NEA Mandates and Structures

Expert Group on Multi-physics Experimental Data, Benchmarks and Validation (EGMPEBV)

Chair(s): Timothy E. VALENTINE, United States
Secretary:  Michael FLEMING
Member(s):All NEA member countries
Full participant(s): European Commission
Under the NEA Statute
Observer(s)(International Organisation): International Atomic Energy Agency (IAEA)
By agreement
Date of creation:30 June 2014
End of mandate:30 June 2020

Mandate (Document reference):


Mandate (Document extract):

Extract from document [NEA/SEN/NSC(2018)10]


The processes for performing experiments, creating benchmarks and standard problems, and using these data to validate computer codes, have been developed and implemented for several decades, with highly satisfactory results for most standard applications. Nevertheless, the global context of nuclear technology development continues to evolve and new challenges to the status quo have been appearing:



The objectives of the Expert Group are the following:

Links to other NEA working parties

The expert group will liaise closely with other relevant NEA working parties and expert groups, including those operating under the guidance of the NSC and the Committee on the Safety of Nuclear Installations (CSNI), to ensure that the respective programmes are complementary and to provide advice and support where required and undertake common work where appropriate.


The deliverables of the Expert Group are the following: