MIL-DTL-2156D
4.3.3 Test Methods and Procedures.
4.3.3.1 Specific gravity of booster. (See Dwg. 8858393) A sample of five (5) boosters
shall be selected from each lot for this test. If any booster fails to meet the requirement specified,
the lot shall be rejected. The booster shall be weighed on a balance and the weight recorded as
dry weight. The booster shall then be weighed while completely submerged in water, taking care
to remove all air bubbles remaining on the surfaces of the booster. The temperature of the water
shall be 68 degrees Fahrenheit (oF) +/- 2 oF. This weight shall be recorded as weight under water.
(When submerged, the position of the booster shall be such that no air is entrapped.) Specific
gravity shall be calculated as follows:
______ei__________er_dry _____
W _ ght of boost _ ___
Specific gravity of H2O
x
Specific gravity =
at test temperature (see
(Weight of booster dry minus
Table III)
Weight of booster immersed in
water)
Table III. Specific gravity of water in test temperature range.
Temp °F
Temp °C
Specific Gravity of H2O
66
18.89
0.9984
67
19.44
0.9983
68
20.00
0.9982
69
20.56
0.9981
70
21.11
0.9980
4.3.3.2 Weight of charge and average weight. The loading assembly shall be weighed on
a scale capable of determining weights within an accuracy of two (2) ounces. The average weight
shall be obtained from twenty-five (25) parts assemblies (dwg. 8861569) and subtracted from the
weight of the loading assembly (dwg. 8861565) to determine compliance with the requirement.
Any assembly failing to meet the weight requirement shall be classed defective and the lot shall
be rejected.
4.3.3.3 Radiographic examination. Radiographic examination shall be conducted on the
first article samples (see 4.2.2.2) that are to be subjected to the Functioning Test prior to the
execution of the Functioning Test. Ten (10) test units shall be selected from each lot. The first
article sample shall be subjected to radiographic examination for detection of voids, cracks, and
foreign material. Examinations of the radiograph shall be made to determine excessive
cavitation, separation, and cracking of the explosive and presence of any foreign material.
Radiographic equipment, operations and procedures shall be qualified in accordance with ASTM
E 1742. Radiographic personnel shall be qualified in accordance with NAS 410.
4.3.3.4 Functioning test. Ten (10) test units shall be selected from each lot. The test shall
be detonated using a M6 or M7 blasting cap or equivalent military initiation device. Any test unit
which fails to detonate high order shall be classified as defective. After three (3) consecutive lots
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