Thermo-fluid dynamics, corrosion and reactivity effects in case of water- and air-ingress accidents in high temperature reactors
Description
A numerical model for the description of water and air ingress accidents in the primary loop of the High Temperature Reactors is presented. The code TINTE is further improved and can be used for such an accident analysis. The thermo-fluid dynamics by different heat transport characteristics and the chemical processes between water, air and graphite on the basis of new experimental results are taken into consideration. The influence of the composition of cooling gas and graphite corrosion on the nuclear characteristics is also included. The developed computer code TINTE-C is tested on a fictitious example of a water ingress accident at the AVR reactor. (orig./HP)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
Die Arbeit hat zum Ziel, ein numerisches Modell zur Beschreibung der mit Wasser- und Lufteinbruechen in den Primaerkreis eines Kugelhaufen-Hochtemperaturreaktors verbundenen Phaenomene zu erstellen. Dazu war es notwendig, den Code TINTE dahingehend auszubauen, dass mit ihm diese weitere Gruppe von Stoerfaellen behandelt werden kann. Dabei sind neben der Beschreibung der Thermofluiddynamik bei veraenderten Waermeuebertragungseigenschaften auch die chemischen Prozesse zwischen Luft, Wasser und Graphit unter Beruecksichtigung neuer experimenteller Ergebnisse untersucht worden. Ebenso wurden die nuklearen Auswirkungen der Kuehlgaszusammensetzung und der Korrosion am Graphit beruecksichtigt. Das neue Programmsystem (TINTE-C) wurde anhand eines fiktiven Wassereinbruchs in den AVR Reaktor auf seine grundsaetzliche Funktionsfaehigkeit getestet. (orig./HP)
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Additional details
Additional titles
- Original title (German)
- Thermo-Fluid-Dynamik, Korrosion und Reaktivitaetseffekte bei Wasser- und Lufteintrittsstoerfaellen in Hochtemperaturreaktoren
Publishing Information
- Imprint Pagination
- 135 p.
- Report number
- Juel--2437
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 22081191
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- AIR; COMPUTER CALCULATIONS; CORROSION; FLUID MECHANICS; GRAPHITE; HTGR TYPE REACTORS; NUMERICAL SOLUTION; PEBBLE BED REACTORS; PRIMARY COOLANT CIRCUITS; REACTIVITY; REACTOR ACCIDENTS; THERMODYNAMICS; WATER; WATER INFLUX
- Descriptors DEC
- ACCIDENTS; CARBON; CHEMICAL REACTIONS; COOLING SYSTEMS; ELEMENTS; FLUIDS; GAS COOLED REACTORS; GASES; GRAPHITE MODERATED REACTORS; HOMOGENEOUS REACTORS; HYDROGEN COMPOUNDS; MECHANICS; NONMETALS; OXYGEN COMPOUNDS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; SOLID HOMOGENEOUS REACTORS