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Cochin Despatch Terminal

At Cochin, petroleum products are pumped from the storage tanks of BPCL. The mainline pumps (MP1, MP2 and MP3) take suction from common header. To ensure adequate NPSH for mainline pump, booster pumps (BP1 and BP2) are provided. The product from the booster pump discharge is filtered and metered before it enters the suction of mainline pumps. The fluid is filtered in basket filters to remove the solid particles (of size greater than 40 mesh). The flow is measured using turbine meter. Density meter is provided to measure the density of fluid and the signal from the density meter is fed to the flow computer. Flow computer indicates the corrected volumetric flow rate as well as mass flow rates of the petroleum products being transported. Corrosion inhibitor is injected to prevent internal corrosion of the pipeline. The concentration of corrosion inhibitor in the line is maintained between 3 and 5 PPM so that the internal corrosion rate is limited within permissible values using metering pumps. Scraper launcher is provided at Cochin Dispatch Terminal for pigging. The product is dispatched to Coimbatore through an 18” pipeline. For sectionalizing Cochin-Coimbatore pipeline, fifteen sectionalizing valves are provided.

Coimbatore Tap off Terminal

At Coimbatore Terminal, petroleum products (MS, SKO & HSD) will be withdrawn as per the requirement. Density meter is provided to detect interface arrival. Petroleum products are filtered in basket filters to remove the solid particles. The flow is measured using turbine meter. Flow control is done through flow control valve. In case of higher terminal pressure, emergency shutdown value will be closed for safety of the terminal. The balance products will be transported to Karur Receipt Terminal. The product is dispatched to Karur through a 14” pipeline. Scraper launcher and scraper receiver are provided for pig launching and receiving. For sectionalizing the Coimbatore-Karur pipeline, two sectionalizing values are provided.

Karur Receipt Terminal

First the products pass through basket filters to remove the solid particles. At Karur receipt terminal one destiny meter is provided, close to the mainline block valve, to detect the batch/interface arrival in advance. Another density meter is provided at the metering skid for metering and batch arrival. At Karur the Pressure Control Valve is provided to control the upstream pressure as well the downstream pressure. Scraper receiver is provided for receiving pigs.