MIL-DTL-82929A(OS)
Test Sample Size
Retained Sample Size
Cartridge Output Gap Test Sample
Lot Size
Up to 50
12
2
2
51 to 200
18
3
4
201 to 500
24
4
6
4.3 Inspections and tests.
4.3.1 Cartridge output gap test. Prior to assembly of initiators, a random sample of cartridges,
selected per table III, shall be subjected to ambient temperature gap testing. Cartridge assembly
explosive output shall be capable of detonating SMDC test tips across an air gap which is four times the
maximum production gap of the initiator. Failure of any cartridge to meet the requirement of 3.3.1.1
shall result in rejection of the cartridge lot.
4.3.2 Visual inspections.
4.3.2.1 Initiator and delay cartridge assembly visual inspection. Each delay cartridge assembly and
all assembled initiators shall be visually examined. Reject those with inadequate or illegible descriptive
markings or serial numbers, dents, deep scratches, or other defects which may prevent proper installation
or function.
4.3.2.2 Packaging inspection. The condition of the packaging (inner containers), packing (outer
container), and markings shall be determined by comparison to the requirements of section 5.
4.3.3 Delay cartridge assembly leak test. Each delay cartridge assembly produced under contract shall
be leak tested in a dry gas leak tester to determine conformance with 3.3.1.3. Units which exhibit a leak
rate in excess of 1 x 10-5 standard cc/sec of air at a pressure differential of 1.0 ± 0.1 atmosphere shall be
rejected.
4.3.4. Radiographic examination.
4.3.4.1 Delay cartridge assembly examination. Radiographic examination of delay cartridge
assemblies shall include x-ray in accordance with ASTM E 1742 and n-ray in accordance with ASTM E
545. All delay cartridge assemblies shall be identified with serial numbers beginning with 001 prior to
examination. The delay cartridge assemblies shall be arranged on trays or boards in consecutive
numerical order with any missing serial numbers identified on the radiographic plate. The delay
cartridge assemblies shall be positioned for the most revealing exposure with the long axis perpendicular
to the radiographic beam. Each radiograph shall carry a permanent identification of the items displayed
thereon in a 4 x 6 inch region maximum. The radiographic identification shall include the drawing
number, the complete lot number, the contract number, the DODIC, and the span of serial numbers
displayed. Radiographs of the entire production lot shall accompany the ballistic sample to the activity
conducting the tests (see 6.2). Any observable imperfections as outlined in 3.3.1.4 shall be cause for
rejection of the delay cartridge assemblies. Defective delay cartridge assemblies found during
radiographic review are to be marked on the radiographic plate and removed from the production lot.
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