MIL-DTL-5886H
4.3 First article inspection. First article inspection shall consist of all the examinations
and tests of this specification. Each sample shall be subjected to all the inspections and tests of
this specification with the exception of the fragmentation test, the burst test, and the physical
properties test as further explained (see 4.3.1).
4.3.1 First article samples. Unless otherwise specified, as soon as practicable after award
of a contract or order, the manufacturer shall submit five sample cylinders of each MS part
number specified in the contract or order to the first article tests specified, and two material
samples cut from the walls in unaffected areas of two separate cylinders at the completion of the
burst test specified (see 4.5.5) with additional samples to be made available if necessary. Three
sample cylinders shall be used for the fragmentation test and the remaining two cylinders shall
be used for the burst test. The samples shall be representative of the construction, workmanship,
components, and materials to be used during production. When a contractor is in continuous
production of these cylinders from contract to contract, submission of further first article samples
on the new contract may be waived at the discretion of the procuring activity. Approval of the
first article samples or the waiving of the first article inspection does not preclude the
requirements of submitting to the quality conformance inspection. The first article samples shall
be tested at a facility approved by the procuring activity (see 6.2). The first article samples shall
be plainly identified by securely attached durable tags marked with the following information:
"Sample submitted by (name) (date) for first article inspection in accordance with MIL-
DTL-5886 under contract no _______________."
The samples which are used for the first article inspection shall not be considered as
part of the quantity to be delivered under contract. The tested samples shall be forwarded as
directed by the procuring activity.
4.4 Conformance inspection. The conformance inspection shall consist of the
following examinations and tests:
a. Visual examination (4.5.1)
b. Dimensions (4.5.1.1)
c. Cleanliness (4.5.2)
d. Leakage (4.5.3)
e. Permanent volumetric expansion (4.5.4)
f. Burst pressure (4.5.5)
g. Macrostructure (deep acid etch) (4.5.6)
h. Welding (radiographic inspection) (4.5.7)
i. Physical properties (4.5.10)
Any defects detected by these tests may be corrected by rework. However, the
macrostructure (see 4.5.6), radiographic inspection (see 4.5.7), and the physical properties (see
4.5.9) tests may reveal defects which are impracticable to rework. If the quantity of cylinders
warrants the expense involved, the manufacturer may choose to accomplish the cyclic endurance
test (see 4.5.5.1) to the particular cylinder or cylinders which fail (see 4.5.6, 4.5.7 or 4.5.9). Then
the results of the failed test along with the results of the cyclic endurance test with appropriate
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