Piping Inspection - tankref.dktankref.dk/onewebmedia/B5. Force - Piping inspection and...
Transcript of Piping Inspection - tankref.dktankref.dk/onewebmedia/B5. Force - Piping inspection and...
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Piping Inspection Process piping – codes, inspection, testing methods, CMLs
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Codes to be used and what they cover:
• API 570: In-service Inspection, Rating, Repair, and Alteration of Piping Systems • API 574: Inspection Practices for Piping System Components • API 580: Risk-based Inspection • API 2611: Terminal Piping Inspection • ASME B31.3: Process Piping • ASME PCC-2: Repair of Pressure Equipment and Piping
Inspection Codes:
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Inspection methods
External Visual Inspection Performed to: Pros: Cons:
• External condition • Insulation system • Painting/coating system • Sign of misalignment • Leakage
Determine critical areas Only visible defects
Evaluate outside corrosion
Evaluate depth of pits
Dislodged support
Expansion joints
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Thickness Measurements
Performed to: Pros: Cons:
Simple to use Only small areas
Lightweight equipment Cannot scan on corrosion
Can detect backside corrosion Not usable for small pipe sizes
Ultrasonic Examination (manual ultrasonic)
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Thickness Measurements
Performed to: Pros: Cons:
Insulation can remain intact Using of X-rays
Small pipe connections Sealing off is necessary
Visual record
Digital Radiography
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Screening method
Performed to: Pros: Cons:
Fast screening method Inaccurate
Underground / insulated piping Distance depends on many factors
Long Range (Guided Wave inspection)
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Scan of flanges
• In-service scanning of flanges
Phased Array 3D
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Other inspection techniques
• Internal visual inspection • Pressure tests • Thermographic inspection
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CML – Condition Monitoring Locations
Examples of selected points as CML
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Examples of damages
CUI – Corrosion Under Insulation
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Examples of damages
Inside corrosion
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Examples of damages
Misalignments
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Examples of damages
Soil-to-air contact – Non creative solutions
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Further information at forcetechnology.com