Hydriding Mechanisms and Impact on Fuel Performance
(ZIRAT5/IZNA1 STR)
The objective of this report is to provide the basic understanding of the hydrogen pickup and redistribution mechanisms involved and the impact of hydriding on fuel performance.
Corrosion Mechanism in Zirconium Alloys
(ZIRAT12/IZNA7 STR)
The intent of this report is to discuss the corrosion mechanisms and the various forms of corrosion features (uniform, nodular and shadow corrosion) in BWRs and PWRs/VVERs. This knowledge will give the possibility to implement actions to reduce corrosion..
The Effects of Zn Injection (PWRs and BWRs) and Noble Metal Chemistry (BWRs) on Fuel Performance
(ZIRAT8/IZNA3 STR)
This report reviews the experience of the impact of Zn-injection (in PWRs and BWRs) and Nobel Metal Chemical Addition (NMCA) in BWRs on fuel integrity. The report also discusses fundamentals in crud formation related to Zn-injection and NMCA.
Corrosion of Zr-Nb Alloys in PWRs
(ZIRAT9/IZNA4 STR)
The report gives an overview of the development of the Zr-Nb alloys in the nuclear industry, as well as the basic metallurgy and manufacturing of the Zr-Nb alloys. The report focuses on the out-of-reactor as well as in-reactor corrosion and hydrogen pickup performance.
Water Chemistry and CRUD Influence on Cladding Corrosion
(ZIRAT6/IZNA1 STR)
The purpose of the report is to describe the fundamentals in crud formation, transport, and deposition, in order to provide a solid basis for evaluating and analysing any fuel operational problem due to crud deposits. The ultimate purpose is to provide knowledge and insight for staff involved in the operation and materials selection in nuclear power plants, in order to prevent the occurrence of any crud-related fuel problems.
Corrosion of Zirconium Alloys
(ZIRAT7/IZNA2 STR)
The microstructure in the Zr-Nb alloys have crucial impact on the material performance in-reactor. The microstructure is a function of material chemistry and the manufacturing process. This report provides an overview of Zr alloy manufacturing process and relationship between fabrication, microstructure and in-pile performance.
Impact of Manufacturing Changes on Zr Alloy In-Pile Performance
(ZIRAT14/IZNA9 STR)
The microstructure in the Zr-Nb alloys have crucial impact on the material performance in-reactor. The microstructure is a function of material chemistry and the manufacturing process. This report provides an overview of Zr alloy manufacturing process and relationship between fabrication, microstructure and in-pile performance.
Manufacturing of Zirconium Alloy Material
(ZIRAT11/IZNA6 STR)
Manufacturing of Zr-Nb Alloys
(ZIRAT11/IZNA6 STR)
The report covers the impact of manufacturing on microstructure and in-reactor performance of Zr-Nb alloys. The report was co-authored by Russian scientists involved in the development of the Russian Alloys E110, E635 and E125.