46 C.F.R. § 154.401 Definitions.
Title 46 - Shipping
As used in §§154.440 and 154.447: “σY” means the minimum yield strength of the tank material, including weld metal, at room temperature. “σB” means minimum tensile strength of the tank material, including weld metals, at room temperature.
Title 46: Shipping
PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES
Subpart C—Design, Construction and Equipment
Cargo Containment Systems
§ 154.401 Definitions.

