46 C.F.R. § 153.463 Vent system discharges.
Title 46 - Shipping
The discharge of a venting system must be at least 10 m (approx. 32.8 ft) from an ignition source if: (a) The cargo tank is endorsed to carry a flammable or combustible cargo; and (b) Table 1 requires the cargo to have a PV venting system.
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart B—Design and Equipment
Special Requirements for Flammable or Combustible Cargoes
§ 153.463 Vent system discharges.
