ML22286A243

Kairos Power, LLC - Preliminary Safety Analysis Report

ML22286A243
Person / Time
Site:	Hermes
Issue date:	10/13/2022
From:	Kairos Power
To:	Office of Nuclear Reactor Regulation
Shared Package
ML22286A240	List: ML22286A241 ML22286A242 ML22286A243
References
KP-NRC-2210-008
Download: ML22286A243 (1)

Text

Preliminary Safety Analysis Report Accident Analysis Table 13.11: Acceptance Criteria for Figures of Merit Figure of Merit Acceptance Criterion Applicable Events Peak TRISO temperaturetime Generally bounded by temperature Salt Spill, Reactivity time curves derived from the Insertion, Increase in Heat assumed MHA fuel temperature Removal, Loss of Forced time curve Circulation, PHSS break, Seismic TRISO failure probability Negligible TRISO fuel failure Salt Spill, Reactivity probability Insertion, Increase in Heat Removal, Loss of Forced Circulation, PHSS break Peak Flibecover gas interfacial Generally bounded by temperature Salt Spill, Reactivity temperature time curves derived from the Insertion, Increase in Heat assumed MHA Flibecover gas Removal, Loss of Forced interfacial temperaturetime curve Circulation, PHSS break Peak vessel and core barrel Bounded by both the maximum Salt Spill, Reactivity temperatures allowable temperature derived to Insertion, Increase in Heat limit excessive creep deformation Removal, Loss of Forced and damage accumulation and by Circulation, PHSS break 750°C (highest vessel temperature covered by qualification description in Section 4.3.3)

Minimum reactor vessel inner Above Flibe melting temperature Loss of Forced Circulation surface temperature (overcooling)

Airborne release fraction of Below airborne release fraction Salt Spill, Seismic spilled/splashed Flibe limit derived to bound total releases of the postulated event to less than the MHA Volatile product formation from Negligible amount of additional Salt Spill, PHSS break Flibeair reaction volatile products formed Volatile product formation Negligible amount of additional Salt Spill from Flibe chemical reaction with volatile products formed water, concrete, and/or construction materials (e.g.,

insulation, steel)

Mass loss of pebble carbon Mass loss does not extend into the Salt Spill, PHSS break matrix due to oxidation fueled zone Kairos Power Hermes Reactor 1321 Revision 1