*new items are underlined 

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 3:36 pm Mar 12th. It was
 assumed to be hydrogen explosion.
-At approximately 2:30 am on March 23rd, seawater was started to be
 injected to the nuclear reactor through the feed water system.
-We have been injecting sea water into the reactor pressure vessel. 

Unit 2(Shut down) 
-Reactor has been shut down and the level of reactor coolant had dropped
 and the reactor pressure had increased because the Reactor Core Isolation
 Cooling System stopped. Measures were taken to lower the pressure within
 the Reactor Containment Vessel and to inject sea water into the Reactor
 while carefully confirming safety. The level of reactor coolant and the
 pressure of the Reactor resumed. 
-At approximately 6:00 am on March 15th, an abnormal noise began emanating
 from nearby Pressure Suppression Chamber and the pressure within this
 chamber decreased. 
-At 6:20 pm on March 21st, white smoke was confirmed arising from the top
 of the reactor building. As of 7:11 am on March 22nd, smoke decreased to
 the level where we can hardly confirm
-We have been injecting sea water into the reactor pressure vessel.
 

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.
-At 8:30am on March 16th, fog like steam was confirmed arising from the
 reactor building.
-At approximately 6:15 am on March 17th the pressure of the Suppression
 Chamber has temporarily increased. We were preparing to implement a
 measurement to reduce the pressure of the reactor containment vessel
 (partial discharge of air containing radioactive material to outside) in
 order to fully secure safety. However, at present, it is not a situation
 to take a measure immediately to discharge air containing radioactive
 material to outside now. We will continue to monitor the status of the
 pressure of the reactor containment vessel.
-At approximately 4:00 pm, March 21st, light gray smoke was confirmed
 arising from the floor roof of the Unit 3 building. On March 22nd, the
 color of smoke changed to somewhat white and it is slowly dissipating.
-At approximately 10:45 pm on March 22nd, the light in the main control
 room was turned on.
-At around 4:20 pm on March 23rd, our staff confirmed light black smoke 
 belching from the Unit 3 building. 
-We have been injecting sea water into the reactor pressure vessel. 

Unit 4 (outage due to regular inspection) 
-Reactor has been shut down. However, at approximately 6 am on March 15th.
 We have confirmed the explosive sound and the sustained damage around the
 5th floor rooftop area of the Nuclear Reactor Building.
-On March 15th and 16th, we respectively confirmed the outbreak of fire at
 the 4th floor of the northwestern part of the Nuclear Reactor Building.
 We immediately reported this matter to the fire department and the
 related authorities. TEPCO employees confirmed that each fire had already
 died down by itself. 
-At this moment, we do not consider any reactor coolant leakage inside the
 reactor containment vessel happened. 

Unit 5 (outage due to regular inspection) 
-Reactor has been shut down and the sufficient level of reactor coolant to
 ensure safety is maintained.
-At 5 am, March 19th, we started the Residual Heat Removal System Pump (C)
 in order to cool the spent fuel pool.
-At this moment, we do not consider any reactor coolant leakage inside the
 reactor containment vessel happened.
-At 2:30 pm, March 20th, the reactor achieved reactor cold shutdown. At 
 around 5:24 pm on March 23rd, when we switched the temporary Residual 
 Heat Removal System Seawater Pump, it automatically stopped. We will 
 repair the pump and maintain the reactor water level and the temperature 
 in the reactor properly. 

Unit 6 (outage due to regular inspection) 
-Reactor has been shut down and the sufficient level of reactor coolant to
 ensure safety is maintained.
-We are working on receiving external power supply to Units 5 and 6. We
 completed the repair work on the emergency diesel generator (A).
-At 10:14 pm, March 19th, we started the Residual Heat Removal System Pump
 (B) of Unit 6 in order to cool the spent fuel pool.
-At this moment, we do not consider any reactor coolant leakage inside the
 reactor containment vessel happened.
-At 7:27 pm, March 20th, the reactor achieved reactor cold shutdown. 

