DLT440-2004在役电站锅炉汽包的检验及评定规程.pdf

《DLT440-2004在役电站锅炉汽包的检验及评定规程.pdf》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。

1、ICS27.100F23备案号:13614一2004EIL中华人民共和国电力行业标准DL/T440一2004代替DL440一1991在役电站锅炉汽包的检验及评定规程Thecodeofinspectionandevaluationforexistingboilerdruminfossil-fuelpowerplants2004-03-09发布2004-06-01实施中华人民共和国国家发展和改革委员会发布DL/T440一2004目次前言·······························”···········

2、·······“····························································⋯⋯n1范围········“······································”··················”··”·······“····························⋯⋯12规范性引用文件·························································“·“··········

3、············“··········⋯⋯13总则································································································”·············”·⋯⋯14检验人员及评定单位·····························································································⋯⋯15汽包检验······

4、······································································································⋯⋯16强度校核与缺陷评定····················································································”·”····⋯⋯47低周疲劳寿命估算···········································

5、·····················································⋯⋯58缺陷处理措施·······································”·····························································⋯⋯5DL/T440一2004月U青为了加强火力发电厂在役锅炉汽包的安全监督，保证安全运行，延长使用寿命，保障人身安全，根据原国家经贸委电力司《关于确认1998年度电力行业标准制、修订计划项目的

6、通知》(电力〔1999]40号)，对DL440-1991《在役电站锅炉汽包的检验、评定及处理规程》进行了修订。本标准与DL44(卜.1991相比有以下一些主要变化:—标准名称改为《在役电站锅炉汽包的检验及评定规程》:—对在役汽包状态检验的项目、周期、检验内容及质量标准做了增补，以利于操作执行，进一步提高检验质量;一一增加了汽包“检验记录”条款;—对汽包强度校核和缺陷评定的条件、采用的标准以及评定报告的内容等项要求做了适当的补充;—对汽包需要焊接修复的条件及采用的标准做了明确的规定;—取消了原标准中有关汽包修复的章节，

7、汽包的修复按DL/T734《火力发电厂锅炉汽包焊接修复技术导则》执行:本标准实施后代替DL440-19910本标准由中国电力企业联合会提出。本标准由电力行业电站金属材料标准化技术委员会归口并负责解释。本标准主要起草单位:国电热工研究院、兰州西固热电有限责任公司。本标准主要起草人:李益民、杨百勋、王金瑞、蔡连元。DL/T440一2004在役电站锅炉汽包的检验及评定规程1范围本标准规定了火力发电厂在役锅炉汽包的检验、安全性评定及缺陷修复处理等基本要求。本标准适用于额定蒸汽压力不小于3.8MPa(表压)的火力发电用在役锅炉

8、汽包。外置式汽水分离器和额定蒸汽压力小于3.8MPa(表压)的在役锅炉汽包可参照执行。2规范性引用文件下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有的修改单(不包括勘误的内容)或修订版均不适用于本标准，然而，鼓励根据本标准达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用