Major changes in the 2024 edition include:
- Removing unstable liquid requirements throughout the code and refer to NFPA 400, Hazardous Materials Code, for these requirements. A new annex has been added to the rationale for the 2021 edition nomenclature change to ignitible liquid.
- Base requirements have been established in Chapter 6 for drainage, containment, spill control, and explosion control.
- The liquid storage area terms have been consolidated into control area, liquid storage room, or liquid warehouse.
- Static electricity requirements have been revised throughout the code.
- A new section and an extensive annex on fire protection for processing facilities has been added, as well as an annex on emergency control systems.
- Flammable liquid storage cabinet operation requirements have been added.
- Flame mitigation devices are now required on flammable liquid safety cans to align NFPA 30 with UL/ULC 30, Metallic and Nonmetallic Safety Cans for Flammable and Combustible Liquids.
- Metal containers sizes have been increased to accommodate European containers.
- New requirements for storing distilled spirits in barrels have been added.
- The maximum allowable quantities of beverages and other consumer products containing 50 percent ethanol has been increased.
- The Chapter 16 design tables have been reformatted for ease of use.
- Listing (or approval) requirements have been added for overfill protection devices and pressure-vacuum vent devices.
- An annex has been added indicating that alternative fire control measures can be used where a hazard analysis shows that a pressure relief device will not provide fire protection.
- A new annex for evaluating tank spacing in light of thermal radiation modeling has been added.
- A new chapter on petroleum production tanks has been added, which includes a requirement to more adequately address an open recommendation from the CSB on security at petroleum production sites.