Interbarrier Space – Definition and Pronunciation
What is Interbarrier Space?
Interbarrier space is the space between a primary and a secondary barrier of a cargo containment system, whether or not completely or partially occupied by insulation or other material.
Examples of Interbarrier Space
Interbarrier spaces must to be inerted with a suitable dry inert gas, usually nitrogen, and maintained at specified gas percentage and pressure. This nitrogen can come from a shipboard nitrogen generator or shipboard storage. Stored inert gas should be sufficient for normal consumption of at least 30 days.
From “Interbarrier Space Protection: Pressurization, Inertization and Scaffolding Techniques”.
This danger is to be kept present during the construction of the ship and some unfortunate accidents have been reported. However, the probability of fire in the insulation can developing in an existing ship is almost not existent. In fact, not only there are no sources of ignition in the interbarrier spaces, but this spaces are always kept inerted.
From “LNG Transportation Risks and Essential Insights”.
The interbarrier space thermocouples (sensors) are installed at 6 points around the space, all 6 of them in pairs. During normal conditions, one thermocouple is in service while the other is on standby. If the first sensor fails, the second will automatically come into service.
From “General Arrangement of LNG Custody Transfer System”.
Pronunciation of Interbarrier Space
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