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42.3.3.3.1
Fire-resistant tanks shall be tested and listed in accordance with UL 2080, Fire Resistant Tanks for Flammable and Combustible Liquids. [30:22.9.1]
42.3.3.3.2
Fire-resistant tanks shall also meet both of the following requirements:
  1. The construction that provides the required fire-resistive protection shall reduce the heat transferred to the primary tank in order to limit the temperature of the primary tank to an average maximum rise of 800°F (430°C) and a single point maximum rise of 1000°F (540°C) and to prevent release of liquid, failure of the primary tank, failure of the supporting structure, and impairment of venting for a period of not less than 2 hours when tested using the fire exposure specified in UL 2080.
  2. Reduction in sizing of the emergency vents in accordance with 22.7.3.5 of NFPA 30 shall not be permitted.
[30:22.9.2]

Related Code Sections

42.3.3.3 Refueling, Additional Requirements for Fire-Resistant Aboveground Storage Tanks
of the following requirements: The construction that provides the required fire-resistive protection shall reduce the heat transferred to the primary tank ...