Today's work for cooling the spent fuel pools 
-At approximately 10:00 am on March 23rd, we started spraying water to
 Unit 4 using the concrete pumping vehicle and completed at around 1:00
 pm. And at around 11:00 am, sea water injection to fuel spent pool of
 unit 3 was started by using Fuel Pool Cooling and Filtering(clean up)
 system (FPC) and finished at around 1:20 pm.
-We are considering further spraying at other units and others subject to
 the conditions of spent fuel pools. 

Casualty 
-2 workers of cooperative firm were injured at the occurrence of the
 earthquake, and were transported to the hospital on March 11th.
-4 workers were injured and transported to the hospital after explosive
 sound and white smoke were confirmed around the Unit 1on March 11th.
-Presence of 2 TEPCO employees at the site is not confirmed on March 11th.
-1 TEPCO employee who was not able to stand by his own holding left chest
 with his hand, was transported to the hospital by an ambulance on March
 12th.
-1 subcontract worker at the key earthquake-proof building was unconscious
 and transported to the hospital by an ambulance on March 12th.
-The radiation exposure of 1 TEPCO employee, who was working inside the
 reactor building, exceeded 100mSv and he was transported to the hospital
 on March 12th.
-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 Nuclear Power Station for consultation with a medical
 advisor on March 13th.
-11 workers were injured and transported to Fukushima Daini Nuclear Power
 Station etc. after explosive sound and white smoke were confirmed around
 the Unit 3. One of the workers was transported to the FUKUSHIMA Medical
 University Hospital on March 14th.
-At approximately 10 pm on March 22nd, 1 worker who had been working on
 setting up a temporary power panel in the common pool was injured and
 transported to Fukushima Daini Nuclear Power Station where the industrial
 doctor is.
-At approximately 1 am on March 23rd, 1 worker who had been working on
 transporting a temporary power panel in the common pool was injured and
 transported to Fukushima Daini Nuclear Power Station where the industrial
 doctor is. 

Others 
-We measured radioactive materials (iodine etc.) 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 of Act on Special Measures Concerning Nuclear
 Emergency Preparedness (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 )
 ·Determined at 8:58 am Mar 19th (Around MP5)
From now on, if the measured figure fluctuates and goes above and below
500 micro Sv/h, we deem that as the continuous same event and will not
regard that as a new specific incidents stipulated in article 15, clause
1 of the Act on Special Measures Concerning Nuclear Emergency Preparedness
(Abnormal increase in radiation dose measured at site boundary) has
occurred. In the interim, if we measure a manifestly abnormal figure and
it is evident that the event is not the continuous same event, we will
determine and notify.

-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.
-At approximately 10am on March 15th, 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 checked the status of spent fuel in the common pool, and confirmed
 that the water level secured. We are planning to conduct a detailed
 inspection. 
-We found no signs of abnormal situation for the casks by visual
 observation during the patrol activity. A detailed inspection is under
 preparation.
-At Units 5 and 6, in order to prevent hydrogen gas from accumulating
 within the buildings, we have made three holes on the roof of the reactor
 building for each unit.
-In total 12 fire engines are lent for the water spraying to the spent
 fuel pools and water injection to the nuclear reactors by various
 regional fire departments* as well as Tokyo Fire Department.
 *: Koriyama Fire Department, Iwaki Fire Brigade Headquarters, Fire
 Headquarters of Sukagawa District Wide Area Fire-fighting Association,
 Yonezawa City Fire Headquarters, Utsunomiya City Fire Headquarters, Fire
 Headquarters of Aizu-Wakamatsu wide area municipal association, Saitama
 City Fire Bureau, and Niigata City Fire Bureau.
-On March 21st and 22nd, we detected cobalt, iodine and cesium from the
 seawater around discharge canal of Units 1, 2, 3 and 4. 
-We detected iodine, cesium and tellurium in the air collected at the site
 of Fukushima Daiichi Nuclear Power Station on March 20th, 21st and 22nd.
-Until March 22nd, Units 1 through 6 were started to be energized from the
 external power source.
-We will continue to take all measures to ensure the safety and to
 continue monitoring the surrounding environment around the Power Station.