Publications

Sodium pump performance in the NASCORD database

Jankovsky, Zachary; Stuart, Zach; Denman, Matthew R.

Sodium-cooled Fast Reactors (SFRs) have an extended operational history that can be leveraged to accelerate the licensing process for modern designs. Sandia National Laboratories has recently reconstituted the United States SFR data from the Centralized Reliability Data Organization (CREDO) into a new modern database called the Sodium System Component Reliability Database (NaSCoRD). NaSCoRD contains a record of 117 pumps, 60 with a sodium working fluid, that have operated in EBR-II, FFTF, and test loops including those operated by both Westinghouse and the Energy Technology Engineering Center. This paper will present sodium pump failure probabilities for various conditions allowable from the U.S. facility CREDO data that has been recovered under NaSCoRD. The current sodium pump reliability estimates will be presented in comparison to estimates provided in historical studies. The impacts of the suggested corrections from an EG&G Idaho report and various prior distributions on these reliability estimates will also be presented.