LNG Tank Calibration

Liquefied natural gas (LNG) tank calibration.

Intertek provides calibration services for the LNG industry, with accurate volume calibration of ship and shore-based LNG storage tanks.

LNG vessel tank calibration:  

Initially, LNG vessel tank calibration is conducted at the shipyard prior to delivery. For LNG vessels already in service, recalibration of LNG vessel tanks are conducted at either dry-dock or at lay berth. In both cases, the vessels tanks are physically entered and measured to produce highly accurate tank volume tables to be used for custody transfer purposes.

There are two main types of LNG tank designs in use throughout the LNG industry. The spherical (Moss Rosenberg) design and the membrane (Gaz Transport / Technigaz) design of LNG vessel tanks make up approximately 98% of the current LNG Fleet. Each design has its own unique characteristics that need to be evaluated in order to properly determine the exact dimensions, analyze the thermo effects of the materials used to build the tank and calculate any adjustments or corrections (list, trim, density, thermal, etc) that would be needed to translate a measured liquid level gauge into an accurate liquid volume.

LNG shore tank calibrations:  

Most LNG shore tanks are cylindrical in design, and measured in a manner similar to other cylindrical tanks (crude oil, gasoline, etc.). Like the LNG vessel tanks, special attention is paid to the thermal properties of the materials used in the construction of the shore tank to determine and calculate any adjustments or corrections that would be needed to translate a measured liquid level gauge into an accurate liquid volume.

Industry standards and governmental compliance:  

Both LNG vessel tank & LNG shore tank calibrations conducted by Intertek follow client instructions in accordance with published industry standards and compliances with the approval of government regulatory authorities in Australia, Qatar, Korea, Japan, India, Italy, Indonesia, Malaysia, Oman, USA and other nations.

Contact us to see how Intertek can help your organization with LNG Tank Calibration.