RECENT PROGRESS IN HTGR INTERNAL FISSION PRODUCT TRAPPING STUDIES
A study was made of the high-temperature fission product trapping capabilities of various charcoals and metal-charcoal combinations in an attempt to develop a satisfactory trap for use in gas-cooled reactors. Tests of the iodine and tellurium trapping capabilities of silver and copper coated charcoal at temperatures up to 900 deg F were conducted. It was observed that metal coated charcoal exhibits much better holdup characteristics compared to metal mesh or turn ings alone. The capacity for delaying radioiodine was measured in terms of "Reactor Equivalent Delay" (in days) to give an indication of how long a particular iodine atom entering one of the traps could be expected to remain. It was found that coconut charcoals exhibited greater delay characteristics than charcoals of coke origin. A strong dependence of delay time on temperature was observed. Silver coatings caused a longer delay than copper. (M.C.G.)
- Research Organization:
- General Atomic Div., General Dynamics Corp., San Diego, Calif.
- NSA Number:
- NSA-15-015480
- OSTI ID:
- 4040471
- Report Number(s):
- GAMD-2079
- Country of Publication:
- United States
- Language:
- English
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