Reduction of 41Ar Environmental Releases at Research Reactors.
ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD
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The reactor facility at the Armed Forces Radiobiology Research Institute consists of a TRIGA Mark-F reactor with two large walk-in exposure rooms and a pneumatic tube facility. Operation of the reactor adjacent to these rooms results in signigicant 41Ar production rated due to the high thermal neutron leakage from the core and from the albedo off the walls. The leakage and albedo have been reduced by placing panels painted with gadolinium-loaded paint on the walls and ceiling of the rooms and reactor tank protrusion. Calculations and measurements show that the 41Ar production rate and consequently the effluent release to the environment have been decreased by a factor of 10 to 20, depending on the operational configuration of the reactor. Author
- Radioactivity, Radioactive Wastes and Fission Products