1181 – 1185. [RESERVED]
727 1186. APPENDIX F, PART V, DID NOT EXIST PRIOR TO AMENDMENT 25-66.
1187. APPENDIX F, AMENDMENT 25-66, Effective September 26, 1988.
PART V - TEST METHOD TO DETERMINE THE SMOKE EMISSION
CHARACTERISTICS OF CABIN MATERIALS
(a) Summary of Method. The specimens must be constructed, conditioned, and tested in the flaming mode in accordance with American Society of Testing and Materials (ASTM) Standard Test Method ASTM F81483.
(b) Acceptance Criteria. The specific optical smoke density (DS), which is obtained by averaging the reading obtained after 4 minutes with each of the three specimens, shall not exceed 200 1188 – 1192. [RESERVED]
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729 1193. APPENDIX F, PART VI, DID NOT EXIST PRIOR TO AMENDMENT 25-111.
1194. APPENDIX F, AMENDMENT 25-111, Effective September 2, 2003. This amendment revised Part I and added Parts VI and VII.
[PART VI-TEST METHOD TO DETERMINE THE FLAMMABILITY AND FLAME
PROPAGATION CHARACTERISTICS OF THERMAL/ACOUSTIC INSULATION MATERIALS] [Use this test method to evaluate the flammability and flame propagation characteristics of thermal/acoustic insulation when exposed to both a radiant heat source and a flame.
(a) Definitions.
"Flame propagation" means the furthest distance of the propagation of visible flame towards the far end of the test specimen, measured from the midpoint of the ignition source flame. Measure this distance after initially applying the ignition source and before all flame on the test specimen is extinguished. The measurement is not a determination of burn length made after the test.
"Radiant heat source" means an electric or air propane panel.
"Thermal/acoustic insulation" means a material or system of materials used to provide thermal and/or acoustic protection. Examples include fiberglass or other batting material encapsulated by a film covering and foams.
"Zero point" means the point of application of the pilot burner to the test specimen.
(b) Test apparatus.
(1) Radiant panel test chamber. Conduct tests in a radiant panel test chamber (see figure 1 above). Place the test chamber under an exhaust hood to facilitate clearing the chamber of smoke after each test. The radiant panel test chamber must be an enclosure 55-inches (1397 mm) long by 19.5 (495 mm) deep by 28 (710 mm) to 30-inches (maximum) (762 mm) above the test specimen. Insulate the sides, ends, and top with a fibrous ceramic insulation, such as Kaowool MTM board. On the front side, provide a 52 by 12 inches (1321 by 305 mm) draftfree, high-temperature, glass window for viewing the sample during testing. Place a door below the window to provide access to the movable specimen platform holder. The bottom of the test chamber must be a sliding steel platform that has provision for securing the test specimen holder in a fixed and level position. The chamber must have an internal chimney with exterior dimensions of 5.1-inches (129 mm) wide, by 16.2-inches (411 mm) deep by 13- inches (330 mm) high at the opposite end of the chamber from the radiant energy source. The interior dimensions must be 4.5-inches (114 mm) wide by 15.6-inches (395 mm) deep. The chimney must extend to the top of the chamber (see figure 2).
½ in. (13 mm) Kaowool M board 16 gauge (1/16 in. 1.6mm) aluminum sheet metal 1/8 in. (3.2 mm) angle iron 15 9/16 In (394 mm) (114 mm) 4 ½ in 13 in.
(330 mm) 5 1/8 in.
(130 mm) 16 3/16 in.
(411 mm) Figure 2 - Internal Chimney
(2) Radiant heat source. Mount the radiant heat energy source in a cast iron frame or equivalent. An electric panel must have six, 3--inch wide emitter strips. The emitter strips must be perpendicular to the length of the panel. The panel must have a radiation surface of 12-7/8 by 18-1/2 -inches (327 by 470 mm). The panel must be capable of operating at temperatures up to 1300 degree F (704 degree C). An air propane panel must be made of a porous refractory material and have a radiation surface of 12 by 18-inches (305 by 457 mm).
732 The panel must be capable of operating at temperatures up to 1,500 degree F (816 degree C). See figures 3a and 3b.
(i) Electric radiant panel. The radiant panel must be 3-phase and operate at 208 volts. A single-phase, 240 volt panel is also acceptable. Use a solid-state power controller and microprocessor- based controller to set the electric panel operating parameters.
(ii) Gas radiant panel. Use propane (liquid petroleum gas-2.1 UN 1075) for the radiant panel fuel. The panel fuel system must consist of a venturi-type aspirator for mixing gas and air at approximately atmospheric pressure. Provide suitable instrumentation for monitoring and controlling the flow of fuel and air to the panel. Include an air flow gauge, an air flow regulator, and a gas pressure gauge.
(iii) Radiant panel placement. Mount the panel in the chamber at 30 degree to the horizontal specimen plane, and 7-1/2-inches above the zero point of the specimen.
(3) Specimen holding system.
(i) The sliding platform serves as the housing for test specimen placement. Brackets may be attached (via wing nuts) to the top lip of the platform in order to accommodate various
734 thicknesses of test specimens. Place the test specimens on a sheet of Kaowool MTM board or 1260 Standard Board (manufactured by Thermal Ceramics and available in Europe), or equivalent, either resting on the bottom lip of the sliding platform or on the base of the brackets. It may be necessary to use multiple sheets of material based on the thickness of the test specimen (to meet the sample height requirement). Typically, these non-combustible sheets of material are available in 1/4-inch (6 mm) thicknesses. See figure 4. A sliding platform that is deeper than the 2-inches (50.8mm) platform shown in figure 4 is also acceptable as long as the sample height requirement is met.
