The Tokyo Electric Power Company, Inc.
                                 Kashiwazaki-Kariwa Nuclear Power Station

Kashiwazaki-Kariwa Nuclear Power Station Unit 7 automatically shut down 
when the earthquake occurred on July 16th. Beginning from July 18th, 
we have increased the frequency of measuring the release of radioactive 
iodine and particulate materials from the main exhaust stack of Unit 7 
from weekly to daily.

The measurements made on July 18th detected the release of iodine-131 
and iodine-133. However, for the period of July 19th to July 23rd, 
no radioactive material has been detected.

The radiation dose from the radioactive materials released from the main 
exhaust stack of Unit 7 is estimated to be about 2 x 10-7 millisieverts 
for radioactive iodine and about 7 x 10-10 millisieverts for particulate 
radioactive materials-equivalent to about two 10 millionth of the dose 
limit for the public, which is 1 millisievert, and is considerably lower 
than the annual radiation dose of 2.4 millisieverts from natural sources.

The measurements made on Unit 7 for the period of July 19th to July 23rd 
did not detect any release of radioactive materials because operation of 
the turbine gland steam ventilator, which directly caused the release of 
radioactive materials from the main exhaust stack, had been stopped on 
July 18th. It is estimated that Unit 7, currently shut down and is in 
a stable state, is no longer releasing any radioactive iodine. We are 
carefully controlling all ongoing work and ensuring the appropriate 
management of the nuclear power station.

[Results of Measurements]
 Release of radioactive iodine and particulate materials from the main 
 exhaust stack of Unit 7