NDT INSPECTION ON HIGH PRESSURE PIPELINE DOWNSTREAM OF COMPRESSOR STATIONS

Sui Northern Gas Pipeline Limited (SNGPL)
Fasialabad, Pakistan
South Asia

Velosi was hired by Hannover Consulting Engineers to perform design review of NG pipe network for construction of a building at Sector RBW-7, Plot C25, Al-Raha Beach, Abu Dhabi.

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

Company presentation

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Ijaz Ul Karim Rao

MD, Velosi Asset Integrity Limited