The kinetics of hydrogen desorption from and adsorption on zirconium hydride

Terrani, Kurt A.; Balooch, M.; Wongsawaeng, Doonyapong; Jaiyen, Sarawut; Olander, D.R.

doi:10.1016/j.jnucmat.2009.12.008

Cited by 64 publications

(42 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Using hydrogenated material such as zirconium hydride (ZrH 2 ) as moderator highly increases the allowable area as it can be seen in Figure 3. However, this may lead to a safety concern in case of unprotected transients during which dissociation can occur [19]. For exhaustiveness and when necessary, we will consider the following two cases : one with ZrH 2 use and one without.…”

Section: Outline Of the Optimization Approach Consideredmentioning

confidence: 99%

Analysis and optimization of minor actinides transmutation blankets with regards to neutron and gamma sources

Kooyman

Buiron

Rimpault

2017

EPJ Nuclear Sci. Technol.

View full text Add to dashboard Cite

Abstract. Heterogeneous loading of minor actinides in radial blankets is a potential solution to implement minor actinides transmutation in fast reactors. However, to compensate for the lower flux level experienced by the blankets, the fraction of minor actinides to be loaded in the blankets must be increased to maintain acceptable performances. This severely increases the decay heat and neutron source of the blanket assemblies, both before and after irradiation, by more than an order of magnitude in the case of neutron source for instance. We propose here to implement an optimization methodology of the blankets design with regards to various parameters such as the local spectrum or the mass to be loaded, with the objective of minimizing the final neutron source of the spent assembly while maximizing the transmutation performances of the blankets. In a first stage, an analysis of the various contributors to long-and short-term neutron and gamma source is carried out whereas in a second stage, relevant estimators are designed for use in the effective optimization process, which is done in the last step. A comparison with core calculations is finally done for completeness and validation purposes. It is found that the use of a moderated spectrum in the blankets can be beneficial in terms of final neutron and gamma source without impacting minor actinides transmutation performances compared to more energetic spectrum that could be achieved using metallic fuel for instance. It is also confirmed that, if possible, the use of hydrides as moderating material in the blankets is a promising option to limit the total minor actinides inventory in the fuel cycle. If not, it appears that focus should be put upon an increased residence time for the blankets rather than an increase in the acceptable neutron source for handling and reprocessing.

show abstract

Section: Outline Of the Optimization Approach Consideredmentioning

confidence: 99%

Analysis and optimization of minor actinides transmutation blankets with regards to neutron and gamma sources

Kooyman

Buiron

Rimpault

2017

EPJ Nuclear Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Ориентируемся для определенности на до-статочно подробные описания условий экспе-риментов и данные по сплавам с высокой водо-родопроницаемостью на основе металлов 5-й группы, в частности ванадия, представленные в публикациях [1,5,11,16,18,19,22,30]. Фиксируем T = 673 K, = 0.05 см, µ(T ) = 2.474 × 10 22 / √ T 1 H2 /(торр см 2 с), D = 2 × 10 −5 см 2 /с, Γ = 2 × 10 20 1 H /(см 3 √ торр), Φ = DΓ = 4 × 10 15 1 H /(см с √ торр).…”

Section: численное моделирование прорываunclassified

Parametric identification algorithm of hydrogen fast permeability model

Заика¹,

Rodchenkova²,

Zaika

2017

Proceedings of KarRC of RAS

View full text Add to dashboard Cite

“…Many macroscopic properties of metals and their alloys depend on hydrogen, which is a common impurity found in structural materials after their usage [3][4][5][6][7][8]. Hydrogen can cause phase transformations leading to hydride formation [9][10][11][12][13][14][15][16], interactions with structural defects modifying the plastic activity of materials [17], the interplay with point defects provoking swelling [18][19][20][21], or so-called hydrogen embrittlement. It makes the development of methods for the protection of zirconium alloys from penetration of hydrogen significant.…”

Section: Introductionmentioning

confidence: 99%

Glow Discharge Optical Emission Spectrometer Calibration Using Hydrogenated Zr-2.5Nb Alloy Standard Samples

Priamushko¹,

Mikhaylov²,

Babikhina³

et al. 2018

Metals

View full text Add to dashboard Cite

Abstract:Currently, standard samples of hydrogen-metal systems meeting the requirements of glow discharge optical emission spectrometers (GD-OES) are not available on the market. This article describes the preparation of Zr-Nb-H standard samples and the calibration of GD-OES with the usage of these samples. Samples of Zr-2.5Nb were chosen as the material for sample production. The creation procedure includes five main steps: sample preparation (polishing to an average roughness, Ra, of 0.04 m using sandpaper), annealing, hydrogenation, maintenance in an inert gas atmosphere, and characterization of the samples. The absolute hydrogen concentration in the samples was determined volumetrically and calculated from the weight change. The distribution of hydrogen was studied using GD-OES Profiler 2 by Jobin Yvon Emission Horiba Group. As a result of this work, calibration curves of Zr, H, Nb, O, and other elements were obtained. The calibration errors were in the range of 1-5%.

show abstract

The kinetics of hydrogen desorption from and adsorption on zirconium hydride

Cited by 64 publications

References 16 publications

Analysis and optimization of minor actinides transmutation blankets with regards to neutron and gamma sources

Analysis and optimization of minor actinides transmutation blankets with regards to neutron and gamma sources

Parametric identification algorithm of hydrogen fast permeability model

Glow Discharge Optical Emission Spectrometer Calibration Using Hydrogenated Zr-2.5Nb Alloy Standard Samples

Contact Info

Product

Resources

About