(ii) Attach a 1/2-inch (13 mm) piece of Kaowool MTM board or other high temperature material measuring 41-1/2 by 8-1/4-inches (1054 by 210 mm) to the back of the platform. This board serves as a heat retainer and protects the test specimen from excessive preheating. The height of this board must not impede the sliding platform movement (in and out of the test chamber). If the platform has been fabricated such that the back side of the platform is high enough to prevent excess preheating of the specimen when the sliding platform is out, a retainer board is not necessary.
(iii) Place the test specimen horizontally on the non- combustible board(s). Place a steel retaining/securing frame fabricated of mild steel, having a thickness of 1/8-inch (3.2 mm) and overall dimensions of 23 by 13-1/8 -inches (584 by 333 mm) with a specimen opening of 19 by 10-3/4 -inches (483 by 273 mm) over the test specimen. The front, back, and right portions of the top flange of the frame must rest on the top of the sliding platform, and the bottom flanges must pinch all 4 sides of the test specimen. The right bottom flange must be flush with the sliding platform. See figure 5.
(4) Pilot Burner. The pilot burner used to ignite the specimen must be a BernzomaticTM commercial propane venturi torch with an axially symmetric burner tip and a propane supply tube with an orifice diameter of 0.006-inches (0.15 mm). The length of the burner tube must be 2- 7/8 -inches (71 mm). The propane flow must be adjusted via gas pressure through an in-line regulator to produce a blue inner cone length of 3/4-inch (19 mm). A 3/4-inch (19 mm) guide (such as a thin strip of metal) may be soldered to the top of the burner to aid in setting the flame height. The overall flame length must be approximately 5-inches long (127 mm). Provide a way to move the burner out of the ignition position so that the flame is horizontal and at least 2- inches (50 mm) above the specimen plane. See figure 6.
(5) Thermocouples. Install a 24 American Wire Gauge (AWG) Type K (Chromel-Alumel) thermocouple in the test chamber for temperature monitoring. Insert it into the chamber through a small hole drilled through the back of the chamber. Place the thermocouple so that it extends 11-inches (279 mm) out from the back of the chamber wall, 11-1/2 -inches (292 mm) from the right side of the chamber wall, and is 2-inches (51 mm) below the radiant panel. The use of other thermocouples is optional.
(6) Calorimeter. The calorimeter must be a one-inch cylindrical water-cooled, total heat flux density, foil type Gardon Gage that has a range of 0 to 5 BTU/ft2 -second (0 to 5.7 Watts/cm2).
(7) Calorimeter calibration specification and procedure.
(i) Calorimeter specification.
(A) Foil diameter must be 0.25 ±0.005-inches (6.35 ±0.13 mm).
(B) Foil thickness must be 0.0005 ±0.0001-inches (0.013 ± ;0.0025 mm).
(C) Foil material must be thermocouple grade Constantan.
(D) Temperature measurement must be a Copper Constantan thermocouple.
(E) The copper center wire diameter must be 0.0005-inches (0.013 mm).
(F) The entire face of the calorimeter must be lightly coated with "Black Velvet" paint having an emissivity of 96 or greater.
(ii) Calorimeter calibration.
(A) The calibration method must be by comparison to a like standardized transducer.
(B) The standardized transducer must meet the specifications given in paragraph VI(b)(6) of this appendix.
737 (C) Calibrate the standard transducer against a primary standard traceable to the National Institute of Standards and Technology (NIST).
(D) The method of transfer must be a heated graphite plate.
(E) The graphite plate must be electrically heated, have a clear surface area on each side of the plate of at least 2 by 2-inches (51 by 51 mm), and be 1/8 -inch ± 1/16 -inch thick (3.2 ± 1.6 mm).
(F) Center the 2 transducers on opposite sides of the plates at equal distances from the plate.
(G) The distance of the calorimeter to the plate must be no less than 0.0625-inches (1.6 mm), nor greater than 0.375-inches (9.5 mm).
(H) The range used in calibration must be at least 0-3.5 BTUs/ft2 second (0-3.9 Watts/cm2) and no greater than 0-5.7 BTUs/ft2 second (0-6.4 Watts/cm2).
(I) The recording device used must record the 2 transducers simultaneously or at least within 1/10 of each other.
(8) Calorimeter fixture. With the sliding platform pulled out of the chamber, install the calorimeter holding frame and place a sheet of non-combustible material in the bottom of the sliding platform adjacent to the holding frame. This will prevent heat losses during calibration.
The frame must be 13-1/8-inches (333 mm) deep (front to back) by 8-inches (203 mm) wide and must rest on the top of the sliding platform. It must be fabricated of 1/8-inch (3.2 mm) flat stock steel and have an opening that accommodates a 1/2-inch (12.7 mm) thick piece of refractory board, which is level with the top of the sliding platform. The board must have three 1-inch (25.4 mm) diameter holes drilled through the board for calorimeter insertion. The distance to the radiant panel surface from the centerline of the first hole ("zero" position) must be 7-1/2 ± 1/8 - inches (191 ±3 mm). The distance between the centerline of the first hole to the centerline of the second hole must be 2-inches (51 mm). It must also be the same distance from the centerline of the second hole to the centerline of the third hole. See figure 7. A calorimeter holding frame that differs in construction is acceptable as long as the height from the centerline of the first hole to the radiant panel and the distance between holes is the same as described in this paragraph.