The threshold judgment method based on physical parameters for instrument and control system is an important function of IC in nuclear power plant,but some deficiencies,e. g.,single and fixed threshold judgment,and lack of correlation with time and working conditions. The existing method is improved and optimized,through analyzing and researching,the improving strategies are proposed,i. e.,under the premise of safety,comparing a variety of data processing algorithms,threshold multi-level floating,and associating with specific working conditions. The improvement helps to upgrade the fault toler...
