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TM 10-3835-231-13
(j)
50,000 Gallon Tank Berms. The dimensions of a 50,000-gallon fabric collapsible tank are
Dry: 26 ft. X 66 ft.
Filled: 5 ft. X 8 in. X 24 ft, x 64 ft.
The minimum dimensions of the berm should be:
From toe of berm to tank wall when filled, 3 ft.
Berm height, to contain full tank with 1 ft. Freeboard, 4 ft. 6 in.
(k)
Berm Basin Drain. To provide a drain for the basin formed by the berms, a 2-inch or larger pipe with a
gate valve (used pipe and valves of any rating are acceptable) on the outside end may be installed in the bottom of the
berm at the lowest end of the tank pad (see figure 4-3 and 4-4). The valve must be normally closed and opened only to
drain water from the berm area. If a drain is not installed, the basin inside the berms may have to be pumped from time to
time, depending on the permeability of the soils and whether or not a sealing liner is installed. Drainpipe and valves are
not supplied with the TPT.
(1)
For additional information on collapsible fabric tanks, see TM 10-5430-219-12.
(5)
Pads for Other Equipment.
(a)
To the extent possible, all operating equipment should be set on virgin or cut soils rather than fill. If a
filled area cannot be avoided, it must be well compacted. This is particularly important for the pumps, fire suppression
equipment, and floodlight sets.
(b)
The areas on which equipment is placed should be covered with a 4-6 inch layer of coarse gravel or
crushed rock. The gravel or crushed rock should extend out and around the equipment for several feet. This will provide
a high and dry area from which to operate and maintain the equipment.
(c)
The same practice of placing coarse gravel or crushed rock at and around often-operated valve
stations is recommended as well.
d.
Fire Suppression Equipment. A wheel-mounted fire extinguisher should be located near each tank berm, at each
fuel dispensing assembly, at each tanker-truck receipt assembly, and at the contaminated fuel module. Extra units should
be stationed at a central point ready for use anywhere in the TPT. Covered shelters or containers for housing the fire
fighting clothing and extra fire fighting supplies should be provided at central, easily accessible locations around the TPT.
The 20-lb. hand-held fire extinguishers should be distributed and located at each pump, floodlight set, fuel dispensing
area, and other operating areas at the discretion of operating supervision. Personnel must be aware of the location of all
fire fighting equipment at all times in order to prevent confusion in an emergency. Readily place visible signs flagging the
locations of fire extinguishers.
e.
The Floodlight sets. These should be placed to give light to fuel dispensing areas, fuel receipts areas, and heavy
operating areas around the pumps and switching manifold.
f.
Tank Farm (Module) Assembly Layouts.
(1)
Due to varying site conditions and operational requirements, a single typical layout for the tank farm
modules in a TPT cannot be stipulated. Modifications will need to be made by the installation group in the field as
necessary.
(2)
The most important information to consider is the relative spacing between major components in the tank
farm modules. Distances shown are from a common starting point (i.e., the edge of a 5,000 bbl collapsible tank). By
beginning with the tank locations, the rest of the layout is defined, although some variation will occur due to uneven terrain,
obstacles (such as large rocks or trees), and small differences in the length of the hose sections. If layout changes are
made, it is most important that the valve logic of the system remain unchanged from that shown. If relationship between
valves is changed, the operating instructions provided in this manual must be changed accordingly, and all operating
personnel must be notified.
4-13
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