*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.
  Water is currently injected at approx. 4.0m3/h through reactor feed 
  water system piping arrangement.
- We commenced injection of nitrogen gas into Primary Containment Vessel 
  at 1:31am on 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 and are now injecting fresh water by a motor driven pump powered 
  by the off-site transmission line. From 2:25pm on July 17, the motor 
  driven pump of Unit 2 is injecting the freshwater to the Unit 1 and 2 
  reactors.
  Water is currently injected at approx. 4.1m3/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. 9.1 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 2:45pm on July 15, we started the operation of the original Residual 
  Heat Removal System Pump (B).
- 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. 

Injury accident 
- Around 10:06am on July 18, a worker of the partner company fell from the 
  distribution pole during the connection work of the optical cable near 
  the observatory entrance* of the station. He was transported to the 
  Iwaki Kyouritsu Hospital by the helicopter emergency medical service 
  (called "Doctor Heli").
  *: Modification on the place where the accident happened 

Others 
- 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 10:50 am on July 16, we started transfer of the accumulated water 
  from the Turbine Building of Unit 3 to the Process Main Building of the 
  Centralized Radiation Waste Treatment Facility.
- At 10:56 am on July 16, we started transfer of the accumulated water 
  from the Turbine Building of Unit 2 to the Process Main Building of the 
  Centralized Radiation Waste Treatment Facility.
- From 8:30am on July 18, we started an installation work of a temporary 
  roof for the Unit 3 turbine building in order to cover the roof's 
  opening as a measure for rainwater.
- At 11:00 am on July 19, we stopped the operation of the cesium 
  adsorption system at accumulated water treatment facility in order to 
  replace the cesium adsorption towers. 
- We will continue to take all measures to ensure the safety and to 
  continue monitoring the surrounding environment around the power station.