MIL-DTL-22653D(OS)
that verify critical characteristics are identified by the symbol (C) and major characteristics by the
symbol (M). The number following the classification symbol indicates the serial number of the test or
examination. Tests and examinations which are not annotated with a classification code are classified
minor.
4.5 Tests.
4.5.1 Insulation resistance. Prior to assembly of the bridgewire in the inner cup and electrode assembly
the insulation resistance shall be checked with a 500-volt megohmmeter. Units with resistance of less
than 50 megohms shall be cause for rejection.
TABLE II. Quality conformance sample size.
Lot size
Sample size
Retained sample
66 - 110
15
10
111 - 180
15
10
181 - 300
20
10
301 - 500
25
10
501 - 800
30
10
801 - 1300
35
10
1301 - 3200
40
10
3201 - 8000
50
10
8001 - 22000
75
10
4.5.2 Smokeless powder, condition. Smokeless powder shall be inspected in accordance with the
applicable paragraphs of OP 5. Evidence of decomposition shall be cause for rejection.
4.5.3 Visual examination. All cartridges shall be visually examined. Cartridges having any of the
defects of 3.13 shall be cause for rejection. The preservation-packaging, packing, and marking of the
cartridges shall be examined for conformance to section 5.
4.5.4 Bridgewire resistance. Conformance with the bridge circuit resistance of 3.10.1 shall be
ascertained on all completely assembled cartridges by means of a test circuit which limits the bridge
circuit current to 50 milliamperes, maximum. A safety chamber with an interlock switch shall be used to
protect the operator during the application of current. A suitable instrument which is known to be
accurate to within 0.005 ohm in the range of resistance specified shall be used to determine whether or
not the requirement is being met. Units which fail to meet the requirements of 3.10.1 shall be cause for
rejection. The results of bridge circuit resistance measurements shall not be affected by resistance of the
test circuit and connector.
4.5.5 Leakage. Each cartridge in the first article or production sample shall be leak tested in a dry gas
leak tester. Cartridges which exhibit a leak rate greater than 10-5 cc per second of air at a pressure
differential of 1±0.1 atmosphere shall be considered defective. Cartridges of the first article sample
which exhibit a leakage defect shall be cause for rejection. If cartridges of the production lot sample
exhibit a leakage defect (see 6.4), then a 100 percent leak test of the lot being tested shall be required at
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