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|  MIL-B-53090(ME)
d. Wait ten seconds minimum. Grasp a free end of the tape and at a rapid speed strip it from the
painted surface by pulling the tape back upon itself at 180 degrees.
The removal of two or more squares of top coat, top coat primer or top coat primer pre-treatment coating
on either test surface constitute test failure and the Ml MCBS is rejected. Removal of over spray does riot
constitute test failure.
4.8 Inspection of packaging.
4.8.1 Quality conformance inspection of packaging.
4.8.1.1 Unit of product. For the purpose of inspection, a completed pack prepared for shipment shall
be considered a unit of product.
4.8.1.2 Level of inspection. Each mine clearing blade shall be examined for the following defects.
AQL shall be 1.0 percent defective.
122. Preservation not as specified for level A or level C, (see 5.1).
123. Packing not as specified for level A or level C, (see 5.2).
124. Marking incorrect, illegible or missing, (see 5.3).
4.9 Transportability test.
4.9.1 Tiedown provisions. The tiedown provisions shall be tested in accordance with MIL-STD-209
to prove conformance to 3.19.1. Inability to meet the requirements of 3.19.1 shall constitute failure of this
demonstration.
4.9.2 Slinging provisions. The slinging provisions shall be tested in accordance with MIL-STD-209 to
prove conformance to 3.19.2. Inability to meet the requirements of 3.19.2 shall constitute failure of this
demonstration.
4.9.3 Rail impact test. The first article mine clearing blade shall be tested in accordance with the
following rail impact test procedure.
Step 1. From one to five railcars shall be positioned on a level section of track. The following
conditions shall be satisfied:
a.
The total weight of the car(s) shall be at least 250,000 pounds (114, 00 hg).
b.
The couplers between any cars shall be compressed to take up any slack.
c.
All of the air and hand brakes on the car(s) used shall be set.
d.
Any load in or on the car(s) shall be secured to prevent sliding or shifting; any movement
greater than 1.97 inches (5 centimeters) shall be justification for retest.
e. The end of the buffer car to be struck must have a standard draft gear.
Step 2. Mount the test item on the test car. The test car shall be equipped with standard draft gears
and conventional under frames. Mounting of the test item shall incorporate the standard loading and
bracing method as shown in section 6 of the Association of American Railroads (AAR) "Rules Governing
the Loading of Department of Defense Materiel on the Open Top Cars." No exotic or unusual tiedown
methods shall be used; any non-standard loading and bracing must be approved by the Military Traffic
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