StacksVerified U.S. regulatory reference

46 CFR §153.240

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Cargo containment system insulation made necessary by the requirements of this part must meet the requirements in § 38.05-20 of this chapter. However, the vapor barrier required by § 38.05-20(b) is unnecessary if the insulation is:
  1. (a)Protected from the weather, and attached to a containment system maintained at a temperature in excess of 46 °C (approx. 115 °F); or
  2. (b)In an atmosphere whose dew point is less than the temperature of any surface in contact with the insulation.