TB 93 Thermo-Gel Fire Blocking Gel Flashcards
Thermo-Gel is a liquid concentrate composed of ______.
super absorbent polymers.
These super absorbent polymers can absorb ____ their weight in water.
hundreds of times
The gel, when applied to the exterior surface of combustible materials, provides an _____ between the heat of a fire and the protected surface.
insulating zone
Properly applied, Thermo-Gel provides a high level of protection from _____.
radiant heat, flying embers and direct flame impingement.
Foaming agents (such as Class “A” foam) are mixed with air and water to produce air bubbles in a process known as ____.
aeration.
An aerated foam solution increases the surface area of the liquid thereby increasing the _____ of the foam solution.
heat absorptive capability
The increased surface area also improves the mixture’s ability to cling to ____.
vertical surfaces.
Tests have demonstrated that air bubbles burst when exposed to temperatures in the range of ____ Fahrenheit.
170 degrees
Foam blankets break down ____ following application.
15 to 30 minutes
Thermo-Gel produces a bubble of water surrounded by a ____.
polymer shell
Being filled with water instead of air, the bubble can _____ than compressed air foams.
absorb far more latent heat
Thermo- Gel does not break down like foam blankets. Following application, Thermo-Gel can be expected to remain in place from ____.
6 to 36 hours.
Unlike foams that must be reapplied when the foam blanket drains off, the Thermo-Gel coating ____ and can be rehydrated with a ____.
dries in place / fine mist
Thermo-Gel is ____. The product will not ____. When the threat of fire diminishes, the product can normally be hosed off with an ordinary garden hose.
non-toxic / harm paint or metal surfaces
Thermo-Gel’s ability to coat and cling to vertical surfaces makes it ideally suited for _____.
exposure protection
The product can be applied to all exterior structural surfaces including ______.
metal, glass, stucco, and wood
Thermo-Gel may also be applied with success to ______.
compressed gas cylinders, motor vehicles or railroad tank cars.
Thermo-Gel can also be applied to vegetation surrounding a structure in order to _____.
increase the defensible space.
Direct fire attack should ____ be made with Thermo-Gel.
not
Thermo-Gel is an expensive additive and does not provide the ____ characteristics normally associated with fire department hose streams.
reach and handling
Companies shall carry one case of _____ containers of Thermo-Gel on the apparatus.
four one-gallon
When the probability of brush fires increases (i.e., extreme or red flag rating) companies shall carry____ cases of Thermo-Gel on the apparatus (bringing the total product carried to three cases or ______).
two additional / twelve 1-Gallon containers
NP
75 PSI
FL for eductor
60 PSI
