decommissioning of the fukushima daiichi site · decommissioning of the fukushima daiichi site:...

© 2017 Organisation for Economic Co-operation and Development

Decommissioning of the Fukushima Daiichi Site:

Status and Continuing WorkWilliam D. Magwood, IV

Director-GeneralNuclear Energy Agency

Fukushima Decontamination and Decommissioning 61st IAEA General Conference

18 September 2017

© 2017 Organisation for Economic Co-operation and Development© 2017 Organisation for Economic Co-operation and Development 2

The NEA: 33 Countries Seeking Excellence in Nuclear Safety, Technology, and Policy

• 33 member countries + key partners (e.g., China)

• 7 standing committees and 86 working parties and expert groups

• The NEA Data Bank -providing nuclear data, code, and verification services

• 23 international joint projects (e.g., the Halden Reactor Project in Norway)


Six Years Later:Much Progress; Much to Do


Six Years Later:Much Progress; Much to Do

Significant progress has been achieved. Careful monitoring and efforts to reduce on-site risks must continue.

Essential to implement approaches to characterize radioactive wastes associated with the decommissioning process and to put plans in place for their disposition.

Strategies must be developed to prepare for the highly radioactive wastes related to the fuel debris retrieval process.

Application of new technologies to reduce worker exposure to radiation should be considered.


NEA’s Fukushima-Related Activities:Expert Group on Fukushima Waste Management & Decommissioning

In 2016, the group evaluated the management ofpost-accident waste and provided a strategicapproach to the Japanese government for effectiveradiological characterization of radioactive waste(RW).

In 2017, NDF requested the NEA to further assist indeveloping an integrated methodology for managinglarge amount of RW with unknown properties. TheNEA’s RWMC is currently evaluating this request.


• Strategic RW management objectives and planning are necessary

– identify who is responsible for implementing each task, and

– provide legal powers and resources necessary to implement

• Storage and disposal: Waste needs to be characterised, stabilized and safely stored until a final disposal solution is available

• Optimisation

– Must balance radiological and non-radiological impacts

– social and economic factors

– stakeholder engagement

• Regulations: Most efficient to use existing standards, techniques and procedures, but these may need to be modified for specific conditions

EGFWMD:Key Messages


NEA’s Fukushima-Related Activities

• The Co-operative Programme on Decommissioning (CPD)

A joint undertaking involving approximately 70 organizations (including TEPCO) to share knowledge from the many decommissioning projects underway around the world.

• The Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Station (BSAF)

Benchmarking of severe accident codes using input parameters from the experience at the Fukushima Daiichi plant.

Phase 1 completed analysis of the first 3 days of the accident, focusing on molten fuel relocation. Report published in February 2016.

Phase 2 will provide analysis of the first 3 weeks of the accident and include information on fission product behaviour.


NEA’s Fukushima-Related Activities

• Senior Expert Group on Safety Research Opportunities Post Fukushima (SAREF)

Initial SAREF report published in February 2017 Identified near-term and long-term research opportunities:

To address safety knowledge gaps To support safe and timely Fukushima decommissioning

Near-term projects under development: Fuel debris analysis and characterization Analysis of data and information from containment and reactor building

examination

• The Preparatory Study on Analysis of Fuel Debris (PreADES)

New initiative to improve methodologies of fuel debris characterization. Includes planning for future R&D using fuel debris from Fukushima Daiichi.

© 2017 Organisation for Economic Co-operation and Development 9

The NEA is reviewing whether to establish a proposed Committee

on Decommissioning and Legacy Management to:

