Cause Analysis and Solution of Boron Concentration Reduction in Three Generation Nuclear Power Passive Core Makeup Tank (CMT)

Abstract

During the normal operation of the third-generation nuclear power plant, according to the requirements of the technical specification (TS), the CMT should be sampled every seven days, which should be controlled between 3400ppm and 4500ppm. However, due to various reasons, the boron concentration of CMT will drop abnormally. In order to meet the requirements of the technical specification, it is necessary to supplement boron to CMT frequently, which will cause a series of serious problems. Therefore, it is necessary and urgent to solve the problem of abnormal reduction of boron concentration in CMT.

Keywords

• core make-up water tank
• boron concentration
• drop
• solution