*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 8:55 am on July 15, we confirmed that the amount of water injected 
 into the reactor decreased, we adjusted the water injection at 3.5 ㎥/h. 
 Water is currently injected at approx. 3.9㎥/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.
-At 8:01 pm on July 14, injection of nitrogen gas into the Primary
 Containment Vessel started. 

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.
-From 3:15 pm on July 10 to 11:11 am on July 15, we transferred 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. After 
 changing the hose, we started water injection at 1:05 pm on July 15. 
-From 10:00 am to 5:00 pm on July 14, we transferred low radioactive
 accumulate water in the outside temporary tanks to Mega Float.
-From 10:09 am on July 13 to 11:02 am on July 15, we transferred 
 accumulated water from the turbine building of Unit 2 to Centralized
 Radiation Waste Treatment Facility Process Main Building.
-At 5:14 am on July 15, we stopped the water treatment facility to
 investigate the cause of reduction from rated water flow. And then we 
 started the water treatment facility at 2:21 pm. 
-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, at 6:15 pm on July 14, we replaced with alternative
 portable monitoring post and was restored. We also confirmed monitoring
 data was at the same level as before the equipment failure.
-We will continue to take all measures to ensure the safety and to
 continue monitoring the surrounding environment around the power station.