46 C.F.R. § 153.208 Ballast equipment.
Title 46 - Shipping
(a) Except for the arrangement described in paragraph (b) of this section no piping that serves a dedicated ballast tank that is adjacent to a cargo tank may enter an engine room or accommodation space. (b) Piping used only to fill a dedicated ballast tank adjacent to a cargo tank may enter an engine room or accommodation space if the piping has a valve or valving arrangement: (1) Within the part of the tankship where a containment system may be located under §153.234; (2) That allows liquid to flow only towards that ballast tank (such as a check valve); and (3) That enables a person to shut off the fill line from the weatherdeck (such as a stop valve). (c) Except as prescribed in paragraph (d) of this section, pumps, piping, vent lines, overflow tubes and sounding tubes serving dedicated ballast tanks must not be located within a cargo containment system. (d) Each vent line, overflow tube and sounding tube that serves a dedicated ballast tank and that is located within a cargo containment system must meet §32.60–10(e)(2) of this chapter. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78–128, 47 FR 21207, May 17, 1982]
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart B—Design and Equipment
General Vessel Requirements
§ 153.208 Ballast equipment.
