Communiqué de presse de TEPCO

Article publié le 13 mars 2011

12h - Dans un communiqué de presse, Tokyo Electric Power (Tepco), la compagnie nippone qui exploite la centrale de Fukushima, déclare "Actuellement, nous ne croyons pas a une fuite du liquide de refroidissement du réacteur à l’intérieur de l’enceinte de confinement".

Press Release (Mar 13,2011)
Plant Status of Fukushima Daiichi Nuclear Power Station (as of 9am March 13th)

All 6 units of Fukushima Daiichi Nuclear Power Station have been shut down.

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 core.

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, we are preparing to implement a measure to reduce the pressure of the reactor containment vessels under the instruction of the national government.

Unit 3(Shut down)
 Reactor has been shut down. However, High Pressure Core Injection System has been automatically shut down and water injection to the reactor is currently interrupted. We are examining alternative way to inject water. Also, 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.
 Currently, we do not believe there is any reactor coolant leakage inside the reactor containment 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.
 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 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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