Dr. D. R. deBoisblanc (Ebasco), Chief Consulting Nuclear Engineer and Manager of “Molten Salt Group” in USA, was invited by Atomic Energy Society of Japan. In its Annual Meeting, March 1979, he gave a special lecture: “Progress in Molten Salt Reactor Technology Developments”. On March 29th and 30th, a special discussion meeting on MSBR was held with him. A brief review of fruitful results of these meetings is presented here, which includes the following items:
(1) Important technical improvements made by Ebasco over the original ORNL design of MSBR, (2) Measures on Te attack of Hastelloy N, (3) Improvement of graphite technology, (4) Impurity monitor of fuel salt, (5) Development of continuous reprocessing facility, (6) Problems in the failure of the above facility, (7) Frozen wall technique, (8) Reactor control rod, (9) Emergency dump tank, (10) Drain valves, (11) Nuclear proliferation problems and DMSR, (12) Status of USA and foreign countries on R & D of MSBR, (13) Approaches to strengthen cooperative MSBR development between USA and Japan.
MSBR has been an exclusive province of ORNL. As a result, there remains, even today, a feeling that it is a difficult technology, despite its conceptual simplicity. MSBR will probably become the most effective and beautiful breeder from the viewpoints of safety and economics.
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