MIL-DTL-82901A(OS)
prior to the start of production. Failure of the first article sample to pass this inspection shall be cause for
rejection of the first article sample. Any production prior to acceptance of the first article sample is at the
risk of the contractor.
4.4.2 First article sample. The sample shall consist of two sets of representative explosive material
selected from a minimum batch size of 225 kilograms. A sample set shall contain approximately 2000 g of
explosive. A set shall be composed of two specimens of explosive, one selected from the first third of the
batch another separate specimen selected from the final third of the batch. A batch is defined as that
quantity of material that has been subjected to one or more chemical or physical processes (or combination
thereof) in a single mix intended to produce a desired product having substantially uniform characteristics.
4.5 Conformance inspection. Conformance inspection shall consist of the tests specified in 4.6.1
through 4.6.5. The quality conformance sample shall be the same as that of 4.4.2 except that it shall
consist of one set. Uncured material for analysis shall be selected from the same containers from which the
cast samples are poured. Explosive failing to meet any of the requirements of 3.4 when tested in
accordance with 4.6.1 through 4.6.5 shall be classified defective, resulting in the rejection of the batch
from which it was obtained.
4.5.1 Sample identification. Each explosive sample container and specimen shall be marked with
the following information:
a.
Complete explosive designation
b.
Lot number
c.
Weight of the lot
d.
Manufacturer's name and plant designation
e.
Contract number
f.
Date of manufacture and sampling
4.5.2 Lot Size. An inspection lot of PBXN-110 is equal to one batch as defined in 4.4.2.
4.6 Test methods. All explosive specimens used in the tests of 4.6.1 through 4.6.5.1 and 4.6.6 shall
be cured to a constant Shore A hardness meeting the requirements of 3.3.1.
4.6.1 Density.
4.6.1.1 Samples. Density shall be determined on two samples cut from two separate cured test
specimens (one sample taken from the beginning of the pour and one sample taken from the end of the
pour). Each sample should weigh between 10 and 20 g.
4.6.1.2 Density determination. The density of the sample shall be determined on an analytical
balance equipped for underwater weighing. The sample shall be weighed to an accuracy of 0.1 milligram,
first in air then in water.
4.6.1.3 Density calculation. The density shall be calculated according to the following formula:
Wa
D=
x Dw
-W b
Wa
6
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