Abstract: A nuclear reactor containment cooling system includes a containment vessel having a drywell and a wetwell, a cooling condenser submerged in a cooling pool of water located outside the containment vessel, a vent line extending from the condenser to a suppression pool disposed in the wetwell, and at least one drain line extending from the condenser to a condensate drain tank located in the drywell. An end of the drain line is vertically submerged below the surface of a pool of water in the drain tank. To enhance flow, a blower can be located in the drain line. The containment cooling system can include a drywell gas recirculation subsystem coupled to the vent line, and including a suction pipe coupled to the vent line, at least one valve located in the suction pipe, at least one blower coupled to the suction line, and a discharge pipe in flow communication with the drywell.

Abstract: A nuclear reactor containment cooling system includes a containment vessel having a drywell and a wetwell, a cooling condenser submerged in a cooling pool of water located outside the containment vessel, a vent line extending from the condenser to a suppression pool disposed in the wetwell, and at least one drain line extending from the condenser to a condensate drain tank located in the drywell. An end of the drain line is vertically submerged below the surface of a pool of water in the drain tank. To enhance flow, a blower can be located in the drain line. The containment cooling system can include a drywell gas recirculation subsystem coupled to the vent line, and including a suction pipe coupled to the vent line, at least one valve located in the suction pipe, at least one blower coupled to the suction line, and a discharge pipe in flow communication with the drywell.

Abstract: An electrical connectors connects with a mating fitting having one or more conductive pins. The connector include a housing, an carriage movably mounted within the housing, a conductive claim mounted to the carriage and including a movable portion which presses against one of the conductive pins when the connector is connected with the fitting, Hinge frictional forces need not be overcome when connecting for disconnecting the connector from the fitting.

Abstract: A universal adapter that can be adjusted to engage with many types of sockets. On one end, the adapter has at least two holes which can engage with a plug of an electric appliance. These holes are electrically connected with electrically conductive pin members, which are selectively extensible through one of a plurality of pairs of apertures on the other end of the adapter and are engageable with a socket. At least two pairs of these apertures are inclined to one another at an angle. The adapter also includes a third pin member made of an electrically insulating material which is extensible through an aperture on said other end of the adapter and which can be engaged with the ground pin hole of a socket.

Abstract: There is disclosed an electric plug including a body member to which switches and two electrically conductive legs are mounted, in which an electric cable including at two electric wires is connectable to the body member, and the legs are electrically connectable to a source of electricity, in which one of the electrically conductive legs is electrically conectable in series with one of the elelctric wires via a fuse which is releasably attachable to and movable with the switches, and the switches are operable to move the fuse between a position in which the fuse is in electrical connection with the leg, and a position in which the fuse is out of electrical connection with the leg.

Abstract: Systems, methods, and apparatus for preventing steam leakage between a drywell and a wetwell in a nuclear reactor are described. In accordance with one embodiment of the present invention, the vacuum breaker of the nuclear reactor is coupled to a vacuum breaker condensing system which includes a condenser and a steam inlet pipe. The steam inlet pipe is substantially hollow and includes a first end, a second end, and a loop seal between the first and second ends. The first end of the pipe is positioned adjacent the drywell and the second end of the pipe is coupled to the vacuum breaker. The condenser is positioned proximate the steam inlet pipe and includes an inlet, an outlet, and a plurality of condenser tubes. The condenser inlet and condenser outlet are each coupled to a pool of water, e.g., the Gravity Driven Cooling System pool, and configured to draw water from the pool of water and through the condenser tubes to substantially condense steam flowing through the steam inlet pipe.

Abstract: An electrical plug is disclosed in which the plug body having the electrically conductive pins is pivotally attached to an attachment body such that the plug body and attachment body may pivot with respect to each other about a pivot axis. The attachment body is connected to an electrical wire and the electrical conductors in the wire are connected to each of the conductive pins at the pivot axis so as not to interfere with the pivoting motion between the plug body and the attachment body. Such pivoting movement enables the plug body to be oriented in substantially any fashion with respect to the electric wire. The wire may extend from a side of the plug body, or outwardly from the plug body opposite the electrically conductive pins. Such pivoting movement enables the electrical device to which the wire is connected to be located virtually anywhere with respect to an electrical outlet.