南 E2115 以及HUD指南以获取更多信息。 1.2 本临时规程中涵盖的质量控制程序包括校准检查、基板偏差检查和记录收集数据的具体说明，以供以后报告结果时使用。 1.3 由于不同品牌和型号的合适仪器之间存在差异，因此未提供详细的操作说明。 相反，分析员应遵循特定XRF设备制造商提供的说明或其他有关XRF操作的信息来源。 1.4 本规程包含解释性注释，不属于本暂行规程强制性要求的一部分。 1.5 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。 1.6 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 本规程提供了生成和记录QC数据的程序，以确保在铅基涂料（LBP）检查过程中用于收集铅结果以生成铅分类结果时，XRF在整个测试期间在可接受的公差范围内运行。 5.2 本规程旨在补充XRF仪器制造商协议和PCS 4. 通过使用QA和QC程序，在各种可用的现场便携式XRF仪器中提供统一的铅测试实践。 注1: 在美国，应根据正在使用的特定仪器型号的PCS使用用于执行铅基油漆检查的XRF。 5.3 虽然使用本规程收集的QC结果可以保证XRF仪器在可接受的公差范围内运行，但本规程并不确定从XRF测量中获得的分类结果的实际置信度。 5.4 本规程不涉及含铅涂料的试验位置选择或代表性取样。有关测量含铅油漆或其他涂层中铅含量的更多信息，请参阅指南 E2115 和HUD指南，第7章。 5.5 这种做法涉及使用现场便携式XRF仪器，其中可能包含发射X射线和伽马射线的放射性物质。这些仪器只能由经过培训的合格人员使用。 5.6 使用现场便携式XRF仪器测量铅可能无法准确揭示铅含量低但仍有潜在危险。

1.1 This practice covers the collection and documentation of quality control (QC) measurements for determining acceptable levels of instrumental performance when using field-portable energy-dispersive X-ray fluorescence spectrometry devices (XRFs) for the purposes of generating lead classification results from measurements on paint and other coating films within buildings and related structures. 1.1.1 This practice is not designed to determine the presence of a hazard as defined by authorities having jurisdiction in the United States or other jurisdictions. See Guide E2115 and the HUD Guidelines for more information. 1.2 QC procedures covered in this provisional practice include the performance of calibration checks, substrate bias checks, and specific instructions for documenting the collected data for later use in reporting the results. 1.3 No detailed operating instructions are provided because of differences among the various makes and models of suitable instruments. Instead, the analyst is to follow the instructions provided by the manufacturer of the particular XRF device or other relevant sources of information on XRF operation. 1.4 This practice contains notes which are explanatory and are not part of the mandatory requirements of this provisional practice. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 provides procedures to generate and document QC data for ensuring that an XRF is operating within acceptable tolerances throughout the testing period when being used to collect lead results during a lead-based paint (LBP) inspection for the purposes of generating lead classification results. 5.2 This practice is intended to supplement XRF instrument manufacturer protocols and PCSs 4 through the use of QA and QC procedures to provide uniform lead testing practices among the wide variety of available field-portable XRF instruments. Note 1: In the United States, an XRF used to perform a lead-based paint inspection shall be utilized according to the PCS for the particular instrument model in use. 5.3 While the QC results collected using this practice can provide assurances that an XRF instrument is operating within acceptable tolerances, this practice does not determine an actual level of confidence for a classification result obtained from an XRF measurement. 5.4 This practice does not address selection of test locations or representative sampling for leaded paint. Additional information on conducting measurements of lead in leaded paint or other coatings may be found in Guide E2115 and the HUD Guidelines, Chapter 7. 5.5 This practice involves the use of field-portable XRF instruments that may contain radioactive materials that emit X-rays and gamma rays. These instruments are intended for use only by qualified, trained personnel. 5.6 The use of field-portable XRF instruments for measurement of lead may not accurately reveal low but still potentially hazardous levels of lead.