SYMPOSIA PAPER Published: 01 January 2007

Comparison of the Results of the Calculational and Experimental VVER-440 Pressure Vessel Dosimetry at Paks NPP


At Paks NPP, Hungary, a major project was launched to investigate the possibility of lifetime extension up to about 60 years. As a part of this project, detailed calculational and experimental investigation of the pressure vessel neutron radiation load having been performed. A computational procedure was developed earlier for evaluating the fast flux in the pressure vessel. The neutron source is taken from core calculation performed by the code karate and it is given in the core boundaries. The neutron transport from the source to and through the pressure vessel is investigated by MCNP4C. This procedure has now been tested against a new set of activation foil measurements. Good agreement was found between the measured and calculated reaction rates for fast reactions. In the case of thermal reactions, the agreement was weaker. The effect of error in nuclear data on fast reaction was studied.

Author Information

Hordosy, Gabor
KFKI Atomic Energy Research Institute, Hungary
Hegyi, Gyorgy
KFKI Atomic Energy Research Institute, Hungary
Kereszturi, Andras
KFKI Atomic Energy Research Institute, Hungary
Maraczy, Csaba
KFKI Atomic Energy Research Institute, Hungary
Vertes, Peter
KFKI Atomic Energy Reserch Institute, Hungary
Zsolnay, Eva, M.
Budapest University of Technology and Economics, Institute of Nuclear Techniques, Budapest, Hungary
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: E10
Pages: 34–39
DOI: 10.1520/STP45424S
ISBN-EB: 978-0-8031-6242-6
ISBN-13: 978-0-8031-3412-6