MIL-R-10509J
4.2 Test equipment and inspection facilities. The manufacturer shall establish and maintain a calibration system in accordance with NCSL Z540-1, ISO 10012-1, or equivalent system as approved by the qualifying activity.
4.3 Inspection conditions and precautions.
4.3.1 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in accordance with the test conditions specified in the "GENERAL REQUIREMENTS" of MIL-STD-202.
4.3.2 Precautions. Adequate precautions shall be taken during inspection to prevent condensation of moisture on resistors, except during the moisture resistance and thermal shock tests. Precautions shall also be taken to prevent damage by heat when soldering leads to terminals.
4.4 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable to the Government (see 6.3) on sample units produced with equipment and procedures normally used in production.
4.4.1 Sample. The number of sample units comprising a sample of resistors to be submitted for qualification inspection shall be as specified in the appendix A of this specification. The sample shall be from a production run and shall be produced with equipment and produces normally used in production.
4.4.2 Test routine. Sample units shall be subjected to the qualification inspection specified in table V,
in the order shown. All samples units shall be subjected to the inspection of group I. The 40 sample units shall then be divided as specified in table V for groups II to V inclusive, and subjected to the inspection for their particular group.
4.4.3 Defectives. Defectives in excess of those allowed in table V shall be cause for refusal to grant qualification.
4.5 Retention of qualification. Every 6 months, the manufacturer shall verify the retention of qualification to the qualifying activity. In addition, the manufacturer shall immediately notify the qualifying activity whenever the group B inspection results indicate failure of the qualified product to meet the requirements of this specification. Verification shall be based on meeting the following requirements:
a. The manufacturer has not modified the design of the item.
b. The specification requirements for the item have not been amended so far as to affect the character of the item.
c. Lot rejection for group A inspection does not exceed the group A sampling. d. The requirements for group B inspection are met.
When group B requirements were not met and the manufacturer has taken corrective action satisfactory to the Government, group B inspection retesting shall be instituted.
4.5.1 Alternate inspection. For the purpose of retention of qualification and conformance inspection, (see 4.4 and 4.6) test results on identical items covered by MIL-PRF-55182 may be used.
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