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NDT Inspection on High Pressure Pipeline Downstream of Compressor Stations


Location:
Fasialabad, Pakistan
Client:
Sui Northern Gas Pipeline Limited (SNGPL)
Region:
South Asia
Services:
NDT Inspection on High Pressure Pipeline Downstream of Compressor Stations
OBJECTIVE

To carry out the following NDT techniques on following segments of Pipeline operated by SNGPL in Faisalabad Region

  • 18” Dia Main Line, AC-7 / AV-38
  • 24” Dia Main Line, AC-7 / AV-38
  • 16” Dia Loop Line, A-11 / BV-3
  • 16” Dia Loop Line, A-11 / CV-4
  • 16” Dia Loop Line, BC-1 / B-2
Scope of Work

The corrosion department of SNGPL proposed to assess the integrity status of its pipelines segments downstream of compressor stations by utilizing the following NDT Techniques:

  • Ultrasonic Thickness (UT) Gauging along with Corrosion Mapping for internal corrosion loss
  • Magnetic Particle Inspection (MPI) for Stress Corrosion Cracking (SCC)
  • In-Situ Metallographic Testing at selected points
Deliverables

VISP provided a comprehensive report at completion of project with three hard copies along with one electronic copy of reports. The final report included the following deliverables:

  • Inspection findings: defects and deviations
  • Remedial actions to be undertaken for the redress of the same and guidelines to improve the ICCP monitoring and maintenance
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