Determination of IRT-2M fuel burnup by gamma spectrometry

Koleška, Michal; Viererbl, L.; Marek, M.; Ernest, J.; Šunka, Michal; Vinš, M.

doi:10.1016/j.apradiso.2015.10.001

Cited by 15 publications

(2 citation statements)

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“…In case of 140 La measurement, the reference time is set to transient equilibrium between 140 Ba and 140 La. This correction is applicable only when the photons of the analysed peak, emitted during the decay, occur in the sample [4,5,6]. Observed photons can also be extracted in case of mixed peak [7].…”

Section: Fission Rates Measurementmentioning

confidence: 99%

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Determination of power density in VVER-1000 Mock-Up in LR-0 reactor

et al. 2017

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Abstract. The pin power density is an important quantity which has to be monitored during the reactor operation, for two main reasons. Firstly, it is part of the limits and conditions of safe operation and, secondly, it is source term in neutron transport calculations used for the adequate assessing of the state of core structures and pressure vessel material. It is often calculated using deterministic codes which may have problems with an adequate definition of boundary conditions in subcritical regions. This may lead to overestimation of real situation, and therefore the validation of the utility codes contributes not only to better fuel utilization, but also to more precise description of radiation situation in structural components of core. Current paper presents methods developed at LR-0 reactor, as well as selected results for pin power density measurement in peripheral regions of VVER-1000 mock-up. The presented data show that the results of a utility diffusion code at core boundary overestimate the measurement. This situation, however satisfactory safe, may lead to unduly conservative approach in the determination of radiation damage of core structures.

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Section: Fission Rates Measurementmentioning

confidence: 99%

“…This criterion has to be met also in the cases with different spectra, especially near baffle or control rods [1,2,3]. Gamma spectroscopy is suitable also for burnup determination [4].…”

Section: Introductionmentioning

confidence: 99%