Due to the Tohoku-Chihou-Taiheiyou-Oki Earthquake which occurred on March 
11, 2011, TEPCO's facilities including our nuclear power stations have 
been severely damaged. We deeply apologize for the anxiety and 
inconvenience caused.
With regard to the accident at Fukushima Daiichi Nuclear Power Station, on 
April 17, 2011, we have compiled the roadmap towards restoration from the 
accident and on July 19 we accomplished the Step1 target "Radiation dose 
is in steady decline". Then on December 16 we confirmed the accomplishment 
of the Step 2 target "Release of radioactive materials is under control 
and radiation doses are being significantly held down".
In addition, on December 21, 2011, we have compiled the "Mid-to-long-Term 
Roadmap toward the Decommissioning of Fukushima Daiichi Nuclear Power 
Units 1-4, TEPCO".
In addition to the maintenance of the plant's stable condition, we will 
implement Mid-to-Long Term countermeasures towards the decommissioning of 
Fukushima Daiichi Nuclear Power Units 1-4 to enable evacuees to return to 
their homes as soon as possible and reduce the anxiety of the people in 
Fukushima and the whole nation as soon as possible. 
 
Below is the status of TEPCO's major facilities. 

*The updates are underlined. 
 

[Nuclear Power Station]  
 
·Fukushima Daiichi Nuclear Power Station: Unit 1 to 3: shut down due to 
 the earthquake:
  (Units 1 to 4: shutdown due to the earthquake)

 -At 8:49 am on January 29, since a gradual decline was confirmed in the 
  amount of treatment at the second Cesium adsorption apparatus (sally), 
  we temporarily stopped this facility in order to conduct reverse wash of 
  the filter. At 12:06 pm, we restarted this apparatus. At 12:18 pm it  
  reached its regular flow rate (approx. 36.5m3/h). 
 -At around 9:50 am on January 29, one of our employees, during adjustment 
  works of the water flow to the feed water spray system, found a water 
  leak from near the flow rate detector of the emergency reactor injection 
  pump on the hill (C) which is now at standby. We shut down the valve at 
  the leakage point and at 9:55 am confirmed that the water leak has 
  stopped (amount of leakage under examination). The leakage point is on 
  the hill (at the front of the main office building) and there are traces 
  that show that a certain amount of water has flowed into the drain, and  
  we are examining whether this water has flowed into the ocean or not.  
  According to the sampling results we conducted at the lower side of the  
  gutter both Cs -134 and Cs-137 was below detection limit (detection  
  limit: Cs-134:2.4x10-2Bq/cm3, Cs-137:5.4x10-2Bq/cm3). The surface  
  radioactivity concentration near the leakage point is as the same level  
  as the atmosphere around (radioactivity concentration near the buffer  
  water tank upper side of the pump is below measurable limit in all three  
  major nuclides (sampled on 28 January 2012) : I-131: 1.3x10-2Bq/cm3,  
  Cs-134:4.3x10-2Bq/cm3, Cs-137:5.4x10-2Bq/cm3. We will continue to  
  assess and review the possibility of leakage through all beta nuclides  
  analysis of the sampling points, outlets of Unit 5/6 and the buffer tank  
  water. Water injection to the reactor is maintained by the ordinary 
  reactor injection pump on the hill (A) and (C). 
·Other leakage points confirmed by 3:00 pm is as follows: 
○Secondary water cooling unit of Unit 4 spent fuel pool (three points)
  (Filtrate water*: Approx. 40L)  
○"A" system minimum flow line flange, waste liquid supply pump, Water  
  desalinations (RO) 
  (Water after decontamination and before purification: approx. 10L (in  
  the barrage)) 
  [Surface radioactive density gamma ray: 0.6mSv/h, beta ray: 35mSv/h,  
  atmosphere radioactive density gamma ray: 0.11mSv/h, beta ray: 2mSv/h] 
○Flow meter of reactor water injection pump from Unit 3 condensate storage  
  tank to Unit 2 
  (RO water: Approx. 4L) 
  [atmosphere radioactive density as same as background level] 
○Flow meter of reactor water injection pump from Unit 3 condensate storage   
  tank to Unit 3 
  (RO water: Approx. 4L) 
  [atmosphere radioactive density as same as background level]  
○Flange of demineralizer resin transfer line of water desalinations  
  (evaporative concentration apparatus) 
  (RO water: Approx. 0.5L (in the barrage)) 
  [atmosphere radioactive density as same as background level] 
○Boiler "B" system, Water desalinations (evaporative concentration  
  apparatus) 
  (Filtrate water*: Approx. 25L (total of system B and C))  
○Boiler "C" system, Water desalinations (evaporative concentration  
  apparatus) 
  (Filtrate water:* Approx. 25L (total of system B and C))  
○Header of filtrate water supply line into fuel pool make up system 
  (Filtrate water:* Approx. 9L) 
○Flow meter of filtrate water backwash line of boiler water supply of  
  evaporative concentration apparatus 
  (Filtrate water:* Approx. 18L) 
○Flow meter of filtrate water of deionizer 
  (Filtrate water*: Approx. 1L) 
○Flange of cooling water line of Unit 6 water circulation pump 
  (Pure water (made from filtrate water): Approx. 7,000L) 
○Flow meter of waste water line of deionizer 
  (Pure water (made from filtrate water): Approx. 9L) 
○Filtrate water supply valve of Unit 3 spent fuel pool cooling system 
  (Filtrate water*: Approx. 50L) 
 *Filtrate water: water taken from the barrage 

