Not more than 120 gallons of Class I, Class II, and Class IIIA liquids may be stored in a storage cabinet. Of this total, not more than 60 gallons may be Class I and II liquids. Not more than three such cabinets (120 gallons each) may be located in a single fire area except in an industrial area.
The capacity of flammable and combustible liquid containers will be in accordance with the below table.
Maximum allowable capacity of containers and portable tanks
| Flammable Liquids | Combustible Liquids | ||
| Container | 1A 1B 1C II | III | |
| Glass or approved plastic1 | 1 pt2 1 qt2 1 gal 1 gal | 1 gal | |
| Metal (Other than DOT drums) | 1 gal 5 gal 5 gal 5 gal | 5 gal | |
| Safety Cans | 2 gal 5 gal 5 gal 5 gal | 5 gal | |
| 60 | |||
| Metal drums (DOT specifications) | 60 gal 60 gal 60 gal 60 gal | ||
| gal | |||
| Approved portable tanks | 660 gal 660 gal 660 gal 660 gal | 660 gal | |
| (1) Nearest metric size is | also | acceptable for the glass | and plastic |
(2) One gallon or nearest metric equivalent size may be used if metal and labeled with their contents.
Where approved storage cabinets or rooms are not provided, inside storage will comply with the following basic conditions:
The storage of any flammable or combustible liquid shall not physically obstruct a means of egress from the building or area.
Containers of flammable or combustible liquids will remain tightly sealed except when transferred, poured or applied. Remove only that portion of liquid in the storage container required to accomplish a particular job.
If a flammable and combustible liquid storage building is used, it will be a one-story building devoted principally to the handling and storing of flammable or combustible liquids. The building will have 2-hour fire-rated exterior walls having no opening within 10 feet of such storage.
Flammable paints, oils, and varnishes in 1 or 5 gallon containers, used for building maintenance purposes, may be stored temporarily in closed containers outside approved storage cabinets or room if kept at the job site for less than 10 calendar days.
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