MIL-DTL-6396F
b. The tank shall be completely filled with test fluid.
The tank shall be vibrated for 10 minutes using the applicable test conditions specified.
4.5.8 Slosh.
4.5.8.1 Phase I slosh. A test cube (tank) shall be tested in accordance with the procedure
specified in 4.5.6.1.7 except that this cube shall not be subjected to vibration. The cube shall be
sloshed for at least 25 hours at 16 to 20 cpm. Type III cubes shall be supported in a manner
specified by the contractor or procuring activity. Type II cubes shall be installed in the gun fire
test structure with the test structure rigidly mounted to the slosh table. For Type II, Class C
cubes, the backing board on the four sides shall be removed so that the sides of the cube are
supported by the hat sections of the structure.
4.5.8.2 Phase II slosh (Type II, Class A and B tanks only). A tank shall be tested in
accordance with the procedure specified in 4.5.6.1.7 except that the tank shall not be subjected to
vibration. The tank shall be sloshed for at least 25 hours at 16 to 20 slosh cpm, or at least 40
hours at 10 to 16 slosh cpm or as specified by the procuring activity.
4.5.9 Stand test (phase I). The stand test shall be conducted on the second test cube. Type II
test cubes (tanks) shall be installed in a test structure which has been lined with brown paper.
For Class C cubes, the backing board for the four side panels shall be omitted so that the cube is
draped across the hat section in this area. Type III cubes shall be covered with brown paper and
tested in an unsupported condition. The cubes shall be filled with the applicable test fluid as
specified in 4.4.1 and table IV containing a staining agent. After 90 days there shall be no
evidence of leakage or other failure. An alternate method of detecting leakage is acceptable, if
approved by the procuring activity.
4.5.10 Humidity. Samples of the composite construction, the inner liner ply and the outer
ply shall be subjected to a relative humidity of 95 ±2 percent and a minimum temperature of
160 °F (71 °C) for 30 days. The following criteria shall be used to determine durability of the
samples following the test:
a. Composite construction There shall be no corrosion, peeling, cracking, warping,
blistering, delamination or discoloration.
b. Inner liner and outer ply samples, allowable change from original properties:
tensile strength - ±45 percent
elongation
- ±30 percent
shore A hardness - ±15 percent
18
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business