Description
Once completing a hydro test, technicians run the same pigback to the launch site using compressed air. Pipeline dewatering can be very dangerous in the pre-commissioning process. This is because air compresses while water does not. Consequently, large air pockets form in front of the dewatering pig. These pockets create violent releases of air and water at the terminus. EMT Technicians monitor the pig during dewatering. They ensure valves and piping at the release point maintain constant backflow pressure. This minimizes danger to personnel and equipment. After completing pipeline dewatering, the drying process can begin.
EMT stocks a complete line of dewatering pigs to meet your project needs. Our dewatering pigs enhance the safety of pipelines during maintenance, repair, and hydro testing, ensuring efficient and effective liquid displacement. Trust EMT to provide the right tools for your pipeline projects, ensuring smooth operations and preventing sluggish flow.
Brief Introduction
Foam disc pigs are one type of dewatering pig. They feature a series of ridges or discs. These ridges provide extra wiping and sealing capabilities. Because of their good seal, foam disc pigs suit various applications. These include product recovery, de-watering, and nitrogen purges. Additionally, they come in medium and heavy-density urethane foam. You can modify foam disc pigs to accommodate transmitters, magnets, and radioactive sources. Furthermore, you can outfit them with ropes or pull straps. This makes pig removal easier. Foam disc pigs offer versatile and efficient solutions for pipeline maintenance.
What is a dewatering pig?
Liquid displacement is a vital aspect of optimizing performance, production, and profitability in pipeline projects. From pipeline dewatering after hydro testing to capturing valuable natural gas liquids, liquid displacement plays a crucial role during commissioning, batching products in lines that carry multiple products, inerting and nitrogen purging, and decommissioning pipelines.
At EMT, we understand the importance of effective dewatering in maintaining the integrity and efficiency of your pipeline systems. A dewatering pig is an essential tool designed to remove water from the interior of pipelines, ensuring they remain dry and operational. This specialized device helps prevent corrosion, avoid cross-contamination, and maintain optimal flow conditions.
Dewatering pigs typically feature robust construction with flexible sealing elements like cups and discs, providing a tight fit within the pipeline. These pigs navigate bends and changes in pipeline diameter, making them suitable for various configurations. By displacing water ahead as they move through the line, dewatering pigs prepare the pipeline for subsequent drying processes and routine maintenance.
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