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2-1.4 General Design Conditions Summary - Cont'd .
NOTES
(1)
Nominal maximum shut-in pressure should be operated at low pressure for personnel safety. Flow and
pressure to be regulated at pump to maintain safe but adequate rates and pressures for the particular
installation and loading circumstance. (see para. 4-16.5h)
2-2 General Layout and Plot Plans
The layout of a TPT must necessarily be flexible and fit the particular site selected. This manual, therefore, outlines a
number of alternatives and criteria and does not attempt to overly restrict the arrangement. Various potential plot plans
are shown in Fig.'s 2-2, 2-3a, 2-3b, 2-4a, 2-4b, 2-5a, 2-5b, 2-6 and 2-7. Other arrangements or modifications of these
may be more practical for a particular site. the plot plans include suggested arrangements of equipment. The routing of
hoselines is shown but the details of valves, fittings, and assembly are covered in other drawings and illustrations. The
objective in any equipment arrangement is to provide for efficiency and safety in operations. As a general rule, it is
recommended that the overall TPT and the fuel units be arranged in accordance with the maximum spacing plot plans to
the extent the particular operating site will permit. This will provide for the highest level of safety for the equipment and
the operating personnel without adversely affecting operating efficiency. The various plot plans presented are described
as follows.
2-2.1 Typical TPT Overall Plot Plan
a.
A typical TPT overall plot plan is shown in Fig. 2-2. The plot plan is an example of a TPT which has been
arranged to make full use of the hoseline provided for wide spacing between fuel modules. In many locations, due to
terrain or operational situations, the layout may have to differ substantially from that shown. if possible the dispensing
sets should be located generally upwind of the prevailing wind direction. Actual layouts are at the discretion of the
installing and operating authority in each case. Important information concerning all TPT layouts is, however, contained
in Figure 2-2.
b.
Road access should always be considered when planning a TPT site. Ideally, there should be a limited-number
of entry points into the TPT, with each entry point having a control or checkpoint to monitor and route traffic in and out of
the area. A road capable of supporting two-way tanker-truck traffic should run along the perimeter of the TPT site, giving
access to each fuel unit's fuel dispensing assembly. In the area of the fuel dispensing assemblies, the roadway should
be widened to a minimum of 40 feet. Traffic control measures should be made to route through traffic away from the fuel
dispensing area. Similar fuel handling areas are necessary for the contaminated fuel module and the tanker truck receipt
manifold.
c.
Although not shown on the plot plan, limited access roads within individual fuel modules must be provided to
allow material handling equipment in and out, for pump movement, fire suppression equipment, maintenance, etc. The
roadway crossing guards, which allow vehicles to cross over hose without damaging it (see para. 2-4.10), are to be
installed as necessary. Access must be provided to the pumps and near each tank berm.
d.
Another important item shown on the general plot plan is the location of the fire suppression equipment. A
trailer-mounted fire extinguisher capable of producing fire
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