mission, the distribution points may not be required and the distribution
points can only be installed in conjunction with a storage assembly.
Storage and distribution site requirements and operational procedures are
covered in detail in Lesson 2 of this ACCP.
PART C - SUPERVISE TWDS INSTALLATION
1. Installing the 10-mile segment consists of installing a 6-inch hard-
walled suction hose to connect the lead pumping station and the water
source, installing road-crossing guards and aerial suspensions as required,
laying the hose line, and, if required, installing the pressure-reducing
a. Depending on the route selected for the hose line, the results of
pressure loss/gain calculations, and the intended mission of the TWDS, the
road-crossing guards, aerial suspensions, and pressure-reducing valve may
not be required.
b. If one or all of these items need to be installed, the equipment
should be transported to its respective installation site so that
installation can occur in conjunction with the hose line-laying operation.
2. The hose line is installed by flaking the hose from the rear of a moving
truck and manually moving the hose to a secure position.
a. The 500-foot lengths of hose line are connected together using
victualic couplings on the leading end of the hose line lengths. At every
other connection, a swivel joint must be installed. To install the swivel
joints, use the victualic coupling on the leading end of the hose line
length and an additional victualic coupling to connect the swivel joint to
b. When the truck moves forward along a predetermined route, the hose
flakes out of the flaking boxes and is manually laid out behind the truck.
As the hose flakes out, it must be picked up and moved to a secure position
5 to 10 feet from the roadway and any bends or kinks in the hose line
The recommended hose-laying speed is approximately 3 MPH.
The optimum speed of any hose-laying operation varies depending upon the
terrain, available manpower, and how far the hose must be moved between the
point at which it flakes off the truck and its final secured position. The
hose must not be left exposed on any roadway or track which is traveled by
3. The overall manpower and equipment requirements for a hose line laying
or retrieval operation are as follows: