1.1 本规程涵盖了创建和维护用于测试保护涂层或内衬的严重废水分析测试设备所需的基本设备、程序和条件。 1.2 该装置可以模拟典型的生活重度废水顶部空间（下水道）环境的相关属性。试验室包括两个阶段:( 1. )含有规定的酸和盐水溶液的液相，以及( 2. )由空气、湿气和浓下水道气体组成的气相( 注1 )。试验室的温度升高以产生加速的条件和反应速率。 注1: 就本实践而言，下水道气体由硫化氢、二氧化碳和甲烷气体组成。 1.3 小心- 这种做法可能极其危险。使用下水道气体、硫酸和玻璃罐时，需要采取所有必要的预防措施。强烈建议由在硫化氢、二氧化碳和甲烷气体测试方面经验丰富的专业测试实验室执行此操作。 1.4 以英寸磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 第节中给出了一些具体的危险说明 8. 关于危险。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 由于生物硫化物腐蚀过程中产生的下水道气体和硫酸的存在，生活污水顶部空间环境具有腐蚀性。 5. 该操作程序提供了加速暴露于下水道气体和这些下水道环境中细菌通常产生的硫酸浓度。 6. 5.2 通过使用该实践获得的结果可以作为估计在恶劣下水道条件下使用的保护涂层或衬里的保护屏障质量的手段。 5.3 一些保护涂层或衬里可能无法承受本规范中规定的暴露温度，但在较低温度下的实际下水道暴露中表现出令人满意的性能。

1.1 This practice covers the basic apparatus, procedures, and conditions required to create and maintain the severe wastewater analysis testing apparatus used for testing a protective coating or lining. 1.2 This apparatus may simulate the pertinent attributes of a typical domestic severe wastewater headspace (sewer) environment. The testing chamber comprises two phases: ( 1 ) a liquid phase containing a prescribed acid and saline solution, and ( 2 ) a vapor phase consisting of air, humidity, and concentrated sewer gas ( Note 1 ). The temperature of the test chamber is elevated to create accelerated conditions and reaction rates. Note 1: For the purposes of this practice, sewer gas is composed of hydrogen sulfide, carbon dioxide, and methane gas. 1.3 Caution— This practice can be extremely hazardous. All necessary precautions need to be taken when working with sewer gas, sulfuric acid, and a glass tank. It is highly recommended that a professional testing laboratory experienced in testing with hydrogen sulfide, carbon dioxide, and methane gases perform this practice. 1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 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. Some specific hazards statements are given in Section 8 on Hazards. 1.6 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 Domestic wastewater headspace environments are corrosive due to the presence of sewer gases and sulfuric acid generated during the biogenic sulfide corrosion process. 5 This operating procedure provides an accelerated exposure to sewer gases and concentration of sulfuric acid commonly produced by bacteria within these sewer environments. 6 5.2 The results obtained by the use of this practice can be a means for estimating the protective barrier qualities of a protective coating or lining for use in severe sewer conditions. 5.3 Some protective coatings or linings may not withstand the exposure temperature specified in this practice but have demonstrated satisfactory performance in actual sewer exposures, which are at lower temperatures.