(ZIRAT7/IZNA2 STR)
This report provides the understanding of the mechanisms of dimensional instability (including irradiation creep and growth) in the aggressive environment of the nuclear core and the potential effects on fuel performance.
(ZIRAT13/IZNA8 STR)
The intent of these two reports is to discuss the basics of hydrogen, hydrides and their effect on the zirconium alloy properties in Volume I and in-pile performance during normal and accident conditions as well as dry storage in Volume II. A better understanding of the mechanisms by which hydrogen/ hydrides impacts zirconium alloy properties and in-pile performance may enable the nuclear industry to find means to reduce the harmful effects of hydrogen/hydrides on the material in-pile 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.
(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.
(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..
(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.
(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.
(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.
(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.
(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.
