1.1 本试验方法涵盖交付前预制混凝土管段的试验程序，其中规定了最大现场泄漏率。 1.2 本标准中所述的测试旨在用于混凝土管道的制造点，而不是用于测试已安装的管道（现场测试见实践 C969 和 C1214 ). 建议本规范的用户，在测试多个管段时，可以测试单个或多个管段，以测试管筒以及直线对齐的接头。 1.3 测试时间基于泄漏率，因此仅与管径成比例，并且对于任何长度的测试管或管道都是恒定的。 1.4 本标准中列出的测试时间和空气损失率基于已安装管道的成功测试。然而，由于空气和水具有不同的物理性质，当用水进行测试时，一些不符合现场空气测试的管道的重新测试是成功的。泄漏率为0.0017立方英尺/英尺 2. 和0.0003立方英尺/英尺 2. ，根据经验确定为管道分别满足50和200 gal/（in.内径）（下水道英里）（24小时）试验速率的最大值 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。 注1: 混凝土管道的该测试程序的可用性因位置而异。与当地供应商核实可用性和建议。 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。 参见第节 6. 具体安全预防措施。 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 这是在制造厂进行的质量测试控制，以确定成品可装运管道符合规范中规定的泄漏限值。

1.1 This test method covers procedures for testing of precast concrete pipe sections, prior to delivery, where maximum field leakage rates are specified. 1.2 Tests described in this standard are intended to be used at the point of manufacture of the concrete pipe and are not intended for testing installed pipe (for field tests see Practices C969 and C1214 ). The user of this specification is advised that individual or multiple pipe sections may be tested for the purpose of testing the pipe barrel and additionally the joints in straight alignment when multiple pipe sections are tested. 1.3 Test times are based on leakage rates and therefore are proportional only to the pipe diameter and are constant for any length of test pipe or pipeline. 1.4 Test times tabulated and the rate of air loss in this standard are based on successful testing of installed pipelines. However, since air and water have different physical properties, retests of some pipelines not meeting field air tests have been successful when tested with water. The leakage rates of 0.0017 CFM/ft 2 and 0.0003 CFM/ft 2 , were determined empirically as the maximums for pipe to meet the 50 and 200 gal/(in. of internal diameter) (mile of sewer) (24h) test rates, respectively 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. Note 1: The availability of this test procedure for concrete pipe varies from location to location. Check with local supplier(s) for availability and recommendations. 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. See Section 6 for specific safety precautions. 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 is a quality test control performed at the manufacturing plant to establish that the finished, shippable pipe meets the leakage limits stated in the specifications.