Instant release of fission products in leaching experiments with high burn-up nuclear fuels in the framework of the Euratom project FIRST-Nuclides

被引：27

作者：

Lemmens, K. ^{[1
]}

Gonzalez-Robles, E. ^{[2
]}

Kienzler, B. ^{[2
]}

Curti, E. ^{[3
]}

Serrano-Purroy, D. ^{[4
]}

Sureda, R. ^{[5
]}

Martinez-Torrents, A. ^{[5
]}

Roth, O. ^{[6
]}

Slonszki, E. ^{[7
]}

Mennecart, T. ^{[1
]}

Guenther-Leopold, I.

Hozer, Z. ^{[7
]}

机构：

[1] Belgian Nucl Res Ctr SCK CEN, Waste & Disposal Expert Grp, Boeretang 200, B-2400 Mol, Belgium

[2] Karlsruhe Inst Technol, Inst Nucl Waste Disposal KIT INE, POB 3640, D-76021 Karlsruhe, Germany

[3] Paul Scherrer Inst, Nucl Energy & Safety Dept, Lab Waste Management, CH-5232 Villigen, Switzerland

[4] European Commiss, DG Joint Res Ctr JRC, Directorate Nucl Safety & Secur G, Dept G3, POB 2340, D-76125 Karlsruhe, Germany

[5] CTM Ctr Tecnol, Placa Ciencia 2, Manresa 08243, Spain

[6] Nuclear AB, Studsvik, S-61182 Nykoping, Sweden

[7] Magyar Tud Akad Energiatud Kutatokozpont MTA EK, POB 49, H-1525 Budapest, Hungary

来源：

JOURNAL OF NUCLEAR MATERIALS | 2017年 / 484卷

关键词：

Spent nuclear fuel; Static leaching; Instant release fraction; FIRST-Nuclides; GAS RELEASE; SOURCE-TERM; BEHAVIOR; HYDROGEN;

D O I：

10.1016/j.jnucmat.2016.10.048

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The instant release of fission products from high burn-up UO2 fuels and One MOX fuel was investigated by means of leach tests. The samples covered PWR and BWR fuels at average rod burn-up in the range of 45 -63 GWd/t(HM) and included clad fuel segments, fuel segments with opened cladding, fuel fragments and fuel powder. The tests were performed with sodium chloride bicarbonate solutions under oxidizing conditions and, for one test, in reducing Ar/H-2 atmosphere. The iodine and cesium release could be partially explained by the differences in sample preparation, leading to different sizes and properties of the exposed surface areas. Iodine and cesium releases tend to correlate with FGR and linear power rating, but the scatter of the data is significant. Although the gap between the fuel and the cladding was closed in some high burn-up samples, fissures still provide possible preferential transport pathways. (C) 2016 The Authors. Published by Elsevier B.V.

引用

页码：307 / 323

页数：17

共 59 条

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