International Workshop on Process and Safety Improvements Experienced in Fuel Cycle Facilities since 2010
General information

The Working Group on Fuel Cycle Safety (WGFCS) of the Nuclear Energy Agency (NEA) Committee on the Safety of Nuclear Installations (CSNI) will hold an international workshop on Process and Safety Improvements Experienced in Fuel Cycle Facilities since 2010. The workshop will be hosted by the NEA on 3-4 October 2022 at NEA Headquarters, OECD Boulogne, 46 quai Alphonse Le Gallo, 92100 Boulogne-Billancourt, France. The workshop is planned for two days. 


Working under the mandate of the CSNI, the objective of the WGFCS is to advance the understanding for regulators, technical support organisations (TSOs) and operators of relevant aspects of nuclear fuel cycle safety in NEA member countries.

The objective of this workshop is to exchange information and discuss the process and safety improvements in fuel cycle facilities that have taken place in member countries after 2010, particularly after the Fukushima event in 2011.

The workshop will recognise earlier work that the WGFCS has done on a specific level since 2010, refreshing it with developed experience of post-Fukushima changes, recent experience of the pandemic and from new members of the WGFCS. It will draw together all of the experience in a single place and add to these the additional effect of advances in fuels on fuel cycle facilities.

The outcome will be a document compiling the workshop information that would potentially lead to further work the WGFCS would provide on the development of additional good practice and guidance over existing material. This is particularly useful for new member countries.

Scope and content

The workshop will focus on facilities dedicated to conversion, enrichment, fuel manufacturing, interim spent fuel storage, spent fuel reprocessing, radioactive waste conditioning and on-site interim storage of radioactive waste and will cover the full life cycle of these facilities. The final decommissioning of FCFs, legacy waste management, and final disposal will be out of the scope of this workshop.

The workshop will be centred on the following technical areas:

  • Following the introduction of design extension conditions requirements, safety assessment and safety modifications implemented to protect against the external hazards and climate change effects:
    • how regulators have changed their regulatory requirements, guidance, authorisation and approval processes for fuel cycle facilities;
    • what developments have been made in safety analysis for FCFs;
    • what modifications have been implemented in the FCFs design and operational practices.
  • Safety implications related to the increased use of dry storage and the extended periods that existing storage facilities are experiencing.
  • Safety implications related to extensions of design lifetime and safety justifications for very long-term (multi-generational) above ground storage facilities.
  • Operational Experiences from Licensing/ Compliance verification activities during the Covid-19 pandemic.
  • Safety implications on fuel production and management of pre- and post-irradiation related to the use of higher enrichment fuels.
  • Safety implications on FCF from the introduction / potential introduction of accident tolerant fuels to nuclear power reactors.
Format and outline

The workshop will include an introductory session, three technical sessions devoted to presentations by participants on the topics identified above, and a final session. Each technical session will start with an invited presentation from a key speaker. The final session will summarise the discussions, identify best practices, as appropriate, and develop conclusions and recommendations for possible further CSNI actions.

All participants are expected to take part in the discussion and in the formulation of conclusions in the final session.


Preliminary programme of the workshop

Day 1

Opening session

Technical session 1 – FCS safety modifications implemented to meet design extension conditions, protect against the external hazards and climate change effects

Technical session 2 - Safety implications related to the extended time periods that various existing fuel cycle facilities are experiencing

Day 2

Technical session 3 - Safety implications on FCF related to the need to modify design and operational practices to adapt to innovative fuels production, reprocessing or spent fuel storage and social upheaval e.g. pandemics or conflict

Final session – Discussion, development of conclusions and recommendations for further work

Logistics and participation


Consistent with other NEA workshops, participation is open to experts from FCF operating organisations, regulatory authorities and their TSOs, FCF designers and vendors, and industry associations and observers from NEA member countries. The organising committee will seek participation from other countries and organisations. Nominations should be made to the NEA Secretariat of WGFCS and registrations must be completed online: Conference DB ( Those wishing to make a presentation at the workshop should submit an abstract with their preliminary registration form. The meeting is open to a small number of experts from non-OECD member countries.

Credentials for check-in

Delegates are reminded to bring an identity document bearing a photograph for check-in at the reception desk. This document may be requested at the time of issuing delegates’ cards for the meeting. It may also be requested subsequently together with the card every time OECD premises are entered from the outside. It is desirable that the delegates are aware of this requirement in order to avoid any difficulty in obtaining entry.

Delegates should keep the badge until the last day of the meeting and return it to a drop box or reception desk at their last exit.

Abstracts and registration

Participants wishing to present shall submit an abstract (between 200 and 400 words). All abstracts should be submitted by 5 September 2022 electronically with the registration form: Conference DB ( (Note: All abstracts should be submitted electronically, using MS Word and “Times New Roman 11” font.)

The organising committee will review the abstracts, and authors will be notified of the result of the review by 12 September 2022. Specific instructions for the format of papers will be provided to authors. The paper length should not exceed 12 pages of A4 format including tables and figures.

Registration will close on 5 September 2022.

Presentations and papers

The WGFCS considers that the workshop should be focused on presentations and discussion. There is no requirement to provide a full paper, but authors should present clear conclusions within their work and a short written summary to assist in the discussions on Day 2 (if possible, the abstract can be that summary). Presentations should not exceed 20 minutes and should be sent electronically via Conference DB ( no later than 30 September 2022. If a presenter wishes to provide a full paper it should be submitted online (Conference DB ( by 26 September 2022.

Delegates are kindly reminded that meeting presentations will no longer be printed to support OECD policy to go paperless.

Location and accommodation

The workshop will be hosted by the NEA and it will be held in person at NEA Headquarters, OECD Boulogne, 46 quai Alphonse Le Gallo, 92100 Boulogne-Billancourt, France (  

All costs incurred by participants for travel, stay and daily expenses are the responsibility of the participants.


All presentations and discussions will be in English, and good command of the English language will be necessary to fully benefit from the workshop.

3 - 4 October 2022
OECD Nuclear Energy Agency, 46 Quai Alphonse le Gallo, 92100 Boulogne-Billancourt