1305.7.5 Multiple Tanks.
MC § 1305.7.5
A normal vent pipe shall be provided for each storage tank. Normal vent piping from multiple tanks of the same grade oil with not more than 660 gallons (2498.3 L) aggregate capacity may be combined. Where a battery of storage tanks complying with the alternate tank design and construction standards contained in Section 1305.14 designed to hold the same grade of oil with not more than 660 gallons (2498.3 L) aggregate capacity is installed, normal vent pipes may be run into a main header.
