Events


Events 1 - 10 of 35 Items per page:
Austria, 14 Mar 2015, INES: 1

Found category 4 source, shutter of the source container partly open

On 14th March 2015 Italian border control detected increased radiation levels at an Austrian railcar at the Austrian border station. The railcar transported scrap metal. Austrian radiation experts found a Cs-137 category 4 source with 2.5 GBq activity. The shutter of the source container was partly...
Reported by Federal Ministry of Agriculture, Forestry, Environment and Water Management of Austria on 24 Apr 2015. Last update on 24 Apr 2015


Japan, 22 Feb 2015, INES: n/a

Possible Flow of Contaminated Water to the Outside of the Controlled Area

Monitoring instruments (Lines A and B) at the side gutter drainage sounded a “High” alarm at 10:00, followed by an ‘Extremely High’ alarm at 10:10 on 22 February, 2015. Peak values were 5.63 kBq/L at 10:30 for Line A, and 7.23 kBq/L at 10:40 for Line B. The “High” alarm was set at 1.5 kBq/L, and...
Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 16 Apr 2015


Japan, 17 Dec 2014, INES: n/a

Leakage of Water Treated by the Multi-Nuclide Removal Facility (ALPS)

On 17 December 2014, TEPCO found that treated water being transferred to the J6 Tank Area was leaking from an open end of a branch pipe connected to the main pipe. While having an open end, the valve on the branch pipe was open. Closing the valve on the branch pipe stopped the leakage. The...
Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 16 Apr 2015


Japan, 17 Sep 2014, INES: n/a

Discovery of a Crack in a Connection Valve between Tanks for Concentrated Water Treated by Reverse Osmosis

On 4 September, 2014, TEPCO found that the concentrated water* treated by Reverse Osmosis (RO) was leaking from a connection valve between A5 tank and A6 tank in the G4 South Tank Area. The leaked water was remaining within the dike surrounding the area. The radioactivities of the leaked water...
Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 16 Apr 2015


Japan, 02 Jun 2014, INES: n/a

Leakage of Contaminated Water from Two Notch Tanks

On 2 June, 2014, NRA’s resident inspector found that contaminated water was leaking from the bolt portion of the two tanks in 4,000 tons notch tank group in the contaminated water tank area. The water leakage was stopped by means of lowering the water level of the leaking tank by transferring the...
Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 16 Apr 2015


Japan, 13 Apr 2014, INES: n/a

Inappropriate Transfer of Contaminated Water

The Central Waste Building at Fukushima Daiichi NPS has been currently used as a storage facility for contaminated water from the Nuclear Reactor Buildings Unit 1 to 4. On 11 April, 2014, TEPCO found that the level of contaminated water in the Central Waste Building unnaturally fell down although...
Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 16 Apr 2015


Japan, 20 Feb 2014, INES: n/a

Leakage of Contaminated Water from the Upper Part of Tank C-1 in H-6 Tank Area

At 23:25 (Japan time) on 19 February, 2014, TEPCO found that water was leaking from the upper part of Tank C-1 in H-6 Tank Area, which has stored the water that was condensed by RO (reverse osmosis desalination facility) after the treatment by SARRY (cesium removal facility), to the dike...
Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 17 Apr 2015


Japan, 06 Feb 2014, INES: n/a

Leakage of Contaminated Water from a Flange of Water Pressure Measuring instrument

On 6 February,2014, TEPCO found that the water treated by Simplified Active Water Retrieve and Recovery System (SARRY, cesium removal facility) and Reverse Osmosis Desalination Facility (RO) was leaking from the flange of water pressure measuring instrument equipped to the water pipe in which the...
Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 16 Apr 2015


Japan, 09 Oct 2013, INES: n/a

Leakage of Contaminated Water from a Desalination System

Approximately 11 m3 amount of water leakage occurred from a pipe joint of desalination system (reverse osmosis membrane, RO-3) inside the temporary warehouse on 9 October, 2013. The water has retained in the dike installed in the warehouse. The radioactivity concentration of the leakage water...
Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 16 Apr 2015


Japan, 02 Oct 2013, INES: n/a

Leakage of Contaminated Water from the Top Plate of a Tank at B Area (South)

On 2 October, 2013, TEPCO found a water dropping from around the top plate of B area (south) tank (No.5 tank at Group A in B area), in where treated water from the desalination apparatus is stored, at Fukushima Daiichi NPS. The leaked water was not only dropping inside the dike, but also dropping...
Reported by Nuclear Regulation Authority of Japan on 16 Apr 2015. Last update on 17 Apr 2015


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