JAPAN ATOMIC INDUSTRIAL FORUM, INC.

for Japanese

ATOMS in JAPAN

16 June, 2015

Government Revises Roadmap for Medium-term and Long-term Decommissioning of Fukushima Daiichi

On June 12, the Japanese government revised its roadmap for decommissioning Fukushima Daiichi Units 1-4 over the medium and long term, after a meeting the inter-ministerial council for contaminated water issues and decommissioning issues a meeting held the same day.

TEPCO Pres. Hirose

This is the second time the roadmap has been revised since it was first issued in 2011, the previous revision having happened in June 2013.

The revised roadmap focuses on the following issues:

  • Placing greater emphasis on risk reduction.
  • Clarifying milestones toward goals.
  • Strengthening relationships of mutual trust with local communities through more thorough information disclosure.
  • Reducing workers’ exposure doses and strengthening work safety and sanitation management.
  • Strengthening the “control tower” function within the strategy for development of decommissioning technology.

The overall target remains unchanged of completing the treatment of the contaminated water accumulated in the reactor buildings by 2020.

But the newly revised roadmap also clarifies milestones to accomplish preventive and multilayered measures, involving the three principles of (a) removing the source of the contamination, (b) isolating groundwater from the contamination source, and (c) preventing leakage of the contaminated water.

In addition, the revised roadmap includes a new goal of cutting the amount of groundwater flowing into the buildings to less than 100 cubic meters per day by FY16, which starts next April.

Meanwhile, the schedule for removing fuel from spent fuel storage pools will be postponed due to the increased emphasis on safety measures, including preventing radioactive materials from scattering and reducing radiation doses of workers.

In particular, the schedule for fuel removal at Unit 1 was delayed from late FY17 to FY20, while that at Unit 2 was delayed from early FY20 to later the same fiscal year, and that at Unit 3 from early FY15 to FY17.

The removed fuel will be stored at the common spent fuel pool for a fixed period time, and its disposal and storage method will be decided by 2020 or so after evaluations are made of its long-term soundness and treatment methods.

No changes have been made to the scheduled beginning of fuel-debris removal in 2021. The revised roadmap clearly states that procedures for how to remove debris at each reactor will be determined in two years.

The Nuclear Damage Compensation and Decommissioning Facilitation Corporation (NDF) has recently formulated a technological strategy plan for decommissioning (see the article entitled “Three Methods Proposed for Removing Fuel Debris in Fukushima Daiichi Decommissioning“).

The revised road map states that intensive efforts will be made to understand the conditions in the reactor containment vessels, and that feasibility will be evaluated and verified.

After the revised roadmap was announced, President Naomi Hirose of the Tokyo Electric Power Co. (TEPCO) released a comment in response, saying, “Our work experience over the past four years has been duly reflected. We will steadily implement what has been decided so as to avoid any setbacks.”

Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

SNS facebooktwitter

NPPs Map

Video

Grossi on Fukushima: Marking a Decade Since the Accident

10 March, 2021
Grossi on Fukushima: Marking a Decade Since the Accident04:11

Recent News

21 October, 2021
Kishida Makes First Visit to Fukushima Since Becoming Prime Minister
15 October, 2021
LDP Adds SMR Development and Nuclear Fusion to NPP Restarts in Its Policy Manifesto
7 October, 2021
Kishida Administration Inaugurated, with New METI Minister Hagiuda Holding Press Conference on Taking Office
6 October, 2021
IAEA Holds 65th General Conference in Vienna, with Japanese Minister of State for Science and Technology Delivering Statement in the General Debate
30 September, 2021
JAEC Releases 2020 White Paper on Nuclear Energy
17 September, 2021
NRA Permits Shimane-2 under New Regulatory Standards
14 September, 2021
IAEA Deputy Director General Evrard Visits Japan in Advance of Safety Review of ALPS-treated Water
1 September, 2021
Evaluation Report Issued by IAEA’s Review Mission to Fukushima Daiichi: First Visit since 2018
24 August, 2021
METI and IAEA Agree on Further Review Missions to Fukushima Daiichi
4 August, 2021
JAEA Restarts High-Temperature Engineering Test Reactor “HTTR”
2 August, 2021
Information about Fukushima Daiichi NPS Water Treatment
28 July, 2021
METI’s Committee Shows Rough Draft of Next Strategic Energy Plan
2 July, 2021
Mihama-3 Restarted After Decade-long Hiatus: First Restart in Japan of a Reactor Operating Beyond 40 Years
28 June, 2021
Mihama-3 Restarts after Decade-long Hiatus
25 June, 2021
New Canada-Japan Partnership Supports Greater Collaboration to Meet Climate Change Objectives and Net-zero Goals
24 June, 2021
METI Issues New Green Growth Strategy Through Achieving Carbon Neutrality
16 June, 2021
ANRE Sticks to “S+3E”
16 June, 2021
Japanese Cabinet Approves Environmental White Paper 2021
16 June, 2021
LDP Parliamentary Association to Reconfirm Position on Utilization of Nuclear Power
16 June, 2021
Fukui Governor Concerned about Deletion of Reference to “Maximum Utilization” of Nuclear Power
▲TOP