PA UT (PAUT): Annular Rings

ISONIC EXPERT A-RING software application was created for the inspection of annular ring – critical zone and fillet Weld area in the above ground storage tanks for corrosion damages. The scanning is performed above the top surface of the protrusion (outer chime) and there is no need in emptying of the tank (in-service inspection)

Distinguishing and sizing of the following imperfections is provided:
  • Scattered corrosion at the product side in the critical zone, tank shell and fillet weld areas of the annular ring
  • Scattered corrosion at the soil side in the critical zone, tank shell and fillet weld, protrusion areas of the annular ring
  • Compact damages (pitting, etc) at the product side in the critical zone, tank shell and fillet weld areas of the annular ring
  • Compact damages (pitting, etc) at the soil side in the critical zone, tank shell and fillet weld, protrusion areas of the annular ring
  • Loss of fillet weld metal at the product side
  • Cracks and other defects inside fillet weld metal



PDF Brochure

The ISONIC EXPERT A-Ring inspection software option is available for the ISONIC 3510, ISONIC 2010, and ISONIC 2009 UPA Scope instruments and featured with:
  • Multiple skip shear wave True-To-Geometry Sector-Scan Cross Sectional Coverage and Imaging of the Annular ring critical zone and Fillet weld areas - Cross Sectional and Top (C-Scan)- / Side- / End- View and 3D
  • Intuitive Image Guided PA Pulser Receiver with Beam Forming View
  • Intuitive Image Guided PA Pulser Receiver with Beam Forming View
  • DAC / TCG Normalization
  • Built-In Annular Ring Fillet Weld Area Geometry Editor and Ray Tracer - Scanning Pattern (Scan Plan) Design
  • Built-In Fillet Weld / Annular Ring Geometry Editor and Ray Tracer - Scanning Pattern (Scan Plan) Design
  • Independent on TCG Angle Gain Compensation / Gain Per Focal Law Correction
  • Automatic Coupling Monitor
  • Encoded and Time based C-Scan
  • 100% Raw Data Capturing
  • FMC/TFM Protocol for the data acquisition and imaging
  • Automatic Defects Alarming Upon C-Scan Acquisition Completed
  • Automatic Creation of Editable Defects List
  • Comprehensive Postrpocessing Including:
    • Recovery and Evaluation of Captured A-Scans from the Recorded Cross Sectional Views (Sector Scan) and C-Scans
    • Recovery of Cross Sectional Views from the Recorded C-Scans
    • Converting Recorded C-Scans or their Segments into 3D Images
    • Off-Line Gain Manipulation
    • Off-Line DAC to TCG / TCG to DAC toggling for all types of stored files (A-Scans, cross-sectional views, C-Scans, etc)
    • Off-Line DAC Normalization of the Recorded Images / DAC Evaluation
    • Numerous Filtering / Reject Options ( by Geometry / Position / By Amplitude / dB-to-DAC / etc )
    • Defects Sizing including the Quantitative Evaluation of the Thickness Loss
    • Creation of Defect List and Storing it Into a Separate File
    • Automatic creating of inspection reports - hard copy / PDF File
The True-To-Geometrycoverage and imaging allows easy distinguishing between the defects in the annular ring plates and in the fillet welds, which may the allowable incomplete penetration; the damages situated on the upper and bottom surface of the plate are surely distinguished as well

The movies below illustrate the inspection of the critical zone of the annular ring plate (the fillet weld area continued to up to 100 mm / 4 inch inside the tank) with use of ISONIC 3510 instrument utilizing either manual or automated scanning



















The movie below illustrates the instrument screen (ISONIC 2010) whilst performing scanning of the sample of the annular ring plate with the fillet weld including:

  • A-Scan Calibration (Calibration of the PA Pulser Receiver)
  • Entering the Fillet Weld / Annular Ring Plate Geometry and Beam Tracing
  • Coupling Monitor Calibration
  • Cross-Sectional View Inspection
  • Scanning Along the Shell with C-Scan Capturing
  • Postrpocessing including 3D-Viewing



    • The video below illustrates the data analysis and interpretation for the record made for a segment of annular ring with real defects



    Inspection of the critical zone is a part of the complete solution based on the scanning above the protrusion surface; the complete solution is shown in the videos below:





    Note: In order to accelerate the data stream the videos above are linked to the Youtube. In case the YouTube may not be accessed from your location please use the links below


    DOWNLOAD AND PLAYBACK THE EXEMPLARY INSTRUMENTS FILES

    The archive comprices some Exemplary Instrument Files for this application

    The files should be extracted from the archive and played in the regular PC running under Win'XP, 7, 8, 10 with use of the freely distributable ISONIC PA Office software package