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System for localization and cooling of corium of accidental light water nuclear reactor
A.P. Aleksandrov Research Institute of Technology.
Alexandrov Research Institute of Technologies (NITI).
Alexandrov Research Institute of Technologies (NITI).ORCID iD: 0000-0001-7816-8442
2003 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

FIELD: systems for localization and cooling of melted body at emergency its exit for the limits of the reactor's body. ^ SUBSTANCE: cooling trap is located in the mine under the reactor and fulfilled in the form of a vessel with installed in it a basket with sacrificial materials-diluters of uranium containing and steel components of corium. The bottom of the cooling drum is no less than on 30% thicker of its walls and has an incline to the center in the limits of 10-20 degrees; sacrificial materials-diluters are formed in the shape of briquettes enclosed in the steel drum. The mass of the material-diluters of oxide uranium containing and steel components of corium are determined with the help of calculated ratio computations which take into considerations: the mass of components of the corium, incoming from the reactor; physical parameters of components of melt; density of critical thermal flow drawing off the melts to cooling water through the drum. It is proposed to fulfill the directing arrangement for the body in the form of a funnel located between the bottom of the reactor and the higher edge of the trap. At that the walls of the directing arrangement are covered with heat-resistant concrete, over which a covering of easily melted concrete is put on. ^ EFFECT: the invention allows to increase efficiency and reliability of the system by way of improving conditions for coming in and cooling of melted corium in the trap. ^ 4 cl, 1 dwg

Place, publisher, year, edition, pages
2003.
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-71119OAI: oai:DiVA.org:kth-71119DiVA: diva2:486578
Patent
RU 2253914-C2 (2005-06-10)
Note

CN 1305075 C (2007-03-14)

Available from: 2012-01-30 Created: 2012-01-30 Last updated: 2013-08-07Bibliographically approved

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