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|  MIL-P-18472G(SH)
submitted to the Government for acceptance comply with all requirements of the
contract. Sampling inspection, as part of the manufacturing operations, is an
acceptable practice to ascertain conformance to requirements; however, this does
not authorize submission of known defective material, either indicated or actual,
nor does it commit the Government to accept defective material.
4.2 Classifi cation of in spections.
The inspection requirements specified
herein are classified as follows:
(a) First article inspection (see 4.3).
(b) Quality conformance inspection (see 4.4).
Inspection shall be performed at a labora-
4.3 First article inspection.
tory satisfactory to NAVSEA on each class for which first article approval is
Either horizontal or vertical units may be submitted. Several first
desired.
article tests on one pump design may be conducted concurrently if practicable.
The inspection shall fully establish that the product has the reliability and
performance capability specified herein. First article inspection shall include
all sizes of each class and both horizontal and vertical units. The following
tests shall be performed:
(a) Performance evaluation tests specified in 4.6.2 through 4.6.2.3
and the examination specified in 4.5.
(b) Design evaluation tests as specified in 4.6.3 through 4.6.3.4.
4.4 Quality conform ance inspection. Each pump (and subcomponents of each
pump, if applicable) shall be examined as specified in 4,5 and tested as
specified in 4.6.1 through 4.6.3.4 (see 6.3).
4.5 Examination. Pumps shall be examined in accordance with a completed
part examination check list accompanying each part or assembly. The examination
shall be performed by inspection personnel not engaged in the fabrication and
assembly of the part. The check list for each part shall include accurate part
identification and shall list the specific attributes which determine the part's
acceptability.
The check list shall be filled in during the time of examination.
The check list shall be arranged in tabular form, calling forth separately the
following examination assignments, each accompanied by the specific attributes of
acceptability which shall be checked or measured, and the findings recorded:
(a)
Dimensions. They shall be as indicated on the approved design
drawing. Rotating parts shall be examined for balance and
maximum permissible run-out as indicated on the drawings.
(b)
Materials.
Visual examination for conformance to approved design
drawings. Any appearance of nonconformance shall be further
verified by appropriate tests.
(c)
Cleanliness. Examination for cleanliness shall apply equally to
parts examination prior to assembly as well as subassemblies and
the completed product.
(d)
Missing parts. This examination applies primarily to the
completed product prior to shipment.
Assembly. During assembly, positioning tolerances and wear
(e)
ring/impeller running clearances shall be verified.
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