K. Kunstler et al., MONITORING AND CONTROL OF IMPURITIES IN THE PRIMARY CIRCUIT OF THE IBR-2 REACTOR, Journal of nuclear materials, 200(2), 1993, pp. 169-176
The periodically pulsed IBR-2 reactor of the Joint Institute for Nucle
ar Research in Dubna (Russian Federation) uses liquid sodium as the co
olant for the fuel elements. The installation of sodium circuits in th
e reactor system poses numerous tasks in regard of control and safety.
Electrochemical cells with solid electrolytes were installed for the
measurement of the oxygen activity in the sodium of the primary circui
t. The carbon contained in the sodium was determined by sampling using
the vacuum distillation method. Metallic impurities were ascertained
by atomic emission spectrometry while radiochemical impurities were an
alysed on whole samples or from the distillation residues. The results
of the investigations are presented and discussed.