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U.S. Department of Energy
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Continuous radioiodine cleanup filter-efficiency monitor

Technical Report ·
OSTI ID:6680271
The purpose of this study was to develop an on-line radioiodine monitor to continuously measure the retention efficiency of radioiodine cleanup filters. The evaluated approach separates the radioiodine from short-lived noble gases using selective permeation, collects the separated iodine on a small charcoal bed and measures it on-line by gamma-ray spectrometry. The monitor was evaluated in the laboratory and at a reactor off-gas system; results indicate separation factors greater than 10/sup 6/ for Xe and Kr can be achieved and 5 x 10/sup -13/ ..mu..Ci /sup 131/I/cc can be detected with a daily averaging time.
Research Organization:
Exxon Nuclear Idaho Co., Inc., Idaho Falls (USA)
DOE Contract Number:
AC07-79ID01675
OSTI ID:
6680271
Report Number(s):
ENICO-1121; ON: DE83004724
Country of Publication:
United States
Language:
English