To avoid the failures of dissimilar steel welds at the high-pressure main steam flowmeters,an event of steam leakage at the high-pressure main steam flowmeters occurred in a power plant is investigated and detected,and an in-depth analysis on the cracking causes of dissimilar welds proposes a solution to efectively solve the hidden dangers of such weld failures of dissimilar steel flowmeters and improve the safety and reliability of the units.
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