(162f) High Expansion Foam 3-D Temperature Profile during Application on Lng: Experimental Results

High expansion foam (HEX) has been regarded as one of the most recommended methodologies in suppressing both LNG pool fire and vapor dispersion when it comes to LNG spill into LNG containment pit. While HEX effectiveness is generally shown by the study of the gas concentration and/or thermal radiation reduction, it is also necessary to understand the heat transfer phenomena between HEX and other heat source/receiver such as LNG pool, LNG vapor, and fire in more detail through field experiment. Even though this information could help predicting the important parameter in designing the foam system on LNG containment pit, there has been small experiments involving foam temperature profile at several different heights. Thus no 3-D profile have been generated.

An LNG field-experiment involving HEX application on LNG was conducted to study the HEX 3-D temperature profile during LNG vapor dispersion suppression (without fire). Heat transfer between LNG pool, HEX, and LNG vapor is investigated in detail.

When fire occurs, the 3-D temperature profile changes as the heat emitted by fire the acts another heat source. Therefore, another LNG field-experiment is performed to study the HEX 3-D temperature profile during LNG pool fire thermal radiation suppression.

This paper discusses the experimental setup, equipment used, and experiment results in detail.