Pre-Conceptual Design of a Fluoride-Salt-Cooled Small Modular Advanced High Temperature Reactor (SmAHTR)

Greene, Sherrell R¹  Gehin, Jess C¹  Holcomb, David Eugene¹  Carbajo, Juan J¹  Ilas, Dan¹  Cisneros, Anselmo T¹  Varma, Venugopal Koikal¹  Corwin, William R¹  Wilson, Dane F¹  Yoder Jr, Graydon L¹ 

[1]ORNL

关键词: small modular fluoride salt high temperature reactor SmAHTR AHTR;   

DOI  :  10.2172/1008830
RP-ID  :  ORNL/TM-2010/199
PID  :  OSTI ID: 1008830

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来源: SciTech Connect

【 摘 要 】

This document presents the results of a study conducted at Oak Ridge National Laboratory during 2010 to explore the feasibility of small modular fluoride salt-cooled high temperature reactors (FHRs). A preliminary reactor system concept, SmATHR (for Small modular Advanced High Temperature Reactor) is described, along with an integrated high-temperature thermal energy storage or salt vault system. The SmAHTR is a 125 MWt, integral primary, liquid salt cooled, coated particle-graphite fueled, low-pressure system operating at 700 C. The system employs passive decay heat removal and two-out-of-three , 50% capacity, subsystem redundancy for critical functions. The reactor vessel is sufficiently small to be transportable on standard commercial tractor-trailer transport vehicles. Initial transient analyses indicated the transition from normal reactor operations to passive decay heat removal is accomplished in a manner that preserves robust safety margins at all times during the transient. Numerous trade studies and trade-space considerations are discussed, along with the resultant initial system concept. The current concept is not optimized. Work remains to more completely define the overall system with particular emphasis on refining the final fuel/core configuration, salt vault configuration, and integrated system dynamics and safety behavior.