Report On The Effects Of Fire On LNG Carrier Containment Systems (eBook)

Published Date

August 2012

Report On The Effects Of Fire On LNG Carrier Containment Systems (eBook)

(Excludes any applicable taxes)

This SIGTTO report investigates the response of LNGC cargo tanks exposed to a large enveloping pool fire that could possibly result from the spillage of LNG onto the sea and its subsequent ignition. This follows concern about the vulnerability of LNG carrier tanks insulated with non-fire-resistant materials such as polystyrenes or polyurethanes.

Be the first to review this product

Current practice provides for pressure relief systems, designed with credit for the tank’s insulation, to prevent LNG cargo pressurisation due to boil-off and fire (IMO IGC Code 8.5). There is concern that the insulation materials in the PRV system may not withstand fire temperatures, or the system itself may not be capable of relieving the vapour flows resulting from the increased boil-off due to partial or total insulation failure.


After consulting SIGTTO members, the LNGC containment system designers, the USCG and the major classification societies, a working group was formed to investigate the subject and report back on the possible effects and any mitigation measures required. They concluded that for the complex issue of how a large fire scenario may emit heat to a high-sided vessel and affect the internal materials and structure of an LNG carrier, there were many areas of uncertainty. The studies capture both steady state and time-based calculations, which rely on knowledge of, or assumptions for, fire scenario conditions.


Given the concerns within the industry over large pool fire surface emissive powers, and their impact on a carrier structure, unanimous agreement for the report was unachievable. However, the vast majority agreed with the conclusions and recommendations made in Chapters 10 and 11.

In steady state conditions, providing the relief valves comply with the sizing requirements of the IGC Code, the valves are capable of relieving the anticipated vapour from the loss of the entire insulation layer as well as the weather cover of a Moss-type LNG carrier.


For time-based calculations, following extensive tests and reviews of previous insulation studies, a range of times for complete degradation of insulations could not be achieved due to conflicting evidence. Therefore, Recommendation 2 is made.


This book covers ESD Arrangements and Linked Ship/Shore Systems for Liquefied Gas Carriers.

Title: Report On The Effects Of Fire On LNG Carrier Containment Systems (eBook)
Product Code: 4436F031
Published Date: August 2012

Bought this product? Why not review it?

If you have a question about this product, please contact us directly.

Windows eBooks:


To access the eBook, you need to install our free Windows eBook Reader.

The application can be downloaded from:


Standalone eBooks are supplied with 1 licence + 1 backup and are not transferable between platforms.


Remote Desktop Services (Terminal Services) and virtual environments are not supported.


The Windows eBook Reader works with Windows XP or later OS (but not Windows RT).

See more details.


Cloud (online) eBooks:


The Cloud (online) eBooks use Microsoft Silverlight browser plugin to deliver the best possible reading experience with the ability to work in offline mode.


It is an annual subscription service (i.e. each eBook is purchased for 1 year of use).

Online licences are not transferrable to Windows or iPad (or vice-versa).


Silverlight is compatible with the major web browsers used on Windows and Mac OS X operating systems.

However it is not supported on Linux, Android, Windows RT and iPad devices and therefore the Cloud eBooks use an HTML site in these instances.

The HTML site is more restricted than the Silverlight version.


See and more details.


Note for Mac Users:


Mac users can read Windows eBooks with Boot Camp or using virtual machines such as Parallels Desktop, Virtual Box, ...

Alternatively, Cloud (online) eBooks are accessible on Mac, including the Silverlight plugin with offline mode.


Note for Linux Users:


Linux users can read Windows eBooks using a virtual PC.

Alternatively, the HTML version of the Cloud (online) eBooks is accessible.


Note for Tablet Users:


Tablets owners can use the HTML version of the Cloud (online) eBooks.