Status and development trends of fuel management in light water reactors
Description
Fuel management over annual cycles and with proven loading strategies has attained a high degree of reliability over many years of operation, both with respect to the cycle lengths calculated in advance and to power density distributions. However, problems beyond this framework are now emerging which mean more advanced fuel element loading strategies, the move towards extended operating cycles, the change to higher fuel burnups, and the use of plutonium mixed oxide fuel elements. The aggregate basis of experience accumulated to date constitutes an impressive foundation on which to solve these problems. Implementing these projects affects not only the design of fuel elements and their in-pile behaviour, but also influences the operating and accident behavior of plants through the reactivity coefficients and the control rod effectiveness. (orig.)
Abstract (German)
In langjaehriger Praxis haben sich bestimmte Brennelement-Einsatz- und Nachladeschemata fuer die Realisierung von Jahreszyklen bis zu heute ueblichen Abbraenden hervorragend bewaehrt. Die Auswertung der gesammelten Erfahrungen hat Wege zu einer verbesserten Kernbrennstoffausnutzung in Leichtwasserreaktoren gewiesen, wobei neue Beladestrategien, verlaengerte Betriebszyklen und hoehere Abbraende die Ausrichtung der Entwicklungslinien bestimmen. Daneben gewinnt auf mittlere Sicht der Einsatz von MOX-Elementen in Leichtwasserreaktoren an Bedeutung. Diese Neuerungen, die z.T. seit Jahren erprobt werden, bilden das Geruest der Weiterentwicklung der Kernenergienutzung zu hoeherer Effektivitaet im Vor-Brueter-Stadium. (orig.)Additional details
Additional titles
- Original title (German)
- Stand und Entwicklungstendenzen der BE-Einsatzplanung in Leichtwasserreaktoren
Publishing Information
- Journal Title
- Atomwirtsch., Atomtech.
- Journal Volume
- 28
- Journal Issue
- 3
- Series
- CODEN: AWAKA.;Atomwirtsch., Atomtech.
- Journal Page Range
- 130-136
- ISSN
- 0365-8414
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 14779974
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- BURNUP; CONFIGURATION; FUEL ELEMENTS; FUEL MANAGEMENT; HOT CHANNEL FACTOR; HOT SPOT FACTOR; PLANNING; PLUTONIUM RECYCLE; REACTOR CORES; REACTOR FUELING; WATER COOLED REACTORS; WATER MODERATED REACTORS
- Descriptors DEC
- FUEL CYCLE; MANAGEMENT; NUCLEAR MATERIALS MANAGEMENT; REACTOR COMPONENTS; REACTORS