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4.7.1. After consolidation of the primer composition, the subassembly shall be dried in accordance with
Drawing 2302224.
3.7 Insulation resistance. The insulation resistance between shorted electrodes (connector pins) and
receptacle of each completely assembled ignition element shall be a minimum of 20 megohms when
tested in accordance with 4.7.3 at a relative humidity of 80 percent or less.
3.8 Ignition and primer compositions, compounding and loading. The ignition compositions and the
primer composition shall be compounded in accordance with the applicable drawings, and shall be
loaded in accordance with Drawings 2519610 and 2302224, respectively.
3.9 Propellant charges.
3.9.1 Quantity. All propellant charges shall be as specified on Drawing 2302224. Charges shall be
determined by weight rather than by volume measurements.
3.9.2 Smokeless powder, handling and loading. Do not subject the smokeless powder to unnecessary
handling or exposure to the atmosphere. The handling and loading of smokeless powder exposed to the
atmosphere shall be performed only under conditions that do not permit the relative humidity to exceed
75 percent.
3.9.2.1 Smokeless powder, condition. The smokeless powder utilized shall exhibit no evidence of
decomposition. (See 4.7.2.)
3.10 Ignition element inspection.
3.10.1 Visual inspection. Ignition elements shall be free of the following visible defects: chips, burrs
rough edges, incomplete threads, improper crimp, perforated closure disc, or any other imperfections
which could, harmfully affect either assembly or functioning. (See 4.7.6.)
3.10.2 Bridge circuit resistance. The resistance of the bridge circuit in each completely assembled
ignition element, when measured electrically as specified in 4.7.5, shall be not less than 1.0 ohm nor
more than 1.2 ohms.
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cc of air or gas per second, when
3.10.3 Leakage. Ignition element leakage rate shall not exceed 10
tested in accordance with 4.7.7.
3.10.4 X-ray. Ignition elements shall be free, of the following defects when examined by X-ray in
accordance with 4.7.4: improper assembly of components, charges or inert components missing, or any
other imperfections which could adversely affect performance.
3.11 Tests.
3.11.1 Electric sensitivity.
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