摘要:
The present invention relates to a nuclear fuel body comprising tungsten network and a method for manufacturing the same, more particularly, a nuclear fuel body in which tungsten network is continuously formed over the entire or some parts of a sintered body and a method for manufacturing the same. The sintered body in the nuclear fuel body of the present invention contains tungsten network having excellent heat conductivity, leading to the enhancement of heat conductivity of the nuclear fuel sintered body itself with decreasing the temperature of the nuclear fuel, so that it can contribute to the improvement in safety and performance of nuclear fuel.
摘要:
The present invention relates to a zirconium alloy having excellent corrosion resistance and mechanical properties and a method for preparing a nuclear fuel cladding tube by zirconium alloy. More particulary, the present invention is directed to a zirconium alloy comprising Zr-aNb-bSn-cFe-dCr-eCu (a=0.05-0.4 wt%, b=0.3-0.7 wt%, c=0.1-0.4 wt%, d=0-0.2 wt% and e=0.01-0.2 wt%, provided that Nb+Sn=0.35-1.0 wt%), and to a method for preparing a zirconium alloy nuclear fuel cladding tube, comprising melting a metal mixture comprising of the zirconium and alloying elements to obtain ingot, forging the ingot at β phase range, β-quenching the forged ingot at 1015-1075 °c, hot-working the quenched ingot at 600-650 °C, cold-working the hot-worked ingot in three to five passes, with intermediate vacuum annealing and final vacuum annealing the worked ingot at 460-540 °C, which can be applied to the core components in a light water and a heavy water atomic reactor type nuclear power plant.
摘要:
There are provided a nuclear power plant dismantling method and apparatus. The nuclear power plant dismantling method includes: selecting a nuclear reactor to be dismantled; and performing nuclear power plant dismantling work on the nuclear reactor through a nuclear reactor dismantling apparatus, wherein the nuclear reactor dismantling apparatus includes: a frame unit shielding the nuclear reactor to prevent contaminants in the nuclear reactor from being released to the outside; a cutting module provided on the frame unit and performing cutting work on the nuclear reactor; a link fixing module having a hollow area formed therein, entering an internal space of the nuclear reactor to link the frame unit and the nuclear reactor with each other, and having a bar shape; and a purging module entering the hollow area of the link fixing module and performing purging on the inside of the nuclear reactor in order to secure safety in the cutting work.
摘要:
A vibration measurement error determination method according to an embodiment of the present invention comprises: a vibration data acquisition step for acquiring vibration data by measuring a vibration generated in a structure; a first determination step for determining, on the basis of a preset error data selection rule, whether the vibration data is data generated by a measurement error; a second determination step for using a machine-learning algorithm to determine whether the vibration data is data generated by a measurement error; and a final determination step for determining, on the basis of the results determined in the first determination step and the second determination step, whether the vibration data is data generated by a measurement error.
摘要:
The present invention relates to an integrated nuclear reactor system including a double containment structure using liquid nitrogen, the nuclear reactor system comprising: a reactor vessel; a reactor core disposed in the reactor vessel; a steam generator disposed in the reactor vessel and located above the reactor core; a first containment vessel surrounding the reactor vessel with a first space interposed therebetween; a second containment vessel surrounding the first containment vessel with a second space interposed therebetween; and a liquid nitrogen supply unit supplying liquid nitrogen into the second space.
摘要:
The present invention relates to a cutting apparatus for a fuel basket containing spent nuclear fuel in a heavy water reactor and, more particularly, to a cutting apparatus for a fuel basket containing spent nuclear fuel in a heavy water reactor, which enables the spent nuclear fuel contained inside to be withdrawn without damage through welding bead cutting rather than through-cutting, and enables cutting chips generated during a cutting operation to be neatly and easily recovered without scattering on the bottom of a storage tank. To this end, the present invention provides a cutting apparatus for a fuel basket containing spent nuclear fuel in a heavy water reactor, the apparatus comprising: a base; a vertical support installed on one side of the base; a rotary table installed to reciprocate between the one side and the other side of the base, and to rotate horizontally on the base; a horizontal support installed to extend from the upper end of the vertical support toward the rotary table in a horizontal direction; a side cutting means installed on the vertical support and protruding toward the rotary table so as to cut a side welding bead of a fuel basket mounted on the rotary table; and an upper cutting means installed on the horizontal support and protruding toward the rotary table so as to cut an upper welding bead of the fuel basket mounted on the rotary table.
摘要:
A water level measurement system according to an embodiment includes a support pipe installed in a water tank filled with a fluid to measure a water level and extending in a depth direction of the water tank, a support rod disposed on one side of the support pipe based on a central axis of the support pipe and extending in the depth direction of the water tank, a plurality of ultrasonic probes attached to the support rod and generating ultrasonic waves, and a water level calculator connected to the plurality of ultrasonic probes and calculating the water level of the water tank.
摘要:
An artificial intelligence (Al) feedback method includes: providing input1 and input2, providing an initial condition for a popularity frequency value or ranking value of information related to input 2 from input 1, generating a two-dimensional (2D) information table from the initial condition, adding the popularity frequency value or ranking value to corresponding coordinates in the 2D information table and matching knowledge, generating a 2D pseudolinear transformation table from the 2D information table, performing pseudolinear transformation multiple times to form a 2D unique characteristic table and deriving information of coordinates whose characteristic vector is not changed as a deep truth value, and organizing and storing a context of knowledge formed by connecting the deep truth value by category.
摘要:
A reactor core for load following operation includes a reactor core body, a plurality of load-following control rods that are inserted into the reactor core body in an axial direction in response to an output set for the load following operation, overlap each other in the axial direction, and are simultaneously raised and lowered, and a first power axial offset control rod that is spaced apart from the plurality of load-following control rods in a plane, has an end portion positioned below a center of the reactor core body in the axial direction, and is raised and lowered only below the center of the reactor core body in a direction to compensate for a fluctuation in a power axial offset due to the insertion of the plurality of load-following control rods.