Analysis of the Dynamics of Hydrogen Ingress into Secondary Sodium after Replacement of the BN-600 Power Unit Steam Generator Stages

5/29/2012 2011 - #01 Global safety, reliability and diagnostics of nuclear power installations

Nosov Yu.V. Tsygankov G.N. Beltyukov A.I. Govorov P.P. Kuznetsov A.A.

https://doi.org/10.26583/npe.2011.1.12

The technique of calculation of hydrogen ingress into the secondary circuit of the BN-600 power unit after replacement of the PGN200M steam generator stages is presented. The hydrogen diffusion from the water-steam circuit from the new evaporator stages of which the heat exchange surfaces have not been subjected to the passivation yet is shown to be the main source of ingress.