1.1 本规程适用于下水道的操作和维护，随后按照规程安装光缆 F2303页 . 1.2 本规程适用于重力流雨水管、卫生下水道和组合下水道。 1.3 本规程不适用于强制干管、虹吸管或其他加压下水道。 1.4 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。 1.5 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 本文件旨在概述需要光缆所有者和污水管道运营商共同讨论和协商的运维问题。目的是制定足够的书面程序和实践，使光纤系统作为下水道内的二次使用共存。如果下水道主要用于输送流量，则光缆所有者有责任适应下水道运维实践，并制定不会对下水道主要功能产生重大影响的光纤系统运维程序。 5.2 由于整合下水道和光纤系统的做法是一项新兴活动，因此该做法将有助于为其快速安全部署制定指导方针，确保安装的设施长期按预期运行- 期限基础。

1.1 This practice applies to the operation and maintenance of sewers with a subsequent installation of optical fiber cable in accordance with Practice F2303 . 1.2 This practice applies to gravity flow storm sewers, sanitary sewers, and combined sewers. 1.3 This practice does not apply to force mains, siphons, or other pressurized sewers. 1.4 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. 1.5 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 intended to outline O&M issues that require discussion and mutual agreement by both the optical fiber cable owner and sewer pipeline operator. The purpose is developing sufficient written procedures and practices to allow optical fiber systems to coexist as a secondary use within a sewer. To the extent that sewers are primarily for conveying flow, it is the responsibility of the optical fiber cable owner to accommodate sewer O&M practices and develop optical fiber system O&M procedures that will not material impact the sewer’s primary function. 5.2 Since the practice of integrating sewers and optical fiber systems is an emerging activity, this practice will help establish guidelines for its rapid and safe deployment, ensuring that the installed facilities are operable as intended on a long-term basis.