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Board notification BN-81-40 re integrity of reactor pressure vessels when subj to thermal shock & subsequent repressurization during overcooling transient.Forwards NRC 811030 ltr re ORNL rept on pressurized thermal shock.

Accession Number: ML19252B719

Date Released: Thursday, October 24, 2024

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• ML20038C425 - Board notification BN-81-40 re integrity of reactor pressure vessels when subj to thermal shock & subsequent repressurization during overcooling transient.Forwards NRC 811030 ltr re ORNL rept on pressurized thermal shock. (3 page(s), 11/16/1981)
• ML19252B718 - Comments on ORNL evaluation of threat to PWR vessel integrity posed by pressurized thermal shock pressure. Evaluation contains significant deficiencies in area of thermal-hydraulic conditions.Detailed comments encl. (18 page(s), 10/20/1981)