MeilGroup is proud to announce the successful completion of the Mangalore LPG Underground Storage Cavern Project. This important achievement marks the end of extensive engineering and construction efforts, with all testing phases successfully finished on June 6, 2025. This project highlights MEIL's capabilities in delivering large-scale, complex infrastructure solutions that are vital for India's energy future.
A critical phase of the project was the Cavern Acceptance Test, or CAT, which was conducted from May 9, 2025, to June 6, 2025. This thorough test involved three distinct stages. First, the pressurisation stage, where the storage area was gradually filled with air, increasing the pressure to 8.310 kg per square centimetre. Following this, the stabilisation stage involved closing all vents for over 100 hours to carefully check for any leakages while continuously monitoring hydrogeological and instrumentation readings. Finally, the depressurisation stage saw the pressure gradually reduced. The successful completion of these tests confirms that the cavern is completely tight and ready for the safe storage of LPG.
The Mangalore LPG Storage Cavern is an engineering marvel. It features an access tunnel stretching 1083 metres, an upper water curtain of 578.2 metres, and a lower water curtain spanning 804.31 metres. Additionally, it includes 486.2 metres of connecting tunnels, two main caverns—Cavern S1 at 220 metres and Cavern S2 at 225 metres—and a shaft measuring 164.1 metres. These carefully built components ensure the safety and efficiency of the storage facility.
This project holds immense importance for India's energy landscape. By strengthening the country's strategic petroleum reserves, the Mangalore LPG storage facility will contribute significantly to ensuring a steady and reliable supply of liquefied petroleum gas. It plays a crucial role in supporting India's energy security and meeting the ever-growing demand for clean energy across the nation.