/+.&6.
15
inspection. Test sample cartridges and samples retained for investigative purposes shall not be applied as
part of the quantity specified for delivery by the contract or purchase order.
TABLE IV. Lot acceptance sampling.
Lot Size
Test Sample Size
Retained Sample Size
2 - 50
9
3
51 - 100
12
3
101 - 150
21
3
151 - 300
33
3
4.3 Inspections and tests.
4.3.1 Visual inspections.
4.3.1.1 Cartridge inspection. The external condition and appearance of the cartridge shall be
determined by comparison to Drawing 850AS895. Each cartridge shall meet the requirements of 3.4.1
and 3.6.
4.3.1.2 Packaging inspection. The condition of the packaging (inner container), packing (outer
container), and markings shall be determined by comparison to the requirements of section 5.
4.3.2 Radiographic inspection. All cartridges shall be identified with serial numbers beginning with
001 prior to examination. The cartridges shall be arranged on boards or trays in consecutive order with
any missing serial numbers identified on the radiographic plate. Each radiograph shall carry a permanent
identification of the items displayed thereon in a 4 × 6 inch region, maximum. The radiographic
identification shall include the drawing number, the complete lot number in accordance with MIL-STD-
1168 for the cartridge, the contract number, and the span of serial numbers displayed. Radiographs of the
entire production lot shall accompany the ballistic sample to the activity conducting the tests. Any
observable imperfections as outlined in 3.4.2 shall be cause for rejection of the cartridge. Defective
cartridges found during radiographic reviews are to be marked on the radiographic plate and removed
from the production lot.
4.3.2.1 N-Ray examination. Each cartridge shall be N-rayed in accordance with ASTM E 748 and the
plates examined for defect.
4.3.2.2 X-Ray examination. Each cartridge shall be X-rayed in accordance with MIL-STD-453 and the
plates examined for defect.
4.3.3 Leakage test. Leakage shall be measured after bombing the cartridge in Helium gas for 60 +1.0,
!0.0 minutes at a pressure of 2 +0.1, !0.0 atmospheres absolute and venting with air for 10 +2, !0
minutes or washed with dry nitrogen. The cartridge shall then be tested in a dry gas leak tester. Each
cartridge shall meet the requirements of 3.4.3.
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