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Title: Dry, portable calorimeter for nondestructive measurement of the activity of nuclear fuel

Abstract

The activity of a quantity of heat-producing nuclear fuel is measured rapidly, accurately and nondestructively by a portable dry calorimeter comprising a preheater, an array of temperature-controlled structures comprising a thermally guarded temperature-controlled oven, and a calculation and control unit. The difference between the amounts of electric power required to maintain the oven temperature with and without nuclear fuel in the oven is measured to determine the power produced by radioactive disintegration and hence the activity of the fuel. A portion of the electronic control system is designed to terminate a continuing sequence of measurements when the standard deviation of the variations of the amount of electric power required to maintain oven temperature is within a predetermined value.

Inventors:
 [1];  [2];  [3]
  1. Elmhurst, IL
  2. Clarendon Hills, IL
  3. Hinsdale, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
862722
Patent Number(s):
3995485
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01K - MEASURING TEMPERATURE
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
dry; portable; calorimeter; nondestructive; measurement; activity; nuclear; fuel; quantity; heat-producing; measured; rapidly; accurately; nondestructively; comprising; preheater; array; temperature-controlled; structures; thermally; guarded; oven; calculation; control; unit; difference; amounts; electric; power; required; maintain; temperature; determine; produced; radioactive; disintegration; hence; portion; electronic; designed; terminate; continuing; sequence; measurements; standard; deviation; variations; amount; predetermined; value; power required; electric power; nuclear fuel; predetermined value; control unit; producing nuclear; nondestructive measurement; /374/

Citation Formats

Beyer, Norman S, Lewis, Robert N, and Perry, Ronald B. Dry, portable calorimeter for nondestructive measurement of the activity of nuclear fuel. United States: N. p., 1976. Web.
Beyer, Norman S, Lewis, Robert N, & Perry, Ronald B. Dry, portable calorimeter for nondestructive measurement of the activity of nuclear fuel. United States.
Beyer, Norman S, Lewis, Robert N, and Perry, Ronald B. Thu . "Dry, portable calorimeter for nondestructive measurement of the activity of nuclear fuel". United States. https://www.osti.gov/servlets/purl/862722.
@article{osti_862722,
title = {Dry, portable calorimeter for nondestructive measurement of the activity of nuclear fuel},
author = {Beyer, Norman S and Lewis, Robert N and Perry, Ronald B},
abstractNote = {The activity of a quantity of heat-producing nuclear fuel is measured rapidly, accurately and nondestructively by a portable dry calorimeter comprising a preheater, an array of temperature-controlled structures comprising a thermally guarded temperature-controlled oven, and a calculation and control unit. The difference between the amounts of electric power required to maintain the oven temperature with and without nuclear fuel in the oven is measured to determine the power produced by radioactive disintegration and hence the activity of the fuel. A portion of the electronic control system is designed to terminate a continuing sequence of measurements when the standard deviation of the variations of the amount of electric power required to maintain oven temperature is within a predetermined value.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {1}
}

Patent:

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