ICS 27.100 F20 备案号： 56210-XXXX 中华人民共和国电力行业标准 DL/T 438—202X 代替DL/T 438 －2016 202X-XX-XX发布 火力发电厂金属技术监督规程 （报批稿） Technical supervision codes for metal in fossil - fuel power plant 202X-XX-XX实施 国家能源局 发 布 DL/T 438 —202X 目 次 前 言................................ ................................ ................................ ................................ ................................ .......... III 1 范围 ................................ ................................ ................................ ................................ ................................ ........... 1 2 规范性引用文件 ................................ ................................ ................................ ................................ ....................... 1 3 术语和定义 ................................ ................................ ................................ ................................ .............................. 4 4 总则 ................................ ................................ ................................ ................................ ................................ ........... 5 5 金属材料的监督 ................................ ................................ ................................ ................................ ....................... 5 6 焊接质量的监督 ................................ ................................ ................................ ................................ ...................... 7 7 主蒸汽管道、再热蒸汽管道和导汽管的金属监 督 ................................ ................................ ............................... 7 8 高温集箱和连接管的金属监督 ................................ ................................ ................................ ............................. 15 9 受热面管的金属监督 ................................ ................................ ................................ ................................ ............. 18 10 锅筒和汽水分离器的金属监督 ................................ ................................ ................................ ........................... 21 11 给水管道和低温集箱的金属监督 ................................ ................................ ................................ ....................... 23 12 汽轮机部件的金 属监督 ................................ ................................ ................................ ................................ ....... 24 13 发电机部件的金属监督 ................................ ................................ ................................ ................................ ....... 26 14 紧固件的金属监督 ................................ ................................ ................................ ................................ ............... 27 15 大型铸件的金属监督 ................................ ................................ ................................ ................................ ........... 28 16 锅炉本体主要承重钢结构的金属监督 ................................ ................................ ................................ ............... 29 17 支吊架的金属监督 ................................ ................................ ................................ ................................ ............... 29 18 深度调峰机组的金属监督 ................................ ................................ ................................ ................................ ... 30 19 延寿机组的金属监督 ................................ ................................ ................................ ................................ ........... 30 20 金属技术监督管理 ................................ ................................ ................................ ................................ ............... 30 附 录 A （规范性） 金属技术监督专责（或兼职）工程师职责 ................................ ................................ ....... 33 附 录 B （规范性） 电站常用金属材料硬度值 ................................ ................................ ................................ .. 34 附 录 C （规范性） 低合金耐热钢蠕变损伤评级 ................................ .....