TM 10-4320-303-131.19.4.2 HypochlorinationUnit. The hypochlorination unit is used to inject chlorine into the water supply, at asteady rate, to purify water for personnel consumption. The hypochlorination unit is skid mounted and poweredby an impulse diaphragm motor which operates on water pressure. Chlorine injection rate is controlled byadjustment of pump stroke. Water flow rate through the hypochlorination unit is controlled by adjusting in-linevalves. After controls are initially set no further adjustment is usually required. A proper chlorine dosage willbe injected into the water regardless of water flow rate through the hypochlorination unit. The operator isrequired to periodically fill the five gallon chlorine solution reservoir. Water is periodically tested at the manualdisbursing stations for chlorine content using a color comparator. Refer to applicable technical manual for afunctional description of hypochlorination units, model 1955-3 and model A-506131.1.19.4.3 HoseNetworkandManualDispersingStations .The hose network is used to transport water fromthe 20,000 gallon water storage assembly to the 125 GPM pumping assembly, hypochlorination unit, andmanual dispersing stations. A 2 inch x 20 foot rigid walled, hose assembly directs water flow from the 20,000gallon pillow tank to the 125 GPM pumping assembly. A 2 inch x 10 foot collapsible hose assembly directswater flow from the 125 GPM pumping assembly to the hypochlorination unit. Water flow from thehypochlorination unit to the manual dispersing stations is directed by a series of 2 inch x 20 foot hoseassemblies. Water flow to each of the manual disbursing stations is controlled by a 2 inch gate valve. Thehose network ends at four manual dispersing stations. Two manual dispersing stations are equipped withnozzles and two with elbow valves. The nozzles and elbow valves are stored on a nozzle stand assembly whennot in use. All hoses in the hose network are equipped with quick-disconnect fittings to allow for rapidinstallation and disassembly of the distribution point. Up to four 36 gallon water storage bags, suspended ontripods and fitted with faucets, are used to disperse water to personnel for canteens and other small containers.Operator is required to refill water storage bags periodically.1.19.5 TWDSSupportandSupplyKits .The TWDS is supplied with metal chests containing materialsrequired to construct suspension devices, repair 6 inch hoseline segments, and prepare 6 inch by 500 foothoseline segments for storage. The kits are detailed below. A functional description of each support andsupply kit is provided in the following paragraphs.1.19.5.1 SuspensionKit.The suspension kit is comprised of five metal chests containing kits of materials forconstructing suspensions across streams, ponds, or gullies. Each kit contains enough rope, cable, saddles,sheeve blocks, shackles, turnbuckles, and pickets to construct one suspension spanning 200 feet or two shorterspans. Materials suitable for constructing tripods are not included in the kit and must be procured or fabricatedlocally.1.19.5.2 DisplacementandEvacuationKit. The displacement and evacuation kit is used to remove waterand air from the hoseline prior to packing. An air compressor is required to operate the kit. Using compressedair as a propellent a polyurethane ball, which fits snugly within the hose, is forced through the hose. As the ballpasses through the hose it displaces the water. The ball is captured by a receiver after exiting the hose. Thehose end is then plugged and a vacuum is applied until the air within the hose is evacuated and the hosecollapses. As the hose collapses, end caps are installed to prevent the hose from expanding before it ispacked.1.19.5.3 HoselineRepairKit. This kit includes enough adapters and couplings to make up to three hoserepairs on the 6 inch hose assemblies. Two hose clamps are provided to isolate hose sections while repairs arebeing performed.1-17/(1-18 Blank)
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