Hazira LNG and Port

Technical Features

Spread over an area of 46.7 hectares, the terminal has a jetty where LNG cargo is unloaded through to the cryogenic tanks. LNG is stored in the tanks at -160 C and pumped out of the tank for sending out to customers after regasification.

The Main components of the terminal are LNG jetty with cryogenic unloading arms, cryogenic tanks to store LNG at -160C, LNG pumps to boost pressure to 80-100 barg, LNG vaporisers and send-out pipeline. The send-out pipeline carries the gas to the delivery point which is located at a distance of 12.5 kms from the terminal.

LNG Jetty

The LNG jetty has two liquid unloading arms both of which are cryogenic and are designed to unload LNG at -160 ēC . Unloading of LNG can be done at a maximum rate of 11000 M3/Hour. The jetty has state of art Emergency Shutdown System and safety equipments to avoid & control spills and leaks of LNG. The LNG unloaded is carried in cold condition by a 1.6 Km pipeline to the LNG tanks.

LNG storage tanks

The terminal has two LNG tanks with a capacity of 160000 M3 each. These tanks have pre-stressed concrete outer and 9% Nickel steel inner tank to hold the LNG at -160 ēC. LNG is stored in the tanks at atmospheric pressure. Cold insulation is provided between the outer and inner tanks to minimise heat ingress to the tank. This would ensure that LNG can be stored in the tanks at low temperature with minimum vaporisation of LNG. The LNG tanks are large with inner tank diameter of 79m. The tanks are provided with protection against high pressure to avoid any damage and with robust controls to keep the pressure within limits.

LNG cryogenic pumps are installed inside the tanks, which pump out LNG from the tanks at intermediate pressure. The LNG pressure is finally boosted to 100 barg with the help of high speciality multi stage cryogenic pumps before being sent to the regasification section.

LNG Vaporisers

LNG is regasified in Open Rack Vaporisers, using sea water as the heating medium. Terminal has three Open Rack Vaporisers which are used to vaporise LNG. Vaporisers’ design ensures proper distribution of seawater. These vaporisers are designed to handle LNG at -160 ēC and have been provided with instrumented protections to avoid any damage.

The terminal also has a Submerged Consumption Vaporiser which uses fuel gas as the source of heat. In these vaporisers, heat generated by burning fuel gas is used to warm the water which in turn vaporizes LNG.

© 2010-11 Hazira LNG and Port.

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