Phased Array Ultrasonic Inspection (PAUT) Internal Corrosion and Lamination Mapping
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Summary: This course is to teach the technician how to set up, scan, and interpret data collected by the Hydroform Immersion Scanning system. Using linear 0° PAUT, scan a section of pipe for internal metal loss (corrosion/erosion), while checking for ID connected anomalies.
Location: Various
Course Duration: 40 hours
Maximum number of students: 4
Candidate Prerequisites: Certification in at least one of the following:
- UT Level II or III
- PAUT Level I, II, or III
- Hydroform Immersion Probe
- Encoded scanner for Hydroform
- Tomoview or OmniPC software
- Reporting system
- PAUT Principles Review
- What is PAUT?
- Linear scanning and focusing
- Hydroform Limitations
- Linear focusing
- No Focusing in “Y” direction
- Data Management
- Procedure Review
- Client Specific
- Acceptance and Rejection Criteria
- Burst Pressure Calculations
- Calibration and Setup for Internal Pipe Wall Inspection
- Equipment Selection
- Calibrating
- Scanner setup
- Encoder Calibration
- Using “I” Gate
- Ultrasonic Settings
- Setting “X” and “Y” Encoders
- Scanning
- Identify areas of interest
- Moving the scanner around the pipe
- Guidance Markup
- Scan length
- Shifting and aligning the Navic
- Water control and re-use
- Assessing the Scan Data
- Checking for gate placement
- Checking for lost lines of data
- Checking Start and End of Scan
- Identifying causes of lost data
- Data Interpretation
- Signal Interpretation
- Measuring defect length
- Measuring Defect Through-wall Height
- Measuring Defect Depth
- Identifying ID Connected Defects
- Generating Report in Omni PC or Tomoview
- Data conversion/transfer to “.csv” file
- Challenges of Field ERW Inspection
- Surface Condition
- Location of Longseam
- Ditch, Hoarding, Weather Challenges
- Data Storage and Transfer
- Written and Practical Exam
- Technique Review
- Scan Analysis
- Scan pipe of various diameters and wall thicknesses for internal anomalies
- Set up Omniscan to gather data required
- Determine when the scan data is appropriate
- Interpret scan data
- Identify types of anomalies
- Identify Corrosion vs. Laminations
- Report findings to Pipeline Owners
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