Pt. 25, App. F

14 CFR Ch. I (1-1-19 Edition)

spaschal on DSK3GDR082PROD with CFR

(6) Turn off the burner and remove the
thermocouple rake.
(7) Repeat (1) to ensure that the burner is
in the correct range.
(g) Test Procedure. (1) Mount a thermocouple of the same type as that used for calibration at a distance of 4 inches (102 mm)
above the horizontal (ceiling) test specimen.
The thermocouple should be centered over
the burner cone.
(2) Mount the test specimen on the test
stand shown in Figure 1 in either the horizontal or vertical position. Mount the insulating material in the other position.
(3) Position the burner so that flames will
not impinge on the specimen, turn the burner on, and allow it to run for 2 minutes. Rotate the burner to apply the flame to the
specimen and simultaneously start the timing device.
(4) Expose the test specimen to the flame
for 5 minutes and then turn off the burner.

The test may be terminated earlier if flame
penetration is observed.
(5) When testing ceiling liner panels,
record the peak temperature measured 4
inches above the sample.
(6) Record the time at which flame penetration occurs if applicable.
(h) Test Report. The test report must include the following:
(1) A complete description of the materials
tested including type, manufacturer, thickness, and other appropriate data.
(2) Observations of the behavior of the test
specimens during flame exposure such as
delamination, resin ignition, smoke, ect., including the time of such occurrence.
(3) The time at which flame penetration
occurs, if applicable, for each of the three
specimens tested.
(4) Panel orientation (ceiling or sidewall).

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