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2017
Decay heat removal possibilities are one of the three fundamental issues for the safety of a nuclear reactor. The sodium-cooled fast reactors have some intrinsic advantages to ensure this function: high thermal inertia, good capabilities of natural convection with sodium, use of air as the cooling source thus minimizing the consequences of a loss of ...
Joël Guidez, Gérard Prêle
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Decay heat removal possibilities are one of the three fundamental issues for the safety of a nuclear reactor. The sodium-cooled fast reactors have some intrinsic advantages to ensure this function: high thermal inertia, good capabilities of natural convection with sodium, use of air as the cooling source thus minimizing the consequences of a loss of ...
Joël Guidez, Gérard Prêle
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Passive decay heat removal in advanced LWR concepts
Nuclear Engineering and Design, 1993Abstract This paper explores the possibilities of developing a passive LWR design concept which could ensure sufficient decay heat removal in the absence of emergency primary coolant supply without exceeding the safe temperature limit on cladding, and which could achieve large nominal operating power output in the range 600–1000 MWe.
Pavel Hejzlar +2 more
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Passive Decay Heat Removal in Liquid-Metal Cooled Reactors
Fusion Technology, 1986The use of liquid-metal, self-cooled blankets in fusion reactors could offer desirable thermal and mechanical characteristics. This study has considered the response of such blankets to a loss-of-flow accident (LOFA) where reactor afterheat is removed via natural convection alone.
Boro Malinovic, Mujid S. Kazimi
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Decay heat removal for LMFR under accidents
Izvestiâ Akademii nauk SSSR. ÈnergetikaNuclear reactors of “Proryv” project are positioned as the basis for large scale nuclear energetics with inherent safety, which in particular means “eliminating accident at NPP that require evacuation let alone resettlement of population”, which includes cases of multiple malfunctions.
V. I. Rachkov +2 more
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Decay heat removal options in nuclear rocket engines
29th Joint Propulsion Conference and Exhibit, 1993Nuclear rocket engines which are to be restarted require cooling of the reactor core after each run. Cooling will be required after each shutdown for times from half a day to five days depending on the length of the run. Calculation of the decay heat from fission products and transuranic elements are presented for each in a series of runs typical of a ...
LOREN FELTEN, CHARLTON DUNN
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Possible design of PBR for passive decay heat removal
Journal of Nuclear Science and Technology, 2015Conditions for design parameters of above-ground and underground, prismatic high-temperature gas-cooled reactor (HTGR)s for passive decay heat removal based on fundamental heat transfer mechanisms were obtained in the previous works. In the present study, analogous conditions were obtained for pebble bed reactors by performing the same procedure using ...
Odmaa Sambuu, Toru Obara
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Above-ground HTGR design for passive decay heat removal
Journal of Nuclear Science and Technology, 2014The design of a small high-temperature gas-cooled reactor (HTGR) for passive decay heat removal which could be located deeply underground was proposed previously. In the present work, analogue design analyses of passive decay heat removal for an above-ground long-life small prismatic HTGR was carried out to obtain the conditions for successful decay ...
Odmaa Sambuu, Toru Obara
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Numerical simulations of an innovative decay heat removal systems
The European Physical Journal Plus, 2020The general interest in innovative forms of nuclear energy from fission leads many industrial companies and research institutions to develop ambitious projects to design an innovative reactor fleet. Often such new designs are based on innovative reactor coolants and imply as a consequence a complete change of the technology know how.
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The Choose of Decay Heat Removal Systems of SFR
Volume 6A: Thermal-Hydraulics and Safety Analyses, 2018A sodium-cooled fast reactor is a significant candidate for future power reactor systems. Decay heat removal is an essential function of reactor safety systems The decay heat removal system should have the capacity to remove the decay heat with natural circulation in any accident.
Nina Yue +4 more
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RELAP5 assessment on CIRCE decay heat removal experiments
2014DHR experiments were carried out on the large scale LBE-cooled CIRCE facility at the ENEA/Brasimone center to verify the decay heat removal through heat exchangers immersed in the LBE pool under representative accidental conditions, and provide a valuable database for both CFD and system code assessment.
Di Piazza, I. +4 more
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