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WATER SPRAY SYSTEMS FOR LNG RESERVOIRS AND TANKS. FIRE PROTECTION FOR LIQUEFIED NATURAL GAS (LNG) STORAGES

WATER SPRAY SYSTEMS FOR LNG RESERVOIRS AND TANKS. FIRE PROTECTION FOR LIQUEFIED NATURAL GAS (LNG) STORAGES

Pozhneftehim supports designing fire protection systems and manufactures equipment for water spray systems of LNG facilities.

More than 10 year experience of reations with leading oil and gas and petrochemical organizations provides an opportunity to create highly effective fire protection systems.

LNG tanks. Photo: газэкосеть.рф

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Objects for storage and processing of liquefied natural gases (LNG). General information

Liquefied natural gas (LNG) is an odorless and colorless liquid with a density of 0.41-0.5 kg/l, depending on temperature, pressure and higher alkanes content.

The main substance in the LNG composition is methane, its content makes 85-95%.

Additional substances: ethane, propane, butane, nitrogen, hydrogen sulfide, mercaptan sulfur.

For comparison, liquefied hydrocarbon gases (LHG) contain the following main substances: propane and butane, their content is 95% min.
Additional substances: pentane, methane, ethane, ethylene, propylene, butylene.

Unlike LHG, which are stored in gasholders at a temperature close to atmospheric, LNG is stored in cryogenic tanks where a temperature of about minus 160оC is maintained.

Pure LNG does not burn, does not self-ignite or explode. In an open space at normal temperature, LNG returns to its gaseous state and mixes rapidly with air. During evaporation, natural gas can ignite if a contact with a flame source occurs.

According to SP 326.1311500.2017 “Objects of small-tonnage production and consumption of liquefied natural gas. Fire Safety Requirements”, LNG production facilities may include the following main systems, technological equipment, installations and structures:

According toSP 240.1311500.2015 “Storage of liquefied natural gas. Fire Safety Requirements” LNG storage facilities may include:

Key equipment for active fire protection of LNG facilities

In the event of a fire, extinguishing LNG is not advisable. In this case, it is necessary to protect the surrounding objects from the direct effects of the burning bed (thermal radiation, spread of combustion) by water spray.

Therefore, the kye equipment providing active fire protection at consumption and production facilities includes fixed water spray installations and fire monitors. In some cases, water curtains are used.

Regulatory requirements for water spray of LNG tanks

According to SP 326.1311500.2017 “Objects of small-tonnage production and consumption of liquefied natural gas. Fire Safety Requirements":

According to SP 240.1311500.2015 “Storage of liquefied natural gas. Fire Safety Requirements":

For more information on the Pozhneftehim water spray systems, see sections:


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PRODUCTION DIRECTIONS OF POZHNEFTEHIM-DETAL

Pozhneftehim produces a wide range of equipment for fire extinguishing systems and installations. These are foam generators of low, medium, high expansion, fire filters, fire monitors, fire towers, stabilizers, interlayer nozzles, fire equipment connection nodes, etc.

Foam concentrate dosing systems with turbine inline, balanced pressure and foam inductor proportioners. Production of containers (tanks) for storage of foam concentrate and piping arrangement.

Pozhneftehim has been producing custom-made bladder tanks since 2010. We supply products with a full set of permits and operational documentation including factory test reports.

Custom-made block-modular structures: block containers, fire hydrant units, foam cabinets. Block-modular products of Pozhneftehim are equipped with equipment, systems and installations in accordance with the requirements of design documentation.

*Конкретный перечень услуг и объем работ определяется договором в зависимости от потребностей Заказчика