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1. WO2021061930 - COOLANT CLEANUP AND HEAT-SINKING SYSTEMS AND METHODS OF OPERATING THE SAME

Publication Number WO/2021/061930
Publication Date 01.04.2021
International Application No. PCT/US2020/052414
International Filing Date 24.09.2020
IPC
G21C 15/18 2006.01
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
CNUCLEAR REACTORS
15Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
18Emergency cooling arrangements; Removing shut-down heat
G21C 15/02 2006.01
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
CNUCLEAR REACTORS
15Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
02Arrangement or disposition of passages in which heat is transferred to the coolant, e.g. for coolant circulation through the supports of the fuel elements
CPC
F22B 35/004
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
35Control systems for steam boilers
004Control systems for steam generators of nuclear power plants
G21C 15/243
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
CNUCLEAR REACTORS
15Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
24Promoting flow of the coolant
243for liquids
G21C 19/307
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
CNUCLEAR REACTORS
19Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
28Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core
30with continuous purification of circulating fluent material, e.g. by extraction of fission products ; deterioration or corrosion products, impurities, e.g. by cold traps
307specially adapted for liquids
G21D 1/006
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
DNUCLEAR POWER PLANT
1Details of nuclear power plant
006primary side of steam generators
Applicants
  • GE-HITACHI NUCLEAR ENERGY AMERICAS LLC [US]/[US]
Inventors
  • BASS, Derek
  • DAHLGREN, Christer
Priority Data
16/582,63825.09.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COOLANT CLEANUP AND HEAT-SINKING SYSTEMS AND METHODS OF OPERATING THE SAME
(FR) SYSTÈMES DE PURIFICATION DE LIQUIDE DE REFROIDISSEMENT ET DE DISSIPATION DE CHALEUR, ET LEURS PROCÉDÉS DE FONCTIONNEMENT
Abstract
(EN)
Combined cleanup and heat sink systems work with nuclear reactor coolant loops. Combined systems may join hotter and colder sections of the coolant loops in parallel with any steam generator or other extractor and provide optional heat removal between the same. Combined systems also remove impurities or debris from a fluid coolant without significant heat loss from the coolant. A cooler in the combined system may increase in capacity or be augmented in number to move between purifying cooling and major heat removal from the coolant, potentially as an emergency cooler. The cooler may be joined to the hotter and colder sections through valved flow paths depending on desired functionality. Sections of the coolant loops may be fully above the cooler, which may be above the reactor, to drive flow by gravity and enhance isolation of sections of the coolant loop.
(FR)
Des systèmes combinés de purification et de dissipation de chaleur fonctionnent avec des boucles de liquide de refroidissement de réacteur nucléaire. Des systèmes combinés peuvent réunir des sections plus chaudes et plus froides des boucles de liquide de refroidissement en parallèle avec n'importe quel générateur de vapeur ou autre extracteur et fournir une élimination de chaleur facultative entre ceux-ci. Des systèmes combinés éliminent également des impuretés ou des débris d'un liquide de refroidissement sans perte de chaleur significative du liquide de refroidissement. Un refroidisseur dans le système combiné peut augmenter en capacité ou être augmenté en nombre pour alterner entre un refroidissement de purification et une élimination de chaleur majeure du liquide de refroidissement, potentiellement en tant que système de refroidissement d'urgence. Le système de refroidissement peut être relié aux sections plus chaudes et plus froides par l'intermédiaire de chemins d'écoulement à valve en fonction de la fonctionnalité souhaitée. Des sections des boucles de refroidissement peuvent être situées entièrement au-dessus du système de refroidissement, qui peut être au-dessus du réacteur, pour entraîner l'écoulement par gravité et améliorer l'isolation de sections de la boucle de liquide de refroidissement.
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