*Updates from previous press release are underlined. 

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

Unit 1 (Shut down) 
-Explosive sound and white smoke were confirmed after the big quake 
 occurred at 3:36 pm on March 12. It was assumed to be hydrogen explosion.
-At approximately 2:30 am on March 23, seawater injection to the reactor 
 through the reactor feed water system was initiated.
-From 3:37 pm on March 25, we started injecting freshwater by a motor 
 driven pump which is now powered by the off-site transmission line. 
-At 5:30 am on July 14, we confirmed that the amount of water injected 
 into the reactor decreased, we adjusted the water injection at 3.5 m3/h 
 through reactor feed water system piping arrangement. 
 Water is currently 
 injected at approx. 3.5m3/h through reactor feed water system piping 
 arrangement.
-We commenced injection of nitrogen gas into Primary Containment Vessel 
 at 1:31am April 7. 

Unit 2 (Shut down) 
-At approximately 6:00 am on March 15, an abnormal noise began emanating 
 from nearby Pressure Suppression Chamber and the pressure within the 
 chamber decreased. 
-From 10:10 am on March 26, we started injecting freshwater to the reactor. 
 At 6:27 pm on June 23, we changed the water injection line so that we can 
 inject water to Unit 1 and 2 by the motor driven pump for Unit 1 and 
 stopped the motor driven pump for Unit 2. 
 Water is currently injected at approx. 3.5m3/h through reactor feed water 
 system piping arrangement. 
-At 8:06 pm on June 28, we started injecting nitrogen gas into the Primary 
 Containment Vessel. 

Unit 3 (Shut down) 
-Explosive sound and white smoke were confirmed at approximately 11:01am 
 on March 14. It was assumed to be hydrogen explosion.
-From 6:02 pm on March 25, we started injecting fresh water to the reactor 
 and are now injecting fresh water by a motor driven pump powered by the 
 off-site transmission line.
 Water is currently injected at approx. 9 m3/h through reactor feed water 
 system piping arrangement. 

Unit 4 (Outage due to regular inspection) 
-At approximately 6:00 am on March 15, we confirmed the explosive sound 
 and the sustained damage around the 5th floor rooftop area of Reactor 
 Building.
-At this moment, we do not consider any reactor coolant leakage inside the 
 primary containment vessel has occurred. 

Unit 5 (Outage due to regular inspection) 
-Sufficient level of reactor coolant to ensure safety is maintained.
-At 5:00 am on March 19, we started the Residual Heat Removal System Pump 
 (C) in order to cool the spent fuel pool.
-At 2:30 pm on March 20, the reactor achieved cold shutdown.
-At this moment, we do not consider any reactor coolant leakage inside the 
 primary containment vessel has occurred. 

Unit 6 (Outage due to regular inspection) 
-Sufficient level of reactor coolant to ensure safety is maintained.
-At 10:14 pm on March 19, we started the Residual Heat Removal System Pump 
 (B) of Unit 6 in order to cool the spent fuel pool.
-At 7:27 pm on March 20, the reactor achieved cold shutdown. 
-At this moment, we do not consider any reactor coolant leakage inside the 
 primary containment vessel has occurred. 

Operation for cooling the spent fuel pools 
-At 5:21 pm on May 31, we started cyclic cooling of the spent fuel pool in 
 Unit 2 using alternative cooling system for fuel pool cooling and 
 filtering system. 
-At 7:47 pm on June 30, we started cyclic cooling of the spent fuel pool 
 in Unit 3 using alternative cooling system for fuel pool cooling and 
 filtering system.
-We will continuously conduct further water spray depending on the 
 conditions of spent fuel pools, if needed. 

Others 
-At 1:30 pm on April 26, we started spraying the dust inhibitor inside the 
 site. 
-At 11:00 am on May 10, we started transferring accumulated water from the 
 underground level of reactor building to the radiation waste treatment 
 facility of Unit 6.
-At approximately 10:00 am on June 13, we started the operation of the 
 circulating seawater purification facility installed at the screen area 
 of Unit 2 and 3.
-From 8:00 pm on June17, we started operation of water treatment of 
 accumulated water at accumulated water treatment facility. 
-At 6:00 pm on July 2, we started the circulating injection cooling to 
 inject the water, which was treated by the accumulated water treatment 
 system, to the reactors through the buffer tank.
-At 3:15 pm on July 10, we started transferring the accumulated water 
 from the turbine building of Unit 3 to Centralized Radiation Waste 
 Treatment Facility Process Main Building.
-At 11:22 on July 12, in order to reduce radiation level on the 5th 
 floor of the reactor building of Unit 4, we started fresh water injection 
 to the reactor well and the pool to put equipment temporarily. However we 
 found water leakage from injection water line and stopped the injection on
 12:03 on the same day. As a result of survey, we found water leakage from 
 a connection part with water hose. Today, after changing the hose, we 
 started water injection at 11:50 am, but we found water leakage from 
 injection water line and stopped water injection at 12:45 am.
-From 10:00 am to 5:00 pm on July 13, we transferred low radioactive 
 accumulate water in the outside temporary tanks to the Mega Float. At 
 10:00 am on July 14, we started transferring low radioactive accumulate 
 water in the outside temporary tanks to Mega Float. 
-At 10:09 am on July 13, we started transferring accumulated water from the
 turbine building of Unit 2 to Centralized Radiation Waste Treatment 
 Facility Process Main Building.
-At 11:00 am on July 13, we stopped cesium adsorption instruments of the 
 accumulated water treatment facility for replacement of cesium adsorption 
 tower. And then we started system flushing, but at 1:34 pm on July 13, we 
 stopped flushing because we found leakage near connection part of the 
 chemical injection line of coagulation settling device of the facility. 
 After this, we will repair the leaked part. Meanwhile, we have continued 
 water injection to the reactor.
-At approximately 1 pm on July 13, we found that the portable monitoring 
 post measuring dose rate at the main gate indicates zero. We checked the 
 equipment at the site and found no malfunction. Then we restarted the 
 equipment at the main anti-earthquake building and it indicates normal 
 value at approximately 2:55 pm. However, at around 10:00 pm on July 13, we 
 found that the portable monitoring post measuring dose rate indicates 
 zero, again. Then, the equipment did not work although we restarted the 
 equipment again. Therefore, we will repair or replace the instrument. 
-We will continue to take all measures to ensure the safety and to continue
 monitoring the surrounding environment around the power station.