MIL-DTL-8790F
TABLE IV. Individual, sampling, and periodic inspection.
Conformance inspection
Test
Test method
Requirement
Individual
paragraph
paragraph
Sampling
Periodic
1/
Examination of product
X
Proof pressure
X
Leakage 2/
X
Burst pressure 2/
X
Impulse 2/ 3/
X
1/ 100% inspection required on all hose and hose assemblies supplied to this specification.
2/ These are destructive tests.
3/ Aging not required for periodic inspection.
4.6.2.3 Nonconformance of sampling tests. If one or more defects are found in the inspection
sample, both the qualifying and inspection activities shall be immediately notified and the production lot
shall be rejected and not be supplied to this specification. Acceptance and shipment of the product shall
be discontinued until corrective action, acceptable to the qualifying activity, has been taken. The
corrective measures shall be performed on the materials or processes, or both, as warranted, and on all
products considered subjected to the same failure. Once the corrective action has been completed,
either the specific sampling test in which the original sample failed or all sampling tests may be required
to be repeated on additional samples, at the option of the qualifying activity. However, final acceptance
shall be withheld until testing has shown that the corrective action was successful. In the event of a
failure after re-inspection, information concerning the failure and the corrective action taken shall be
furnished to both the qualifying and inspection activities.
4.6.3 Periodic tests.
4.6.3.1 Periodic test plan. Hose assemblies shall be subjected to periodic testing in accordance with
table IV.
4.6.3.2 Periodic test inspection samples. For each size manufactured under essentially the same
conditions, periodic control testing shall be performed on either four samples from every 10,000 hose
assemblies produced or one sample from every 2,500 hose assemblies. If there has been some
production but the number hose assemblies produced has not reached 2,500 for a specific size within
three years, the manufacturer shall perform periodic control tests on one hose assembly of that size
unless documented approval to not perform the tests has been obtained from the qualifying activity.
4.6.3.3 Nonconformance of periodic control tests. If a sample fails a periodic control test, both the
qualifying and inspection activities shall be immediately notified of such failure. Acceptance and
shipment of the product shall be discontinued until corrective action, acceptable to the qualifying activity,
has been taken. The corrective measures shall be performed on the materials or processes, or both as
warranted, and on all products considered subjected to the same failure. Once the corrective action has
been completed, the periodic control test in which the original sample failed or all individual, sampling or
periodic control tests may be required to be repeated on additional samples, at the option of the qualifying
activity. However, final acceptance shall be withheld until testing has shown that the corrective action
was successful. In the event of a failure after re-inspection, information concerning the failure and the
corrective action taken shall be furnished to both the qualifying and inspection activities.
4.6.4 Disposition of test specimens. Samples that have been subjected to any sampling or periodic
control tests are considered damaged and shall not be delivered as part of a contract or purchase order.
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