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Report Date: January 1994
Appendices: No
Abstract
Preliminary feasibility analysis has been conducted to evaluate placing a nuclear reactor containment building inside a large hyperbolic cooling tower. The geometry of the design, the amount of water available, and the shielding provided by the cooling tower are beneficial to the safety characteristics of the containment under accident conditions. However, under accident conditions, if the cooling tower is not in operation, the large air mass in the tower does not allow for any significant additional buoyancy affects on the containment surface.
An annular air chimney around the containment was found to be effective in removing 11 MWth through air convection. A continuously spraying watertank on top of the containment allows for a completely passive decay heat removal system. If used as an external water source, 5% of the water inventory in the cooling tower pond is sufficient to flood the containment interior to a depth of 14.6 ft. The packing, and the height of the tower, provide major scrubbing and dispersing sources for any uncontrolled radioactive leak. No major adverse effects were found on the functions of the containment or cooling tower by combining the two. A design incorporating the two structures is proposed keeping the considerations above in mind.
Program: ANP : Advanced Nuclear Power Program
Type: TR
RPT. No.: 20