MIL-DTL-26499E
TABLE III. Individual and sampling inspections.
Requirement
Inspection
Number of
Test
paragraph
paragraph
samples
Visual and mechanical inspection
100% 1/
Configuration
100% 1/
Cleanliness
SAE AS611
Proof pressure
100%
Tensile test
See 4.5.3
Burst test
See 4.5.3
1/ Sampling plan for configuration and for visual and mechanical inspection shall be at 100%
or at an inspection plan approved in writing by the qualifying activity.
4.5.2 Sampling hose assemblies. For hose assemblies, the inspection lot shall be product selected at
random from the production lot without regard to quality and shall be the sample size specified in table
III.
4.5.3 Sampling for tensile and burst test. The manufacturer shall tensile test one hose and burst test
a different hose for each lot of 0 to 100 pieces. For lots over 100 pieces, one additional hose shall be
tested for tensile and one additional hose shall be tested for burst for each full or partial increment of 100
pieces. The tensile and burst tests must be done prior to delivery and tested hoses shall not be shipped
or considered part of the order.
4.5.4 Nonconformance. If a sample fails to pass any individual and sampling (see table III), the
manufacturer shall immediately notify the qualifying activity and cognizant inspection activity of such
failure. The manufacturer shall take corrective action on the materials or processes, or both, as
warranted, on all units of products which can be corrected and which were manufactured under
essentially the same conditions, with essentially the same materials and processes, and which are
considered subject to the same failure. Acceptance and shipment of the product shall be discontinued
until corrective action acceptable to the qualifying activity has been taken. After the corrective action
has been taken, individual and sampling shall be repeated on additional samples (all inspections, or the
inspection which the original sample failed, at the option of the qualifying activity). Individual and
sampling inspections shall be reinstituted. However, final acceptance of the hose or hose assemblies
shall be withheld until the individual and sampling inspection has shown that the corrective action was
successful.
4.5.5 Disposition of test specimens. Test specimens that have been subjected to tensile and burst
pressure testing shall not be delivered on the contract or purchase order.
4.6 Changes to QPL product. QPL manufacturers shall notify the qualifying activity in writing, if any
changes are made in regards to materials, equipment or processes involved in the production of a QPL
item. Subsequently, the qualifying activity shall notify the manufacturer, in writing, if a full requalification,
partial requalification or no additional testing is required as a result of the change to materials, equipment
or processes.
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