Published January 1983 | Version v1
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Fuel behavior under loss-of-coolant-accident conditions

Creators

Description

The paper is a comprehensive summary of the main results of the KfK/PNS investigations on LWR fuel behavior under LOCA conditions. These investigations were started in 1973 and will be finished in 1983. It is shown that the dominant phenomena, such as the deformation and failure of the cladding, the high temperature steam oxidation, the interaction of the cladding with fuel and fission products, and the influence of thermohydraulics on the cladding deformation are well understood today. All results confirm that under LOCA conditions the coolability of the core is not questioned and the fission product release is well below license limits. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Der Vortrag gibt einen kurzgefassten Ueberblick ueber die wesentlichen Ergebnisse der KfK/PNS-Untersuchungen zum LWR-Brennstabverhalten unter LOCA-Bedingungen. Diese Untersuchungen wurden im Jahre 1973 begonnen und werden 1983 beendet. Es wird gezeigt, dass die dominierenden Phaenomene, wie z.B. die Deformation und das Versagen der Huellrohre, die Hochtemperaturdampfoxidation, die Wechselwirkung der Zircaloy-Huelle mit Brennstoff und Spaltprodukten und der Einfluss der Thermohydraulik auf die Huellrohrdeformation heute gut verstanden werden. Alle Ergebnisse belegen, dass unter LOCA-Bedingungen die Kuehlbarkeit des Kerns nicht in Frage gestellt ist und die Spaltproduktfreisetzung deutlich unter den Auslegungsgrenzen bleibt. (orig.)

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Additional details

Publishing Information

Imprint Pagination
42 p.
Report number
KFK--3442 B

Conference

Title
2. German-Finnish seminar on nuclear safety.
Dates
29 - 30 Sep 1982.
Place
Otaniemi (Finland).

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
14768901
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BWR TYPE REACTORS; DEFORMATION; FISSION PRODUCT RELEASE; FUEL CANS; FUEL-CLADDING INTERACTIONS; HYDRAULICS; LOSS OF COOLANT; OXIDATION; PWR TYPE REACTORS; REVIEWS; STEAM; THERMODYNAMICS
Descriptors DEC
ACCIDENTS; CHEMICAL REACTIONS; DOCUMENT TYPES; REACTOR ACCIDENTS; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS