dlt 4的41-2004 火力发电厂高温高压蒸汽管道蠕变监督规程.pdf

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dlt 4的41-2004 火力发电厂高温高压蒸汽管道蠕变监督规程.pdf

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dlt 4的41-2004 火力发电厂高温高压蒸汽管道蠕变监督规程

ICS27.100 F23 备案号:13615-2004 OL 中华人民共和国电力行业标准 DL/T 441一 2004 代替DL441一 1991 火力发电厂高温高压蒸汽管道蠕变监督规程 Supervisioncodeforcreepstrainofsteampipe inhightemperatureandhighpressureinfossilfuelpowerplant 2004-03-09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/T441一 2004 目次前言 ···········································。·········································································……11 1 范围 ··················································································································…… 1 2 规范性引用文件 ···································································································…… 1 内 J 蠕变测量截面的设计、装设位置及保护 ···········································。·························…… 1 4 蠕变测量方法 ·。····································································································…… 1 ︸ f ︶蠕变测点和测量标记的装设 ··········。·········································································…… 2 ‘ U 蠕变测量和计算 ·····································································。·····························……3 月了蠕变监督的技术管理 ····························································································…·…6 附录A (资料性附录) 常用蒸汽管道钢材的线性膨胀系数 ············································…·… 7 DL/T441一 2004 PU 青本标准是根据原国家经济贸易委员会司 (局)《关于下达 2000年度电力行业标准制、修订计划项目的安排》电力 2【000170号文，对DL441-1991进行修订。高温蒸汽管道蠕变监督的目的是保证管道的安全运行。通过对管道定期、定型蠕变测量和数据分析，及时掌握高温蒸汽管道金属的蠕变规律，为正确分析和预测管道的剩余寿命提供可靠的技术依据。 DL441-1991自颁布实施至今已10年有余，在实施的过程中积累了丰富的经验，也提出