3. Terminology
3.1 Definitions:
3.1.1 dynamic, adj - in petroleum products, the condition where the vapor above the test specimen and the test specimen are not in temperature equilibrium at the time that the ignition source is applied.
3.1.1.1 Discussion - This is primarily caused by the heating of the test specimen at the constant prescribed rate with the vapor temperature lagging behind the test specimen temperature.
3.1.2 fire point, n-in petroleum products, the lowest temperature corrected to a barometric pressure of 101.3kPa (760mmHg), at which application of an ignition source causes the vapors of a test specimen of the sample to ignite and sustain burning for a minimum of 5 s under specified conditions of test.
3.1.3 flash point, n-in petroleum products, the lowest temperature corrected to a barometric pressure of 101.3 kPa (760mmHg), at which application of an ignition source causes the vapors of a specimen of the sample to ignite under specified conditions of test.
3.1.3.1 Discussion - The test specimen is deemed to have flashed when a flame appears and instantaneously propagates itself over the entire surface of the test specimen.
3.1.3.2 Discussion - When the ignition source is a test flame, the application of the test flame can cause a blue halo or an enlarged flame prior to the actual flash point. This is not a flash point and shall be ignored.
