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|  MIL-T-22913C(OS)
Acceptance of the preproduction sample shall be based on no defects in
the sample. Further production of the timer by the supplier, prior to
the approval of the preproduction sample, shall be at the supplier's
risk.
4.3.2 Lot size. Unless otherwise specified in the contract or order,
each shipment of units of product shall be a separate "inspection lot"
and may differ from the quantity specified in the total order or con-
tract. In any event, all units of a single "inspection lot" shall be
made to the same design, with the same materials and manufacturing
techniques, and shall be part of one continuous production run.
4.3.3 Periodic production samples. From each succeeding lot or grand
lot of 300 or less that have passed the quality conformance inspection of
4.5, a random sample of five timers will be selected for submission to
an activity designated by the procuring activity to determine compliance
of the samples with the requirements of the contract, specification, and
drawings. The timers shall be considered satisfactory if they meet all
specification and pertinent drawings requirements and withstand the tests
specified in 4.4 and 4.5. Failur of the periodic production sample to
comply with these requirements will result in the rejection of the lot,
as determined by the procuring activity. Periodic production samples
accepted will be applied as part of the quantity specified by the con-
tract or order, but shall not be used in any equipment manufactured for
the Government.
4.4 Preproduction and periodic production inspection. The preproduction
and periodic production samples, after satisfactorily passing the quality
conformance inspections detailed In 4.5, shall be subjected to the fol-
lowing tests and examinations. Certified inspection data covering the
results of preproduction and periodic production inspections shall be for-
warded to the procuring activity.
4.4.1 Vibration
4.4.1.1 Mounting. The timer, less pack or packaging, shall be mounted
by means of its mounting holes as shown on NAVORD Dwg 2209071 and tested
as specified in 4.4.1.2 and 4.4.1.3.
4.4.1.2 Vibration, nonoperating. The timer shall be subjected to the
"Vibration, nonoperating" test of MIL-E-82590 and thereafter shall meet
the requirements of 3.4.1.1.
4.4.1.3 Vibration, operating . The timer shall be subjected to the
"Vibration, operating" test of MIL-E-82590 and during and thereafter
shall meet the requirements of 3.4.1.2.
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