Nuclear reactor neutron shielding
Abstract
A nuclear reactor includes a reactor pressure vessel and a nuclear reactor core comprising fissile material disposed in a lower portion of the reactor pressure vessel. The lower portion of the reactor pressure vessel is disposed in a reactor cavity. An annular neutron stop is located at an elevation above the uppermost elevation of the nuclear reactor core. The annular neutron stop comprises neutron absorbing material filling an annular gap between the reactor pressure vessel and the wall of the reactor cavity. The annular neutron stop may comprise an outer neutron stop ring attached to the wall of the reactor cavity, and an inner neutron stop ring attached to the reactor pressure vessel. An excore instrument guide tube penetrates through the annular neutron stop, and a neutron plug comprising neutron absorbing material is disposed in the tube at the penetration through the neutron stop.
- Inventors:
- Issue Date:
- Research Org.:
- BWXT mPower, Inc., Charlotte, NC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1389838
- Patent Number(s):
- 9761332
- Application Number:
- 14/299,353
- Assignee:
- BWXT mPower, Inc.
- Patent Classifications (CPCs):
-
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
G - PHYSICS G21 - NUCLEAR PHYSICS G21F - PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT
- DOE Contract Number:
- NE0000583
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2014 Jun 09
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 22 GENERAL STUDIES OF NUCLEAR REACTORS
Citation Formats
Speaker, Daniel P, Neeley, Gary W, and Inman, James B. Nuclear reactor neutron shielding. United States: N. p., 2017.
Web.
Speaker, Daniel P, Neeley, Gary W, & Inman, James B. Nuclear reactor neutron shielding. United States.
Speaker, Daniel P, Neeley, Gary W, and Inman, James B. Tue .
"Nuclear reactor neutron shielding". United States. https://www.osti.gov/servlets/purl/1389838.
@article{osti_1389838,
title = {Nuclear reactor neutron shielding},
author = {Speaker, Daniel P and Neeley, Gary W and Inman, James B},
abstractNote = {A nuclear reactor includes a reactor pressure vessel and a nuclear reactor core comprising fissile material disposed in a lower portion of the reactor pressure vessel. The lower portion of the reactor pressure vessel is disposed in a reactor cavity. An annular neutron stop is located at an elevation above the uppermost elevation of the nuclear reactor core. The annular neutron stop comprises neutron absorbing material filling an annular gap between the reactor pressure vessel and the wall of the reactor cavity. The annular neutron stop may comprise an outer neutron stop ring attached to the wall of the reactor cavity, and an inner neutron stop ring attached to the reactor pressure vessel. An excore instrument guide tube penetrates through the annular neutron stop, and a neutron plug comprising neutron absorbing material is disposed in the tube at the penetration through the neutron stop.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {9}
}
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Works referenced in this record:
Porous Bodies of Controlled Densities and Methods of Making Them
patent, October 1964
- Shanta, Peter L.; Bartholomew, George L.; Sturges, Donald G.
- US Patent Document 3,153,636
Nuclear Reactor Comprising A Core Cover
patent, November 1973
- Aubert, Michel
- US Patent Document 3,773,616
Shipping container for nuclear fuels
patent, September 1976
- Housholder, William R.; Greer, Norman L.
- US Patent Document 3,982,134
Support structure for the lateral neutron shield system of a fast reactor core
patent, July 1977
- Gallet, Bernard; Venot, Robert
- US Patent Document 4,038,136
Radiation shield for nuclear reactors
patent, May 1978
- Weissenfluh, John A.
- US Patent Document 4,090,087
Nuclear reactor cavity streaming shield
patent, November 1978
- Klotz, Robert; Stephen, Donald W.
- US Patent Document 4,126,515
Neutron streaming shield for nuclear vessel cavity
patent, March 1987
- Anthony, Andrew J.
- US Patent Document 4,650,643
Permanent cavity seal ring for a nuclear reactor containment arrangement
patent, February 1990
- Swidwa, Kenneth J.; Salton, Robert B.; Marshall, James R.
- US Patent Document 4,904,442
Permanent refueling pool seal
patent, April 1992
- McDonald, Michael S.; Siegel, Edward A.; Roebelen, Jr., George J.
- US Patent Document 5,102,612
Thermal insulating barrier and neutron shield providing integrated protection for a nuclear reactor vessel
patent, December 1997
- Schreiber, Roger B.; Fero, Arnold H.; Sejvar, James
- US Patent Document 5,699,394
Neutron Shielding Material Composition, Shielding Material and Container
patent-application, February 2008
- Hayashi, Noriya
- US Patent Application 10/588396; 20080035891
Nuclear Reactor Vessel Fuel Thermal Insulating Barrier
patent-application, August 2008
- Keegan, C. Patrick; Scobel, James H.; Wright, Richard F.
- US Patent Application 11/743844; 20080198960
Borated Concrete-Rubber
patent-application, October 2010
- Shayer, Zeev
- US Patent Application 12/665241; 20100258751
Incore Instrument Core Performance Verification Method
patent-application, January 2011
- Heibel, Michael D.; Sebastiani, Patrick J.; Prible, Michael C.
- US Patent Application 12/495981; 20110002432
Radial Neutron Reflector
patent-application, October 2013
- Whitten, Andrew C.; Edwards, Michael J.; Ales, Matthew W.
- US Patent Application 13/607940; 20130272470