The paper discusses the methodology and a computational exercise analyzing the processes taking place in the graphite stack of an RBMK reactor in case of a pressure tube rupture caused by overheating. The methodology of the computational analysis is implemented in integrated code U_STACK which models thermal-hydraulic and mechanical processes in the stack with a varying geometry, coupled with the processes going on in the circulation loop and accident localization (confinement) system. Coolant parameters, cladding and pressure tube temperatures, pressure tube ballooning and rupture, coolant outflow are calculated for a given accident scenario. Fluid parameters, movement of graphite blocks and adjacent pressure tubes bending after the tube rupture are calculated for the whole volume of the core. Calculations also cover additional loads on adjacent fuel channels in the rupture zone, reactor shell, upper and lower plates. Impossibility of an induced pressure tube rupture is confirmed.
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10th International Conference on Nuclear Engineering
April 14–18, 2002
Arlington, Virginia, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-3595-2
PROCEEDINGS PAPER
Integrated Analysis of Mechanical and Thermal Hydraulic Behavior of Graphite Stack in Channel-Type Reactors in Case of a Fuel Channel Rupture Accident
Sergei L. Soloviev,
Sergei L. Soloviev
MINATOM, Moscow, Russia
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Boris A. Gabaraev,
Boris A. Gabaraev
Research and Development Institute of Power Engineering, Moscow, Russia
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Leonid M. Parafilo,
Leonid M. Parafilo
Institute of Physics and Power Engineering, Obninsk, Russia
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Dmitry V. Kruchkov,
Dmitry V. Kruchkov
Institute of Physics and Power Engineering, Obninsk, Russia
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Oleg Yu. Novoselsky,
Oleg Yu. Novoselsky
Research and Development Institute of Power Engineering, Moscow, Russia
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Vladimir N. Filinov,
Vladimir N. Filinov
Research and Development Institute of Power Engineering, Moscow, Russia
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Oleg I. Melikhov
Oleg I. Melikhov
Electrogorsk Research and Engineering Center, Electrogorsk, Russia
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Sergei L. Soloviev
MINATOM, Moscow, Russia
Boris A. Gabaraev
Research and Development Institute of Power Engineering, Moscow, Russia
Leonid M. Parafilo
Institute of Physics and Power Engineering, Obninsk, Russia
Dmitry V. Kruchkov
Institute of Physics and Power Engineering, Obninsk, Russia
Oleg Yu. Novoselsky
Research and Development Institute of Power Engineering, Moscow, Russia
Vladimir N. Filinov
Research and Development Institute of Power Engineering, Moscow, Russia
Oleg I. Melikhov
Electrogorsk Research and Engineering Center, Electrogorsk, Russia
Paper No:
ICONE10-22338, pp. 625-631; 7 pages
Published Online:
March 4, 2009
Citation
Soloviev, SL, Gabaraev, BA, Parafilo, LM, Kruchkov, DV, Novoselsky, OY, Filinov, VN, & Melikhov, OI. "Integrated Analysis of Mechanical and Thermal Hydraulic Behavior of Graphite Stack in Channel-Type Reactors in Case of a Fuel Channel Rupture Accident." Proceedings of the 10th International Conference on Nuclear Engineering. 10th International Conference on Nuclear Engineering, Volume 1. Arlington, Virginia, USA. April 14–18, 2002. pp. 625-631. ASME. https://doi.org/10.1115/ICONE10-22338
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