46 CFR §98.33-5

1. (a)The cargoes authorized under § 98.33-3 may be transferred to and from portable tanks to which this subpart applies if the portable tanks have:
   1. (1)A minimum design pressure of 9 psig.
   2. (2)Pressure-relief devices that may be frangible pressure-relief devices (rupture disks), and that do not open at less than 3 psig.
2. (b)The cargoes authorized under § 98.33-3 may be transferred to and from IBCs to which this subpart applies if the IBCs meet the requirements in § 98.30-6.