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|  MIL-P-19131(SHIPS)
4.3.6 An exception to 4.3.5 will be permitted in the case of pumps driven
by single speed alternating current motors in which case the pump may be run
at constant speed and a curve of capacity versus pump discharge pressure sub-
mitted in lieu of the curves required under item (a). The curves of efficiencies
and power shall be plotted versus discharge pressure in lieu of versus capacity
as required under items (b), (c), (d) and (e).
4.3.7 In order to simplify the foregoing test procedure, the Bureau of Ships
when requested, may authorize separate tests of the driving unit (including reduc-
tion gear, if any), and pump at the works of different manufacturers and will
accept overall power or steam-consumption results and characteristics curves
computed from the results thereof. However, this shall not be construed in any
way to release the primary contractor from an operating run on one completely
assembled unit from each contract or contracts for identical units. This operat-
ing test shall be run with the unit fully loaded, and shall demonstrate compliance
with all requirements of this specification as to operation of constant pressure
and turbine governors, thrust, balance, lubrication, at maximum rated speed.
4.3.8 The capacity of the pump (selected as specified in 4.3.2) may be
determined by any convenient method that will insure obtaining results with prob-
able errors not greater than 2 percent. All gages shall be calibrated before and
after the tests or oftener, if necessary. The specified viscosities shall be
maintained within 5 percent regardless of temperatures.
4.3.9 Reports. -
4.3.9.1 Complete performance acceptance test reports, including copies of
recorded test data and characteristic curves plotted therefrom and covering the
following shall be furnished as specified in 4.3.9.2:
(a) Test report of driving unit.
(b) Test report of controller (if involved).
(c) Test report of pump.
(d) Test report on the combined assembled unit, including
a definite report on the suitability of the driving unit
(and controller or pressure regulating governor, if
furnished) for its specific applicat ion and harmony of
assembly of all independent units going to make up
the complete equipment.
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