·Fukushima Daini Nuclear Power Station:
  (Units 1 to 4: shutdown due to the earthquake)
 
·Kashiwazaki Kariwa Nuclear Power Station: Units 6: under normal operation
  (Units 1 to 5 and 7: outage due to regular inspections)
 

[Thermal Power Station] 
·Power supply has returned to normal and facilities damaged by the 
 earthquake are now being handled in a timely manner. 
 

[Hydro Power Station] 
·Power supply has returned to normal and facilities damaged by the 
 earthquake are now being handled in a timely manner. 
 

[Impacts on Transmission Facilities] 
·Power supply has returned to normal and facilities damaged by the 
 earthquake are now being handled in a timely manner. 
 

[Impacts on Power Supply and Demand Balance] 
This winter, there are some minus factors such as the regular inspection 
of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station*. On the other hand, 
there are several plus factors such as the recovery of the common thermal 
power stations which suffered the earthquake. As a result, we expect to 
secure 54.6 GW (at the end of January), 53.7 GW (at the end of February) 
supply power.  
Compared to the maximum demand in the last winter, which is 51.5 GW, we 
will have 2.2 - 3.1 GW generation reserve margin. 
 
We expect to maintain stable power supply this winter, however, as there 
remains possibilities of unplanned shutdowns at our power stations and 
growth in the demand according to the rapid change in the temperature, we 
would like to ask your reasonable effort to save electricity.  
  
We will continue to make our efforts to maintain stable operation and 
maintenance of the power facilities in order to "prevent in principle" the 
planned blackouts and secure power supply. 
 
* Correction of Description in [Impacts on Power Supply and Demand Balance]
We described,"there will be some minus factors such as the regular 
inspection of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station" in the 
previous press release. However, because Unit 5 of Kashiwazaki-Kariwa 
Nuclear Power Station has already conducted a regular inspection since 
January 25, we revise the previous sentence to "there are some minus 
factors such as the regular inspection of Unit 5 at Kashiwazaki-Kariwa 
Nuclear Power Station". We would like to apologize for the correction 
(February 8, 2012). 

 
Appendix: Past Progress (As of 6:00 pm, January 29, 2012) (PDF 589KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 

* Revised past progress