All 6 units of Fukushima Daiichi Nuclear Power Station have been shut
down.
Unit 1(Shut down)
-Reactor has been shut down. However, the explosive sound and white
smoke were confirmed after the big quake occurred at 3:36PM Mar 12th.
It was assumed to be hydrogen explosion and currently under the
investigation.
-We have been injecting sea water into the reactor pressure vessel.
Unit 2(Shut down)
-Reactor has been shut down and Reactor Core Isolation Cooling System
has been injecting water to the reactor. However, reactor pressure has
increased because the system stopped, causing reactor water level to
drop. Following the instruction by the government and with fully
securing safety, measure to lower the pressure level within the reactor
containment vessel and injection of sea water were taken, reactor
pressure and water level resumed.
-We are continuing the injection of sea water into the reactor.
-At approximately 6:00am, an abnormal noise began emanating from nearby
Pressure Suppression Chamber and the pressure within this chamber
decreased.
-While we continue sea water injection operations, the temporary
transfer of TEPCO employees and workers from other companies not
directly involved in this work has begun.
Unit 3(Shut down)
-Reactor has been shut down. However, the explosive sound and white
smoke were confirmed at 11:01AM Mar 14th. It was assumed to be hydrogen
explosion and currently under the investigation.
-As fog like steam was confirmed from reactor building at 8:30AM on
March 16th, we transferred the workers to safe area. After that, we
decided to discharge water to the upper side of reactor building by
helicopters, but could not do that because there was a trouble with
implementation of work.
-We plan to discharge water in order to cool spent fuel pool after we
complete the preparations by confirming the process of discharging,
personnel, and a situation of the site.
-We continue monitoring as it was reported that the pressure of the
Suppression Chamber temporally increased at around 6:15AM on March 17th.
-We have been injecting sea water into the reactor pressure vessel.
Unit 4 (shut down due to regular inspection)
-Reactor has been shut down. However, we have confirmed the sustained
damage around the 5th floor rooftop area of the Nuclear Reactor
Building.
-Afterwards, we confirmed the outbreak of fire at the northwestern part
of Nuclear Reactor Building. We immediately reported this matter to the
fire department and the related authorities.
-However, at approximately 11:00am, when TEPCO employee arrived at the
seen to confirm, the fire had already died down. At 5:45AM on March
16th, we confirmed the outbreak of the fire again but could not confirm
it at 6:15AM. We will continue to monitor the situation carefully.
Unit 5 (outage due to regular inspection)
-Reactor has been shut down and sufficient level of reactor coolant to
ensure safety is maintained.
-Currently, we do not believe there is any reactor coolant leakage
inside the reactor containment vessel.
Unit 6 (outage due to regular inspection)
-Reactor has been shut down and sufficient level of reactor coolant to
ensure safety is maintained.
-Currently, we do not believe there is any reactor coolant leakage
inside the reactor containment vessel.
Casualty
-2 workers of cooperative firm were injured at the occurrence of the
earthquake, and were transported to the hospital.
-1 TEPCO employee who was not able to stand by his own with his hand
holding left chest was transported to the hospital by an ambulance.
-1 subcontract worker at important earthquake-proof building was
unconscious and transported to the hospital by an ambulance.
-The radiation exposure of 1 TEPCO employee, who was working inside the
reactor building, exceeded 100mSv and was transported to the hospital.
-2 TEPCO employees felt bad during their operation in the central control
rooms of Unit 1 and 2 while wearing full masks, and were transferred to
Fukushima Daini Power Station for consultation with a medical advisor.
-4 workers were injured and transported to the hospital after explosive
sound and white smoke were confirmed around the Unit 1.
-11 workers were injured and transported to Fukushima Daini Nuclear
Power Station after explosive sound and white smoke were confirmed
around the Unit 3.One of the injured workers got medical treatment on
March 16th, but the worker reported a flank pain. We required to the
offsite center that the worker should be transported to the hospital.
After that, the helicopter of JSDF arrived and transported the worker
to the FUKUSHIMA Medical University Hospital at 10:56AM
-Presence of 2 TEPCO employees at the site is not confirmed.
Others
-We are currently coordinating with the relevant authorities and
departments as to how to secure the cooling water to cool down the
water in the spent nuclear fuel pool of the plant.
-We measured radioactive materials inside of the nuclear power station
area (outdoor) by monitoring car and confirmed that radioactive
materials level is getting higher than ordinary level. As listed below,
we have determined that specific incidents stipulated in article 15,
clause 1(Abnormal increase in radiation dose measured at site boundary)
have occurred.
Determined at 4:17 pm Mar 12th (Around Monitoring Post 4 )
•Determined at 8:56 am Mar 13th (Around Monitoring Post 4 )
•Determined at 2:15 pm Mar 13th (Around Monitoring Post 4 )
•Determined at 3:50 am Mar 14th (Around Monitoring Post 6 )
•Determined at 4:15 am Mar 14th (Around Monitoring Post 2 )
•Determined at 9:27 am Mar 14th (Around Monitoring Post 3 )
•Determined at 9:37 pm Mar 14th (Around main entrance )
•Determined at 6:51 am Mar 15th (Around main entrance )
•Determined at 8:11 am Mar 15th (Around main entrance )
•Determined at 4:17 pm Mar 15th (Around main entrance )
•Determined at 11:05 pm Mar 15th (Around main entrance )
-We will continue to make announcements when it was determined that a
specific incident stipulated in article 15, clause 1 has occurred.
-The national government has instructed evacuation for those local
residents within 20km radius of the periphery and evacuation to inside
for those residents from 20km to 30km radius of the periphery, because
it's possible that radioactive materials are discharged.
-Today, at approximately 10am, we observed 400mSv/h at the inland side
of the Unit 3 reactor building and 100mSv/h at the inland side of the
Unit 4 reactor building.
-We will continue to take all measures to restore the security of the
site and to monitor the environment of the site periphery.
