Committee on the Safety of Nuclear Installations
    Working Group on Fuel Cycle Safety (WGFCS)

    International Workshop on

    Chemical Hazards in Fuel Cycle Facilities Nuclear Processing

    Boulogne-Billancourt, France
    17-19 April 2018

    Hosted by the French Institute for Radiological Protection and Nuclear Safety (IRSN) and the Nuclear Energy Agency (NEA)


    Participants are required to fill in the registration form and send it via e-mail to and by 15 February 2018.

    First announcment and call for papers

    Preliminary registration deadline E-mail registration form 15 February 2018
    Deadline for full paper submission   28 February 2018
    Deadline for presentations   30 March 2018

    General information

    The Nuclear Energy Agency (NEA) Committee on the Safety of Nuclear Installations (CSNI) Working Group on Fuel Cycle Safety (WGFCS) will hold an international workshop on Chemical Hazards in Fuel Cycle Facilities Nuclear Processing. The workshop will be hosted by the IRSN in co-operation with the United States Nuclear Regulatory Commission (US NRC) and the NEA on April 17-19 2018 in Boulogne-Billancourt near Paris, France. The workshop is planned for three days. This announcement includes the information on this event and the call for papers to be submitted for presentation at the workshop.


    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 discuss and review national activities, safety and regulatory approaches for managing chemical hazards at fuel cycle facilities (FCFs), the effectiveness of these activities, and areas for improvement.


    The chemical forms of nuclear material used in FCFs as well as the chemicals and processes used in nuclear material processing can introduce chemical toxicity hazards as well as reactive chemical hazards. A wide variety of chemical hazards is considered in the design, construction, operation and decommissioning of FCF’s.

    In 2011, the WGFCS held a workshop, “Safety Assessment of Fuel Cycle Facilities – Regulatory Approaches and Industry Perspectives.” Recommendations from this workshop recognised the importance of the impact of chemical hazards on safety assessments of FCFs. Additionally, the WGFCS members agreed that there was a benefit for the fuel cycle community to identify best practices for chemical safety within the nuclear industry and other industrial sectors, such as the chemical industry.

    Scope and content

    FCFs should be designed and operated in a manner that ensures that the risks of hazardous chemical exposure, corrosion, fire, explosion and contamination are controlled and minimised. The evaluation of chemical risks for FCFs is important to the safety of nuclear processing. Consequently, assurance of safety requires control of both the chemical and nuclear hazards.

    Chemical safety hazards can occur across the spectrum of FCFs including uranium conversion facilities, uranium enrichment facilities, all types of fuel fabrication facilities, irradiated material processing facilities and waste management operations. 

    The workshop will discuss potential regulatory issues involving chemical processing of nuclear materials operations as well as safety issues regarding accidents prevention and mitigation of the potential consequences (chemical and possibly radiological) for the workers, the public and the environment. The workshop will be centred on the following technical focus areas:

    Session 1: Regulations, standards, requirements and guidance for chemical safety for FCF’s, including:

    • review of national approaches and practices;
    • chemical exposure standards;
    • similarities/differences between the nuclear industry and the chemical industry,  if any.

    Session 2: Consideration of chemical hazards for the design, commissioning, operation and decommissioning of FCFs, including:

    • identification of postulated initiating events;
    • review of methods and tools for estimation and safety assessment/reassessment of chemical risks and releases;
    • review of national approaches to determine the tolerability of the toxicological consequences compared to chemical exposure standards;
    • good practices for the safe management of chemical risks;
    • human and organisational factors regarding processing of chemicals;
    • detection and alarm capabilities for chemical releases.

    Session 3: Emergency preparedness and response in case of accidental situation due to chemical hazards in FCFs, including:

    • jurisdictional interfaces and decision-making process for large site facilities relevant to different regulations (nuclear/chemical hazards);
    • identification of design extension conditions (especially in consideration of post-Fukushima Daiichi safety reviews);
    • application of calculation methods and monitoring of chemicals in case of accidental release;
    • prevention and mitigation of consequences;
    • guidelines and emergency planning.

