1.1本规程涵盖了使用横向封隔器方法，使用适当的化学灌浆测试和密封下水道横向连接和主线下水道的横向管线的程序。化学灌浆用于阻止结构良好的重力流下水道系统中地下水的渗透和污水的渗出。 1.2本规程适用于直径为6至24英寸的主线下水道。4、5或6英寸。直径支管。具有横向连接和管线的大直径管道可以使用特殊封隔器或人工进入方法进行灌浆。主线和横向管道的结构必须足以形成有效的密封。 1. 3工人安全培训应包括审查污水、密闭空间、泵送设备和相关设备的生物危害和气体。化学灌浆制造商或供应商（或两者）应提供额外的安全考虑，包括正确处理、混合和运输化学灌浆。其安全操作规程和程序应详细描述各种灌浆作业的适当个人防护设备（PPE）。涵盖的操作应包括正确储存、运输、混合和处置化学灌浆、添加剂及其相关容器。 1.4以英寸表示的数值- 磅单位应视为标准单位。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。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 检查、测试和维修卫生下水道的横向连接是维护和优化系统性能所必需的常规做法。 重要的是确定使用最新化合物和技术的方法，以确保减少渗透和渗出。重要的是尽量减少对交通的干扰，并减少对市政和私人业主的环境影响。 本规程作为一种检查、测试和密封下水道横向连接和主线下水道的预定部分的方法，使用横向封隔器方法选择了适当的化学灌浆。电视（或光学）检查和下水道横向连接测试用于评估状况并记录任何维修。 当发现主线和横向连接具有纵向裂纹管道、结构不健全管道或扁平或不圆管道时，不应使用这种做法。

1.1 This practice covers the procedures for testing and sealing sewer lateral connections and lateral lines from the mainline sewer with appropriate chemical grouts using the lateral packer method. Chemical grouting is used to stop infiltration of ground water and exfiltration of sewage in gravity flow sewer systems that are structurally sound. 1.2 This practice applies to mainline sewer diameters of 6 to 24 in. with 4, 5, or 6 in. diameter laterals. Larger diameter pipes with lateral connections and lines can be grouted with special packers or man-entry methods. The mainline and lateral pipes must be structurally adequate to create an effective seal. 1.3 Worker safety training should include reviewing the biohazards and gases from sewage, confined spaces, pumping equipment, and related apparatus. Additional safety considerations including proper handling, mixing, and transporting of chemical grouts should be provided by the chemical grout manufacturer or supplier, or both. Their safe operating practices and procedures should describe in detail appropriate personal protective equipment (PPE) for the various grouting operations. Operations covered should include the proper storage, transportation, mixing, and disposal of chemical grouts, additives, and their associated containers. 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 and health practices and to determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== The inspection, testing, and repair of lateral connections for sanitary sewers are regular practice necessary for the maintenance and optimal performance of the system. It is important to identify methods that use the most current compounds and technology to ensure the reduction of infiltration and exfiltration. It is important to minimize disruption to traffic and lessen the environmental impacts for both the municipal and private owners. This practice serves as a means to inspect, test, and seal sewer lateral connections and a predetermined portion of the lateral lines from the mainline sewer, having selected the appropriate chemical grouts using the lateral packer method. Television (or optical) inspection and sewer lateral connection testing are used to assess the condition and document any repairs. This practice should not be used where mainline and lateral connections are found with longitudinally cracked pipe, structurally unsound pipe, or flattened or out of round pipe.