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Fuel
Systems
Equipment Standards
FEDERAL LAW
183.510 - Fuel tanks
(a) Each fuel tank in a boat must have
been tested by its manufacturer under Sec. 183.580
and not leak when subjected to the pressure marked on
the tank label under Sec. 183.514(b)(5). |
Each fuel tank must be tested to see if it
leaks. This leakage test includes all fittings supplied as
part of the tank.
TEST PRESSURE
The test pressure must be the greater of 3
Pounds per square inch gauge (psig) or 1-1/2 times the pressure
created at the lowest point in the fuel system when the fill
or vent line, whichever is lower in height, is filled to its
top with fuel, as indicated in 183.542.
A 3 psig test will cover installations whose height from the
lowest point in the fuel system is 6.4 feet to the lower of
the fill or vent. See Figure 5 for height covered by various
pressures. These heights refer to a head of gasoline and take
into account the one and one-half times the head. The determined
pressure is the minimum pressure that must appear on the fuel
tank label. For the test procedure, refer to 183.580.
Normally, the test is conducted by the tank manufacturer who
applies the tank label. The boat manufacturer is responsible
for determining that this test has been performed on the tank,
in addition to the fuel system pressure test required by 183.542.
FIGURE
4 - Fuel Tank Pressure
FIGURE
5 - Pressure versus Height
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