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Progress on Pellet–Cladding Interaction and Stress Corrosion Cracking

Experimentation, Modelling and Methodologies Applied to Support the Flexible Operation of Nuclear Power Plants

Report of a Technical Meeting

IAEA-TECDOC-1960

English IAEA-TECDOC-1960 | 978-92-0-116521-3

312 pages | 13 figures | € 18.00 | Date published: 2021

Download PDF (13.08 MB)

Description

Flexible operation and related power changes can have a direct impact on fuel integrity through pellet–cladding interaction/stress corrosion cracking (PCI/SCC) phenomena, which could lead to fuel failures in certain conditions. For some anticipated operational occurrences that affect fuel with small PCI/SCC margins, the fuel failures caused by PCI/SCC cannot be assumed to be benign, and a significant radiological source term may be generated. This publication provides an overview of PCI/SCC studies and reports on the progress made since the early 2000s, based on presentations and discussions at a related IAEA technical meeting held in October 2019.

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Keywords

Pellet-Cladding, Interaction, Stress, Corrosion, Cracking, Technical Meeting, Experimentation, Modelling, Methodologies, Flexible, Operation, NPP, Nuclear Power Plant, PCI, Pellet-Cladding Interaction, SCC, Stress Corrosion Cracking, Fuel Failure, Radiological Source, PCI-SCC, Reactor Core, Design, Implementation, Optimization, Operating Condition, Design Methodology, Cladding Failure, Corrosive Environment, Flexible Power, Licensing, Reactor Operation, Simulation, Model, Design Verification, Verification, Validation

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