MIL-HDBK-1022
storage tanks. Provide dispensing filter/separators of the
same number and capacity as the transfer pumps; that is, for
three 600 gpm (38 L/s) pumps, provide three 600 gpm (38 L/s)
filter/separators.
4.7.7
Fuel Quality Monitors. The primary purpose of fuel
quality monitors is to detect water that bypasses the
filter/separator and provide an indication that the
filter/separator is not working correctly. Fuel quality
monitors will detect the presence of free water in the fuel
and positively shut off the flow if the level of water is
unacceptable. Fuel quality monitors absorb and retain free
and emulsified water without being affected by surfactants or
additives in the fuel and serve to filter particulate matter.
As the fuel quality monitor senses that the fuel has
unacceptable levels of water, the monitor will absorb the
water. As water absorption continues the absorbent material
swells, causing the pressure drop across the vessel to
gradually increase until the flow is finally stopped. Provide
cartridge-type fuel quality monitors immediately downstream of
all issue filter/separators in JP-5 systems. In JP-8 systems,
use only where directed by Service Headquarters.
4.7.8
Pumps
4.7.8.1
Design Requirements. Design pumps to deliver the
full range of operating conditions anticipated at any facility
with flow rates as presented in this section. Ensure pumps
develop sufficient head to overcome the friction and static
head losses in the system at the rated flow. Consider the
specific gravity, temperature, viscosity, vapor pressure,
corrosive, and solvent properties of the fuel. Provide at
least two pumps for each aviation turbine fueling system. For
any single grade of fuel, connect pumps in parallel. Select
according to the type most suitable for the particular
application. Do not use positive displacement or
reciprocating pumps for product issue or pipeline transfer.
Provide separate pumps for each type of aviation turbine fuel.
Provide at least two transfer pumps, each capable of
delivering the required system capacity.
4.7.8.2
Centrifugal Pumps. Use API Std 610 centrifugal
pumps to pump from aboveground tanks with continuously flooded
suctions.
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