Analysis and Countermeasures for Thinning of Small Pipe in Secondary Loop of Nuclear Power Plant
An actual nuclear power plant encountered often leakage of secondary loop small pipelines in conventional island which needed treatment by pressure plugging and brought hidden dangers to safety and stable operation.This paper re-ports the aforementioned problem and the effort made to cope with it,including examination seeking the root cause of sec-ondary loop small pipe leakage through chemical composition analysis,microscopic observation,hardness measurement,and crystal phase analysis for the demolished pipe elbow of LCS,LBQ and LBA systems (replaced during overhaul),and the formulation and execution of recommended countermeasures.
metal supervisionsmall pipewall thickness reduction
万方数据
维普
