Phosphorus Influence on Steels Ageing (PISA)
Project ID: FIKS-CT-2000-00080Funded under: FP5-EAECTP C
The integrity of the pressure vessel is vital to the safe operation of a nuclear reactor. It is therefore necessary to monitor or predict the changes in the reactor pressure vessel (RPV) material during operation. Exposure to irradiation (or elevated temperatures) causes the segregation of phosphorus to internal grain boundaries in RPV steels. This, in turn, encourages brittle intergranular failure of the material. The PISA programme had the objective of reducing the uncertainties associated with the impact of this failure mechanism on the properties of the RPV, both during service and at the end-of-life (EOL).
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Record Number: 8154 / Last updated on: 2006-10-17