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IAEA project aims to develop polymer irradiation model
The International Atomic Energy Agency has launched a new coordinated research project (CRP) aimed at creating a database of polymer-radiation interactions in the next five years with the long-term goal of using the database to enable machine learning–based predictive models.
Radiation-induced modifications are widely applicable across a range of fields including healthcare, agriculture, and environmental applications, and exposure to radiation is a major factor when considering materials used at nuclear power plants.
David J. Diamond, Hsiang-Shou Cheng
Nuclear Technology | Volume 46 | Number 3 | December 1979 | Pages 493-499
Technical Paper | Nuclear Power Reactor Safety / Reactor | doi.org/10.13182/NT79-A32357
Articles are hosted by Taylor and Francis Online.
The effect of steam voids and control rods on the Doppler feedback and of bypass voids on the total void feedback has been calculated for a gadolinia-shimmed boiling water reactor. Calculations were done using a point model, i.e., feedback was expressed in terms of reactivity coefficients determined for individual four-bundle configurations and then appropriately combined to yield reactor results. For overpower transients, the inclusion of the void effect will make the Doppler feedback stronger. The effect of control rods is to reduce Doppler feedback. For overpressurization transients, the inclusion of the effect of bypass void will increase the reactivity due to void collapse.