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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