MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202421075260 A) filed by Murtuza Mehmood Rajapkar; Atul Khaitan; Vinod Ramamurthy Bhat; and Meenaz Murtuza Rajapkar on October 04, 2024, for Pipe Freezing Method And System For Line Isolation To Perform Hydro-Tests With Lower Volumes Of Water.
Inventors include Murtuza Mehmood Rajapkar; Atul Khaitan; Vinod Ramamurthy Bhat; and Meenaz Murtuza Rajapkar.
The application for the patent was published on August 14, 2026, under issue no. 33/2026.
Abstract: The present invention relates to a system and method for isolating sections of a pipeline to perform hydrostatic testing using significantly reduced volumes of water. The system employs a cryogenic freezing unit to deliver a controlled stream of refrigerant to a predetermined section of the pipeline, forming a stable ice plug that isolates the desired section. Temperature sensors monitor the external pipeline conditions, and a pressure monitoring system ensures the integrity of the ice plug during testing. The control unit dynamically regulates the cryogenic freezing process, adjusting refrigerant flow based on real-time temperature and pressure data. This method minimizes water consumption while maintaining the safety and accuracy of the hydrostatic test.
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