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| MIL-P-19131(SHIPS)
4.3.4.6 If any selected pump is found not to conform to this specification,
the lot which it represents shall be rejected. A rejected lot may be resubmitted
for selective tests provided the manufacturer, after having been informed of the
reason for rejection, has inspected or tested each pump in the lot for deficiencies
noted and has removed all nonconforming units.
4.3.5 Sufficient data shall be taken during the tests of 4.3.1, 4.3.2 and
4.3.3 to prepare pump characteristic curves as specified curves as specified
below. The curves shall be corrected in all cases to the steam or the electric
power operating conditions specified in the contract or order. Complete operating
characteristics of the pump and its driver, as specified in the contract or order,
as well as the operating characteristics of the unit during the particular test run,
shall be shown on each curve sheet. The capacity shall be expressed in gallons
per minute, the discharge pressure in pounds per square inch gage, the suction
lift in inches of mercury, the viscosity in Saybolt seconds universal (unless
otherwise specified in the contract or order) and the speed in revolutions per
--
minute. Curves shall be furnished as follows:
(a) At least two curves of capacity versus pump speed at constant
specified discharge pressure and at constant specified max-
imum suction lift when handling specified liquids as follows:
(1) One curve at maximum specified viscosity.
(2) One curve at minimum specified viscosity.
(3) One curve at each intermediate viscosity
that may be specified in the contract or
order.
(b) A curve of capacity-versus pump mechanical efficiency for
each of the curves obtained under item (a),
(c) A curve of capacity versus volumetric efficiency for each
of the curves obtained under item (a).
(d) A curve of capacity versus horsepower input to the pump
for each of the curves obtained under item (a).
(e) A curve of capacity versus power input to the driving
unit, expressed in pounds of steam per hour or elec-
trical horsepower as applicable, for each of the curves
obtained under item (a).
(f) One curve of capacity versus suction lift at specified max-
imum discharge pressure and at rated speed for each of the
viscosity values specified in item (a).
(g) In the event that two or more rated capacities are specified,
a set of curves, which are required by subparagraphs (a)
to (f) inclusive, shall be furnished for each specified
rated capacity.
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