Methods for ultrasonic testing and specifying quality grades of ferritic steel plate

The paper presents the results of residual stress measurements on a ferritic steel plate containing a repair weld. The repair was considered representative of that found in the secondary circuit piping in power plant. The paper primarily uses the deep hole drilling (DHD) technique, but compares results found by this technique with those obtained using neutron diffraction. Both sets of measurements confirmed that highly tensile residual stresses exist in the repair weld. The two measurement techniques produced results that were in acceptable agreement, but the neutron diffraction results were consistently higher than the deep hole drilling results. It was thought this was due to the use of a constant stress-free lattice parameter d0 .

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Specification for acceptance levels for internal imperfections in steel plate, strip and wide flats, based on ultrasonic testing

10.3403/00309375 ◽

1993 ◽

Keyword(s):

Ultrasonic Testing ◽

Steel Plate ◽

Plate Strip ◽

Acceptance Levels

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Using Phased Array Ultrasonic Testing in Lieu of Radiography for Acceptance of Carbon Steel Plate Welds

Volume 5: High-Pressure Technology; ASME NDE Division; 22nd Scavuzzo Student Paper Symposium and Competition ◽

10.1115/pvp2014-28832 ◽

2014 ◽

Author(s):

Traci L. Moran ◽

Michael T. Anderson ◽

Anthony D. Cinson ◽

Susan L. Crawford ◽

Matthew S. Prowant ◽

...

Keyword(s):

Carbon Steel ◽

Ultrasonic Testing ◽

Nuclear Power ◽

Phased Array ◽

Steel Plate ◽

National Laboratory ◽

Pacific Northwest National Laboratory ◽

Nuclear Regulatory Commission ◽

Incomplete Fusion ◽

Replacement Method

The Pacific Northwest National Laboratory (PNNL) is conducting studies for the U.S. Nuclear Regulatory Commission (NRC) to assess the capability, effectiveness, and reliability of ultrasonic testing (UT) as a replacement method for radiographic testing (RT) for volumetric examination of nuclear power plant (NPP) components. This particular study focused on evaluating the use of phased-array (PA) UT on carbon steel plate welds. Welding fabrication flaws included a combination of planar and volumetric types; for example, incomplete fusion, lack of penetration, cracks, porosity, and slag inclusions. The examinations were conducted using PAUT techniques applied primarily for detection and flaw type characterization. This paper will discuss the results of using PAUT in lieu of RT for detection and classification of fabrication flaws in carbon steel plate welds.

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