The Reliability Of Steam-Operated Emergency Feed Pumps

Abstract

An original method of calculation and experimental qualification of quality and reliability an emergency feed pump with a steam drive from a steam generator is proposed to improve the efficiency of accident management with complete loss of long-term power supply at nuclear power plants. The use of an emergency feed pump with a steam drive from a steam generator is an alternative approach to passive heat removal systems through a steam generator, which, due to design and technical limitations, cannot ensure sufficient performance of safety functions to remove residual heat generation from a reactor and maintain the required level in steam generators in case of accidents with complete loss of long-term power supply. On the basis of the obtained qualification results, the technical requirements for an alternative feed pump with a steam drive were determined to compensate for ensuring the safety functions in case of failure of the design emergency feed pumps.