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Paper The following article is Open access

Cause Analysis of Pressure Plate Breakage of Valve Limit Switch in Turbine Bypass System of Nuclear Power Plant

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Published under licence by IOP Publishing Ltd
, , Citation Nan Li et al 2017 IOP Conf. Ser.: Mater. Sci. Eng. 220 012025 DOI 10.1088/1757-899X/220/1/012025

1757-899X/220/1/012025

Abstract

The limit switch plates of nuclear power plant unit 1 in the turbine bypass system valve are finding multiple fractures. On the basis of metallographic analysis and vibration analysis, the stress state of the pressure plate is simulated and calculated. The results show that there are some creases in the original plate of the limit switch and the installation error of the pressure plate is the main reason for the break.

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10.1088/1757-899X/220/1/012025