Monitoring the distribution of energy release in BN-600 by γ scanning fuel assemblies

Yu. Khomyakov; A. Kochetkov; V. Izotov; V. Prishchepa; V. Zheltyshev; V. Mal’tsev; S. Mitrofanov; V. Roslyakov
December 2008
Atomic Energy;Dec2008, Vol. 105 Issue 6, p436
Academic Journal
A complex of computational and experimental measures for monitoring the distribution of energy release in the core has been perfected over the 25-year history of BN-600 operation in the Beloyarskaya nuclear power plant. Continual monitoring is conducted together with calculations based on three-dimensional multigroup calculations and periodic γ scanning of regular BN-600 fuel assemblies with upgrading of the core of this reactor. At the present time, in the course of switching BN-600 to a new core with four refuelings and maximum fuel burnup increased to 11.1% h.a., the experimental procedure has been upgraded and optimized taking account of the experience gained, three series of such measurements have been completed, and new experimental data on the character of the radial and axial neutron-field distribution have been obtained.


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