The invention relates to improved systems and methods for inspecting the tubes of a steam generator of a nuclear reactor that involves modeling the steam generator, comparing signals of a tube from an eddy current sensor with aspects of the model to determine whether further analysis is required, employing primary and secondary analysis processes, and producing a combined report of the primary and secondary analysis results.

A sodium-chlorine generator generates electricity. Chlorine gas is combined with sodium metal in a boiler. The reaction is exothermic and generates sodium chloride as a biproduct. The heat can be used to boil water to generate steam. The steam generated can be used to turn a turbine, which produces electricity. The reactor can use a heat exchanger to connect a boiler that is separated from reactor. The rate and output of the reaction can be changed by pressurizing the chlorine gas with the reactor and by preheating the sodium before the reaction. The sodium chloride can be recycled to generate sodium metal and chlorine gas for a subsequent use.

A sodium-chlorine generator generates electricity. Chlorine gas is combined with sodium metal in a boiler. The reaction is exothermic and generates sodium chloride as a biproduct. The heat can be used to boil water to generate steam. The steam generated can be used to turn a turbine, which produces electricity. The reactor can use a heat exchanger to connect a boiler that is separated from reactor. The rate and output of the reaction can be changed by pressurizing the chlorine gas with the reactor and by preheating the sodium before the reaction. The sodium chloride can be recycled to generate sodium metal and chlorine gas for a subsequent use.

A system (10) includes a fluid with components that evaporate at different temperatures, a condenser (12) with an inlet (22) and an outlet (24), a pump (14) with an outlet (28) and with an inlet (26) connected to the outlet (24) of the condenser (12), and an evaporator (16). The evaporator (16) includes an inlet (30) connected to the outlet (28) of the pump (14), an outlet (31), evaporating tubes (38), pool boiling tubes (42), and a fluid distribution system (33) for spraying the fluid over the evaporating tubes (38). The system (10) further includes a turbine (18) with an inlet (44) connected to the outlet (31) of the evaporator (16), an outlet (48) connected to the inlet (22) of the condenser (12), and a drive shaft (46). A generator (20) is connected to the drive shaft (46) of the turbine (18).

A system and method are provided for storing electric energy in the form of thermal energy. A thermoelectric energy storage system includes a working fluid circuit for circulating a working fluid through a heat exchanger, and a thermal storage medium circuit for circulating a thermal storage medium. The thermal storage medium circuit includes at least one hot storage tank, an intermediate temperature storage tank, and a cold storage tank connected together via the heat exchanger. A proportion of the storage medium is redirected to or from the intermediate storage tank from or to the hot or cold storage tank, joining another proportion which flows directly between the cold and hot storage tank.

A nuclear fusor apparatus includes magnetically conductive spherical shell, solid iron ball, annular ferromagnetic guide rails, orbiting members, ignition, and gas outlet for transmitting mixed gas of deuterium and tritium, wherein the annular ferromagnetic guide rails are symmetrically fixed on an outer wall of the spherical shell; the orbiting members are located above the annular ferromagnetic guide rails; the orbiting members cooperate with the annular ferromagnetic guide rails to generate magnetic levitation force and propelling force; a water pipe is positioned inside the spherical shell, an end of the water pipe is connected to a water pump, another end of the water pipe is connected to an air extraction unit; the ignition and the gas outlet are both fixed on the outer wall of the spherical shell, an ignition end of the ignition extends into the spherical shell, and an end of the gas outlet extends into the spherical shell.

A feed-water discharge side of a condenser is connected to a feed-water entry side of an flue gas cooler through a bypass line provided with a steam production preventive pump and with an inlet cutoff valve. A feed-water discharge side of the flue gas cooler is connected to the feed-water entry side of the condenser through a steam production preventive water circulation line provided with an outlet cutoff valve. When a boiler feed-water pump is stopped in boiler fuel cutoff, the inlet and outlet cutoff valves are opened and the steam production preventive pump is activated to cause water to flow through the bypass line into the flue gas cooler, is returned through the steam production preventive water circulation line to the condenser and is circulated.

A feed-water discharge side of a condenser is connected to a feed-water entry side of an flue gas cooler through a bypass line provided with a steam production preventive pump and with an inlet cutoff valve. A feed-water discharge side of the flue gas cooler is connected to the feed-water entry side of the condenser through a steam production preventive water circulation line provided with an outlet cutoff valve. When a boiler feed-water pump is stopped in boiler fuel cutoff, the inlet and outlet cutoff valves are opened and the steam production preventive pump is activated to cause water to flow through the bypass line into the flue gas cooler, is returned through the steam production preventive water circulation line to the condenser and is circulated.

A welding method for making cladding or buttering on an inner surface of a base material, an inner surface of an opening portion formed in the base material, and the cut surface formed in such a manner that the cut surface is continuous from the inner surface of the base material to the inner surface of the opening portion, wherein the welding method includes a step of forming a protruding portion on the base material in advance, the protruding portion including a temporary welding surface extending toward the center of the opening portion in such a manner that the temporary welding surface is uniformly continuous to the inner surface of the base material and including the cut surface buried therein.

A steam generator includes a shroud and an annular stepwise helical baffle extending along at least part of a length of the shroud. There is a riser located in a central region of the steam generator. The helical baffle is made up of at least one annuler sector of flat plates. The edges of the flat plates may be straight or corrugated.