CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER R—NAUTICAL SCHOOLS (parts 166 to 169) > PART 169—SAILING SCHOOL VESSELS > SUBPART 169.600—Machinery and Electrical (§169.601 to §169.693) > 169.627—Compartments containing diesel fuel tanks.

169.627—Compartments containing diesel fuel tanks.

Unless they are adequately ventilated, enclosed compartments or spaces containing diesel fuel tanks and no machinery must be provided with a gooseneck vent of not less than 2 1/2 inches in diameter. The vent opening must not be located adjacent to possible sources of vapor ignition.