PREDICTION OF A NEUTRON FLUENCE BY AN ULTRASONIC MEASUREMENT IN AN IRRADIATED MATERIAL USED FOR SURVEILLANCE TESTING OF AN OPERATING REACTOR
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The ultrasonic attenuation versus neutron fluence relationship from Charpy impact test specimens withdrawn from an operating reactor vessel during plant outages has been evaluated in order to predict the neutron fluence through a direct attenuation measurement for a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.
1990 ◽
1993 ◽
2013 ◽
Vol 30
(12)
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pp. 1500-1505
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2021 ◽
Vol 1091
(1)
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pp. 012023
2013 ◽
Vol 486
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pp. 283-288
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2004 ◽
Vol 41
(3)
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pp. 247-251