In accordance with the direction received from NISA on April 25th, 2011, with regards to the 
"Collection of Reports pursuant to the Provisions of Article 67, Paragraph 1 of the Act on the 
Regulation of Nuclear Source Materials, Nuclear Fuel Materials and Reactors", we have 
collected and summarized as much plant parameters at the time of occurrence of 
earthquake as possible and reported to NISA on May 16, 2011. 
                                                      (Previously announced on May 16, 2011) 
 
Thereafter, as it has turned out that seawater injection had been continued on Unit 1 on 
March 12 and some errors were found in the report, we have revised the report and 
submitted to NISA today as attached. 
                                                                                         END 
 
○Attachment 
·Correction of operation result in the report of "Plant data of Fukushima Daiichi Nuclear Power Station 
  at the time of Tohoku-Chihou-Taiheiyou-Oki Earthquake"(PDF 358KB) 
 
 
*Directive 
 
                                                                 04.24.2011 Nuclear Number 1 
 
                                                                              April 25, 2011 
 
Regarding Collection of Reports pursuant to the Provisions of Article 67, Paragraph 1 of the 
Act on the Regulation of Nuclear Source Materials, Nuclear Fuel Materials and Reactors 
 
   Regarding the current accident at Fukushima Dai-ichi Nuclear Power Station 
(NPS), based on the fact that your company has put together the “roadmap towards settling 
the situation,” the Ministry shall order your company to report as immediately as possible the 
following items regarding Fukushima Dai-ichi NPS pursuant to the provisions of Article 67, 
paragraph 1 of the Act on the Regulation of Nuclear Source Materials, Nuclear Fuel 
Materials and Reactors (Act No. 166 of 1957) for the purpose of implementing adequate 
emergency measures going forward. 
 
   Furthermore, workers must collect information without being exposed to radiation 
beyond the necessary level. In addition, in the event that speedy reporting is deemed 
difficult, for example in cases when there are difficulties in recovering reportable information 
that exist in areas with high-level concentration of atmospheric radiation, your company 
shall verify the state of recordkeeping, expected timing for reporting, and other situations, 
and report the results immediately. 
 
   If there are grievances regarding this action, pursuant to the provisions of Article 6 
of the Administrative Appeal Act (Act No. 160 of 1962), an administrative appeal may be 
made, in writing, to the Minister of 3 Economy, Trade and Industry within 60 days from the 
date one day after the day on which your company became aware of the fact that this 
disposition was made. However, no administrative appeals may be made when a period of 
one year has elapsed from the date one day after the date of this disposition, even if it is 
within 60 days from the date one day after the day on which your company became aware of 
the fact that this disposition was made. 
 
   Following the decision regarding the aforementioned objection, an action for the 
revocation of this disposition may be filed against the State (represented by the Minister of 
Justice) as defendant, within 6 months from the date one day after the day on which your 
company became aware of the fact that a decision was made in response to the 
aforementioned administrative appeal, pursuant to the provisions of Administrative Case 
Litigation Act (Act No. 139 of 1962). However, no action for the revocation of the disposition 
may be filed when a period of one year has elapsed from the date one day after the day on 
which the decision on the administrative appeal was made, even if it is within six months 
from the date one day after the day on which your company became aware of the fact that 
the decision on the administrative appeal was made. 
 
   Furthermore, an action for the revocation of the original administrative disposition 
may be filed without obtaining a decision on an administrative appeal, if the case falls under 
any of the following 1) to 3): 1) where no decision is made even after a period of three 
months has elapsed from the date one day after the day on which an administrative appeal 
was made; 2) where there is an urgent necessity in order to avoid any considerable damage 
that would be caused by the original administrative disposition, the execution of the original 
administrative disposition or the continuation of any subsequent procedure; 3) where there 
are other justifiable grounds not to obtain a decision on an administrative appeal. 
 
                                   Required Items 
 
● Operation records prescribed in Article 7, paragraph 1 of the Rules for Commercial 
  Power Reactors concerning the Installation, Operation, etc. 4 (Ordinance of the Ministry 
  of International Trade and Industry No. 77 of 1978) regarding the current accident 
  (including records immediately following the occurrence of the 2011 Tohoku District - off 
  the Pacific Ocean Earthquake), as well as the accident records of nuclear reactor 
  facilities and others, as listed below: 
 
    ·Water level of the reactor pressure vessel 
    ·Pressure of the reactor pressure vessel 
    ·Temperature of the reactor pressure vessel 
    ·Pressure of the dry well of the primary containment vessel 
    ·Pressure of the suppression pool of the primary containment vessel 
    ·Water level of the suppression pool of the primary containment vessel 
    ·Temperature of the suppression pool of the primary containment vessel 
    ·Temperature of the primary containment vessel 
    ·Concentration of atmosphere of the primary containment vessel 
    ·Temperature of the spent fuel pool 
    ·Flow rate of the emergency core cooling system 
    ·Concentration of radioactive materials in the radioactive waste ventilation port or ventilation monitoring equipment 
    ·The details of the alarm sent from the alarm device 
    ·Operation track record of the isolation condenser system 
    ·Operation track record of the reactor isolation cooling system 
    ·Operation track record of the high-pressure core water injection system 
    ·Track record of opening and closure of the relief safety valve 
    ·Track record of opening and closure of the primary containment vessel vent 
    ·Track record of power supply as well as power recovery 
    ·Track record of usage of fire pumps, and alternative water injection such as sea water injection 
    ·Treatment track record of stagnant water in the turbine building(s), outside trench(es) as well as outside duct(s)