MIL-DTL-52649C
TABLE III. Individual inspections.
Requirement
Inspection
Number of
Inspections
samples
paragraph
paragraph
Examination of
3.8 and 3.9
4.7.1
All
product
3.6.4
4.7.5
Valve actuation
1
3.6.5
Leakage
4.7.6
1
4.6.2. Nonconformance individual inspections. If one or more defects are found in the inspection
lot, then the production lot shall be screened for that particular defect and defects removed. An
inspection lot shall be selected from the production lot and all individual tests (see table III) shall be
performed. If one or more defects are found in the second inspection lot, the production lot shall be
rejected and shall not be supplied to this specification. Test data of part performance shall be made
available to the contracting agency upon request.
.
4.7 Inspection methods.
4.7.1 Examination of products. The primer equipment shall be examined for identification markings
and workmanship as specified in 3.8 and 3.9.
4.7.2 Diethyl ether stability. Gaskets, O-rings moldings, and all non-metallic
materials utilized in any sample primer equipment shall meet the requirements of 3.6.1. The testing shall
be as follows:
a. Place nonmetallic parts of a sample in a 400 milliliter glass beaker and immerse with diethyl
ether conforming to MIL-E-199. Cover with a watchglass and place in a vent space
maintained at 73°F ± 2.5 °F (-28°C ± 1.5°C) for 14 days.
b. Remove parts from ether and allow to air-dry for 1 hour.
c. Reassemble the primer equipment sample and proceed with the endurance test.
d. Any swelling, hardening, or softening rendering the nonmetallic part as unfit for endurance test
(see 4.7.3), shall constitute a failure of this test.
4.7.3 Endurance. Cold soak the primer equipment at a temperature of not higher than -65°F (-54°C)
for a minimum of 4 hours. Using primer fuel conforming to O-F-1044, subject the cold soaked primer
equipment to 1,000 cycles of simulated use at an ambient temperature not higher than -65 °F (-54°C).
Nonconformance to 3.6.2, binding of components, breakage, or inability to complete the test shall
constitute failure of this test.
4.7.4 Thermal stability and discharge volume. Establish the discharge volume for the type
and size of primer equipment to be tested as follows:
a. Weigh cylinder and complete primer device.
b. Discharge 10 shots (pausing 6 seconds after pulling lever to allow chamber to fill and 6
seconds to allow it to empty).
c. Reweigh cylinder and primer device. The difference in weight is the total discharge of primer
(or primer and propellant) as appropriate.
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