When the liquid temperature rises, for instance in summer, the vapor pressure increases, when the liquid temperature drops, the vapor pressure drops. Under normal Indian conditions the pressure range will be between 2-9 bar.
These are designed as per the recommendations in IS-2825 / ASME Sec Vlll DlV - 1 codes and the material of construction are SA-516 / IS-2062/ IS-2002/SS-304 or as per the specific requirement of the customer. Steel used for the Tank and its fittings meets the Low Temperature Carbon Steel criteria and is tested thoroughly before fabrication. During Fabrication stringent quality norms are followed. Each tank undergoes various NDT & other inspection stages . We carry out tests like Dye Penetration Test, Radiographic Examination and the Hydro test.before despatch.
The vessels are stage wise inspected by our Inspection engineers / Third party Inspectors as per the recommendations of the relevant code and the Chief controller of explosives norms. All welding are performed by qualified welders only. Finally it is hydro tested and de-hydrated with dry nitrogen. MELLCON also offers these tanks under any third party inspection according to customers specific requirement.
These storage tanks are equipped with all standard instruments and controls like Rochestr gauge, excess flow check valves, safety valves, Pr. gauges, LPG Transfer compressor, Valves, Piping, Drains, Pr.Regulators, Water sprinkling system , gas leak detection system & a suitable Control panel. Optionally a Digital weighing scale can also be supplied as an integral part.
Most LPG storage tanks in standby-plant service are steel, non-refrigerated pressure vessels. Tanks are available in many sizes for both aboveground and underground service. New propane tanks are built to ASME standards and are designed for at least 250 psig working pressure. Common tank sizes and approximate dimensions are shown in the chart below. Larger industrial and commercial applications generally use 18,000 gallon and larger tanks.