Abstract:
본 발명은 원자로냉각재에 아연수용액을 주입하는 장치 및 방법에 관한 것으로, 본 발명은 아연수용액을 제조하고 저장하는 탱크부와, 상기 탱크부의 아연수용액을 인출하여 공급하는 공급관부와, 상기 공급관부를 통해 인출된 아연수용액을 미량 및 정량으로 주입관부에 공급하여 원자로냉각재에 아연수용액이 주입되도록 하는 제1주입펌프부와, 상기 공급관부의 아연수용액을 상기 주입관부로 대량공급하여 상기 주입관부의 압력을 상기 제1주입펌프부에 의한 공급시에 비하여 빠르게 높일 수 있는 바이패스관부와, 상기 주입관부의 압력이 설정 압력 이상인 경우 주입관부 내의 아연수용액을 상기 탱크부로 재순환시키는 재순환관부와, 상기 탱크부에서 아연수용액의 제조를 제어하며, 저장된 아연수용액의 수위에 따라 상기 제1주입펌프부의 동작을 제어함과 아울러 상기 주입관부의 압력에 따라 상기 제1주입펌프부의 동작을 제어하는 제어부를 포함한다. 본 발명은 아연수용액을 저장하는 탱크의 수위, 공급되는 유량을 검출하여 그 검출결과에 따라 주입펌프의 운전을 제어함으로써, 아연 주입의 안정성을 향상시킬 수 있는 효과가 있다.
Abstract:
Crystal habit modifiers (CHM) are provided to ameliorate deposit-related concerns in nuclear plant systems. The principal targets for utilization of crystal habit modifiers are Pressure Water Reactor (PWR) primary-side fuel rod crud and secondary-side steam generator deposits and Boiling Water Reactor (BWR) coolant system deposits.
Abstract:
A method to analyze crystals in a deposit on a surface of a nuclear generating station heating surface, wherein the method extracts a sample of material from the surface of the nuclear generating station heating surface and also includes conducting at least one of a high resolution scanning electron microscope/energy dispersive X-ray spectrometry of the sample and a scanning transmission electron microscope/selected area electron diffraction/spot and elemental mapping analysis of the sample.
Abstract:
A method to analyze crystals in a deposit on a surface of a nuclear generating station heating surface, wherein the method extracts a sample of material from the surface of the nuclear generating station heating surface and also includes conducting at least one of a high resolution scanning electron microscope/energy dispersive X-ray spectrometry of the sample and a scanning transmission electron microscope/selected area electron diffraction/spot and elemental mapping analysis of the sample.
Abstract:
The invention relates to compositions and methods for coating a zirconium alloy cladding of a fuel element for a nuclear water reactor. The composition includes a master alloy including one or more alloying elements selected from chromium, silicon and aluminum, a chemical activator and an inert filler. The alloying element(s) is deposited or are co-deposited on the cladding using a pack cementation process. When the coated zirconium alloy cladding is exposed to and contacted with water in a nuclear reactor, a protective oxide layer can form on the coated surface of the cladding.
Abstract:
Раскрыты способ и система управления вводом газа в теплоноситель ядерной реакторной установки. Способ имеет следующие шаги: в объем над теплоносителем из газовой системы подают газ, предназначенный для ввода в теплоноситель; газ вводят в теплоноситель; из объема над теплоносителем выводят газ в газовую систему. Технический результат: предотвращение повторного использования загрязненного газа.
Abstract:
Изобретение относится к энергетическому машиностроению и может быть использовано в энергетических установках с жидкометаллическим теплоносителем. Массообменный аппарат содержит корпус и размещенную в нем проточную реакционную камеру, заполненную твердофазным гранулированным средством окисления, электрический нагреватель, расположенный в реакционной камере. Корпус аппарата оснащен хранилищем запасного твердофазного гранулированного средства окисления расположенным ниже реакционной камеры и выполненным в виде присоединенного к реакционной камере стакана с днищем. Технический результат состоит в увеличении длительности работы массообменного аппарата.
Abstract:
An insulated solution injector may include an outer tube and an inner tube arranged within the outer tube. The outer tube and the inner tube may define an annular space therebetween, and the inner tube may define a solution space within. The annular space may be configured so as to insulate the solution within the solution space. As a result, the solution may be kept to a temperature below its decomposition temperature prior to injection. Accordingly, the decomposition of the solution and the resulting deposition of its constituents within the solution space may be reduced or prevented, thereby decreasing or precluding the occurrence of a blockage.