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|  MIL-S-70536 (AR)
4.5 Methods of inspection.
4.5.1 Dimensional control of molded or plastic parts. In place
of normal sampling and inspections associated with the
Classification of Defects, and after a curing time for the parts has
been approved (see Note 1) a sample of three (3) parts (as molded)
from each cavity shall be fully inspected dimensionally to qualify a
new or reworked cavity for use in production. Each molded part
shall carry the individual cavity identification. As a control of
each cavity during production, the above quantity of parts from each
cavity shall be inspected for at least the defects listed in
paragraphs 4.4.2.1, after continuous production of each 5,000 parts
or at the end of each week, whichever occurs first. Of the three
(3) samples, one (1) sample shall be the last part produced. If any
defective parts are found during qualification of the cavity, the
cavity producing the defective part will not be used in production.
If any defective parts are found when inspection is performed for
the control of the cavity, the cavity producing the defective part
shall be removed from production. Further, that portion of
production since the last control check shall be returned to the
contractor for inspection for each separate type of defect according
to MIL-STD-105, using an AQL of 0.40 percent for each major defect
and an AQL of 0.65 percent for each minor defect. All cavities
removed from production because of some fault, may, after reworking
be returned to production providing they pass the qualification test
above. The contractor may request a change of inspection frequency
providing he presents objective evidence to the Contracting Officer
to substantiate the request. Contractor design of gages and test
equipment required to perform the inspections listed herein shall be
submitted per 6.3 for approval prior to manufacture of equipments
The noted subparagraphs identify those items and minimum inspections
subject to the requirements of this paragraph.
NOTE 1: In establishing a curing time, dimensionally check ten (10)
parts from each cavity at periodic intervals (e.g. every 30, 60,
etc. reins.) until dimensional stability is attained. The curing
time will be from the time the part comes out of the mold until
dimensional stability is attained. The inspection data used in
determing the curing time shall be sent to ARDC, Dover, New Jersey
07801-5001, ATTN: AMSMC-QAT-M(D) . If there is a change in material
or cycle time, or if a cavity is reworked, or a new cavity is used,
a new curing time shall be established and approved.
4.5.2 Moisture content.
4.5.2.1 Composition, ignition. The method of determining the
percentage of moisture in the igniter composition shall be in
accordance with Method 101.2 of MIL-STD-1234 except that the sample
shall be heated until a constant weight is obtained in lieu of four
hours. Observation shall be made for compliance with the applicable
requirement.
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