ISO/TR 4340:2022 水侵蚀性评价和衬砌优化选择

标准编号：ISO/TR 4340:2022

中文名称：水侵蚀性评价和衬砌优化选择

英文名称：Water aggressiveness evaluation and optimized lining choice

发布日期：2022-06

标准范围

本文件详细介绍了侵蚀性因素、原水或球墨铸铁管系统进水的评估指标以及适用于供水干管和配电系统中使用的球墨铸铁管、配件和附件的相关衬里信息。本文件旨在作为一种工具，用于评估某些水的性质及其对ISO 2531、ISO 16631中规定的水管和配水系统中使用的球墨铸铁管、配件和附件的内部衬里的影响，并可用于确定最合适的保护措施，以确保管道的长期耐久性。不可能总是通过有限的测试和评估来确定某些水的侵蚀性参数。因此，可参考评估水的历史信息和当地水厂的经验。在确定某些管道的内衬材料之前，可以进行水的侵蚀性评估，评估和相关测试可以由合格的实验室和工程师进行。据信，导致管道内高水平结垢的水具有侵蚀性。排水和废水不在本文件范围内，管道供应商可建议对排水和废水进行内部保护。

This document provides details about the aggressiveness factors, evaluation indicators of raw water, or inlet water of ductile iron pipe system and relevant lining information applicable to ductile iron pipes, fittings and accessories used in water mains and distribution system.This document is intended to serve as a tool for estimating the properties of certain water and their effect on internal linings of ductile iron pipes, fittings and accessories used in water mains and distribution system which are specified in ISO 2531, ISO 16631 and can be used to decide the most appropriate protective measures to ensure long term durability of pipeline.It is not always possible to definitively determine the aggressive parameters of certain water, and fully considered by limited test and evaluation. Therefore, the history information of the evaluated water, experiences of local water works can be taken for reference.The aggressiveness evaluation of water can be carried out before determining the internal lining materials of certain pipeline, and the evaluation and relevant tests can be done by qualified laboratories and engineers.Water that leads to high-level scaling in the pipeline is believed aggressive.Drainage and waste water are not in the scope of this document, the internal protection of drainage and waste water can be recommended by pipe suppliers.

标准预览图