Published December 1985 | Version v1
Report Restricted

Characteristics of the KNK II second core-- irradiation history, power tilting campaign, subassembly reloadings, failed fuel detection and burnup data (358/758 VLT), status of October 10th,1985

Creators

Description

The report gives an overview of the KNK II operation until October 10th, 1985. Additionally, the development of the second fuel pin failure, the flux tilting campaign and the failed fuel detection are described. Until October 1985 the high-burnup subassembly, which was already operated in the first core of KNK II for 400 equivalent full-power days, achieved a maximum local burnup of 161 MWd/t(HM) or 17 at.% and the subassemblies of the second core reached 53 MWd/t(HM) or 5.6 at.%. The corresponding steel displacements are 61.8 and 22.4 dpa-NRT, respectively

Availability note (English)

Available from INIS in electronic form

Abstract (German)

Der vorliegende Bericht gibt einen zusammenfassenden Ueberblick ueber den Betrieb von KNK II/2 bis zum 10.10.1985. Ausserdem werden die Entwicklung des zweiten Brennstabschadens sowie der Schieflastbetrieb und die Defektstabsuche beschrieben. Bisher wurden in dem Hochabbrandelement, das bereits 400 VLT im Erstkern betrieben worden war, ein maximaler lokaler Abbrand von 161 MWd/kg(SM) oder 17 at.% und in den Elementen des zweiten Kerns 53 MWd/kg(SM) oder 5.6 at.% erreicht. Die entsprechenden Stahl-Schaedigungsraten sind 61.8 bzw. 22.4 dpa-NRT

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Additional details

Additional titles

Original title (German)
Charakteristik der KNK II Zweitbeladung, Bestrahlungsverlauf, Elementwechsel, Schieflastbetrieb, Defektsuche und Abbranddaten (358/758 VLT), Stand 10.10.1985

Publishing Information

Imprint Pagination
40 p.
Report number
IA--54.06820.8

INIS

Country of Publication
Germany
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
34085709
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
ATOMIC DISPLACEMENTS; BURNUP; FAILED ELEMENT DETECTION; FUEL ELEMENT FAILURE; FUEL MANAGEMENT; KNK-2 REACTOR; NEUTRON FLUX TILTING; REACTOR OPERATION
Descriptors DEC
DETECTION; ENRICHED URANIUM REACTORS; EPITHERMAL REACTORS; EXPERIMENTAL REACTORS; FAILURES; FAST REACTORS; HYDRIDE MODERATED REACTORS; LIQUID METAL COOLED REACTORS; MANAGEMENT; NUCLEAR MATERIALS MANAGEMENT; OPERATION; PHYSICAL RADIATION EFFECTS; POWER REACTORS; RADIATION EFFECTS; REACTORS; RESEARCH AND TEST REACTORS; SODIUM COOLED REACTORS; SZR TYPE REACTORS

Optional Information

Notes
refs, figs, tabs
Secondary number(s)
INIS-DE-IA--003