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§182.435 Integral fuel tanks.
(a) Gasoline fuel tanks must be independent of the hull.
(b) Diesel fuel tanks may not be built integral with the hull of a vessel unless the hull is made of:
(2) Aluminum; or
(3) Fiber reinforced plastic when:
(i) Sandwich construction is not used; or
(ii) Sandwich construction is used with only a core material of closed cell polyvinyl chloride or equivalent.
(c) During the initial inspection for certification of a vessel, integral fuel tanks must withstand a hydrostatic pressure test of 35 kPa (5 psig), or the maximum pressure head to which they may be subjected in service, whichever is greater. A standpipe of 3.5 meters (11.5 feet) in height attached to the tank may be filled with water to accomplish the 35 kPa (5 psig) test.
[CGD 85-080, 61 FR 986, Jan. 10, 1996, as amended at 62 FR 51358, Sept. 30, 1997]