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Title: Method for monitoring stack gases for uranium activity

Abstract

A method for monitoring the stack gases of a purge cascade of a gaseous diffusion plant for uranium activity. A sample stream is taken from the stack gases and contacted with a volume of moisture-laden air for converting trace levels of uranium hexafluoride, if any, in the stack gases into particulate uranyl fluoride. A continuous strip of filter paper from a supply roll is passed through this sampling stream to intercept and gather any uranyl fluoride in the sampling stream. This filter paper is then passed by an alpha scintillation counting device where any radioactivity on the filter paper is sensed so as to provide a continuous monitoring of the gas stream for activity indicative of the uranium content in the stack gases.

Inventors:
 [1];  [1]
  1. Paducah, KY
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
866579
Patent Number(s):
4742009
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; monitoring; stack; gases; uranium; activity; purge; cascade; gaseous; diffusion; plant; sample; stream; contacted; volume; moisture-laden; air; converting; trace; levels; hexafluoride; particulate; uranyl; fluoride; continuous; strip; filter; paper; supply; roll; passed; sampling; intercept; gather; alpha; scintillation; counting; device; radioactivity; sensed; provide; gas; indicative; content; sample stream; continuous strip; continuous monitoring; uranium content; gas stream; uranium hexafluoride; stack gases; gaseous diffusion; supply roll; stack gas; uranyl fluoride; uranium activity; diffusion plant; /436/422/423/

Citation Formats

Beverly, Claude R, and Ernstberger, Harold G. Method for monitoring stack gases for uranium activity. United States: N. p., 1988. Web.
Beverly, Claude R, & Ernstberger, Harold G. Method for monitoring stack gases for uranium activity. United States.
Beverly, Claude R, and Ernstberger, Harold G. Fri . "Method for monitoring stack gases for uranium activity". United States. https://www.osti.gov/servlets/purl/866579.
@article{osti_866579,
title = {Method for monitoring stack gases for uranium activity},
author = {Beverly, Claude R and Ernstberger, Harold G},
abstractNote = {A method for monitoring the stack gases of a purge cascade of a gaseous diffusion plant for uranium activity. A sample stream is taken from the stack gases and contacted with a volume of moisture-laden air for converting trace levels of uranium hexafluoride, if any, in the stack gases into particulate uranyl fluoride. A continuous strip of filter paper from a supply roll is passed through this sampling stream to intercept and gather any uranyl fluoride in the sampling stream. This filter paper is then passed by an alpha scintillation counting device where any radioactivity on the filter paper is sensed so as to provide a continuous monitoring of the gas stream for activity indicative of the uranium content in the stack gases.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

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