NEA Mandates and Structures

Working Group on Risk Assessment (WGRISK)

Chair(s): Vinh DANG, Switzerland
Secretary:  Andrew WHITE
Vice-Chair(s): Marina RÖWEKAMP, Germany
Attila BAREITH, Hungary
Member(s):All NEA member countries
Full participant(s): European Commission
Under the NEA Statute
Participant(s): India
Observer(s)(International Organisation): International Atomic Energy Agency (IAEA)
By agreement
Date of creation:31 December 1999
End of mandate:31 December 2020

Mandate (Document reference):

Mandate (Document extract):

Extract from document NEA/CSNI/R(2017)17


The Working Group shall support improved uses of Probabilistic Safety Assessment (PSA) in risk-informed regulation and safety management through the analysis of results and the development of perspectives regarding potentially important risk contributors and associated risk-reduction strategies. The Working Group shall address PSA methods, tools, and data needed to provide this information.

The main objective of the Working Group on Risk Assessment (WGRISK) is to advance the PSA understanding and to enhance its utilisation for improving the safety of nuclear installations, for improving the operation and the design of nuclear installations and for increasing the regulatory effectiveness through risk-informed approaches. In order to achieve this objective, the Working Group shall:

  1. Report to the Committee on the Safety of Nuclear Installations (CSNI) and assist that Committee with its work.
  2. Constitute a forum for exchange of information and experience related to risk assessment in NEA member countries. This exchange is not only limited to technical discussions on questions regarding risk analysis approaches, results, insights, applications and interactions with other disciplines and analysis techniques, but it shall also include identifying and prioritising important issues requiring additional research.
  3. Prepare technical reviews (such as state-of-the-art reports, technical opinion papers, compilations of ongoing efforts, comparison studies etc. as appropriate) of work in all phases of risk assessment to assist further developments and the application of PSA in risk-informed decision making. This work will be done in task groups, whose work will be organised in a project-like manner with outcomes and milestones.
  4. Sponsor specialist meetings and workshops to further its objectives.
  5. Collaborate with or assist other CSNI working groups, the Committee for Nuclear Regulatory Activities (CNRA) and other NEA bodies on request. In particular, the WGRISK collaborates with other bodies such as the Working Group on on Integrity and Ageing of Components and Structures (WGIAGE) and the Working Group on External Events (WGEV), where those two bodies provide characterisation of seismic and other external hazards, and the WGRISK assesses the risk consequences. The Working Group will also co-operate with other international organisations, aiming among others to avoid duplication of effort.