ICAPP2017 in 福井・京都

Location: Ohi-cho, Ohi-gun, Fukui

All 4 units are Pressurized Water Reactors.

Units 1&2 started commercial operation in 1979. They have four reactor cooling loops with a gross capacity of 1175MWe. KANSAI introduced the Containment Vessel with Ice Condenser to these two reactors.

Units 3&4 started commercial operation in 1991 and 1993, respectively. They have four reactor cooling loops with a gross capacity of 1180MWe. KANSAI introduced the Prestressed Concrete Containment Vessel to these two reactors.

KANSAI has taken various enhanced safety measures taking account of the lessons learned from the accident at TEPCO's Fukushima Daiichi Nuclear Power Station.
Tour participants will see the following facilities in addition to the MCR, Turbine Building, Spent Fuel Pit from the Transparent Observation Facility.

• Enhanced power supply (large capacity high voltage emergency mobile generators and appropriation power cable)
• Enhanced cooling water supply for ultimate heat sink (Large capacity pumps and fire engines)

Location: Myojin-cho, Tsuruga-shi, Fukui

Unit_1 is a Boiling Water Reactor as the first commercial Light Water Reactor in Japan, which started operation in 1970 and its commercial operation was terminated in 2015.

Unit_2 is a Pressurized Water Reactor, which started commercial operation in 1987.
It has four reactor cooling loops and its gross capacity is 1160MWe. JAPC introduced the first Prestressed Concrete Containment Vessel to Unit_2 in Japan.

JAPC has taken various enhanced safety measures taking account of the lessons learned from the accident at TEPCO's Fukushima Daiichi Nuclear Power Station.
Tour participants will see the following facilities.

• Flooding countermeasures for the building
• Enhanced power supply (large-capacity, high-voltage, emergency, mobile generators and appropriation power cables)
• Enhanced cooling water supply for the ultimate heat sink (Large-capacity pumps and fire engines)

Location: Shiraki, Tsuruga-shi, Fukui

Prototype Monju is a 280MWe, loop-type, sodium-cooled fast breeder reactor (FBR) using plutonium-uranium mixed oxide fuel. Monju achieved its initial criticality in April 1994, and connected to the grid in 1995, however, a sodium leak accident occurred due to the breakage of the sodium temperature sensor in the secondary cooling system. Monju resumed System Start-up Tests (SSTs) in 2010 after 14 years and five months of shutdown since the sodium leak accident. Currently, the reactor is shut down due to the accident of Fukushima Daiichi Nuclear Power Plants.

Monju is currently making efforts to deal with safety assessments and measures based on the lessons learned from the accident of Fukushima Daiichi Nuclear Power Plants. The tour includes the following facilities' visit:.

• Information building: Learning the whole structure, features of each equipment and how Monju works using the scale model.
• Sodium Handling Training Facility: Learning the characteristics of sodium by experiencing the cutting of metallic sodium and sodium combustion experiments.
• Observatory: Providing a view of the entire appearance of Monju.
• Main Control Room: Controlling and monitoring Monju.
• Turbine building: Turbine generator to produce 280MWe. As sodium-cooled reactors can generate high-temperature, high-pressure steam, a system of thermal power generation is used.

Location: Myojin-cho, Tsuruga-shi, Fukui

Fugen, which is a heavy-water-moderated-boiling light-water-cooled pressure tube reactor, was in operation from March 1979 to March 2003. After the decommissioning preparation stage, Fugen's decommissioning program was approved on February 2008 and reorganized as Fugen Decommissioning Engineering center. It launched decommissioning work ahead of any other large-scale water reactor in Japan.
Now, the dismantling work of the turbine system is in progress, and the dismantling technology for the reactor core, which is laser cutting and plasma cutting, etc., is being studied.
You can see the following facilities on the technical tour.