Press Release
Submission of the "Application Documents for Approval to Amend the Implementation Plan for Fukushima Daiichi Nuclear Power Station Specified Nuclear Facility" Regarding the Handling of ALPS Treated Water

November 14, 2022

Tokyo Electric Power Company Holdings, Inc.

Considering the Japanese government's basic policy announced in April 2021, TEPCO had been reviewing the details of the design and operation of ALPS treated water dilution/discharge facility and related facilities. On December 21, 2021, TEPCO submitted the "Application Documents for Approval to Amend the Implementation Plan for Fukushima Daiichi Nuclear Power Station Specified Nuclear Facility" for the basic design of ALPS treated water dilution/discharge facility and related facilities to the Nuclear Regulation Authority (NRA), and on July 22, 2022, these application documents were approved by the NRA.
In order to make the description appropriate due to the addition of specifications for the main pipes related to ALPS treated water dilution/discharge facility in the application to amend for "Installation of ventilation equipment and other equipment on the large cover covering the Unit 1 reactor building", on October 17, 2022, we submitted to the NRA a partial amendment to the "Application for Approval of Changes to the Implementation Plan for Specific Nuclear Facilities at Fukushima Daiichi Nuclear Power Station". These application documents were approved by the NRA on October 27.

(Announced as of October 31, 2022)

Today, we submitted to the NRA the "Application Documents for Approval to Amend the Implementation Plan for Fukushima Daiichi Nuclear Power Station Specified Nuclear Facility" to reflect the organizational structure for operation and maintenance management of the ALPS treated water dilution/discharge facility, the nuclides to be measured and assessed to verify the water meets the discharge criteria before discharge into the sea, and the results of the Radiological Environmental Impact Assessment regarding the discharge of ALPS treated water into the sea (construction stage). We will respond sincerely to the reviews conducted by the Nuclear Regulatory Agency.

We will continue to thoroughly implement measures related to the handling of ALPS treated water based on the Japanese government's basic policy while continuing to carefully listen to the opinions from parties concerned so as to further ensure safety.

<Attachment>

• Attachment 1 : Application Documents for Approval to Amend the Implementation Plan for Fukushima Daiichi Nuclear Power Station Specified Nuclear Facility (22.0MB)
• Attachment 2 : Application for Approval to Amend the Implementation Plan Regarding the Handling of ALPS Treated Water [Overview](871KB)
• Attachment 3 : Radiological Environmental Impact Assessment Regarding the Discharge of ALPS Treated Water into the Sea (Construction stage) (Corrected version on December 9, 2022)(2.59MB)