Kairos

Artist rendering Kairos reactor design with the following components: fueling chute, pebble flow, pebble bed core, pebble insertion channel, defueling chute, pebble extraction machine, cover gas space, pebble insertion, reactor coolant outlet, pebble extraction, reactor coolant inlet, decay heat removal system, reactivity control and shutdown elements, core coolant outlet flow, reactor vessel, downcomer, core barrel, graphite reflector, engineered and bypass flow, and core coolant inlet


Project Overview

The U.S. Nuclear Regulatory Commission (NRC) is currenlty engaged in pre-application activities with Kairos Power starting in November 2018.  Kairos Power is an Alameda, CA company designing a fluoride salt-cooled high temperature reactor (FHR) using Triso-coated particle fuel in a pebble bed configuration.

For more information, please see the Kairos pre-application documents (NRC Docket 99902069).

Pre-Application Activities

Product Type Reference  Status
Principal Design Criteria (PDC) for the Kairos Power Fluoride Salt-Cooled, High Temperature Reactor (KP-TR-003) Topical Report ML20167A174 Feedback Provided
ML20111A118
Regulatory Analysis for the Kairos Power Fluoride Salt-Cooled High Temperature Reactor (KP-TR-004) Topical Report ML19024A480 Cancelled
Reactor Coolant for the Kairos Power Fluoride Salt-Cooled High Temperature Reactor (KP-TR-005) Scaling Methodology for the Kairos Power Testing Program (KP-TR-006) Topical Report ML19079A325 Feedback Provided
ML20140A147
Scaling Methodology for the Kairos Power Testing Program (KP-TR-006) Topical Report ML19066A047
 
Feedback Provided
ML20141A222
KP-FHR Risk-Informed Performance-Based Licensing Basis Development (LMP) Methodology (KP-TR-009) Topical Report ML19217A420 Feedback Provided
ML20328A229
KP-FHR Fuel Performance Methodology (KP-TR-010) Topical Report ML20318A223 Under Review
Metallic Materials Qualification (KP-TR-013) Topical Report ML20182A800 Under Review
Kairos Quality Assurance Program (KP-TR-007) Topical Report ML20136A414 Under Review
Fuel Qualification Methodology (KP-TR-011) Topical Report ML20182A830 Under Review
KP-FHR Mechanistic Source Term Methodology (KP-TR-012) Topical Report ML20182A785 Under Review
Regulatory Analysis for the Kairos Power Fluoride Salt-Cooled High Temperature Reactor (KP-TR-004) Topical Report ML20328A233 Under Review

Page Last Reviewed/Updated Wednesday, June 16, 2021