MIL-PRF-52666F
TABLE III. Examination schedule.
EXAM
EXAMINATION DESCRIPTION
METHOD
NO.
101
Materials not as specified (see 3.2).
Visual, Doc
102
Material not resistant to corrosion and deterioration or treated to be
Visual, Doc
made resistant to corrosion and deterioration (see 3.2.1).
103
Dissimilar metals (see 3.2.2).
Visual, Doc
104
The F/S does not interface with the filter-coalescer element(s) or
Visual
separator stages specified (see 3.5.1 and 3.5.2).
105
F/S inlet and outlet fittings are not as specified (see 3.5.3).
Visual
106
The F/S does not present low silhouettes or low centers of gravity as
Visual, SIE
specified, dimensions and/or weight limits exceeded (see 3.5.4).
107
Differential pressure dial gauge not as specified (see 3.3.7).
Visual
108
Adapter and sampling probe unsatisfactory or not as specified
Visual, SIE
(see 3.3.8).
109
Water drain valve not as specified (see 3.3.9.1).
Visual
110
Water level sight gauge not as specified (see 3.3.9.2).
Visual
111
Air relief valve not as specified (see 3.3.9.3).
Visual, SIE
112
F/S not painted with chemical agent resistant coating (see 3.6).
Visual, Doc
113
Color of F/S not as specified (see 3.6).
Visual
114
Labeling incorrect, illegible, or missing (see 3.7).
Visual
115
Filter-coalescers and separator stages are missing or not as specified
Visual
(see 3.8).
116
Components and parts of any one F/S not interchangeable with like
Visual
components or parts from any other F/S of the same type and class
(see 3.9).
SIE = Standard Inspection Equipment
Doc = Documentation
4.5.2 Tests.
4.5.2.1 Water removal. This testing shall follow the differential pressure tests (see 4.5.2.3).
At 15 minute intervals, the fuel flow shall be stopped by closing a quick-closing valve located
downstream from the effluent sampling connection. The fuel flow shall be immediately
reestablished and the test continued after each stop. The water shall be injected at a rate of 5 %
by volume at 115 % of rated flow for 60 minutes. Nonconformance to 3.3.2 and 3.3.3 shall
constitute failure of this test.
4.5.2.2 Hydrostatic pressure. Each F/S shall be subjected to a hydrostatic pressure test as
specified in 3.3.5. The air relief valve shall be closed during this test. Evidence of leakage,
permanent deformation, or other defects that harmfully affect the performance and serviceability
of the F/S, shall constitute failure of this test.
4.5.2.3 Differential pressure. Differential pressure across the test F/S shall be measured prior
to the start of the water removal test specified in 4.5.2.1. Nonconformance to 3.3.6 shall
constitute failure of this test.
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