Lesson 10.01.01: PIA Program Flashcards
When and why was the PIA Technician skill set created?
Formed in the 1990’s as a result of industry requirements (specifically governmental regulatory compliance)
Prior to PIA, NDE companies were contracted to perform ___ ___ ___ on pipelines (MT, UT, or RT)
simple maintenance NDE
When determining SCC what points are taken into account?
- Geographical/ Physiographic regions along the pipeline ROW
- Soil Type and Composition
- Soil and Ground Water pH
- Cathodic Protection Along Pipeline
- Type and Condition of Pipeline Coating
- Type, Density, Distribution, of Corrosion Deposits
In order to perform PIA NDE Technicians were trained to measure and document:
- Dig/Anomaly Site Location
- Geographical and Topographical Information
- Cathodic Protection, Soil Resistivity, pH, and Temperature
- Soil and Coating Samples
- Pipe Wall Anomalies (scc, corrosion, dents, gouges, etc.)
- Buff Stress Risers
- Report Information to Clients
- Perform Final assessment of Repairs and Recoat
PIA Technicians have learned Advanced Pipe Assessment Techniques such as:
- UT Shear Wave
- Laser Profilometry Tools
- TOFD
- Phased Array
- IWEX
- Automated UT
- Automated Indentation
- Optical Emission
- Spectroscopy
- Hardness Measurements
- In-Site Metallography
Gas pipelines have about ___ failure(s) per ___ per ___ miles
1, year, 1000
What does ILI stand for?
In-Line Inspection
What does an ILI tool measure?
- Anomaly Info and Location
- Anomaly Size, Extent, Location, and Date
What are the types of direct assessments?
- ECDA
- ICDA
- SCCDA
- CP
What factors are used as a basis for pipeline inspection?
- MAOP/MOP
- Operating history of pipeline
- Failure history of pipeline
- Pipe vintage
- Seam type
- Coating type
- Soil moisture and drainage conditions
- Topography
A PIA Technician is expected to:
- Verify the excavation site location
- Photograph and record the physiographic, topographical, and excavation information
- Record soil type and drainage information
- Check for coating damage
- Collect samples as requested by the client
- Photograph and record coating condition, coating anomalies, and corrosion deposits
What are the steps of performing an anomaly evaluation (as requested by the client)
- Visual anomaly evaluation
- Perform MT
- Perform UT
- Perform any and all Advanced UT, Laser Profilometry or other techniques
- Photograph and record the anomaly data
What are the common evaluation repair types?
- Recoat and backfill
- Buffing to removal and recoat
- Pressure Reinforcing Sleeves (Type A)
- Pressure Containing Sleeves (Type B)
- Pipe joint segment cut out and replaced
What are Type A pipe sleeves?
Pressure Reinforcing Sleeves
What are Type B pipe sleeves?
Pressure Containing Sleeves
