Effectiveness of Containment Sprays in Containment Management

摘要

A limited study has been performed assessing the effectiveness of containment sprays to mitigate particular challenges which may occur during a severe accident. Certain aspects of thee specific topics related to using sprays under severe accident conditions were investigated. The first was the effectiveness of sprays connected to an alternate water supply and pumping source because the actual containment spray pumps are inoperable. This situation could occur during a station blackout. The second topic concerned the adverse as well as beneficial effects of using containment sprays during severe accident scenarios where the containment atmosphere contains substantial quantities of hydrogen along with steam. The third topic was the feasibility of using containment sprays to moderate the consequences of Direct Containment Heating (DCH).