On-site Gamma-ray Spectroscopic Measurements of Fission Gas Release in Irradiated Nuclear Fuel
2007 (English)In: Applied Radiation and Isotopes, ISSN 0969-8043, E-ISSN 1872-9800, Vol. 65, no 1, 36-45 p.Article in journal (Refereed) Published
An experimental, non-destructive in-pool, method for measuring fission gas release (FGR) in irradiated nuclear fuel has been developed. Using the method, a significant number of experiments have been performed in-pool at several nuclear power plants of the BWR type. The method utilises the 514 keV gamma-radiation from the gaseous fission product Kr-85 captured in the fuel rod plenum volume. A submergible measuring device (LOKET) consisting of an HPGe-detector and a collimator system was utilised allowing for single rod measurements on virtually all types of BWR fuel. A FGR database covering a wide range of burn-ups (up to average rod burn-up well above 60 MWd/kgU), irradiation history, fuel rod position in cross section and fuel designs has been compiled and used for computer code benchmarking, fuel performance analysis and feedback to reactor operators. Measurements clearly indicate the low FGR in more modern fuel designs in comparison to older fuel types.
Place, publisher, year, edition, pages
2007. Vol. 65, no 1, 36-45 p.
FGR database, fission gas release (FGR), fuel performance, fuel design, gamma-ray spectroscopy, krypton, LOKET
IdentifiersURN: urn:nbn:se:uu:diva-94564DOI: 10.1016/j.apradiso.2006.07.004ISI: 000242678800007OAI: oai:DiVA.org:uu-94564DiVA: diva2:168452