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CODE OF FEDERAL REGULATIONS – TITLE
33 – NAVIGATION AND NAVIGABLE WATERS
PART 183—BOATS AND ASSOCIATED
EQUIPMENT
Subpart J—Fuel Systems
Sec. 183.534—Fuel filters and strainers
If tested under Sec. 183.590, each fuel filter
and strainer, as installed in the boat, must not leak more
than five ounces of fuel in 2-1/2 minutes inclusive of leaks
from the fuel pump and fuel line.
[CGD 77-98, 42 FR 36253, July 14, 1977]
Sec. 183.536—Seals and gaskets in
fuel filters and strainers
(a) [Reserved]
(b) Each gasket and each sealed joint in a fuel
filter and strainer must not leak when subjected for 24 hours
to a gasoline that has at least a 50 percent aromatic content
at the test pressure marked on the fuel tank label.
[CGD 81-092, 48 FR 55737, Dec. 15, 1983]
Sec. 183.538—Metallic fuel line materials
Each metallic fuel line connecting the fuel
tank with the fuel inlet connection on the engine must:
(a) Be made of seamless annealed copper, nickel
copper, or copper-nickel; and
(b) Except for corrugated flexible fuel line,
have a minimum wall thickness of 0.029 inches.
Sec. 183.540—Hoses: Standards and
markings
(a) “USCG Type A1” hose means hose
that meets the performance requirements of:
(1) SAE Standard J1527DEC85, Class 1 and the
fire test in Sec. 183.590; or
(2) Underwriters’ Laboratories, Inc.
(UL) Standard 1114.
(b) “USCG Type A2” hose means hose
that meets the performance requirements of SAE Standard J1527DEC85,
Class 2 and the fire test in Sec. 183.590.
(c) “USCG Type B1” hose means hose
that meets the performance requirements of SAE Standard J1527DEC85,
Class 1.
(d) “USCG Type B2” hose means hose
that meets the performance requirements of SAE Standard J1527DEC85,
Class 2.
Note: SAE Class 1 hose
has a permeation rating of 100 grams or less fuel loss per
square meter of interior surface in 24 hours.
SAE Class 2 hose has a permeation rating of
300 grams or less fuel loss per square meter of interior surface
in 24 hours.
(e) Each “USCG Type A1,” “USCG
Type A2,” “USCG Type B1,” and “USCG
Type B2” hose must be identified by the manufacturer
by a marking on the hose.
(f) Each marking must contain the following
information in English:
(1) The statement “USCG TYPE (insert
A1 or A2 or B1 or B2).”
(2) The year in which the hose was manufactured.
(3) The manufacturer’s name or registered
trademark.
(g) Each character must be block capital letters
and numerals that are at least one eighth-inch high.
(h) Each marking must be permanent, legible,
and on the outside of the hose at intervals of 12 inches or
less.
[CGD 85-098, 52 FR 19728, May 27, 1987]
Sec. 183.542—Fuel systems
(a) Each fuel system in a boat must have been
tested by the boat manufacturer and not leak when subjected
to the greater of the following pressures:
(1) Three pounds per square inch; or
(2) One and one-half times the pressure created
in the lowest part of the fuel system when it is filled
to the level of overflow with fuel.
(b) The test pressure shall be obtained with
air or inert gas.
[CGD 81-092, 48 FR 55737, Dec. 15, 1983]
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