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首页> 外文期刊>Reliability Engineering & System Safety >Residual lifetime assessment of cold-reheater pipe in coal-fired power plant through accelerated degradation test
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Residual lifetime assessment of cold-reheater pipe in coal-fired power plant through accelerated degradation test

机译：通过加速降解试验的燃煤电厂冷再暖管剩余寿命评价

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摘要

Non-destructive testing (NDT) is the process of evaluating and inspecting materials without damage. The purpose of present study is to evaluate the residual lifetime of materials by proposing a new concept of nondestructive testing. The residual lifetime of service-exposed 1.25Cr-0.5Mo (P11) steel cold-reheater pipes in a coal-fired power plant, which were used for approximately 23 years at 310 degrees C, was investigated with accelerated degradation tests of a fresh P11 steel. The hardness and the microstructure of the P11 steel aged at 550 degrees C for 1000 h were similar to those of the service-exposed cold-reheater pipe. The creep-rupture tests of the steel aged at 550 degrees C for 1000 h were performed under various temperature and stress conditions together with the fresh steel. The creep-rupture properties analyzed using a Larson Miller parameter (LMP) approach suggested that the residual lifetime of the service-exposed pipes is approximately 53% at the current conditions. The proposed methodology is expected to serve as a useful tool to check the timing of materials replacement and to maintain safety in a coal-fired power plant.
机译：非破坏性测试（NDT）是评估和检查没有损坏的材料的过程。本研究的目的是通过提出新的无损检测概念来评估材料的残留寿命。在燃煤发电厂中，在310℃下使用大约23年的燃煤发电厂中的剩余寿命。钢。在550℃下为1000小时的P11钢的硬度和微观结构与现出的冷热再热饮料管相似。在各种温度和胁迫条件下，在各种温度和压力条件下进行550℃下钢的蠕变断裂试验与新鲜钢。使用Larson Miller参数（LMP）方法分析的蠕变破裂性能表明，在当前条件下，服务暴露管的残留寿命约为53％。预计提出的方法是用作检查材料更换时间的有用工具，并在燃煤发电厂中保持安全性。

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  • 来源
    《Reliability Engineering & System Safety》 |2019年第8期|330-335|共6页
  • 作者

    Kim Myung-Yeon; Chu Dong-Ju; Lee Young-Kook; Shim Jae-Hyeok; Jung Woo-Sang;

  • 作者单位

    Korea Inst Sci & Technol Ctr Energy Mat Res Seoul 02792 South Korea|Yonsei Univ Dept Mat Sci & Engn Seoul 03722 South Korea;

    Korea Inst Sci & Technol Ctr Energy Mat Res Seoul 02792 South Korea|Korea Univ Dept Mat Sci & Engn Seoul 02841 South Korea;

    Yonsei Univ Dept Mat Sci & Engn Seoul 03722 South Korea;

    Korea Inst Sci & Technol Ctr Energy Mat Res Seoul 02792 South Korea;

    Korea Inst Sci & Technol Ctr Energy Mat Res Seoul 02792 South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    1.25Cr-0.5Mo steel; Cold-reheater pipe; Creep; LMP; Residual lifetime;

    机译：1.25Cr-0.5mo钢;冷再热饮料;蠕变;LMP;剩余寿命;

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