L&T Valves have supplied India’s first indigenously-developed HIPPS (High Integrity Pressure Protection System) to Dirok Gas Field Development Project in Assam, India. The project is promoted by a consortium of Hindustan Oil Exploration Company (HOEC), Oil India Limited (OIL), and Indian Oil Corporation Limited (IOCL).
HIPPS is a safety instrumented system (SIS) designed to protect oil & gas production, refining and pipeline systems against over-pressurization. Conventionally, spikes in pressure are managed by venting or flaring excess fluids. HIPPS is a smarter alternative that detects and isolates the source of high pressure within seconds. By avoiding discharge, HIPPS averts potential harm to people, facilities, and the environment.
The SIL-3 capable HIPPS, supplied to Dirok Gas Gathering Station (GGS), has at its core two 12” Class 1500 fire-safe hydraulically-actuated metal-seated ball valves with 1oo2 voting logic. A solid-state logic solver, explosion-proof pressure transmitters (2oo3), high integrity manifolds and control panels complete the HIPPS assembly. Redundancy is built in at multiple levels to enhance availability and reliability. Further, partial stroke testing (PST) capability of the system provides real time diagnostics.
HIPPS leverages the company’s expertise in system design and integration. “HIPPS is a major achievement that reinforces our position as a global leader in engineered flow-control solutions,” said, Mr. N.V. Venkatasubramanian, CE & Director, L&T Valves.