供应气体燃料的塑料管道系统 带熔接和机械连接的未塑化聚酰胺（PA-U）管道系统 第 6 部分：设计、操作和安装实施规范

[中文适用范围]： 本文件规定了用于建筑物外部埋地管道系统的未增塑聚酰胺 (PA-U) 管道和配件的实践规范，用于在 –20 °C 至 +40 °C 的温度范围内输送气体燃料（如 ISO 16486-1 中所定义，例如甲烷、液化石油气、人造气和氢气）。本文件还给出了适当的与温度相关的要求。实践规范涵盖其组件准备用于熔接或机械连接的主管线和服务管线，并给出了 PA-U 管道和配件的设计、储存、处理、运输、铺设条件和熔接质量控制以及后续接头测试、回填、管道系统测试和调试的说明。注：有关修复的主要信息可在 ISO 11295 分类、ISO 11299-1 和更详细的国家标准或实践规范中找到。本文件旨在与与上述基本原则相关的国家标准或实践规范结合使用。本文件涵盖的连接方法包括： — 对接熔接（见附件 A）； — 电熔连接（见附件 B）和 — 机械连接（见附件 C）。如果发生地面移动或震动（例如地震等），则可能需要按照当局提供的指南实施本文件中提到的预防措施（例如 EN 1998-4[17]、EN 12007-1:2012、附件 A[18] 等）。工人的健康和安全问题不在本文件的讨论范围内 [外文原描述]： This document specifies a code of practice dealing with unplasticized polyamide (PA-U) pipes and fittings for buried pipeline systems outside buildings and designed to transport gaseous fuels (as defined in ISO 16486-1, e.g. methane, LPG, manufactured gas and hydrogen) within the temperature range –20 °C to +40 °C. This document also gives appropriate temperature-related requirements. The code of practice covers mains and service lines whose components are prepared for fusion or mechanical jointing and gives instructions for the design, storage, handling, transportation, laying conditions and fusion quality control of PA-U pipes and fittings as well as subsequent joint testing, backfilling, pipe system testing and commissioning. NOTE Principal information for rehabilitation can be found in ISO 11295 for classification, ISO 11299-1 and ISO 11299-2 for renovation, and ISO 21225-1 and ISO 21225-2 for trenchless replacement. More detailed national standards or codes of practice can exist. This document is intended to be applied in association with such national standards or codes of practice related to the above-mentioned basic principles. The jointing methods covered by this document are: — butt fusion jointing (see Annex A); — electrofusion jointing (see Annex B) and — mechanical jointing (see Annex C). In the case of ground movement or shaking (e.g. earthquakes, etc.) precautions mentioned in this document can need to be implemented following guidelines provided by authorities (e.g. EN 1998-4, EN 12007-1:2012, Annex A etc.). Workers' health and safety issues are outside the scope of this document