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|  MIL-P-17639F(SH)
4.6.7,2.6 Post shock test procedure. The shock tested unit, if it is to
be supplied under a contract or order, shall be restored to the as-new condition
by replacement of all parts damaged or distorted beyond the as-new design
tolerances. Rolling contact bearings shall be replaced regardless of condition.
The shock tested rolling contact bearings shall be destroyed. The restored unit
shall successfully pass the tests specified in 4.6.1, 4.6.3(a), and 4.6.4, if
applicable,
Quality conformance test documentation shall certify that the unit
was subjected to the shock test and subsequently restored, tested, and inspected
in accordance with this specification. A completed parts examination check list
shall be supplied (see 6 .2.2) and shall identify the parts which were replaced
(such as the bearings) and shall certify that the unit fully conforms to the
specifications for unrestricted service.
4.6.7 .2.7 Unless otherwise specified (see 6.2. 1), pump units shall be shock
tested with drivers. Flexible coupled pumps shock tested with one driver will
not be required to be shock tested again when supplied with a different driver of
equal or less weight. Prime movers are subject to shock tests in accordance with
applicable equipment specifications.
4.6.7.3 Inclined operation test. Vertical pumps shall be operated for
not less than 30 minutes inclined at-an angle from the normal equal to the
combination of the maximum permanent list and trim as specified (see 6.2.1).
Horizontal pumps shall be tested in accordance with the inclined operation
test specified for the driving unit. Operation in the inclined position shall
be as close to rated speed and capacity as practicable. The performance point
shall be indicated in the test report. The pump shall meet specified performance
requirements (see 3 .2) without damage while operating in the inclined position.
4.6.7.4 Vibration test. When specified (see 6.2.1), one pump of a
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quantity of identical pumps-being supplied shall successfully undergo a vibra-
tion test in accordance with the requirements of MIL-STD-167-1, type I, and as
supplemented in the contract or order. The vibration test need not be repeated
on subsequent contracts or orders for pumps of identical design to those previ-
ously tested, provided the previous tests included the frequencies specified
(see 6.2.1).
4.6.7 .4.1 The unit shall be mounted on typical shipboard foundations during
the vibration test or the shipboard mounting arrangement shall be simulated in
spring mass characteristics except where this mounting arrangement causes the
largest test table capacity to be exceeded. Inability to vibration test the unit
because of excessive weight or size shall not release the contractor from furnish-
ing equipment which can withstand the specified vibration inputs. Vibration test
acceptance criteria shall be in accordance with MIL-STD-167-1, type I.
4.6.7.5 Experimental stress analysis. For submarine sea-connected pumps
subject to full submergence pressure, the structural adequacy of one pump casing
of each design shall be verified by an experimental stress analysis.
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