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First results of the QUENCH-20 test with BWR bundle

Stuckert, J.; Große, M.; Laier, J.; Moch, J.; Peters, U.; Stegmaier, U.; Steinbrück, M.

Abstract (englisch):
Experiment QUENCH-20 with BWR geometry simulation bundle was successfully conducted at KIT on 9th October 2019. This test was performed in the framework of international access SAFEST infrastructure with the users from Swedish Radiation Safety Authority (SSM) in cooperation with Westinghouse Sweden, GRS and KTH.
The test objective was the investigation of a BWR fuel assembly degradation including a B4C control blade. The test bundle mock-up represents one quarter of a BWR fuel assembly. The 24 electrically heated fuel rod simulators were filled separately with krypton (overpressure of 4 bar).
According to the pre-test calculations performed with ATHLET-CD, the bundle was heated to a temperature of 1230 K at the cladding of the central rod at the hottest elevation of 950 mm. This pre-oxidation phase in steam lasted 4 hours. Towards the end of this phase, the reference rod was extracted from the test bundle for determination of the oxide thickness axial distribution.
During the transient stage, the bundle was heated to a maximal temperature of 2000 K. The cladding failures were observed at temperature about 1700 K and lasted about 200 s. ... mehr

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Volltext §
DOI: 10.5445/IR/1000104951
Veröffentlicht am 16.01.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Vortrag
Publikationsdatum 22.10.2019
Sprache Englisch
Identifikator KITopen-ID: 1000104951
HGF-Programm 32.02.11 (POF III, LK 01) Auslegungsüberschreitende Störfälle
Veranstaltung 25th International QUENCH Workshop (2019), Karlsruhe, Deutschland, 22.10.2019 – 24.10.2019
Schlagwörter severe accident, B4C absorber, eutectic interaction
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