Home / Store / Journals / Electronic Articles / Nuclear Technology / Volume 92 / Number 3
Brent J. Lewis, Roderick D. MacDonald, Hugues W. Bonin
Volume 92 / Number 3 / December 1990 / Pages 315-324
Format:electronic copy (download)
Data from a single defected fuel element operating in-reactor are used to develop a physically based model for describing the increased release of iodine and noble gas fission products to the primary coolant following a reactor shutdown and start-up. Iodines are only released on reactor shutdown, whereas both species are observed on start-up. A dependence on the decay constant of λ-3/2 is typically observed for these transient releases, indicative of a source of release from fuel cracking with little holdup due to transport in the fuel-to-sheath gap.
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