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| MIL-C-70491(AR)
4.5.1 Government furnished inspection equipment. Where the
contract provides for Government furnished test equirpment, supply
and maintenance of test equipment shall be in accordance with the
applicable requirements specified in MIL-I-45607.
4.5.2 Contractor furnished inspection equipment.
All inspection equipment specified
4.5.2.1 Government design.
by drawing number in specification or QAP frming a part of the
contract shall be supplied by the contractor in accordance with
technical data included in the Technical Data Package List (TDPL).
4.5.2.2 Contractor design.
In the absence of Government
inspection equirement design, the contractor shall design and supply
inspection equipment compatible with the "Test Methods and
Procedures" specified in 4.6 of this specification and with the
component inspection procedures specified in "Examination" and
"Test FAcilities" requirements of MIL-F-13926. Since tolerance of
test equipment is normally considered to be within 10% of the
product tolerance for which it is intended, this inherent error in
the test equipment design must be considered as part of the
prescribed product tolerance limit. Thus, concept, construction,
materials, dimensions, and tolerance used in the design of test
equipment shall be so selected and controlled as to insure that the
test equipment will reliably indicate acceptability of a product
which does not exceed 90% of the prescribed tolerance limit, and
permit positive rejection when non-conforming. Construction shall
be such as to facilitate routine calibration of test equipment.
4.5.2.3 Inspection equipment design requirements.
The volume of the test chamber
4.5.2.3.1 Temperature testing.
shall conform to the test tactilities requirements of MIL-F-13926.
The air temperature at the control sensor shall be in accordance
with the specified requirements within plus or minus 2.5F
(1.4C). The temperature gradient across the cross-sectional
o
area occupied by the test item shall not exceed 0.5 F per foot in
any direction. The heat source of the test chamber shall be so
located that radient heat, if used, will not fall directly on the
test item. Thermocouples-or equivalent temperature sensors
utilized to determine or control the specified chamber temperature
shall be centrally located within the test chamber within the
supply airstream, or in the return airstream, whichever provides
the specified test condition at the item under test and shall be
baffled or otherwise protected against radiation effects.
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