ISO 21225-1:2018由国际标准化组织 IX-ISO 发布于 2018-03-28。
ISO 21225-1:2018在国际标准分类中归属于: 23.040.45 塑料配件。
ISO 21225-1:2018 用于地下管网非开挖替代的塑料管道系统第1部分:通过管道爆破和管道抽取在线更换的最新版本是哪一版?
最新版本是 ISO 21225-1:2018 。
* 在 ISO 21225-1:2018 发布之后有更新,请注意新发布标准的变化。
This document specifies requirements and test methods for pipes and fittings which are part of plastics piping systems for the trenchless replacement of underground non-pressure and pressure drainage and sewerage networks and underground water and gas supply networks, by means of pipe bursting and pipe extraction. It is applicable to polyethylene (PE) pipes and fittings, as manufactured, as well as to the installed replacement system. This document is intended to be used in conjunction with standards applicable for the construction of PE pipeline systems where available. Regarding manufactured pipes it is applicable to three different PE pipe types: — PE solid wall single layered pipes (nominal outside diameter, dn), including any identification stripes; — PE pipes with co-extruded layers on either or both the outside and inside of the pipe (total outside diameter, dn), as specified in Annex A, where all layers have the same MRS rating; — PE pipes (outside diameter, dn) having a peelable, contiguous, thermoplastics additional layer on the outside of the pipe (“coated pipe”), see Annex A. In addition it is applicable to: — jointing of pipe lengths by means of butt fusion joint; — jointing of pipe lengths by means of electrofusion joint; — fabricated and injection-moulded fittings made of PE. Pipes made from other plastics, e.g. glass reinforced plastics (GRP), are outside the scope of this document.
第九条 燃气经营者在对燃气用户进行安全检查时,发现有下列情形之一,不按规定采取书面告知用户整改等措施的,判定为重大隐患: (一)燃气相对密度大于等于0.75的燃气管道、调压装置和燃具等设置在地下室、半地下室、地下箱体及其他密闭地下空间内; (二)燃气引入管、立管、水平干管设置在卫生间内; (三)燃气管道及附件、燃具设置在卧室、旅馆建筑客房等人员居住和休息的房间内; (四)使用国家明令淘汰的燃气燃烧器具...
在重要设施外侧三米范围内,从事爆破、打桩、顶进、实施深度大于管顶高程的开挖施工和井点法降低地下水位的施工等活动的,建设单位制定的设施保护方案应当经专家论证通过后,报市或者区水务部门备案。 ...
记者查阅相关规定发现,为保证城镇供水的卫生安全,《城镇给水排水技术规范》和《城市供水条例》均强调输水管网 “严禁穿越毒物污染区”,要避开毒物污染区。其中,《城镇给水排水技术规范》规定,供水管网严禁与非生活饮用水管道连通,严禁擅自与自建供水设施连接,严禁穿过毒物污染区。 ...
针对这种情况,近期,天通非开挖开展了非开挖管道修复技术项目试点工程。进行地下管线铺设,更换和修复的一项施工方法。 与传统的开挖方法相比,非开挖施工技术在维修管道位于地下较深位置,地表有障碍物,地面物修复困难等环境下更具优势。个试点项目位于周口市青云社区,对胜云路天亮浜桥南侧一段60米长的过路管进行修复工作。该段供水管道处于交通要道。...
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号