MIL-PRF-14442E(AT)
3.3.1 Installation. The location of all fittings and the tank dimensions needed for
installation shall be within the allowable tolerances specified on the applicable drawings.
3.3.2 Stand. The fuel tank shall show no evidence of leakage as a result of standing.
3.3.3 Fuel contamination. The nonvolatile material, for a sample of the inner layers of
fuel tank, shall not exceed 60 milligrams (mg) per 100 milliliters (ml) of the contaminated fluid.
The stoved gum residue shall not exceed 20 mg per 100 ml of the contaminated fluid.
3.4 Environmental.
3.4.1 Humidity (hydrolytic stability) at elevated temperature. The specimen shall show no
corrosion, peeling, cracking, warping, blistering, delamination, or discoloration as a result of
exposure to high humidity at elevated temperatures.
3.4.2 Humidity (hydrolytic stability) at room temperature. The specimen shall show no
visible cracks, blisters or eruptions after exposure to high humidity at room temperature.
3.4.3 Low temperature leakage. The fuel tank shall show no evidence of leakage as a
result of exposure to low temperatures.
3.5 Support and ownership.
3.5.1 Hazardous materials. The fuel tank shall not produce any hazards to personnel or
the environment resulting from the use of asbestos or cadmium.
3.5.2 Protective treatments.
3.5.2.1 Fittings. Fittings shall be corrosion resistant or appropriately treated for corrosion
resistance.
3.5.2.2 Openings. All openings to tanks shall be fitted with fully cured Buna-N or equally
fuel resistant material which shall be resistant to cutting, and to gouging as a result of sealing
pressure generated by torquing hold-down bolts.
3.5.3 Access opening. Each fuel tank shall be provided with a hand hole and cover to
permit arm access to the tank interior for inspection and repair.
3.5.4 Handling. The fuel tank shall show no evidence of cracks, loosening of fittings, or
failure of seams when it is folded and unfolded 40 times in accordance with standard procedure
for shipment.
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