− Bring together leading officials and experts to coordinate national policies,

share experiences and knowledge, establish best practices, and improve

understanding of decommissioning costs

Considering A New NEA Standing Committee:Decommissioning and Legacy Management

A Decision by the NEA Steering Committee is possible in

October 2017

− Conduct joint activities and identify research

needs

− Cover both commercial nuclear power plant

decommissioning and management of

radiological legacies from past research,

governmental, and industrial activities


NEA’s Fukushima-Related Activities: NEA Radiological Protection Reports

2017 Stakeholders Making RP Decisions: CRPPH History and Lessons

2016 Radiological Protection Science and Application

2015 An Evidence-based Approach to Post-accident Food Safety Policy

2014 Framework for the Post-Accident Management of Contaminated Food

2014 Occupational Radiation Protection in Severe Accident Management

2014 The International Workshop on Radiation and Thyroid Cancer

2014 Topical Session on Recovery Management Summary Report

2013 International Short Term Countermeasures Survey

2011 Practices & Experience in Stakeholder Involvement for Post-Nuclear Emergency Management


Important Next Steps:Continued Stabilization and Risk Reduction


Excellent Progress Has Been Accomplished:The Site is Far Safer than 5 years Ago

1F Unit 1 After 3/11

1F Unit 1 As It Appears Today


Excellent Progress Has Been Accomplished:The Site is Far Safer than 5 years Ago

1F Unit 3 After 3/11

Spent Fuel Removal Equipment being Installed Above 1F Unit 3


Important Next Steps:Improved Public Engagement

NEA supports dialogue sessions organised by ICRP

that began in 2011 with stakeholders from affected

areas of Fukushima Prefecture


Dialogue Focus Phase I Date

1 Initiation of a new process of discussion among affected stakeholders November 2011

2 Understand what has been accomplished in Date February 2012

3 Food production, distribution and marketing July 2012

4 Education and memory November 2012

5 The difficult decision to stay/return or go/not return March 2013

6 The situation and challenges faced by the citizens of Iitate July 2013

7 Self-help actions taken by local people in cooperation with experts Dec 2013

8 The situation and challenges faced by the citizens of Minamisoma May 2014

9 The challenges of raising children in a contaminated area August 2014

10 The importance of tradition and culture for recovery December 2014

11 The importance of measurements for recovery May 2015

12 The future, in particular the future of the Suetsugi region September 2015

ICRP Stakeholder Dialogues

Dialogue Focus Phase II Date

1 The Situation of Miyakoji Today March 2016

3 Dialogue on the rehabilitation of living conditions: Itate Village July 2016

2 Dialogue on the rehabilitation of living conditions: Kawauchi Village October 2016

4 Dialogue on the rehabilitation of living conditionsn: Futaba Village March 2017

5 Dialogue on what do we need for our future: Date City July 2017


NDF’s Initiative:Meeting with Fukushima Stakeholders

Held on July 2, 2017 in Hirono-town Central Gymnasium.

Included presentations and discussions with local stakeholders from towns throughout Fukushima prefecture.

An excellent initiative – and a good start toward further enhancement of public involvement.


A Fukushima Cattle Farmer Recently Won an Award for His High

Quality Beef

Peaches and other Fukushima produce are recovering on supermarket shelves

Important Next Steps:Food Safety and Image


The Framework Being Developed by NEA reflects:

• The accident country is responsible to develop an accident-specific approach to food criteria and management

• There is a political, social and ethical rational for a consistent approach and single criteria for domestic consumption and exportation of food

• Importing countries may accept the accident country’s export criteria for allowing importation (under discussion with FAO Codex)

Building Confidence in Food:A New Global Post-Accident

Food Management Framework


State-of-the-art science is essential to re-establishing agricultural activities in accident-affected areas

Trust and confidence in accident-country-government decisions are necessary aspects for re-establishing domestic and international consumption of food from accident-affected areas

To be maximally effective, both a technical framework and a neutral, international, science-based process of validation are needed to re-establish confidence

Building Confidence in Food:A New Global Post-Accident

Food Management Framework


• “ValidFood” is a proposed process for the international validation of food safety after an radiological accident or other large contamination event. ValidFood provides:

– A small international team of internal-exposure experts to review the science and processes used to develop food acceptance criteria

– A small international team of radioassay experts to review the processes and technology used to certify food products to verify their consistency with recognized principles of radiological protection

• A multilateral agreement may be required to successfully implement this process and assure that its results are respected

A Possible Approach to Validation: NEA’s “ValidFood” Process


Thank you for your attention

Follow the NEA

decommissioning of the fukushima daiichi site · decommissioning of the fukushima daiichi site:...

Documents