1.1 本规程提供了使用低压空气测试非压力塑料污水管的程序，以证明安装材料和施工程序的完整性。计算漏气率包括两个步骤:恒压法和时间压降法。 1.2 在所有连接和服务支路均已塞住并充分支撑以承受试验压力后，在管线上进行该操作。回填作业完成和低压空气测试之间的时间可由审批机关规定。 1.3 本规程用作初步试验，使安装人员能够在最终回填、铺设和其他施工活动之前显示埋地线路的状况。 1.4 本规程适用于术语中定义的由热塑性塑料管、增强热固性树脂（RTRP）管和增强塑料砂浆（RPM）管制成的所有无压污水管 D883 , D1600 和 F412 . 1.5 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 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。 有关具体的预防说明，请参阅第节 5. . 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====== 4.1 这种低压空气测试方法通过测量压力下空气从下水道隔离段逸出的速率来检测损坏的管道或不当连接。 4.2 空气损失率表明是否存在损坏的管道或泄漏接头。本规程不旨在显示系统总漏水极限，也不得用作渗透或渗出工况下泄漏的定量测量。 注1: 本规程中规定的可接受空气损失的发现可以解释为安装验收测试，而不是渗透或渗出测试。 4.3 本规程保证了正确安装的污水管的初始条件和工艺质量。

1.1 This practice provides procedures for testing non-pressure plastic pipe sewer lines, using low-pressure air to prove the integrity of the installed material and the construction procedures. Two procedures are included to find the rate of air leakage—the constant-pressure method and the time-pressure drop method. 1.2 This practice is performed on lines after all connections and service laterals have been plugged and braced adequately to withstand the test pressure. The time between completion of the backfill operation and low-pressure air testing may be specified by the approving authority. 1.3 This practice is used as a preliminary test, which enables the installer to show the condition of a buried line prior to final backfill, paving, and other construction activities. 1.4 This practice is applicable to all non-pressure sewer lines made of thermoplastic pipe, reinforced thermosetting resin (RTRP) pipe, and reinforced plastic mortar (RPM) pipe, defined in Terminology D883 , D1600 , and F412 . 1.5 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. 1.6 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. For specific precautionary statements, see Section 5 . 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 ====== 4.1 This low-pressure air testing practice detects damaged piping or improper jointing by measuring the rate at which air under pressure escapes from an isolated section of sewer. 4.2 The rate of air loss indicates the presence or absence of damaged piping or leaking joints. This practice is not intended to show total system water leakage limits and shall not be used as a quantitative measure of leakage under service conditions for infiltration or exfiltration. Note 1: A finding of acceptable air loss specified in this practice can be interpreted as an installation acceptance test in lieu of infiltration or exfiltration testing. 4.3 This practice provides assurance of initial condition and quality of workmanship of properly-installed sewer pipe.