A-A-52078C
4.3.1.1 Durability test. Using standard commercial unleaded gasoline, the lantern shall run at maximum output for a minimum of 40 hours of continuous operation without requiring any maintenance or parts replacement. Mantles may be replaced if they are defective or damaged. The lantern may be repressurized no more than once every 4 hours. The lanterns shall be pressurized per the manufacturer's instructions.
4.3.1.2 Candle power test. After 40 hours of operation, a candle power test shall be taken. The lantern shall not be cleaned and no parts replaced. Mantles may be replaced if they become damaged (if a tear appears in the fabric). The candle power shall be tested with a light meter, using the light meter manufacturer's instructions. The lantern brightness shall be a minimum of
250 candle power. The lantern shall be repressurized prior to the candle power test.
4.3.1.3 Burner tip cleaner test. The burner tip cleaning device shall be manipulated a minimum of 10 times during and after durability testing. Inability to unclog the burner tip shall constitute failure of this test.
4.3.1.4 Low temperature test.
4.3.1.4.1 Lantern. The lantern shall be filled per the manufacturer's instructions. The lantern shall then be placed in low temperature chamber. The temperature shall then be lowered to
-60 °F. The lantern shall remain in the chamber at -60 °F for 8 hours. The lantern shall then be lit per the manufacturer's instructions and remain in the chamber for 1 hour. No more than three attempts shall be made to light the lantern. Inability to light the lantern or inability of the lantern to remain lit shall constitute failure of this test.
4.3.1.4.2 Carrying case. The carrying case shall be placed in a low temperature chamber. The temperature shall then be lowered to -40 °F. The carrying case shall remain in the chamber at
-40 °F for 8 hours. The sides of the carrying case shall then be opened and closed 10 times. After the ninth time the lantern shall be placed in the case. Failure of the case to close or to function as a carrying case shall constitute a failure of this test.
4.3.1.5 Safety and operational instructions. The safety and operational instructions shall be inspected for legibility. The safety and operational instructions shall provide enough information to safely operate the lantern.
4.3.1.6 Packaging. The packaging shall be inspected to determine if proper protection is provided. Particular attention shall be paid to the cushioning for the globe.
4.4 Metric products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest revision of FED-STD-376, "Preferred Metric Units for General Use by the Federal Government", and all other requirements of this Commercial Item Description are met. If a product is manufactured to metric dimensions and those dimensions exceed the tolerances specified in the inch-pound units, a request should be made to the contracting officer to determine if the product is acceptable. The contracting officer has the option of accepting or rejecting the product.
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