Characterization of old nuclear waste packages coupling photon activation analysis and complementary non-destructive techniques
Résumé
Radiological characterization of nuclear waste packages is an industrial issue in order to select the best mode of storage. The characterization becomes crucial particularly for waste packages produced at the beginning of the French nuclear industry. For the latter, available information is often incomplete and some key parameters are sometimes missing (content of the package, alpha-activity, fissile mass...). In this case, the use of non-destructive methods, both passive and active, is an appropriate solution to characterize nuclear waste packages and to obtain all the information of interest.
In this article, we present the results of a complete characterization carried out on the TE 1060 block, which is a nuclear waste package produced during the 1960's in Saclay. This characterization is part of the DEMSAC (Dismantling of Saclay's facilities) project (ICPE part). It has been carried out in the SAPHIR facility, located in Saclay and housing a linear electron accelerator. This work enables to show the great interest of active methods (photon activation analysis and high-energy imaging) as soon as passive techniques encounter severe limitations.
Mots clés
delayed gamma-rays
nuclear waste packages
LINAC
nondestructive techniques
DEMSAC project
Neutrons
Radiation effects
Spectroscopy
Photonics
Activation analysis
linear electron accelerator
photon activation analysis
linear accelerators
nondestructive testing
nuclear materials packaging
radioactive waste
Gamma-rays
Radioactive pollution
ionizing radiation, radioactivity, instrumentation, nuclear instrumentation, Neutron-gamma discrimination
French nuclear industry
TE 1060 block
radiological characterization
Photofission
SAPHIR
delayed neutrons
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