MIL-P-52144E(ME)
3.8.2 Storage temperature. The pumping assembly shall not be damaged by
storage in any ambient temperature from +155° F to -65° F.
3.9 Safety. All shafts or rotating parts of the pumping unit shall be guarded
when such parts are exposed to contact by personnel or otherwise create a hazard.
All hot surfaces of the equipment, including exhaust pipes exposed to contact by
personnel or which create a fire hazard, shall be fully guarded or insulated.
Fuel tanks shall be located in a manner which will not allow spills or overflows
to run onto the engine, exhaust, or electrical equipment. Adequate shielding may
be used to attain the same purpose. Exhausts or discharges from the equipment
shall be directed so that they do not endanger personnel or obstruct the view of
the operator. Electrical equipment shall be effectively guarded and grounded to
protect all persons and objects from electrical shock hazard.
3.10 Human factors engineering. The pumping assembly shall conform to accepted
human factors engineering design criteria as described in MIL-STD-1472. Special
design emphasis shall be given, but not limited to, 4 (general requirements), 5.1
(control/display integration), 5.2 (visual displays), 5.4 (controls), 5.5
(labeling), 5.6 (anthropometry), 5.9 (design for maintainability), 5.13 (hazards
and safety), of MIL-STD-1472, as applicable. An operation information plate
conforming to drawing 13226E0111 shall be permanently placed near the control
panel so that it can be seen while operating the pump.
3.10.1 Noise limits. The noise produced by the pumping assembly shall conform
with MIL-STD-1474 5.1 requirements when tested in accordance with 4.5.2.6.1. The
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provisions of MIL-STD-1474, 4.3 and 4.4 shall be provided if and only if MIL-STD-
1474, 5.1.1.2 procedures have been pursued and documented to the satisfaction of
the procuring activity and written permission to exceed the 85 dB(A) limit is
obtained from the procuring activity. Hazard signs shall conform with MIL-STD-
1474, 4.3 and be readable at the distance indicated on the sign. Plates shall be
in accordance with MIL-P-514, type III, composition C of type I, grade A, class 1
material.
3.11 Reliability. The specified mean-time-between-failure (MTBF) shall be 200
hours when the pumping assembly is operated at rated capacity and tested as
specified in 4.6.2.7.
3.12 Maintainability.
3.12.1 Maintenance support. Assemblages or support elements such as technical
manuals, repair pares, special tools, or lubrication charts, as specified (see 6.5
and 6.6), shall be adequate to perform the intended function of assisting or
conducting maintenance operations when tested as specified in 4.5.2.8.
3.12.2 Maintenance ratio. The pumping assembly shall have a maintenance ratio
of not more than 0.07. Maintenance ratio is defined as a ratio of the total
active maintenance man-hours required (scheduled and unscheduled) to the total
operating time. Man-hours for repair of replaced components and scheduled
before-and-after operation checks are excluded. A maintenance schedule shall be
furnished prior to the start of any testing.
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