Fast Reactors and Accelerator Driven Systems Knowledge Base

Conference Article: Fast reactor operating experience gained in Russia: Analysis of anomalies and abnormal operation cases

Ashurko, Y.M.; Baklushin, R.P.; Zagorulko, Y.I.; Ivanenko, V.N.; Matveyev, V.P. (State Scientific Centre of the Russian Federation, Institute of Physics and Power Engineering, Obninsk (Russian Federation)); Vasilyev, B.A. (Experimental Design Bureau of Machine Building, Nizhny Novgorod (Russian Federation))

Abstract

Review of various anomalous events and abnormal operation experience gained in the process of Russian fast reactors operation is given in the paper. The main information refers to the BN-600 demonstration reactor operation. Statistical data on sodium leaks and steam generator failures are presented, and sources of these events and countermeasures taken to avoid their appearance on the operating reactors as well as related changes made in the BN-800 reactor design are considered. In the paper, some features of impurities behaviour are considered in various modes of the BN-600 reactor operation. Information is given on the impurities ingress into the circuits, on abnormal situation emerged in the process of the BN-600 reactor operation and its probable cause. Information is presented on the event related to the increased torque of the BN-600 reactor central rotating column and repair works performed.

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key words: beloyarsk-3 reactor; failures; leaks; reactor maintenance; reactor operation; repair; sodium
Reference:
Technical committee meeting on unusual occurrences during LMFR operation. Vienna (Austria) 9-13 Nov 1998
International Atomic Energy Agency, Vienna (Austria)
IAEA-TECDOC--1180, pp:118-145