1.1 本试验方法涵盖了用于现场废水处理、油脂拦截、砂砾/油分离、储水或其他需要防水施工和安装的应用的预制混凝土罐（和安装的附件）的试验程序。该试验方法使用部分真空来证明安装材料和施工过程的完整性。 1.2 本试验方法旨在证明回填前已安装系统（预制混凝土罐和附件）的状况。 1.3 在回填之前对系统进行测试是必要的，以防止测试过程中系统组件的意外结构过载。 注1: 该试验方法中提出的真空试验标准与一般使用的标准相似。 该测试和标准已被广泛且成功地用于测试《测试方法》中规定的检修孔 C1244/C1244米 . 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 本标准并不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。 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 这不是例行测试。记录的值仅适用于正在测试的储罐和测试时的储罐。本试验仅用于证明已安装系统的密封有效性。储罐的结构设计在其他适用规范和测试方法的范围内进行定义或证明，包括规范 C1227 .

1.1 This test method covers procedures for testing precast concrete tanks (and installed accessories) used for on-site wastewater treatment, grease interception, grit/oil separation, water storage, or other applications requiring watertight construction and installation. This test method uses partial vacuum to demonstrate the integrity of the installed materials and the construction processes. 1.2 This test method is intended to be used to demonstrate the condition of the installed system (precast concrete tank and accessories) prior to backfill. 1.3 Testing of the system before backfill is necessary so as to preclude inadvertent structural overloading of the system components during the test. Note 1: Vacuum test criteria presented in this test method are similar to those in general use. The test and criteria have been widely and successfully used in testing manholes as specified in Test Method C1244/C1244M . 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. 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 This is not a routine test. The values recorded are applicable only to the tank being tested and at the time of testing. This test is intended only to demonstrate the sealing effectiveness of the installed system. Structural design of the tank is defined or demonstrated within the scope of other applicable specifications and test methods, including Specification C1227 .