- Author
-
Isaksson, S.
|
Persson, H.
- Title
- Fire Extinguishing Foam: Test Method for Heat Exposure Characterisation.
- Coporate
- Swedish National Testing and Research Institute, Boras, Sweden
- Report
-
SP Report 1997:09,
1997,
34 p.
- Keywords
-
foam extinguishing systems
|
test methods
|
exposure
|
foam drainage
|
thermal radiation
- Identifiers
- foam destruction
- Abstract
- The capability of fire fighting foams to resist heat radiation has been investigated in order to get a better understanding of the extinction mechanisms. Previous work identified a need to improve the measuring technique for drainage and foam destruction rate. The influence of foam layer thickness has also been investigated as well as the energy balance in the foam-fuel system during heat exposure. The drainage rate measurements have been improved by the use of a measuring cyclinder beneath the test vessel where the interface between the fuel and foam solution is recorded visually. The foam height measurement technique has also been improved making it possible to get an on-line measurement of the foam layer thickness and thereby a better possibility to determine the foam destruction rate as a function of time.