27th Meeting of the Working Party on Nuclear Criticality Safety (WPNCS)

Under the guidance of the  Nuclear Science Committee (NSC) , the Working Party on Nuclear Criticality Safety (WPNCS) focuses on technical and scientific issues related to criticality safety. Specific areas of interest include investigations of static and transient configurations encountered in the nuclear fuel cycle, as well as fuel fabrication, transport and storage.


The next meeting of the WPNCS, its subgroups and the SFCOMPOTRG will be held from 27 June to 1 July 2022. 


Provisional schedule

Monday, 27 June (all day)

WPNCS SG12 on spent nuclear fuel decay heat

Tuesday, 28 June (morning)

WPNCS SG9 on transport in random geometries

Tuesday, 28 June (afternoon)


Wednesday, 29 June (all day)

SFCOMPOTRG (continued)

Thursday, 30 June (morning)

WPNCS SG11 on bias and correlated data

Thursday, 30 June (afternoon)

WPNCS SG10 on nuclear data uncertainties quantification on spent fuel inventory

Friday, 1 July (all day)

27th WPNCS meeting*


* Participation to the 27th WPNCS meeting is restricted to WPNCS members or upon invitation.

Registration & Agendas

Please register here before June 13th, 2022.

Agendas will be made available in due time on a restricted area that can be accessed by registered and approved participants. 

Meeting format

The meeting will be held in hybrid format: in-person at the OECD headquarters in Paris XVI and remotely on the Zoom platform.