Portable instrument for inspecting irradiated nuclear fuel assemblies
Abstract
A portable instrument for measuring induced Cerenkov radiation associated with irradiated nuclear fuel assemblies in a water-filled storage pond is disclosed. The instrument includes a photomultiplier tube and an image intensifier which are operable in parallel and simultaneously by means of a field lens assembly and an associated beam splitter. The image intensifier permits an operator to aim and focus the apparatus on a submerged fuel assembly. Once the instrument is aimed and focused, an illumination reading can be obtained with the photomultiplier tube. The instrument includes a lens cap with a carbon-14/phosphor light source for calibrating the apparatus in the field.
- Inventors:
-
- Los Alamos, NM
- (Santa Fe, NM)
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 865323
- Patent Number(s):
- 4497769
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- portable; instrument; inspecting; irradiated; nuclear; fuel; assemblies; measuring; induced; cerenkov; radiation; associated; water-filled; storage; pond; disclosed; photomultiplier; tube; image; intensifier; operable; parallel; simultaneously; means; field; lens; assembly; beam; splitter; permits; operator; aim; focus; apparatus; submerged; aimed; focused; illumination; reading; obtained; cap; carbon-14; phosphor; light; source; calibrating; portable instrument; image intensifier; lens assembly; irradiated nuclear; fuel assemblies; beam splitter; light source; nuclear fuel; fuel assembly; photomultiplier tube; cerenkov radiation; storage pond; field lens; multiplier tube; /376/250/976/
Citation Formats
Nicholson, Nicholas, Dowdy, Edward J, Holt, David M, and Stump, Jr., Charles J. Portable instrument for inspecting irradiated nuclear fuel assemblies. United States: N. p., 1985.
Web.
Nicholson, Nicholas, Dowdy, Edward J, Holt, David M, & Stump, Jr., Charles J. Portable instrument for inspecting irradiated nuclear fuel assemblies. United States.
Nicholson, Nicholas, Dowdy, Edward J, Holt, David M, and Stump, Jr., Charles J. Tue .
"Portable instrument for inspecting irradiated nuclear fuel assemblies". United States. https://www.osti.gov/servlets/purl/865323.
@article{osti_865323,
title = {Portable instrument for inspecting irradiated nuclear fuel assemblies},
author = {Nicholson, Nicholas and Dowdy, Edward J and Holt, David M and Stump, Jr., Charles J.},
abstractNote = {A portable instrument for measuring induced Cerenkov radiation associated with irradiated nuclear fuel assemblies in a water-filled storage pond is disclosed. The instrument includes a photomultiplier tube and an image intensifier which are operable in parallel and simultaneously by means of a field lens assembly and an associated beam splitter. The image intensifier permits an operator to aim and focus the apparatus on a submerged fuel assembly. Once the instrument is aimed and focused, an illumination reading can be obtained with the photomultiplier tube. The instrument includes a lens cap with a carbon-14/phosphor light source for calibrating the apparatus in the field.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1985},
month = {Tue Jan 01 00:00:00 EST 1985}
}
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