MIL-DTL-24688A
TABLE VI. Qualification inspection - Continued.
Inspection
Requirement
Test
Thermal conductivity
Type I and Type II
Type III
Upper temperature limit
Type I, Type II, and Type III
Flame resistance
Type I and Type II, Classes 1, 2, and 5
Duct insulation room/corner test
Type II, Classes 3 and 4
Flame spread and smoke
Type I
Type II, all classes
Type III, Classes 1, 3, and 5
Type III, Classes 2, 4, and 6
Pipe insulation room/corner test
Type III, all classes
Toxic gas generation
Type I, Type II, and Type III
Steam aging
Type I and Type III, Classes 1, 3, and 5
Fungus resistance
Type I and Type III
Odor
Type I and Type III
Toxicity
Type I, Type II, and Type III
Off-gassing (submarine use only)
Type I, Type II, and Type III
Identification markings
4.2.1 Qualification sample. The qualification sample shall be taken from a production lot of material and shall
consist of enough panels or preformed pipe insulation to perform all tests as required in table VI.
4.3 Conformance inspection. Conformance inspection shall be as specified in table VII, 4.3.1, and 4.3.2.
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