PREDICTION OF A NEUTRON FLUENCE BY AN ULTRASONIC MEASUREMENT IN AN IRRADIATED MATERIAL USED FOR SURVEILLANCE TESTING OF AN OPERATING REACTOR

Author:

LEE SAMLAI1

Affiliation:

1. Reactor Integrity Surveillance Lab., Korea Atomic Energy Research Institute, 150 Dukjindong, Yusonggu, Daejeon, Korea

Abstract

The ultrasonic attenuation versus neutron fluence relationship from Charpy impact test specimens withdrawn from an operating reactor vessel during plant outages has been evaluated in order to predict the neutron fluence through a direct attenuation measurement for a reactor vessel material irradiated by neutrons. The results showed that systematic relationships for the ultrasonic attenuation versus neutron fluence at specific operating frequencies were observed for the base and weld metal and the possibility to predict neutron fluence in a specimen, that has no information on the amount of neutron fluence, by using such a consistent relationship.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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