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Press Release (Mar 13,2011)
Plant Status of Fukushima Daiichi Nuclear Power Station (as of 9pm March 13th)
 
All 6 units of Fukushima Daiichi Nuclear Power Station have been shut down. 
 
[There is no update from the previous press release.]
Unit 1(Shut down) 
- Reactor has been shut down. However, the unit is under inspection due 
  to the explosive sound and white smoke that was confirmed after the big
  quake occurred at 3:36PM. 
- We have been injecting sea water and boric acid which absorbs neutron 
  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. Current reactor water level is
  lower than normal level, but the water level is steady. After fully
  securing safety, measures to lowering the pressure of reactor 
  containment vessel has been taken, under the instruction of 
  the national government.
Unit 3(Shut down) 
- Reactor has been shut down. However, as High Pressure Core Injection 
  System has been automatically shut down and water injection to 
  the reactor was interrupted, following the instruction by 
  the government and with fully securing safety, steps to lowering 
  the pressure of reactor containment vessel has been taken. Spraying 
  in order to lower pressure level within the reactor containment vessel 
  has been cancelled.
- After that, safety relief valve has been opened manually, lowering 
  the pressure level of the reactor, which was immediately followed 
  by injection of boric acid water which absorbs neutron, into 
  the reactor pressure vessel.
Unit 4 (shut down 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 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.
- Presence of 2 TEPCO employees at the site are 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.
- We measured radioactive materials inside of the nuclear power station 
  area (outdoor) by monitoring car and confirmed that radioactive 
  materials level is higher than ordinary level. Also, the level 
  at monitoring post is higher than ordinary level. We will continue
  to monitor in detail the possibility of radioactive material being
  discharged from exhaust stack or discharge canal. The national 
  government has instructed evacuation for those local residents within
  20km radius of the periphery because it's possible that radioactive 
  materials are discharged. 
 
- We will continue to take all measures to restore the security of the 
  site and to monitor the environment of the site periphery. 
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