MIL-PRF-52109H
Corrosion resistance preventive maintenance shall be limited to routine washing, periodic
inspection and repair of accidental damage.
3.5.6.3 Reliability. The specified mean-time-between-failures (MTBF) shall be not less
than 140 hours, except Type II, Size 1, Class 1 (EMD) that shall be not less than 320 hours, at
the 80% confidence level, when the pumping assembly is tested in accordance with 4.5.6.3 and
4.6.
3.6 Environmental requirements.
3.6.1 Operating temperature. Pumping assemblies shall perform as specified herein in
any ambient temperature from -25 °F to 120 F.
3.6.2 Storage temperature. Pumping assemblies shall not be damaged by storage in any
ambient temperature from -30 °F to 160 F with relative humidity not to exceed 50%.
3.6.3 Vibration. The pumping assemblies shall be capable of withstanding vibration
stresses induced by the various modes of transportation without permanent damage, deformation,
or performance degradation.
3.6.4 Shock. The pumping assemblies shall withstand the dynamic shock of being
dropped on an 8 inches (20 cm) thick bed of dry sand, from a height of 60 inches (152.4 cm)
without deformation, fracture, or breakage of the protective frame or damage to the pump or its
components.
3.6.5 Rollover. The pumping assembly shall be capable of being rolled over in any
direction without deformation, fracture, or breakage of the protective frame or damage to the
pump or its components.
4. VERIFICATION
4.1 Classification of inspections. Inspections shall be classified as follows:
a. First article test (FAT) (see 4.1.1).
b. Conformance inspection (see 4.1.2).
4.1.1 First article test. When a first article test is required (see 6.1), it shall be performed
on one complete pumping assembly. The inspection shall include the examination of 4.1.3 and
the verifications of 4.2 through 4.6.
4.1.2 Conformance inspection. Conformance inspection shall include the examination of
4.1.3.
11
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business