NDE Associates, Inc. provides nondestructive
testing (NDT) inspection and Witness services for petroleum and
power industries. The company specializes in the application of advanced NDT
techniques, including phased arrays, eddy
current testing (ECT) and ultrasonic testing (UT)
Flaw Sizing by
Phased Array. High resolution phased array of a 38 mm thick weld showing
interbead lack of fusion. PA probe is GE 5 MHz, 16 x 1.5 mm
WITNESS INSPECTIONS AND THIRD PARTY
- Oversee qualification of UT in
lieu of radiography as per ASME VIII-2
- Oversee Qualification of AUT Systems
for pipeline inspection as
- Provide AUT Witness for Phased
array and TOFD inspections.
- Review NDT Procedures
Anmol Birring - NOTABLE WORK IN
- Developed ultrasonic backscatter
technique for High Temperature Hydrogen Attack. The technique has been
used world wide for HTHA inspections.
- Applied ultrasonic technique for
detection of hydrogen damage in boiler tubes and reduced the boiler forced
- 2004 - Detected Advanced levels of
HTHA in a reactor vessel in France. The vessel was immediately taken out
- Tubing Inspection - Found that flaw
sizing of ID pits with eddy current is highly dependent on frequency.
- Found during a qualification of
manual UT angle beam inspectors that inspector experience did not play a
significant role in their performance. Inspector skill level
played a major role.
- For improved flaw definition and
sizing, the phased array probe aperture plays a key role. The recommended
active aperture should be about 0.4 x weld thickness.
- TOFD of welds. The OD notch used
for TOFD calibration blocks the lateral wave provides a false sense of
coverage. To validate TOFD dead zone the TOFD calibration should include a
2 mm side drilled hole at a depth of 4 or 5 mm.
- The so called creeping waves are 75
degree longitudinal waves and have no sensitivity to surface cracks that
are more than 10 mm from probe.
- AUT Temperature qualification -
Found that AUT done on hot welds during pipe lay first misses ID root
cracks. AUT qualification should therefore always include root cracks.
- Corrosion resistant alloy (CRA)
welds with or without CRA clad are made in many configurations and the
selection of UT/PAUT technique is specific to each configuration
- UT of CRA alloy welds. Found that
ultrasonic longitudinal waves when calibrated on side drilled holes will
have 16 dB lower sensitivity on ID notches and can miss ID cracks.
NDE Associates, Inc. Mission Statement
Travel blogs by Vikram Birring - click here
Disputing credit report errors. If you have a mixup with your credit report,
for example, a credit account or a collection item for a person with a
similar name can end up on your credit report. To dispute and fix credit
report mistakes contact Sameer Birring at
www.birringlaw.com and for services
|WE SPECIALIZE IN
Anmol Birring, "Selection of Calibration Reflectors for
Corrosion Resistant Alloy (CRA) Piping"
Materials Evaluation, March 2016, p 361-366
Anmol Birring, "Ultrasonic Inspection of Welds in Corrosion
Resistant Alloy (CRA) Piping"
Materials Evaluation, December, 2014, p 1468-74
Anmol S. Birring, "Sizing Discontinuities by Ultrasonics",
Materials Evaluation, November 2010
Anmol S. Birring,
"Selection of Phased Array Parameters for Weld
Testing" Materials Evaluation, September 2008
Anmol S. Birring, "Ultrasonic
Phased Arrays for Weld Testing",
Paper Copyright by Materials Evaluation, ASNT, Columbus, Ohio