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Assessment of Radon-220 (Thoron) releases from fuel reprocessing at Hanford

Technical Report ·
OSTI ID:5235750
; ; ; ; ; ;
This is the final report of the Working Group on Thoron Issues established in June 1988. Preliminary investigations estimated source terms of {sup 220}Rn (thoron) and described the need for {sup 220}Rn measurements in effluents, the environment, and the workplace. An Action Plan and Schedule was established and completed to obtain these measurements. This report describes the results of these measurements and the consequent findings and conclusions of the Working Group. A method was developed for measuring {sup 220}Rn directly utilizing charcoal canisters. Stack samples and workplace air samples were taken with this method. A system for measuring {sup 220}Rn with passive charcoal canisters was also established. Environmental levels of {sup 220}Rn daughters were measured at 21 sampling sites over a period of 6 mo. 16 figs., 6 tabs.
Research Organization:
Westinghouse Hanford Co., Richland, WA (USA)
Sponsoring Organization:
DOE/DP
DOE Contract Number:
AC06-87RL10930
OSTI ID:
5235750
Report Number(s):
WHC-EP-0317; ON: DE90004786
Country of Publication:
United States
Language:
English

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