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Title: Method for monitoring irradiated fuel using Cerenkov radiation

Abstract

A method is provided for monitoring irradiated nuclear fuel inventories located in a water-filled storage pond wherein the intensity of the Cerenkov radiation emitted from the water in the vicinity of the nuclear fuel is measured. This intensity is then compared with the expected intensity for nuclear fuel having a corresponding degree of irradiation exposure and time period after removal from a reactor core. Where the nuclear fuel inventory is located in an assembly having fuel pins or rods with intervening voids, the Cerenkov light intensity measurement is taken at selected bright sports corresponding to the water-filled interstices of the assembly in the water storage, the water-filled interstices acting as Cerenkov light channels so as to reduce cross-talk. On-line digital analysis of an analog video signal is possible, or video tapes may be used for later measurement using a video editor and an electrometer. Direct measurement of the Cerenkov radiation intensity also is possible using spot photometers pointed at the assembly.

Inventors:
; ;
Issue Date:
OSTI Identifier:
6614151
Assignee:
Dept. of Energy TIC; ERA-06-015678; EDB-81-045324
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; PHOTOMETERS; SPENT FUEL STORAGE; NUCLEAR MATERIALS MANAGEMENT; CHERENKOV RADIATION; FUEL POOLS; SAFEGUARDS; ELECTROMAGNETIC RADIATION; MANAGEMENT; MEASURING INSTRUMENTS; RADIATIONS; STORAGE 220200* -- Nuclear Reactor Technology-- Components & Accessories; 055001 -- Nuclear Fuels-- Safeguards, Inspection, & Accountability-- Technical Aspects

Citation Formats

Dowdy, E.J., Nicholson, N., and Caldwell, J.T. Method for monitoring irradiated fuel using Cerenkov radiation. United States: N. p., 1980. Web.
Dowdy, E.J., Nicholson, N., & Caldwell, J.T. Method for monitoring irradiated fuel using Cerenkov radiation. United States.
Dowdy, E.J., Nicholson, N., and Caldwell, J.T. Wed . "Method for monitoring irradiated fuel using Cerenkov radiation". United States.
@article{osti_6614151,
title = {Method for monitoring irradiated fuel using Cerenkov radiation},
author = {Dowdy, E.J. and Nicholson, N. and Caldwell, J.T.},
abstractNote = {A method is provided for monitoring irradiated nuclear fuel inventories located in a water-filled storage pond wherein the intensity of the Cerenkov radiation emitted from the water in the vicinity of the nuclear fuel is measured. This intensity is then compared with the expected intensity for nuclear fuel having a corresponding degree of irradiation exposure and time period after removal from a reactor core. Where the nuclear fuel inventory is located in an assembly having fuel pins or rods with intervening voids, the Cerenkov light intensity measurement is taken at selected bright sports corresponding to the water-filled interstices of the assembly in the water storage, the water-filled interstices acting as Cerenkov light channels so as to reduce cross-talk. On-line digital analysis of an analog video signal is possible, or video tapes may be used for later measurement using a video editor and an electrometer. Direct measurement of the Cerenkov radiation intensity also is possible using spot photometers pointed at the assembly.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {5}
}