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Title: Passive cooling to cold shutdown

Abstract

A cooling system for a reactor module includes a reactor pressure vessel that houses primary coolant and a steam generator that lowers a temperature of the reactor pressure vessel by transferring heat from the primary coolant to a secondary coolant. The steam generator releases at least a portion of the secondary coolant as steam. Additionally, the cooling system includes a containment vessel that at least partially surrounds the reactor vessel in a containment region. The containment region is dry during normal operation of the reactor module. A controller introduces a source of water into the containment region in response to a non-emergency shut down of the reactor module. The source of water is located external to the containment vessel, and the water is introduced into the containment region after the steam generator has initially lowered the temperature of the reactor pressure vessel in response to releasing the steam.

Inventors:
; ;
Issue Date:
Research Org.:
NuScale Power, LLC, Corvallis, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1568610
Patent Number(s):
10354762
Application Number:
14/923,277
Assignee:
NuScale Power, LLC (Corvallis, OR)
Patent Classifications (CPCs):
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
NE0000633
Resource Type:
Patent
Resource Relation:
Patent File Date: 10/26/2015
Country of Publication:
United States
Language:
English

Citation Formats

Keller, Michael, Snuggerud, Ross, and Liszkai, Tamas. Passive cooling to cold shutdown. United States: N. p., 2019. Web.
Keller, Michael, Snuggerud, Ross, & Liszkai, Tamas. Passive cooling to cold shutdown. United States.
Keller, Michael, Snuggerud, Ross, and Liszkai, Tamas. Tue . "Passive cooling to cold shutdown". United States. https://www.osti.gov/servlets/purl/1568610.
@article{osti_1568610,
title = {Passive cooling to cold shutdown},
author = {Keller, Michael and Snuggerud, Ross and Liszkai, Tamas},
abstractNote = {A cooling system for a reactor module includes a reactor pressure vessel that houses primary coolant and a steam generator that lowers a temperature of the reactor pressure vessel by transferring heat from the primary coolant to a secondary coolant. The steam generator releases at least a portion of the secondary coolant as steam. Additionally, the cooling system includes a containment vessel that at least partially surrounds the reactor vessel in a containment region. The containment region is dry during normal operation of the reactor module. A controller introduces a source of water into the containment region in response to a non-emergency shut down of the reactor module. The source of water is located external to the containment vessel, and the water is introduced into the containment region after the steam generator has initially lowered the temperature of the reactor pressure vessel in response to releasing the steam.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}

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