4. How are liquefied petroleum gas tanks classified for application procedures and rule enforcement in Illinois?
lpg tanks are addressed separately from dispensing or bulk storage tanks holding flammable and combustible liquid storage tanks. LP-Gas tanks store liquid under pressure in the tank. At normal pressures and temperatures, the product is a gas. Title 41 Ill. Adm. Code 200 provides the regulations for the installation of LPG tanks.
If a LP-Gas tank is installed underground, or mounded in earth, what rules/applications apply? An LP-Gas tank, whether installed above or below ground, is considered an LP-Gas tank by OSFM. The OSFM retains jurisdiction for the inspection of these tanks and a regular LP-Gas tank installation application should be submitted. NFPA 58 contains special rules when a LP-Gas tank is installed underground or under a mound of earth). An underground LP-Gas tank is NOT considered an underground petroleum storage tank by the OSFM and the rules for underground storage tanks found in 41 Ill. Adm. Code 170 do not apply.
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