1.1 本规程描述了使用喷涂聚合物涂层修复饮用水管道的程序，该涂层适用于使用已根据NSF/ANSI 61认证的树脂材料建造的铁、钢或石棉水泥管道，用于饮用水管的现场衬砌。 1.2 本规程适用于由直径为4英寸（10厘米）至36英寸（90厘米）的金属或非金属管道构成的饮用水管道。对于应用于其他非金属表面的聚合物衬里以及这些直径限制之外的应用衬里，应向产品制造商寻求专家建议。 1.3 本规程适用于需要AWWA I级（非结构）衬里至III级（半结构）衬里的现场管道- 结构）衬里（见AWWA M28）。 1.4 本规程不涉及衬砌系统设计。内衬系统设计方面的帮助可从内衬系统制造商和操作员处获得，他们在聚合物内衬设计方面受过专业培训和经验丰富。 1.5 单位- 以英寸-磅单位表示的值应视为标准值。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准值。 1.6 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 本规程适用于水务公司或其他业主、承包商、指定人员、监管机构、检查机构或其他参与饮用水管道修复并希望指定或允许使用喷涂聚合物衬里的用户。

1.1 This practice describes the procedures for the rehabilitation of potable water pipes using spray-applied polymeric coatings for pipelines constructed of iron, steel, or asbestos cement using resin materials that have been certified in accordance with NSF/ANSI 61 for the in-situ lining of potable water mains. 1.2 This practice applies to potable water pipelines constructed of metallic or non-metallic piping in the diameter ranges of 4 in. (10 cm) to 36 in. (90 cm). Specialist advice should be sought from the product manufacturer for polymeric linings applied to other nonmetallic surfaces and for applied linings outside of these diametric limitations. 1.3 This practice applies to in-situ pipes requiring AWWA Class I (nonstructural) linings through Class III (semi-structural) linings (see AWWA M28). 1.4 This practice does not address lining system design. Assistance with lining system design is available from lining system manufacturers and operators who have been professionally trained and experienced in polymeric liner design. 1.5 Units— 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. 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 practice is for use by water utilities or other owners, contractors, specifiers, regulatory agencies, inspection organizations or other users who are involved in the rehabilitation of potable water pipelines and wish to specify or permit the use of spray-applied polymeric liners.