MIL-I-60231B(OS)
4.4 First article inspection. At the beginning of regular production, the contractor shall submit a first article sample to the Government approved facility for evaluation. The sample shall consist of 112 ignition
elements, 10 sets of parts, and 5 inert body assemblies. The sample shall be subjected to the tests in 4.5.3.
Test procedures shall be in accordance with 4.6. The first article sample shall be manufactured using the same materials, equipment, processes, and procedures as used in regular production. All parts and materials, including packaging and packing, shall be the same as used for regular production and shall be obtained from the same source of supply. The contractor shall inspect the sample in accordance with his inspection system. The Government reserves the right to require new first article samples until such time as an acceptable
sample is submitted (see 6.5).
4.4.1 Examination, tests, and facility. After provisional acceptance at source, the sample shall be inspected for all requirements of the drawings and specifications at a Government laboratory or other such facility specified in the contract (see 6.2).
4.5 Quality conformance inspection.
4.5.1 Lot.
4.5.1.1 Submission of product. Unless otherwise specified by the contracting activity, formation and identification of lots shall be in accordance with MIL-STD-105.
4.5.1.2 Lot size. The production lot size shall be as specified in the contract (see 6.2). The maximum lot size allowed is 2400 exclusive of test samples and shall consist of:
a. Components produced by a homogeneous process
b. Body assemblies (metal-to-ceramic seal) which have been heated in a furnace with the same process control
c. Primer mixtures from not more than one lot
d. Loading produced by a homogeneous process
4.5.2 Examination. One hundred percent examination shall be performed for all non-destructive critical defects. Examination for all major and minor defects shall be performed in accordance with the classification of defects. Four power (4x) magnification may be used for inspection of such defects as burrs and foreign matter. When compliance with the applicable requirements is in doubt as a result of visual examination, the characteristic shall be measured or gaged to determine acceptability. All non-conforming material shall be rejected.
4.5.3 Inspection testing. The following tests shall be performed in accordance with the provisions of 4.6.
4.5.3.1 Electrical.
4.5.3.1.1 Dielectric withstanding voltage. Each body assembly prior to assembly of bridgewire shall be subjected to the test. Failure of any unit to comply with the requirements of 3.4.1 shall be cause for rejection of the unit.
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