Field Evaluations of Low-Frequency SAFT-UT on Cast Stainless Steel and Dissimilar Metal Weld Components

Diaz, Aaron A. ; Harris, R. V. ; Doctor, Steven R.

Pacific Northwest National Laboratory (U.S.)

关键词: Epri;    Ultrasonic Testing;    Saft-Ut;    Cast Stainless Steel;    Low Frequency;   

DOI  :  10.2172/1049029
RP-ID  :  PNNL-14374
RP-ID  :  AC05-76RL01830
RP-ID  :  1049029

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report documents work performed at the Pacific Northwest National Laboratory (PNNL) in Richland, Washington, and at the Electric Power Research Institute's (EPRI) Nondestructive Examination (NDE) Center in Charlotte, North Carolina, on evalutating a low frequency ultrasonic inspection technique used for examination of cast stainless steel (CSS) and dissimilar metal (DMW) reactor piping components. The technique uses a zone-focused, multi-incident angle, low frequency (250-450 kHz) inspection protocol coupled with the synthetic aperture focusing technique (SAFT). The primary focus of this work is to provide information to the United States Nuclear Regulatory Commission on the utility, effectiveness and reliability of ultrasonic testing (UT) inspection techniques as related to the inservice ultrasonic inspection of coarse grained primary piping components in pressurized water reactors (PWRs).