2.15.3
Fuel Meters
**************************************************************************
NOTE: Use words enclosed in brackets only for truck
loading stations.
**************************************************************************
FS A-A-59248, except as modified herein. Meters shall have a minimum
working pressure of 1896 kPa (gage) at 38 degrees C 275 psig at 100 degrees
F. Metals in contact with fuel shall be stainless steel Types 304 or 316,
or aluminum alloys 3003, 6061-T6, or 356-T6, except as modified in
paragraph entitled "Special Requirements," in this section. Meters shall
be of the continuous duty, positive displacement type, with electronic
thermal compensation capability, flanged end connections, designed for
outdoor installation. Meter adjustment shall be possible while under
pressure, without leakage or loss of product and without requiring
disassembly other than removal of the cover plate. Meters shall be capable
of momentary overspeeding to 125 percent of maximum rated capacity without
damage or impairment of accuracy. Provide [with a two-stage set stop
counter register,] with seven-figure nonsetback totalizer and five-figure
setback run indicator without the 0.40 liter tenth-of-gallonindicator.
Provide counter with electrical impulse to solenoid valves that are on the
two-stage fueling flow control valves. Pressure drop across each meter
shall not exceed 41 kPa (gage) 6 psig when operated at rated capacity.
Each meter shall be factory calibrated. Provide meters with card printer.
2.15.4
Fuel Pumps
**************************************************************************
NOTE: Drawings should show details, capacity,
efficiency, and electrical characteristics for each
pump. Refer to pump Military Specification and
specify ordering data in complete detail for each
pump.
**************************************************************************
Design shall provide for nonoverloading characteristics throughout the
entire head capacity curve under operating conditions. Metal contacting
the fuel shall be stainless steel or aluminum alloy, except impellers shall
be stainless steel.
2.15.4.1
Turbine Pumps
Provide antivortex device which allows pump removal without entering the
tank.
2.15.4.2
Centrifugal Pumps
MIL-P-52327, except as modified herein.
2.15.5
Pantograph Fueling Stations
**************************************************************************
NOTE: Drawings should show complete details of
pantograph fueling station, including fuel meter,
and fueling control valve which should provide:
intrinsically safe hand held deadman control,
constant downstream pressure, surge control when
flow is stopped suddenly, and expansion relief for
SECTION 15194N
Page 25
Previous Page
