MIL-DTL-13531J
TABLE V. Qualification and verification of qualification inspection.
Requirement Inspection
Qualification Inspection
paragraph paragraph
Visual inspection
Hose assemblies (fittings)
Proof pressure
Length change
Burst pressure 1/
Resistance to impulse pressure
3.6.1
Low temperature flexibility 1/ 2/
Proof pressure
Oil resistance 2/
Ozone resistance 2/
Fungus resistance 3/
Proof pressure (30, 60, 90 days)
1/ These are destructive tests.
2/ These tests need only be done during initial qualification as long as
materials, material supplier, and designs and manufacturing
processes have not changed.
3/ Manufacturers may certify to the qualifying activity that the
materials used are fungus resistant in-lieu-of performing this test.
4.5.3 Acceptance of qualification inspection data. Required qualification tests at the hose assembly
level that were already performed at the bulk hose level may be eliminated if documented approval has
been obtained from the qualifying activity.
4.5.4. Failures. One or more failures shall be cause for refusal to grant qualification.
4.5.5 Test plans and qualification reports.
4.5.5.1 Test plans. Test plans shall be prepared and submitted in accordance with the requirements
of the qualification activity. The method of qualification proposed by the contractor is subject to the
approval of the qualification activity. Manufacturers shall discuss with the qualifying activity the test
specimens and test plans. These plans shall state specifically the component requirement to be verified
during the test, such as test fixtures, setup, conditions, and identification of the successor failure criteria
shall be included as appropriate.
4.5.5.2 Qualification reports. Qualification reports shall be submitted in accordance with requirements
of the qualifying activity. The visual and mechanical inspection and the hose assembly fitting inspection
will be 100% unless another sampling plan is approved in writing by the qualifying activity.
4.6 Conformance inspection. Applicable to both hose and hose assemblies.
4.6.1 Individual inspection. Individual inspection shall consist of the inspections specified in table VI
in the order shown.
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