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Page Title:
Intermediate packaging/packing. |
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|  MIL-C-70725A (AR)
5.2.1 Unit package. Thirty cartridges shall be packed in a
unit package (i.e., fiberboard/paperboard box).
5.2.2 Intermediate packaging/packing. The development of
the intermediate packaging/packing shall take into Consideration
the requirements listed in 5.2 and the requirements to pass the
test listed in 5.2.3. The quantity of cartridges in the inter-
mediate packing boxes shall be 1200. The intermediate packing
boxes shall meet the requirements of PPP-B-636. Two intermediate
packs shall be packed in a bag per Method 1A of MIL-P-116 and
placed in an outer package. The outer pack shall meet the
requirements of PPP-B-636, class - Weather Resistant.
5.2.3 Tests. In order to insure packaging performance,
tests as identified below from drawing 8837375 shall be performed
on the outer package by the contractor and witnessed by the
Government.
5.2.3.1 Temperature conditioning. Tests shall be performed
at +160F, +70F (ambient and -65F. Except for +70F, the
packaged ammunition shall be conditioned for a minimum of 16
hours immediately prior to each test. During the performance of
the test the temperature requirement shall be met by (a) using
portable conditioning equipment where the ambient air temperature
is maintained for the duration of the random vibration tests or
(b) conditioning the items and testing as quickly as possible
after removal from the conditioning chamber to maintain the
specified temperature level as close as possible to the required
level for the shock tests.
5.2.3.2 Test Sample. Twelve loaded boxes (outer packages)
shall be considered a test sample. Unless otherwise specified,
at each temperature, two boxes shall be subjected sequentially to
random vibration tests (Figures 1, 2 and 3 in Appendix A) on
three mutually perpendicular axes, and tests 2 (free fall drop),
13 (seven-foot drop) and 14 (loose cargo) in accordance with
drawing 8837375. The remaining six boxes shall be subjected to a
forty-foot drop test, test 12, in accordance with drawing 8837375
with two boxes dropped at each temperature. Orientation of the
boxes for the test shall be as specified on drawing 8837375.
5.2.3.3 Criteria for passing tests.
5.2.3.3.1 Physical condition. At the conclusion of the
random vibration tests, test 2, test 14 and test 13, the packaged
ammunition shall be safe to handle and operable. The decision
that the ammunition has met or failed to meet "safe" and
"operable" is based upon the firing of the ammunition in the
applicable weapons. Mechanical or physical damage to the
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