Cause analysis and treatment of 1000MW ultra supercritical boiler water wall leakage

Abstract

Abstract:

Abstract:From the structure,design,piping,performance,operation and other aspects,this paper analyzed a power plant’s boiler front wall water wall leakage accident.And indicated that the main causes of this accident are water wall abnormal expansion,improper welding process,water wall over pressure due to structure design and thermal stress while operation.This paper also included treatment measures.

Key words: Keywords:ultra supercritical boiler, front wall water wall, expansion, thermal stress

DONG Hongnian. Cause analysis and treatment of 1000MW ultra supercritical boiler water wall leakage[J]. Huadian Technology, 2016, 38(2): 48-52.

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Cause analysis and treatment of 1000MW ultra supercritical boiler water wall leakage

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