MIL-PRF-13789E
3.5.2.2 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with each
other unless protected against galvanic corrosion (see 6.4.4).
3.5.2.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the maximum extent possible provided that
the material meets or exceeds the operational and maintenance requirements, and promotes
economically advantageous life cycle costs (see 6.4.5).
3.5.3 Cleaning, treatment, and painting. All surfaces of the strainers, normally painted
internally and externally shall be cleaned, treated, and painted in accordance with the
manufacturer's standard commercial practice. The top coat color shall be as specified in the
contract or order (6.2).
4. VERIFICATION
4.1 Classification of inspections. Inspections shall be classified as follows:
a. First article inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 First article inspection. The first article inspection shall be performed on a minimum of one
strainer (see 3.2 and 6.2). This inspection shall include the examinations of table III and first
article tests in table IV. Nonconformance to any specified requirement, the failure of any test, or
the presence of one or more defects shall be cause for rejection.
4.3 Conformance inspection. The conformance inspection of table III shall be performed on all
strainer production units. Nonconformance to any specified requirement, the failure of any test,
or the presence of one or more defects shall be cause for rejection.
4.4 Examination. The examination shall be in accordance with table III.
TABLE III. Examination schedule.
Exam
Examination description
Requirement
Method of
paragraph
examination
E-1
Components missing or not specified.
3.1
Visual / Doc.
E-2
Strainer body not as specified.
3.3.1
Visual / Doc.
E-3
Strainer basket not as specified.
3.3.2
Visual
E-4
Inlet and outlet connections not as specified.
3.3.3
Visual
E-5
Dimensions not as specified.
3.3.4
SIE
Table III. Examination schedule - Continued
E-6
Identification and markings not as specified.
3.5.1
Visual
E-7
Materials not as specified.
3.5.2
Visual / Doc.
E-8
Color not as specified.
3.5.3
Visual
Doc. = Document, SIE = Standard Inspection Equipment
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