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Keywords: high burnup
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eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7737-6
... A full understanding of fuel cladding performance is critical to enabling the safe and flexible operation of fuel rods to high burnups in high-duty nuclear power plants (NPPs). Several European pressurized water reactors (PWRs) are by design challenging to the fuel because they achieve high...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2021
ISBN: 978-0-8031-7690-4
... uptake change. In many alloys, they increase at high burnups. The causes of this change in behavior with irradiation are still debated. Although most aspects of this topic are examined, the full picture is not yet portrayed. In the frame of a project running at PSI, different alloys irradiated in two...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2018
ISBN: 978-0-8031-7641-6
... for regulatory application; (4) promote a better understanding of phenomena that appear in high-burnup regions and MOX fuels, such as rim effect and an effect of plutonium agglomerates in MOX fuels, and to evaluate those effects on fuel behavior in accident conditions; and (5) to assess fuel behaviors...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2018
ISBN: 978-0-8031-7641-6
... elements, such as iron and nickel, within the oxide layers as a function of distance from the oxide-metal interface at high burnup. Samples were chosen for comparison based on having similar oxide thicknesses, processing, elevation, reactors, and fluences but different hydrogen pickup fractions...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2015
ISBN: 978-0-8031-7529-7
... to access the metal. These results will be discussed as a contribution to the available knowledge about hydrogen uptake and will provide a global support for the models of the uptake phenomenon. hydrogen content oxidation irradiation effects high burnup TEM EPMA SIMS ZIRCONIUM IN THE NUCLEAR...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2015
ISBN: 978-0-8031-7529-7
... Optimized ZIRLO™ cladding has been exposed to burnup levels exceeding 70 GWd/MTU, significantly higher than the licensed burnup in the United States of 62 GWd/MTU, in an effort to evaluate the performance margins of Optimized ZIRLO cladding during irradiation to high burnups. Extensive poolside...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2012
ISBN: 978-0-8031-7515-0
... Two major high burnup boiling water reactor (BWR) issues today are (1) shadow corrosion (hydrogen) induced fuel channel bowing and (2) accelerated hydrogen pickup fraction, HPUF of fuel claddings. Both these issues occur only at high burnups. Several factors impact the tendency for fuel channel...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2012
ISBN: 978-0-8031-7515-0
... A high burnup boiling water reactor fuel rod was subjected to reactivity initiation accident (RIA) tests in a research reactor. Two ramp tests were carried out under almost identical irradiation conditions, resulting in cladding failure in a room temperature test, while no failure was observed...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2009
ISBN-10: 0-8031-4514-4
ISBN: 978-0-8031-4514-6
... Sufficient mechanical ductility of high-burnup Zircaloy-4 fuel cladding is important to prevent large-opening ruptures and significant fuel dispersal during postulated in-reactor and spent-fuel processing accidents. The effect of irradiation, oxidation, and hydriding at high fuel burnup may...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2009
ISBN-10: 0-8031-4514-4
ISBN: 978-0-8031-4514-6
... The hydride stress reorientation behavior and the mechanical properties of irradiated cladding tubes were investigated to evaluate the high-burnup fuel-cladding tube properties in interim dry storage. As for the boiling water reactor (BWR) Zircaloy-2 (Zry-2) cladding, the hydride reorientation...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2005
ISBN-10: 0-8031-3493-2
ISBN: 978-0-8031-0756-4
... these results, it is suggested that increasing the initial particle size and/or controlling the alloy chemistry would be beneficial to improve the uniform corrosion performance and to lower hydrogen pickup, especially at very high fluences. Zr-based alloys BWR corrosion high burnup microstructure...