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|  MIL-F-8615D
4.5.3 Break-in run. Where applicable, a break-in run (either dry or wet)
shall be conducted in accordance with the item specification.
4.5.4 Leakage. All leak tests shall be performed at a variety of pressure
levels from the minimum up to the maximum pressure. Wherever slight leaks
are critical, the pressure at each level shall be held for a sufficient
length of time (5 to 30 minutes or more) to provide an accurate assessment.
Leak detection by pressure gage drop is not permitted for first article or
sampling inspections. Leak checks for individual tests may be conducted
at fewer pressure levels and for a shorter duration of time.
4.5.4.1 Internal. Internal leakage tests are normally conducted from
minimum up to proof pressure or maximum operating pressure, and back down
again to minimum. The pressure levels and allowable leakage rate shall
be specified.
4.5.4.2 External. There shall be no visible external leakage except as
permitted by the item specification from minimum pressure up to ultimate
pressure.
4.5.4.3 Plug-in units. The quantity of fuel loss resulting from engagement
and disengagement of plug-in units shall satisfy specification requirements.
4.5.5 Calibration. Calibration tests shall be conducted to demonstrate
compliance with 3.7.1. For first article and sampling inspections, sufficient
data points shall be taken to thoroughly demonstrate the complete performance
characteristics of the component. For individual tests, the number of data
points may be limited to only one or two critical points, as specified.
4.5.6 Altitude. Altitude tests shall be conducted to demonstrate as speci-
fied in 3.7.2. These tests may be conducted concurrently with the endurance
requirements as specified in 3.7.5.
4.5.7 Speed.
Tests shall be conducted to demonstrate as specified in
3.7.7.
4.5.8 Acceleration. Tests shall be conducted in accordance with MIL-STD-81O,
Method 513.2 to demonstrate as specified in 3.7.3.
Tests shall be conducted to demonstrate as specified in
4.5.9 Gravity.
3*7.4.
4.5.10 Pressure surge.
Tests shall be conducted to demonstrate as specified
in 3.7.9 as applicable.
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