LNG Storage Tanks

Cryogenic storage tanks for LNG are designed and manufactured for all types of bulk, satellite plant and fuel service station applications with the requirements for safe, easy and economical operation.

The Highlights of ISISAN tanks are:

  • LnV / LnH series tanks are vertical or horizontal, stationary pressure vessels with perlite insulation for storage of extreme cold liquid natural gas, with high quality vacuum level and low evaporation rate.

  • Low operation costs and additional safety by the economizer circuit, because the boil off gas is routed into the main system via the economizer circuit taken from a top gas connection, which prevents wastage of gas.

  • In addition to our standard range of tanks, ISISAN can provide you a wide range of tailor made storage solutions up to 300,000lt with a Maximum Allowable Working Pressure of 5 bar or other pressures as required.

  • ISISAN bulk tanks are designed and manufactured in accordance with and conforming to EC directive PED 97/23/CE and EN 13458 or other national pressure vessel codes as required.

  • ISISAN’s cryogenic tank manufacturing facility is ISO 9000 approved, to assure the best quality in all aspects of our operation.

  • The support legs used are calculated according to UBC, Eurocode standards to resist high wind and earthquake loads.

  • Carefully designed stainless steel pipe work to reduce filling operation time. Appropriate bending of stainless steel pipe work means fewer connections, minimizing potential leaks, higher operability and less servicing.

  • Operational reliability by the mono-bloc pressure building economizer-regulator for easy pressure adjustments.

  • High quality stainless steel pressure gauge and differential pressure contents gauge are standard with optional switches, transmitter and/or telemetry unit.

  • High performance safety system with dual relief valves and rupture discs by the diverter valves as standard.

  • Easily accessible valves and safety relief valve outlets directed away from the operating area, enables safe operation.

  • Rugged internal supports for safe transportation by road, container or rail.

 Design Code  EN 13458 - PED 97/23/EC
 Max. Allowable Working Pressure   5 bar
 Design Temperature  -196°C
 Inner Vessel Material  Stainless Steel (According to EN 10028-7)
 Outer Vessel Material  Carbon Steel (According to En 10025/EN10028-3) 
 Insulation  Pertile & Vacuum
5 Bar LNG Storage Tanks
MAWP Gross Capacity Net Capacity (%95 Filling) Daily Evaporation Rate (N2) 0D B L W H Empty Weight
bar liters liters % / day mm mm mm mm mm kg
5 6100 5795 0.27 2000 3820 4520 2200 2190 2700
10000 9500 0.25 2000 5765 6300 2200 2190 2700
16000 15200 0.22 2750 4620 5320 2950 3050 4700
22000 20900 0.2 2750 6100 6800 3070 3050 6200
32000 30400 0.15 2750 8330 9030 3070 3050 10000
53000 50350 0.13 2750 13570 14270 3400 3050 14400
60000 57000 0.11 3350 9900 10600 3920 2830 17000
67000 63650 0.10 3350 10870 11750 3920 3120 19000
95000 90250 0.10 3350 14650 15350 3350 3850 25000

LNG Storage Tanks P&ID

1 Fill Connection 35 Thermal Relief Valve OPTION-3 Line Purging
2-L Bottom Fill Valve 40 Level Indicator 19 Purge Valve
3-G Top Fill Valve 41 Equalizer Valve OPTION-4 Emergency Shut Off System
4 Try Cock Valve 42-G Low Pressure Shut Off Valve 21-L Emergency Shut Off Valve
5-G Top Fill Isolation Valve 43-L High Pressure Shut Off Valve 35 Thermal Relief Valve
6-L Bottom Fill Isolating Valve 44 Pressure Indicator OPTION-5 PBC Isolation Valve
10 Pressure Building Coil 51 Evacuation Connection 11 Liquid Inlet Valve for PBC
13 Economizer Valve 52 Vacuum Safety Device 35 Thermal Relief Valve
13-2 Manual Economizer Valve OPTION-1 Vapor Equalizing Line OPTION-6 PBC Outlet Valve
14 Combine Valve (Filter, Regulator, Economizer, Non Return Valve) 22 Vapor Equalizing Connection 12 Liquid Outlet Valve for PBC
20-L Liquid Withdrawal Valve 23 Vapor Equalizing Valve
30 Change Over Valve OPTION-2 Emergency Shut Off System
31/A Inner Vessel Safety Valve 18 Emergency Shut Off Valve
31/B Inner Vessel Safety Valve 35 Thermal Relief Valve
34 Vapor Vent Valve