TM 10-4320-303-13
repositioning hoseline (6). He must also observe hose for catching or binding as it flakes out of box.
d. Linewalkers (5): A minimum of two linewalkers (5) are needed to follow behind each truck (2) and
perform the following tasks:
(1) Straighten out kinks or bends in hoseline.
(2) Remove small obstructions, branches, and sharp rocks which can damage hoseline.
(3) Check that swivel joint is installed at every 1,000 foot connection.
2.3.8.2.6 Empty hose is easily blown by strong winds, causing damage to installations and equipment. To
avoid high wind problems, pack newly-laid hose as soon as possible. Once lead pump and first boost pump are
connected by hoseline, reference applicable technical manual for pump operating procedures and packing
hoseline.
2.3.8.2.7 During hose-laying operations, it is essential that operators at pumping stations and storage
assemblies communicate with each other and with hose-laying crews. If a problem develops with the hose-
laying operation, immediately notify operators who are packing hoseline. If a problem occurs when hoseline is
packed, immediately notify hose-laying supervisor and other operators.
2.3.8.3 Assembly Requirements.
a. Assembly of the 10-mile hoseline segment requires the equipment and personnel outlined in
paragraphs 2.3.8.1 and 2.3.8.2. These requirements generally remain the same in each situation.
However, the number of components required for assembly will vary depending on the route and
terrain being crossed, as well as TWDS assigned mission.
b. Hoseline is packed in 33 crates marked "HOSE ASSEMBLY, 6 INCH, 500 FEET". Each crate
contains either two or four flaking boxes; each flaking box contains either one or two 500 feet hose
assemblies, respectively. Installation of a full 10-mile segment, along a direct route across even
terrain, will require at least 108 (54 if newer model flaking box) flaking boxes of hoseline (para
2.3.8.2.1).
c. One 6 inch grooved pipe coupling is required for each 500 foot hoseline assembly used. One swivel
point is required for every 1,000 feet of hoseline. For example, if 108 flaking boxes of hoseline are
used, then 108 grooved pipe couplings and 54 swivel joints are required for installation (para
2.3.8.5). If the newer style flaking boxes are used then only 54 grooved pipe couplings are required
and swivel joints are required.
d. Road crossing guards and suspension kits are used when the hoseline crosses roads or obstacles in
the terrain (such as streams, rivers, gullies, and ravines). Each road crossing guard is 5 feet in
length. If the width of a road being crossed is 15 feet, for example, then three or four road crossing
guards are required to protect the hoseline (para 2.3.8.6). Each suspension kit contains enough wire
rope to construct a span of 200 feet. Therefore, one suspension kit is required to cross a 150 foot
wide gap; or one suspension kit can be used to construct spans across two 75 foot wide gaps (para
2.3.8.7).
e. The pressure-reducing valve assembly is required when pressure at a certain point in the hoseline is
expected to exceed 225 psi. If the hoseline crosses over a steep hill or ridge, then a pressure-
reducing valve may be required on the "downhill" side of the hoseline route (para 2.3.1.9).
f. Other components contained in the "10-MILE HOSELINE SEGMENT" crate are used for various
purposes. The lifting sling is used when a forklift is not available to load flaking boxes onto trucks
(para 2.3.8.2.3.). The end cap is used when dead-end service is required (end of hoseline route
does not connect to a storage and/or distribution assembly). The repair kit is used to repair
damaged hoseline. The displacement and evacuation kit along with the packing kits are used to
recover and pack hoseline in flaking boxes.
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