HIGH PRESSURE PIGGING 40 000PSI
The objective of the present intelligent pigging program includes cleaning, electronic gauging (EGP) and In-line inspection (Corrosion detection using MFL technique) without disturbing process parameters) is to assess the heath of pipeline in quantifiable terms and to get the base data.
TECHNICAL SPECIFICATIONS OF HIGH DENSITY POLY PIGS
TECHNICAL SPECIFICATIONS OF BI-DIRECTIONAL (BI-DI) GAUGE PIG
Each Bi-Di Gauge pig shall essentially consist of four polyurethane sealing disc and two support/guide discs, mounted on a carbon steel body. Each disc shall be separated by suitable polyurethane spacers. Each pig shall be suitable for specific nominal diameter pipelines to be cleaned.
Physical properties of polyurethane for sealing discs and supporting discs shall be as per ASTM 02240/ DIN 53505/BS903/ DIN53504/ DIN.53516. The PIG shall withstand temperature range from 0 Deg to 80 Deg.C and upto 90 Deg C for short duration.
DEGREE OF CLEANLINESS
The degree of cleanliness of pipeline segment will be based on the following criteria: • Maximum amount of debris coming out of the line shall be less than 24 Kg per 24 Km length of Pipeline Section. Magnets onto the magnet pig shall have collected less ferrous debris than the magnet can hold. If the those above criteria are not sufficient then it required to run extra cleaning pig at no extra cost to GAIL to achieve the cleanliness of Pipeline segment to obtained interpretable data by CDP run as per provisions of the Scope of Work.
Pipeline pre-commissioning, Pipeline maintenance, Boiler maintenance, Line dewatering, Line drying
|Pigging launcher & receiver||Sample of poly pigs||Pigged pipe clearing scale|