Search - Number 14 - CONSERVATIVE GROUND OF QUALIFICATION BRU-A VVER-1000 IN MODES OF INSTABILITY OF DIPHASIC ENVIRONMENT

CONSERVATIVE GROUND OF QUALIFICATION BRU-A VVER-1000 IN MODES OF INSTABILITY OF DIPHASIC ENVIRONMENT
Cover not present CONSERVATIVE GROUND OF QUALIFICATION BRU-A VVER-1000  IN MODES OF INSTABILITY OF DIPHASIC ENVIRONMENT
Category: Number 14
Publication: 14
Summary

The article first presents grounds and conditions of origin of hydraulic shocks in the VVER system of safety relief valves, caused interchannel heat hydrodynamic instability of biphasic medium. It is supposed conservatively that origin of hydraulic shocks caused instability of biphasic stream determines the unavail-ability to close of safety relief valves. It is established that the modes of hydraulic shocks in safety relief valves of VVER 1000 (B-320) at the fully opened valves are not typical for the conditions of accidents with intercontour leakages.
Keywords: fast-acting reducing valve, water-moderated reactor, hydraulic shock, heat-hydrodynamic instability, biphasic flow.