MIL-DTL-46594C(AR)
4.3.3 Test Methods and Procedures.
4.3.3.1 Specific gravity of booster. 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 accurate to 0.1 grams 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 inside the detonator well and remaining on the
surfaces of the booster. The temperature of the water shall be not less than 66 degrees
Fahrenheit (oF) and not more than 70 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 _ ___
x Specific gravity of H20
Specific gravity =
at noted temperature
(Weight of booster dry) minus
(see Table III).
(Weight of booster immersed in
water)
Table III. Specific gravity of water within 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. A sample of 25 shaped charges shall be selected from each lot
and weighed on a scale capable of determining weights within an accuracy of two (2) ounces.
The average weight of 30 metal parts assemblies shall be subtracted from each individual weight
to determine compliance with the requirement. Any unit failing to meet the weight requirements
shall be classed defective.
4.3.3.3 Radiographic examination. Radiographic examination shall be conducted on the
First Article samples that are to be subjected to the Functioning Test (see 4.3.2.5, Major 106),
prior to the execution of the Functioning Test. The First Article sample of five (5) test units 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 (see 6.5).
Radiographic personnel shall be qualified in accordance with NAS 410. Complete results shall
be available to the Government (see 6.5).
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