46 CFR § 172.047
Specific applicability
April 15, 2021
This section applies to each tank barge that carries, in independent tanks described in §151.15-1(b) of this chapter, a cargo listed in Table 30.25-1 of this chapter that is a—
(a) Liquefied flammable gas; or
(b) Flammable liquid that has a Reid vapor pressure in excess of 25 pounds per square inch (172.4 KPa).