Section 160.80  Venting of Tanks – Normal Vents

a)         Each tank over 100 gallons in capacity shall have vent openings, or pressure vacuum vents in accordance with NFPA 30 (1981).

b)         Vent openings shall in no case be less than one and one-fourth inches in diameter, and where a power pump is used in filling the tanks, and a tight connection is made to the fill pipe, the vent shall not be smaller than the fill pipe.

(Source:  Amended at 9 Ill. Reg. 10012, effective October 1, 1985)