Zusammenfassung
In determining the relative hazards associated with various vapor-air
mixtures in contact with a specific surface at a particular temperature
and pressure, the Bureau of Mines has in the past employed the standard
ASTM autogenous ignition temperature apparatus (ASTM Designation
D 286-30) as well as a modification of this apparatus. Since only
one electric heater was used in this modified apparatus, there was
a temperature differential along the axis of the test flask. Moreover,
because of the large amount of metal used in the construction of
this apparatus, 1 or more hours often were required to change the
temperature between successive tests. Accordingly, a new ignition
temperature apparatus (I-8) has been developed which makes the determination
of minimum spontaneous ignition temperatures-autogenous ignition
temperatures-more rapid, accurate, and economical.
Nutzer