Liquified Natural Gas (LNG)

Liquefied Natural Gas (LNG) is a natural gas containing methane which, when converted into a liquid state, is not explosive and cannot ignite.

Why is it converted to LNG?

Natural gas is converted into LNG as it is much easier to store and transport, particularly as it requires about 1/600th the volume of natural gas.

For LNG to be used as a gas it first needs to be converted back from a liquid state to a gas state. This is done at regasification plants.

How is LNG transported?

From its initial processing to convert from a natural gas to LNG, LNG will pass through numerous processes from treatment and liquefication plants to storage, shipping then into final storage before regasification.

Is it explosive?

Although in its liquid state LNG is not explosive and cannot ignite, if vaporised and mixed with air it becomes combustible. This can occur if LNG were to leak from a faulty flange joint in a pipeline during movements between processing, storage, transportation and regasification. The LNG would vaporise rapidly at which point if it reaches a source of ignition would catch fire.

How can I mitigate risk?

Liquified Natural Gas (LNG) projects have numerous applications for safety shields, whether it be the cryogenic LNG process itself or one of the many other chemicals used.

The flange joints along the LNG lines themselves need to be shielded to prevent a jet release which would otherwise permit LNG vapour to mix with air and become combustible. This can be done by installing spray safety shields on flange joints stopping the formation of a mist/vapour cloud.

Flangeguards has successfully delivered many thousands of safety shields for LNG applications on projects all around the world. Installation of Sureband Steel spray safety shield to the flanges of pipelines at LNG processing plants and storage facilities control LNG spray out, preventing risk of fire and explosion.

  • Sureband Steel is manufactured from 316 Stainless Steel and works effectively at high pressure and wide temperature ranges. 
  • Sureband Steel features Pressure Diffusion Technology to control any escape of LNG from a faulty flange preventing vaporisation.
  • Sureband Steel has a Quick Fit connection and fits multiple flange sizes preventing fitting errors.
  • Sureband Steel is manufactured by Flangeguards Limited to ISO9001:2015.

For LNG itself, we recommend the following shield type (Sureband Steel);-

For other process chemicals, we recommend the following shield type (Sureband Clear);-

 
Recommended

316 STEEL shield with Pressure Diffusion Technology (PDT) incorporating multi-layered steel mesh. Simple design and quick-connection latch

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Recommended

All PTFE shield with Pressure Diffusion Technology (PDT) incorporating multi-layered PTFE mesh. No pull-cords, quick connection. Litmus indicator patch included

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