Are there any relaxation of the rules for Class IIIB liquids storage tanks?
A. Yes. In consideration of the absence of fire history related to the storage of Class IIIB liquids along with an examination of the nationally-recognized standard for the storage of flammable and combustible liquids – National Fire Protection Association (NFPA) Standard #30 the OSFM now, by policy, modifies the applicable rules for the regulation of Class IIIB combustible liquids in aboveground storage tanks. Aboveground storage tanks for Class IIIB combustible liquids are now granted the following exceptions to the requirements set forth in Title 41 Illinois Administrative Code Part 160 “Storage, Transportation, Sale and Use of Gasoline and Volatile Oils: Rule and Regulations Relating to General Storage” : • Aboveground Class IIIB liquids are not required to be equipped with secondary containment. • Aboveground Class IIIB liquid storage tanks are not required to be electrically grounded. • Aboveground Class IIIB liquid storage tanks are required to be separated from combustible mate
