skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method of detecting leakage of reactor core components of liquid metal cooled fast reactors

Abstract

A method of detecting the failure of a sealed non-fueled core component of a liquid-metal cooled fast reactor having an inert cover gas. A gas mixture is incorporated in the component which includes Xenon-124; under neutron irradiation, Xenon-124 is converted to radioactive Xenon-125. The cover gas is scanned by a radiation detector. The occurrence of 188 Kev gamma radiation and/or other identifying gamma radiation-energy level indicates the presence of Xenon-125 and therefore leakage of a component. Similarly, Xe-126, which transmutes to Xe-127 and Kr-84, which produces Kr-85.sup.m can be used for detection of leakage. Different components are charged with mixtures including different ratios of isotopes other than Xenon-124. On detection of the identifying radiation, the cover gas is subjected to mass spectroscopic analysis to locate the leaking component.

Inventors:
 [1];  [1];  [1]
  1. Richland, WA
Issue Date:
Research Org.:
Hanford Engineering Development Lab., Richland, WA (United States)
OSTI Identifier:
862880
Patent Number(s):
4033813
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
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
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
DOE Contract Number:  
AT(45-1-)2170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; detecting; leakage; reactor; core; components; liquid; metal; cooled; fast; reactors; failure; sealed; non-fueled; component; liquid-metal; inert; cover; gas; mixture; incorporated; xenon-124; neutron; irradiation; converted; radioactive; xenon-125; scanned; radiation; detector; occurrence; 188; kev; gamma; identifying; radiation-energy; level; indicates; presence; similarly; xe-126; transmutes; xe-127; kr-84; produces; kr-85; detection; charged; mixtures; including; ratios; isotopes; subjected; mass; spectroscopic; analysis; locate; leaking; core component; spectroscopic analysis; neutron irradiation; energy level; liquid metal; reactor core; radiation detector; gas mixture; gamma radiation; metal cooled; cover gas; fast reactor; core components; cooled fast; mass spectroscopic; detecting leakage; kev gamma; /376/976/

Citation Formats

Holt, Fred E, Cash, Robert J, and Schenter, Robert E. Method of detecting leakage of reactor core components of liquid metal cooled fast reactors. United States: N. p., 1977. Web.
Holt, Fred E, Cash, Robert J, & Schenter, Robert E. Method of detecting leakage of reactor core components of liquid metal cooled fast reactors. United States.
Holt, Fred E, Cash, Robert J, and Schenter, Robert E. Sat . "Method of detecting leakage of reactor core components of liquid metal cooled fast reactors". United States. https://www.osti.gov/servlets/purl/862880.
@article{osti_862880,
title = {Method of detecting leakage of reactor core components of liquid metal cooled fast reactors},
author = {Holt, Fred E and Cash, Robert J and Schenter, Robert E},
abstractNote = {A method of detecting the failure of a sealed non-fueled core component of a liquid-metal cooled fast reactor having an inert cover gas. A gas mixture is incorporated in the component which includes Xenon-124; under neutron irradiation, Xenon-124 is converted to radioactive Xenon-125. The cover gas is scanned by a radiation detector. The occurrence of 188 Kev gamma radiation and/or other identifying gamma radiation-energy level indicates the presence of Xenon-125 and therefore leakage of a component. Similarly, Xe-126, which transmutes to Xe-127 and Kr-84, which produces Kr-85.sup.m can be used for detection of leakage. Different components are charged with mixtures including different ratios of isotopes other than Xenon-124. On detection of the identifying radiation, the cover gas is subjected to mass spectroscopic analysis to locate the leaking component.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

Patent:

Save / Share: