Skip to main content

Our Business / Thermal Power StationsSafety Measure of LNG Terminal

LNG Leakage Prevention, Early Detection and Leakage Spreading Prevention

At our LNG terminal, in preparation of the unlikely event an LNG leakage occurs, we take safety measures under the three concepts of: (1) Leakage prevention, (2) Early detection, and (3) Leakage spreading prevention.
For example, installation of gas detectors and such and constant monitoring in the central control room are performed for early leakage detection. Ground-based reservoirs are also provided with liquid-proof barrier, insulated dams and a water curtain that are collectively operated in the central control room.
We have been operating safely for over 40 years since the introduction of LNG; we will continue to work to further strengthen our safety measures and improve all possible operation.

Leakage Prevention
  • Selection of materials resistant to cryogenic temperatures, and active adoption of welded structures
Early Detection of Leakage
  • Installation of gas detectors, low temperature detectors, and premises monitoring cameras
  • Information from these devices, constantly monitored in the central control room
Leakage Spreading Prevention
  • Installation of barriers around ground tanks
  • Installation of vaporization control facilities (Hi-Ex Facilities), leakage gas diffusion facilities (water curtains), etc.
Considerations When Handling Fire
  • Adoption of explosion-proof structures for electrical goods around LNG handling facilities
  • Restriction of fire usage by setting controlled areas (Including specially controlled areas)

Comprehensive Disaster Prevention Panel

Comprehensive Disaster Prevention Panel

A comprehensive disaster prevention panel is installed in the central control room for the continuous monitoring of gas detectors, low temperature detectors, monitoring cameras, etc. and the operation of water curtains, sprinkler facilities, powder fire extinguishers, etc.

Liquid Collecting Tank

Liquid Collecting Tank

In preparation of the unlikely event that a leak occurs, liquid collecting tanks are installed around the LNG tank to prevent its spreading.

Fire Extinguishing Pump

Fire Extinguishing Pump

In preparation of the unlikely event that a fire breaks out, a large capacity fire pump is installed. Although it is normally motor driven, it can also be backed up with a diesel engine. Mobile powdered-chemical fire engines are also deployed around the premises.

Water Curtain

Water Curtain

In preparation of the unlikely event of a gas leakage or fire, water curtains are installed to enhance the diffusion of leaked gas and to reduce radiant heat from fire.

Approach to Safety