Determination of the radioactive nuclides present in the off-gas streams generated by the head-end steps in reprocessing HTGR type fuels
Conference
·
OSTI ID:4392364
- ed.
From twelfth AEC air cleaning conference; Oak Ridge, Tennessee, USA (28 Aug 1972). In proceedings of the twelfth AEC air cleaning conference. Results of studies to determine the behavior of radioactive nuclides in the gaseous waste streams generated during the reprocessing of spent High Temperature Gas-Cooled Reactor (HTGR) fuel are presented. The fuel is in the form of coated particles of uranium and thorium, bonded into fuel sticks, and inserted into holes in large hexagonal graphite blocks. Spent fuel is reprocessed to recover the bred /sup 233/U and the unburned /sup 235/U. Preliminary tests, primarily to measure /sup 85/Kr and tritium release, were made using Dragon fuel compacts cortaining either BISO-coated (U-Th)O/sub 2/ solgel particles or both TRIS)-coated ThC/sub 2/ and TRISO-coated UC/sub 2/ particles. Burning the BISO-coated (U-Th)O/sub 2/ particles released the bulk of the /sup 85/Kr (97-98%) and the tritium (98-99%); the remainder was released during the leaching step. The initial burning of the mixed TRISO-coated ThC/sub 2/ and TRISO-coated UC/sub 2/ fuel released ~7.4% of the /sup 85/Kr. Subsequent grind-burn steps released an additional 7.4% of the / sup 85/Kr from the ThC/sub 2/ particles and 84.5% from t he UC/sub 2/ particles. (DHM)
- Research Organization:
- Oak Ridge National Lab., TN; Harvard Univ., Boston, Mass. (USA). Harvard Air Cleaning Lab.; Oak Ridge National Lab., Tenn. (USA)
- NSA Number:
- NSA-29-004978
- OSTI ID:
- 4392364
- Report Number(s):
- CONF-720823--P2
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
Head-end reprocessing studies with irradiated high temperature gas-cooled reactor (HTGR) fuels
Capsule HRB-15B postirradiation examination report
Postirradiation examination of recycle test elements from the Peach Bottom Reactor
Conference
·
Mon Dec 31 23:00:00 EST 1979
·
OSTI ID:5088901
Capsule HRB-15B postirradiation examination report
Technical Report
·
Mon Jun 01 00:00:00 EDT 1981
·
OSTI ID:6332616
Postirradiation examination of recycle test elements from the Peach Bottom Reactor
Technical Report
·
Thu Nov 30 23:00:00 EST 1978
·
OSTI ID:6472414
Related Subjects
*KRYPTON 85-- RADIATION MONITORING
*OFF-GAS SYSTEMS-- RADIATION MONITORING
*SPENT FUELS-- REPROCESSING
*TRITIUM-- RADIATION MONITORING
GASEOUS WASTES
HEAD END PROCESSES
HTGR TYPE REACTORS
N40450* --Chemistry--Radiochemistry & Nuclear Chemistry-- Reactor Fuel Processing
RADIOACTIVE WASTES
THORIUM CARBIDES
URANIUM CARBIDES
*OFF-GAS SYSTEMS-- RADIATION MONITORING
*SPENT FUELS-- REPROCESSING
*TRITIUM-- RADIATION MONITORING
GASEOUS WASTES
HEAD END PROCESSES
HTGR TYPE REACTORS
N40450* --Chemistry--Radiochemistry & Nuclear Chemistry-- Reactor Fuel Processing
RADIOACTIVE WASTES
THORIUM CARBIDES
URANIUM CARBIDES