NEA/CSNI Workshop on

Safety Assessment of Fuel Cycle Facilities – Regulatory Approaches and Industry Perspectives

Toronto, Canada, 27-29 September 2011

Deadline for abstracts:   15 March 2011
Notification of accepted papers:   30 April 2011
Deadline for full paper submission, registration and hotel booking: 15 July 2011
Deadline for presentation submission:   31 August 2011
Workshop registration   Closed


Organisation and host

The CSNI Workshop on Safety Assessment of Fuel Cycle Facilities – Regulatory Approaches and Industry Perspectives will be held by the OECD Nuclear Energy Agency and hosted by Canadian Nuclear Safety Commission (CNSC) from 27-29 September 2011 in Toronto, Canada. The Workshop is planned for 3 days.


The objective of this workshop is to review the various approaches of national regulators, and their technical support organizations (TSO), in the Safety Assessment of Fuel Cycle Facilities (FCFs) and the experience of their industry in providing safety justification for their facilities. It will address the present situation in various NEA member countries (MC) and will concern both initial safety assessment of new facilities and reassessment of existing ones (periodic safety review). It will also consider trends of future improvement of safety assessment techniques.

The objective of the Working Group on Fuel Cycle Safety (WGFCS) is to advance the understanding for both regulators, and their TSO, and operators of relevant aspects of nuclear fuel cycle safety in member countries.
For the various FCFs types and processes, and age, special emphasis will be given to the identification of initiating events, the determination of release limits, justification on chemical safety and the various risk assessment techniques used for FCF safety.

Safety authorities, and their TSO, and FCF operating organisation are invited to share information on their approaches, practices and current development.


Nuclear fuel is produced, processed, and stored mainly in industry scale facilities where uranium (U) ores are processed and refined. Uranium is converted and then enriched, nuclear fuel is fabricated (U fuel and U/Pu fuel for the close cycle option); and spent fuel is stored and reprocessed (close cycle option). Facilities dedicated to the research and development of new fuel or new processes are also considered as FCFs.

The nuclear renaissance will require the set-up of new FCFs and the modernization of existing ones as extension of operational life and increase of capacity.

The general trend of the safety assessment of nuclear facility is often led by the methodology and techniques initially developed for Nuclear Power Plants (NPPs). Consequently the workshop intends to share experience and limits on this direction.

Scope, content and outline

Fuel cycle facilities cover a wide diversity of installations. This activity will focus on: facilities dedicated to conversion, enrichment, fuel manufacturing, interim spent fuel storage, spent fuel reprocessing, radioactive waste conditioning, on-site interim storage of radioactive waste.

Specificities related to the diverse facility age, from 60 years old to those currently in design/ construction will be addressed. Nevertheless the safety assessment of decommissioning of FCF would be out of scope; as WGFCS shall take into account the limits of its human resources for achieving tangible results.

For the same reason, in the field of waste management, this activity is proposed to focus only on national regulatory methodologies and the industrial practices related to waste conditioning (resulting in liquid/aerial discharges or conditioned solid waste) and waste storage (with exception of legacy waste management and final disposal).

Particular assessment themes have been identified by the 2009 WGFCS meeting, and revised and finalized at the October 2010 meeting:


The organisation of the Workshop is divided into three parts: Opening Session; Technical Sessions; and a Final Summary Session. All the participants are expected to take part in the discussion and in the formulation of conclusions in the final session.

Last reviewed: 26 May 2011