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Joint NEA and NDF Workshop on the Characterisation of Large Quantitiesof Unconventional and Legacy Waste

An International Support Initiative for Fukushima Dai-ichi

CONCEPT PAPER

31 August – 01 September 2022
The Nuclear Energy Agency (NEA) and Damage Compensation and Decommissioning
Facilitation Corporation (NDF) are co-organising an international Workshop on theCharacterisation of Large Quantities of Unconventional and Legacy Waste. This activity
aims at supporting progress on the clean-up of Fukushima Daiichi.

Background
The workshop builts on the work of the former NEA Expert Group on Characterisation
Methodology of Unconventional and Legacy Waste (EGCUL)1. The group has publishedthe “Characterisation Methodology for Unconventional and Legacy Waste” report2 in 2021
on characterisation in terms of safe management of radioactive waste by considering both
the radiological and non-radiological hazards. Several case studies have been prepared fromFrance, Japan, Russia, Ukraine and the United Kingdom supported by a range of material
provided by NEA member countries during the meeting held in December 2019 by theCommittee on Decommissioning of Nuclear Installations and Legacy Management. The
case studies provide perspectives from a variety of different sites which each have theirown specific prevailing circumstances. The challenges and lessons learnt provide valuable
insights which could be beneficial to those developing characterisation strategies,
objectives and plans.

1

Expert Group Webpage: https://www.oecd-nea.org/jcms/pl_28646/
See NEA Report (2020), Characterisation Methodology for Unconventional and Legacy Waste:
https://www.oecd-nea.org/jcms/pl_62389/

2

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Objectives
With the aim to develop or update of any characterisation and categorisation methodology
for unconventional waste, e.g. post-accident or legacy radioactive waste, the workshop
aims at:

Sharing the overview and outcomes of the Characterisation Methodology for
Unconventional and Legacy Waste report 2;
Sharing the current experience and advancement in characterisation and categorisation
methodology;
Identify characterisation methodology and strategy for decommissioning to support
Fukushima Dai-ichi;
Based on the exchange of experience, identify potential future work in the areas ofwaste mangement and decommissioning;

Workshop format
The workshop will be held in connection to the 6th International Forum on theDecommissioning of the Fukushima Daiichi Nuclear Power Station (28-29 August 2022):
https://ndf-forum.com/en/ (please note that a separate registration over the NDF-Forumwebpage is necessary).
For a limited amount of participants, a site visit to Fukushima Daiichi Nuclear Power Station(TEPCO), Okuma Analysis Center (JAEA), and Naraha Center for Remote Control
Technology Center (JAEA) will be organized (30 August 2022). The exact visiting sites
will depend on the condition of COVID in Japan and the measures for acceptance.
The workshop will be a two-day event (31 August – 01 September 2022). The participantsat the venue of the workshop will be limited to 50 people. A virtual component of theworkshop might be considered, dependend on the venue and resources. For participants, areception will be held in the evening of 31 of August 2022. The concept of the workshop
forsees the following sessions:-Opening Session:
Welcome remarks, Aims and goals of the Workshop;-Topical Session:
Findings and Outcome of the EGCUL Work and Report 2, International Country
Reports and Lessons Learned;-Group Activity:
Speakers and Participants will be invited to carry out a collaborative brainstorming
and breakout group work to assess and propose ways to support development ofan updated methodology for characterisation; The group findings should be presented by a group volunteer;-Key Note Speech:
Selective contribution (such as invited lecturer)

Version: V4.0 (18.07.2022)-Panel Discussion on Technical Perspective:
Experts of the Panel are invited to build on the individual presented information(EGCUL report, Country Reports, Group Work and Key Note) and engage in a
discussion on how to progress on solving the technical challenges and required
next steps for the Methodology for Characterisation at 1F (and potentially beyond)in Japan. Participants will be invited to support this collaborative discussion. Thesecould include:o scope of materials, buildings, items and areas to support a comprehensive material inventory (justify exclusions);o purpose, requirements, and quality standards for waste characterisation (including safe and efficient waste managed and disposal);o priorities for characterisation according to several factors (e.g. activity and radionuclide type, hazard potential, etc.)
o challenges and solutions to charactering large volumes of low activity waste
in an effective way (including statistical methods, to compensate the lack ofphysical data);-Panel Discussion on Policy Regulatory and Stakeholder Perspective:
Experts of the Panel are invited to build on the individual presented information(EGCUL report, Country Reports, Group Work and Key Note) and engage in a
discussion on how to progress on solving the regulatory and stakeholder engagement challenges and required next steps for the Methodology for Characterisation
at 1F (and potentially beyond) in Japan that will enable radioactive waste disposalroutes to be defined which are acceptable to communities and regulators. Participants will be invited to support this collaborative discussion. These could include:
o definition of the roles and responsibilities of organisations for the development
and implementation of a waste management strategy;o processes for the development of Waste Acceptance Criteria (WAC) and otherregulatory and technical requirements for treatment and disposal;
o integrated, graded and transparent decision-making;o engagement with affected communities and actors;-Conclusion Session:
Findings and main proposals will be summarized and presented to workshop
participants; Participants will be invited to provide feedback and comments to thesuggested outcomes of the workshop;

Venue
Iwaki Business Innovation Center (LATOV 6th Floor)
120 Taira Tamachi, Iwaki city, Fukushima, JapanLanguage
The working language is English. Breakout discussions as well as questions (and answers,if needed) can be accomodated in Japanese.

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Registration
Interested participants are requested to complete the registration on the public webpage by
19 August 2022. The number of workshop attendees is restricted based on the venue andhygiene measures in place.
A hybrid virtual participation is being considered, but virtual participants participation
might be limited.

Workshop Webpage
The workshop webpage can be accessed at https://www.oecd-nea.org/jcms/pl_71354.
All workshop materials can be found by registered participants on the dedicated password-protected myNEA SharePoint (regularly updated):
https://mynea.oecd-nea.org/sites/EGCUL%20Workshop/

Workshop Chair
The workshop will be (co-)chaired by:
Steve HARDY

NDA, UK

Kazuyuki KATO

NDF, Japan

Programme Committee
The Programme Committee (PC) members for the developing of the programme and preparation for the workshop are:Kazuyuki KATO
Daisuke TAKENOUCHI

NDF, Japan
NDF, Japan

Steve HARDY
Rebecca TADESSE
Martin BRANDAUER
Yuko MAEHASHI

NDA, UK
NEA Head of RWMD Division
NEA RWMD
NEA RWMD

Key preparatory milestones
Opening of Registration

15 July 2022

Deadline for submission of presentation

11 August 2022

Deadline of Registration

19 August 2022

Workshop

31 August – 1 September

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Contacts
Contact at NDF: Kazuyuki KATO (kato-kazuyuki@ndf.go.jp)
TAKENOUCHI (takenouchi-daisuke@ndf.go.jp)

andDaisuke

For more information regarding this document, please contact Martin BRANDAUER(Martin.BRANDAUER@oecd-nea.org).
For further information regarding the logistics, please contact Yuko MAEHASHI(Yuko.MAEHASHI@oecd-nea.org).

Related links
NDF
NEA
1FD6 Event
EGCUL Webpage

https://www.dd.ndf.go.jp/
www.oecd-nea.org/
https://ndf-forum.com/en/
https://www.oecd-nea.org/jcms/pl_28646/

EGCUL Report
Workshop Webpage

https://www.oecd-nea.org/jcms/pl_62389/
https://www.oecd-nea.org/jcms/pl_71354