TM 10-4320-303-13
Table 2-7. Operator Preventive Maintenance Checks and Services for TWDS. (Continued)
Location
Not Fully
Item
Item to
Mission Capable
No.
Interval
Check/Service
Procedure
if:
DISTRIBUTION
POINT
HYPOCHLORINATION
UNIT MODEL 1955-1
45
Daily
Foot Valve
Flush hypochlorination unit
with clean water. Refer to
paragraph 2.8.6.2 and flush
hypochlorination unit.
SECTION III. OPERATION UNDER USUAL CONDITIONS
2.3 ASSEMBLY AND PREPARATION FOR USE.
2.3.1 TWDS Site Location and Pumping Station Spacing.
2.3.1.1 Terrain Survey. Prior to installing TWDS equipment, a thorough study of the terrain is required. A
general route for hoseline and general locations for the pumping stations, storage assemblies, and distribution
points can be determined from examination and comparison of maps, photographs, and charts. Some
elements to be considered in selecting a route and installation sites for TWDS are:
· Whether TWDS will operate independently or as part of a large system.
· TWDS assigned mission (i.e., dispensing, storing, or transferring water).
· Expected length of time TWDS will be required to operate.
· Elevation differences and distances TWDS will encounter along its route.
2.3.1.2 Pumping Station, Storage Assembly, and Distribution Point Location Reconnaissance.
Organize a ground reconnaissance prior to installation of TWDS to determine exact locations for pumping
stations, storage assemblies, and distribution points. If possible, site locations should be near or parallel to
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