Abstract: A mounting base has upturned edges that can be used in tile applications to hold a magnetized decorator tile. The mounting base may be a powder coated galvanized metal box, for example, that may retain a decorator tile having a magnet attached to a backside thereof. The mounting base may be installed in a tile installation at a location where a consumer may desire a decorator tile. The consumer may be able to place, remove and exchange various decorator tiles in the mounting base affordably and with ease, without compromising the integrity of the rest of the tile. The mounting base may be sized and shaped to accept various standard tile sizes, as well as custom sizes and shapes.

Abstract: A boiling water reactor having a regulating valve for placing the wetwell in flow communication with an intake duct of the passive containment cooling system. This subsystem can be adjusted to maintain the drywell pressure at (or slightly below or above) wetwell pressure after the initial reactor blowdown transient is over. This addition to the PCCS design has the benefit of eliminating or minimizing steam leakage from the drywell to the wetwell in the longer-term post-LOCA time period and also minimizes the temperature difference between drywell and wetwell. This in turn reduces the rate of long-term pressure buildup of the containment, thereby extending the time to reach the design pressure limit.