Safety problems of sodium-water steam generators and their solution in the USSR

Conclusions From the results of experimental studies on models, computer investigations based on methods which have been developed, and the analysis of malfunctions in BN-350 steam generators, it is now possible, to give a fairly complete description of the evolution of breakdown processes for various leaks of water into sodium (large and small leaks) The experience of the BN-350 is of fundamental importance from the point of view of the possibility of combining sodium and water in an NPS scheme and the validity of separating them by one wall in industrial steam generators. It was shown that even when considerable water enters the sodium, it is possible to contain the breakdown processes within the sodium circuit without it disintegrating.