Steiner Tunnel Test

• A 20 in. by 25 ft. specimen is placed on a ledge in the top of a 25 ft. furnace face down. A gas burner provides severe exposure to approximately 1400 degrees Fahrenheit under controlled conditions. (15 tunnels are in use in U.S. and Canada).

• At conclusion, the higher the numerical rating, the greater the flammability hazard. (O for asbestos cement board and 100 for red oak flooring).

• Results of the test may yield information about flame spread, smoke development, and fuel contribution.

Fire Retardant Coatings

• There are four basic methods to produce fire retardance in materials: chemical change (substitutions), impregnation (saturation), pressure impregnation and coatings

• Fire Retardant Coatings are employed to inhibit flame spread or present a non-combustible surface over which flame cannot spread

• Several coatings have been listed by national testing laboratories - recommended.

           
INDEX Interior Finishes / Flame Spread

FPT 102 - Fire Prevention and Inspection // Instructor: Kevin M. Kolb        Slide #2