Behavior of a model VVER fuel assembly under the conditions of an unanticipated accident with cooldown by pouring water from above

• Published in: Atomic energy (New York, N.Y.) Vol. 104; no. 5; pp. 360 - 364
• Main Author: Ignat’ev, D. N.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.05.2008; Springer; Springer Nature B.V
• Subjects: Applied sciences; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fission nuclear power plants; Hadrons; Heavy Ions; Installations for energy generation and conversion: thermal and electrical energy; Materials engineering; Nuclear accidents & safety; Nuclear Chemistry; Nuclear Energy; Nuclear engineering; Nuclear Physics; Nuclear power plants; Physics; Physics and Astronomy; Structural analysis; Studies; Zirconium; Fuel Element; Fuel Assembly; Reserve Water; Fuel Pellet; Substantial Dissolution; Optical microscopy; Accident; Fuel assembly; X ray analysis; Modeling; Computing method; Reactor core; Damaging; Pressurized water reactor; Nuclear reactor
• ISSN: 1063-4258; 1573-8205
• DOI: 10.1007/s10512-008-9041-x

Investigations of the behavior of model VVER-1000 fuel assemblies have been performed on the PARAMETR bench under conditions of an unanticipated accident with reserve water poured from above. The results of materials engineering investigations of a model fuel assembly, using optical and electron microscopy, as well as x-ray microspectral and x-ray structural analysis are presented. The results of these investigations are necessary for developing and verifying methods of computing improved evaluations for the purpose of modeling accidents with substantial core damage.