Re: Criticality accident

[Enrico SARTORI <sartori@nea.fr>]

The Los Alamos report is well known to the criticality safety community.

Based on this report is a graph you can see at

http://www.nea.fr/download/nsc/CritAcc.gif. This shows the frequency of

criticality accidents per year and their cumulative number for the 56

years. 90% of these accidents occurred in the first 28 years, and 10% in

the last 28 years. 

 

A few further figures:



a) Number of accidents in research reactors and critical assemblies in

national labs: 38

14 persons irradiated + 12 casualties

USA: 26

Russia (ex-USSR): 6

Canada: 2

Argentina, Belgium, France, Yugoslavia: 1



b) Accidents in fuel cycle installations: 22

~46 persons irradiated + 8 casualties

Russia (ex-USSR): 13

USA: 7

Japan, UK: 1

Total: 60 accidents, ~60 persons irradiated + 20 casualties  

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Enrico Sartori               Tel.: +33 1 45 24 10 72 or 78

OECD NEA Data Bank           Fax : +33 1 45 24 11 10 or 28

12 Bd des Iles

92130 Issy-les-Moulineaux    e-mail: sartori@nea.fr

France                       www-->  http://www.nea.fr

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