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Hitachi

Hitachi-GE Nuclear Energy，Ltd。

Fuel Cycle

Fuel Cycle

We must establish methods for efficient utilization of Uranium resources to supply reliable and constant nuclear power.Appropriate technologies might include fast reactor and nuclear fuel cycle.We have been developing such technologies。

快速反应

We engaged in the design and construction of Experimental Fast Reactor Joyo and Prototype Fast Breeder Reactor Monju。
As a major equipment manufacturer，we will continue to contribute to progress and the practical application of fast breeder reactors。

Experimental Fast Reactor Joyo

Prototype Fast Breeder ReactorMonjuJapan Atomic Energy Agency（JAEA）

Deliver record on main products forMonju

主循环pump
循环装置，循环装置，循环装置
内部供暖系统
large-sized heat exchanger that transmits heat generated from the reactor through the primary sodium coolant to the secondary sodium coolant
过热器
预应器through primary and secondary sodium cooling systems and transmits it to the turbine system

Rokkasho Reprocessing Plant

Source:the Japan Nuclear Fuel Limited（JNFL）website

Source:the Japan Nuclear Fuel Limited（JNFL）website

The Rokkasho Reprocessing Plant is Japan’s first commercial nuclear fuel cycle facilities constructed by Japan Nuclear Fuel Limited（JNFL）。As it approaches the beginning of its operations，we participate in EPC to conform it to the new regulatory requirements.We are thus working to establish a safer nuclear fuel cycle and the stable operation of nuclear plants。

外部处理板，外部处理板

Excerpt from the website of Japan Nuclear Fuel Limited（JNFL）

Spent fuel receiving and storage building:Cools down and temporarily stores fuel assemblies that have been brought to the reprocessing plant until their radioactivity has decreased sufficiently。

横向制动

Cuts cooled fuel assemblies into small pieces with a shearing machine and dissolves themina dissolver containing nitric acid.Undissolved residue（metal chips such as cladding tubes）is removed from this nitric acid solution containing dissolved fuel meats using a clarifier。

分批装料

Separates the dissolver solution generated in the previous process into uranium stream，plutonium stream，and fission products’stream。

Purification building

Removes the small amount of residual fission products from the uranium and plutonium solutions for purification。

阻尼building

Removes nitric acid from the purified uranium solution and the mixed uranium/plutonium solution to produce uranium oxide powder and uranium/plutonium mixed oxide powder。

Our products are delivered mainly for the spent fuel receiving and storage building，the separation building，the purification building，the low active liquid waste treatment building，and the control building。

回厂生产板，回厂生产板

Spent fuel receiving and storage building

We delivered the following facilities and equipment to the spent fuel receiving and storage building。

Source:the Japan Nuclear Fuel Limited（JNFL）website

  • Spent fuel storage pools
  • 全handling machines
  • BWR和PWR
  • 排水管道
  • First channel box cutter
  • 控制室，控制室
  • 建筑通风系统
  • Electrical equipment etc。

横向制动

We delivered the following equipment to the head end building，where cooled spent fuel assemblies are sheared and dissolved。
Dissolution off-gas treatment facility removes volatile radionuclides（iodine）from dissolution off-gases by absorption。

六meters

  • Dissolution off-gas treatment facility
    • Iodine removal columns
    • 高效果粒子过滤器
    • Iodine filters
    • Exhausters
    • 过滤器插孔
    • Filter trolley etc。
  • 在传输中过滤
  • Iodine adsorbent

分批装料

本发明提供一种用于诊断诊断的诊断方法，and then uranium/plutonium are further separated into each stream in the distribution facility。
We delivered the following facilities and equipment to this building。

High Active Liquid Waste concentrator:A principal device in the separation building，concentrating and reducing volume of the high active effluent that contains almost all fission products in nuclear spent fuels

  • HALWC:High Active Liquid Waste Concentration facilities（Concentrators and feed vessels）
  • HTAR:High Tritium zone Acid Recovery系统
  • Vessel off-gas treatment System
  • HVAC系统
  • 电气设备
  • 重新分配（annular vessels）
  • In-Service检验（ISI）system for HALWC concentrator and HTAR evaporator and fractionator（instruments for measuring wall thickness of heat transfer tubes）etc。

Purification building

The refining building，where refining is carried out，removes the small amount of fission product contained in the uranium solution and plutonium solution more finely to improve purities。
We delivered the following equipment to this building。

Acid recovery evatorator（gas/liquid separator part）：A principal从nitric effluent generated after removing uranium，plutonium and other substances到nuclear spent fuels

  • LTAR:Low Tritium zone Acid Recovery System（thermosiphon type）和acid Recovery fractionator）

控制，控制

Each process in the reprocessing plant is centrally operated and monitored from a control room in the control building。
We delivered a distributed control system based on highly reliable，operable and maintainable technologies that have been well cultivated through experience with light-water reactors。

中央控制板，中央控制板（Source:the Japan Nuclear Fuel Limited（JNFL））

生产资料来源

下一步处理技术

For stably supplying electric power generated from nuclear energy，it is necessary to establish technologies for effectively using uranium resources.Fast reactors for effectively using uranium and nuclear fuel cycle technology fall under the technologies that we are working to develop。

浮子定位装置

We are moving forward with the development of the FLUOREX method*1 for reprocessing using the fluoride volatility method as anext-generation reprocessing technology.It takes advantage of differences in the vapor pressure of fluorides to recover uranium and plutonium with high efficiency and purity.It fes and hights economicefficiency。

*1
FLUOREX refers to Hybrid Process of Fluoride Volatility and Solvent Extraction。

钢锭与钢锭之间的距离

We are working to develop technology to separate nuclear fuel substances and radioactive waste using the fluorination process based on the fluoride volatility method developed asanext-generation processing technology.It is aimed at attaining rational management of fuel debris generated from the Fukushima Daiiiiiiiiiiwa and Stationgenerated from fuel debris retrieval。

Spent Fuel Interim Store Facility

“Transportation”of spent fuel from the nuclear power plant to medium-term storage，“storage”at the medium-term storage facility，and“re-transportation”from the medium-term storage facility to the reprocessing facility.We have developed Transport and Storage Dual Purpose Metal Cask product for these three functions that combines long-term reliability with good economics。

从功率补偿网

中间存储法“来自可回收的Fuel Store Company web site”

In the early stage of the development process，we implemented analyses，studies and a variety of tests on their safety and durability at the time of transport and confirmed that they met the functional requirements。

Transport and Storage Dual Purpose Metal Cask