A-A-52022A
3.2 Materials. Two component adhesives shall be provided in pre-measured containers. The pre-measured containers shall enable the user to mix the proper proportions of each component to form the appropriate adhesive compound for type I, type II and type III repair outfits.
3.3 Adhesive properties.
3.3.1 Cured repair patch (diesel). The peel adhesion between a cured repair patch and a coated fabric sample shall be 30 pounds per inch (lbs/in.) (13.6 kilograms (kg) per 25 millimeters (mm)) minimum when tested in accordance with ASTM D413 (machine method, 180 degrees). The coated fabric shall be a virgin sample which is contaminated by soaking in diesel fuel
conforming to MIL-DTL-46162 for seven days at room temperature and wiping dry. The coated fabric surface shall then be cleaned and prepared before applying the repair patch. All four exposed edges of the test sample shall be protected from the diesel fuel during soaking.
3.3.2 Cured repair patch (JP-8 or Jet A). The peel adhesion between a cured repair patch and an aged coated fabric sample shall be 15 lbs/in. (6.8 kg/25 mm) minimum when tested in
accordance with ASTM D413 (machine method, 180 degrees). The coated fabric shall be a virgin sample that is aged by soaking in JP-8 or Jet A-1 for 14 days at 160 degrees Fahrenheit (°F) (71.1 degrees Celsius (°C)), then 42 days in distilled water. The coated fabric surface shall then be cleaned and prepared before applying the repair patch. All four exposed edges of the test sample shall be protected from the fuel during soaking.
3.4 Operating conditions. The repair outfit shall be capable of making a repair outdoors in dry weather between 40°F (4.4°C) and 80°F (26.7°C). The repaired section of a tank, drum, or berm liner shall have as a minimum the same resistance to damage and leakage as the unrepaired section of fabric when operating under the following conditions:
a. Operational use of the equipment at ambient temperatures from -25°F (-31.7°C) to
+125°F (+51.7°C).
b. Folded storage of the equipment at ambient temperatures from -30°F (-34.4°C) to
+160°F.
c. Continuous contact with rainwater and ground water. d. Contact with fuel.
3.5 Components. Each repair outfit shall be equipped with all the tools and materials required to make a repair. As a minimum, the repair outfit shall consist of the following:
a. |
Patches (compatible for use with fuel or water, as appropriate)…….. |
2 each |
b. |
Surface roughing tool………………………………………………….. |
1 each |
c. |
Hand-held roller………………………………………………...……… |
1 each |
d. |
Adhesive…………………………………………………………...…… |
2 each |
e. |
Stirring stick or spatula……………………………………………...…. |
2 each |
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