High-Expansion foam is used to suppress fire in a variety of applications, from Class A and Class B storage facilities to shipboard machinery spaces to aircraft hangars. Differences in regulatory requirements around the world have led to a confusing collection of high-expansion foam testing protocols. These various protocols
4 Method of Test - IMORULES
4.1.1 The foam properties of the foam concentrate should be determined using the following two evaluation parameters: .1 the expansion ratio as a function of gas temperature; and
Standard Test Method to Measuring the Post Dispensing …
2024年11月26日 · 1.1 This test method measures the volumetric expansion of aerosol foam sealants after dispensing. 1.2 This test method provides a means for estimating the quantity of initial material required to dispense in order to fill a cavity.
The type of foam concentrate will generally determine which test is most appropriate. Clearly like all other foam types, the ability to generate stable, expanded foam is crucial and so foam properties can be measured as has previously been discussed.
This method describes how to measure the expansion of a freshly dispensed liquid foam (froth) during the curing phase. 2. Short description of procedure The foam is dispensed into a linear joint up to a defined level. The foam expands during the curing phase to its final volume. The post expansion is the volume increase expressed as a percentage of
Foam concentrates should be tested periodically in accordance with NFPA 11, Standard for Low-, Medium-, and High-Expansion Foam, and NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, and EN 13568-2 fixed firefighting systems, foam systems, design construction and maintenance, or other
To prevent the glass measuring cylinder from breaking, due to expansion of the foam concentrate on freezing, insert the tube into the measuring cylinder, sealed end downward, weighted if necessary to avoid flotation, and the spacers ensuring it …
1. Expansion: Number of times a known volume of bitumen doubles itself when foamed with water. 2. Expansion Ratio: Measurement of the volume of foamed bitumen, calculated as the ratio of maximum volume of foam relative to the original volume of bitumen. 3. Half Life: Time it takes in seconds for the foam to collapse to half of its maximum
Determination of the post expansion of an OCF Canister Foam. This method describes how to measure the expansion of a freshly dispensed liquid foam (froth) during the curing phase. The foam is dispensed into a linear joint up to a defined level. The foam expands during the curing phase to its final volume.
ASTM C1643-14(2020) - Standard Test Method to Measuring the Post …
1.1 This test method measures the volumetric expansion of aerosol foam sealants after dispensing. 1.2 This test method provides a means for estimating the quantity of initial material required to dispense in order to fill a cavity.
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