TM 10-4320-303-13
2.9.5 Other TWDS Components. The following paragraphs will provide operating procedures for operating
the remaining TWDS components under unusual environmental/weather conditions.
2.9.5.1 Operation in Extreme Heat. Pressure-Reducing Valve Assembly. Cover unit with moistened burlap,
tarpaulin, or suitable cover to shade it from sun.
2.9.5.2 Operation in Cold Weather. The TWDS is not intended for use at temperatures below 32° F (0°C).
2.9.5.3 Operation in Salt Water Area. Pressure-Reducing Valve Assembly. Notify organizational
maintenance if rust or aluminum oxide formations are present.
2.9.5.4 Operation in Dusty or Sandy Conditions . Hypochlorination Units. Protect unit from sand or dust as
much as possible. Be careful when mixing chlorine solution to prevent introduction of sand or grit in solution
(para 2.5.5.4).
2.9.5.5 Operation in High Winds . 10-Mile Hoseline Segment. Pack hoseline as soon as possible (para
2.5.1).
2.10 NUCLEAR, BIOLOGICAL, AND CHEMICAL (NBC) DECONTAMINATION.
Refer to FM 3-3, FM 3-4, FM 3-4-1, FM 3-5, FM 3-6, and FM 3-8 for decontamination procedures.
2.11 FORDING.
Reference applicable technical manual for fording procedures on the vehicle used to transport TWDS
components. Reference the applicable technical manual for fording procedures for the 600 GPM pumping
assemblies and the model 1955-3 and model A-506131 hypochlorination units. Reference the applicable
technical manual for fording procedures for the 125 GPM pumping assembly.
2.12 EMERGENCY PROCEDURES.
2.12.1 General. Performance of the entire TWDS depends on continuous operation of each major
component. In most cases, when part of the equipment fails, the entire system must be shut down.
Procedures for partial operation are limited. The only emergency procedures possible are listed below. In all
other situations, the entire TWDS must be shut down until the problem is corrected.
2.12.2 Failure of Boost Pumping Station.
CAUTION
Do not attempt to operate other pumping stations when one unit fails.
The bypass hose assembly is used only to keep downline pumps primed. Enough
pressure will not exist to operate downline pumps, even at a partial rate.
a. Refer to the applicable technical manual and shut off engine.
b. Open butterfly valve in bypass line.
c. Close butterfly valves in suction and discharge lines to and from 600 gpm pumping assembly to shut
off water flow through malfunctioning pump.
d. Notify operators at other pumping stations of equipment failure.
e. Refer to the applicable technical manual and decrease lead pump operation so that discharge rate will
be enough to keep downline pumps primed.
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