TM 10-4320-317-13
(35) Push cam arms forward to open. Remove reducer (10) from elbow (11) on tank.
2-16. Operating Instructions on Decals and Instruction Plates. Refer to applicable technical manuals for TWDS
components.
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
2-17. General. This section provides instructions for operating TWDS in unusual conditions. Refer to applicable
technical manuals for instructions for TWDS components.
Cold Climates. If freezing conditions exist, below 32 (0 ), water in lines will freeze. If TWDS system is
a.
F
C
shut down for extended periods, isolate storage tanks and drain hoselines of the 10-mile segment.
b.
Extreme Heat. Protect storage tank either by placing it in shade or by covering it with leafy branches,
camouflage net, shade cloths, tarpaulins, or a tent. Covering should be supported so that air may circulate
around tank. Storage tank and pressure-reducing valve may also be cooled by covering with burlap or other
fabric and soaking with water.
c.
Salt Water Area.
Notify unit maintenance if rust or aluminum oxide formations are present on TWDS
components.
d.
High Winds. Pack hoseline as soon as possible (refer to para. 2-9).
2-18. Nuclear, Biological, and Chemical (NBC) Decontamination. Refer to FM3-3, FM3-4, FM3-4-1, FM3-5,
FM3-6, and FM3-8 for decontamination procedures.
2-19. Emergency Procedures.
a.
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 problem is corrected.
b.
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.
(1)
Shut off engine. Refer to applicable technical manual.
(2)
Shut off waterflow through malfunctioning pump. Close butterfly valves in suction and discharge lines.
(3)
Open butterfly valve in bypass line.
(4)
Notify operators at other pumping stations of equipment failure.
(5)
Operation of lead pump should be decreased (refer to applicable technical manual). Discharge rate from lead
pump should only be enough to keep downline pumps primed.
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