    Session 4: Operating experience feedback on managing chemical hazards in FCFs, including:

    • review of significant events and lessons learnt;
    • research and development needs;
    • future challenges for new FCFs on chemical safety.

    Workshop agenda is available on the workshop webpage , to which you will receive access as from 23 February 2018 after your registration is confirmed.

    Format and outline

    The workshop will include an introductory session, four technical sessions devoted to presentations by participants on the topics identified above and a final session. The final session will summarise the discussions 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.

    Site visit on 19 April 2018

    A technical visit to Saclay Nuclear Research Centre, which is 20km from Paris, will be arranged during the last day of the workshop. Due to logistical constraints, the number of participants to the visit is limited to 30 persons.

    There will be no charge for the visit. A list of participants has been drawn up. Passport is requested for non-EU citizens.

    General schedule

    7:45 – Bus to Saclay Center from Denfert-Rochereau metro and RER B station

    9:00 – Arrival at Saclay Center - Access Controls

    9:30-12:00 – Visit of IRSN’s experimental facilities and means

    • TOSQAN: Test station for simulation and qualification in airborne conditions
    • STARMANIA: Station for aeraulic transfer and mechanical resistance applied to the harmful effects of incidents and accidents

    12:15-14:00 – Lunch

    14:15-15:45 – Visit of CEA's installations from the Nuclear Activities Direction of Saclay/Physico-Chemistry Department

    16:10 – Leave Saclay Center

    16:30 - Back to Massy RER B station  

    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.

    Abstracts and registration

    Participants wishing to present papers shall submit an abstract (between 200 and 400 words). All abstracts should be submitted by 29 September 2017 electronically with the registration form when available on this page. (Note: All abstracts should be submitted electronically, using MS Word and “Times New Roman 11” font.) Download the abstract form.

    The organising committee will review the abstracts, and authors will be notified of the result of the review by 15 November 2017. 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 open after 5 January 2018. Participants should verify final registration dates on this page. Details on travel costs, meeting space, and the registration and site visit fees will be provided at a later date.

    Papers and presentations

    Full papers should be submitted by 28 February 2018. Presentations of the papers should not exceed 20 minutes and should be sent electronically no later than 30 March 2018.

    Location and accommodation

    The workshop will be hosted by IRSN and NEA in co-operation with the US NRC. It will be held at NEA offices in Boulogne-Billancourt near Paris, France.

    More details about the workshop location, the name of the hotel and information about hotels nearby will be provided later.

    All costs incurred by participants for travel, stay and daily expenses are the responsibility of the participant and are not borne by the IRSN or NEA.


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

    Workshop proceedings

    Proceedings of the workshop will be published and will include full papers and presentations from the opening session and all technical sessions, conclusions and recommendations from discussions in panel sessions and the final summary session of the workshop.

    Organising committee

    Name Organisation Country E-mail
    Véronique Lhomme IRSN France
    Marc Philippe IRSN France
    Craig Erlanger NRC United States
    Marilyn Diaz NRC United States
    Kenji Mori NRA Japan
    Takanashi Mitsuhiro NRA Japan
    Sarah Eaton CNSC Canada
    Olli Nevander NEA International

    Contact addresses

    Olli Nevander                                                     
    Nuclear Safety Division                                     
    OECD Nuclear Energy Agency                                   
    46, quai Alphonse Le Gallo
    92100 BOULOGNE BILLANCOURT               
    Tel.: +33 (0)1 45 24 10 58                                 

    Véronique Lhomme
    Institut de Radioprotection et de Sûreté Nucléaire
    Tel.: +33 (0)1 58 35 73 08

    Marilyn Diaz
    US Nuclear Regulatory Commission
    Office of Nuclear Material Safety And Safeguards
    Division of Fuel Cycle Safety, Safeguards and Environmental Review
    Tel.: +1 (301) 415-7110

    Last reviewed: 18 April 2018