5704.2.13.2 Aboveground tanks.

Aboveground tanks taken out of service shall comply with the requirements of FC 5704.2.13.2.1 through 5704.2.13.2.3.

5704.2.13.2.1 Fuel conversions.

A fuel oil storage tank removed from service by reason of conversion of the heating system to an alternative fuel or power source, or other replacement of the tank, shall be sealed or removed from the premises in compliance with FC 5704.2.13.2.3 at the time of conversion or replacement.

5704.2.13.2.2 Out of service for 30 days.

Except as otherwise provided in FC 5704.2.13.2.1, aboveground tanks not used for a period of 30 calendar days or more shall be removed from the premises or sealed in place in compliance with the requirements of FC 5704.2.13.2.3, or safeguarded in compliance with the following requirements:

   1.   Tank and connecting piping shall be safeguarded in accordance with FC 5704.2.13.1.2.

   2.   The tank shall be protected from flotation in accordance with good engineering practice.

5704.2.13.2.3 Out of service for 1 year.

Except as otherwise provided in FC 5704.2.13.2.1, aboveground tanks that have been out of service for a period of 1 year or more shall be removed from the premises or sealed in place in compliance with the following requirements:

   1.   Flammable and combustible liquids shall be removed from the tank and connected piping.

   2.   The tank and connecting piping shall be rendered free of flammable and combustible vapors using an inert gas.

   3.   The tank shall be disconnected from system piping and removed from the premises, or filled completely with an approved, inert solid material, and sealed in place.

   4.   All system piping, including fire extinguishing system lines, fill line, gauge opening, and vapor return and pump connection, shall be disconnected from the tank and removed from the premises, or sealed in place and secured from tampering. Unless other methods are approved, the fill connection shall be cut from the fill piping and removed; the fill piping shall be capped or plugged; and the spill containment box shall be removed.

   5.   Tank openings shall be capped and plugged, leaving a 0.125-inch to 0.25-inch-diameter (3.2-mm to 6.4-mm-diameter) opening for pressure equalization, when tanks are removed from the premises.

   6.   The tank shall be protected from flotation in accordance with good engineering practice.

   7.   The tank shall be stenciled with the date that it was sealed in place.

5704.3 Container storage.

Storage of flammable and combustible liquids in barrels, and in closed containers that do not exceed 60 gallons (227 L) in individual capacity, and transfers incidental thereto, shall comply with the requirements of this section. It shall be unlawful to store flammable and combustible liquids in containers with an individual capacity of greater than 60 gallons (227 L).

5704.3.1 Design, construction and capacity of containers.

The design, construction and capacity of containers for the storage of flammable and combustible liquids shall be in accordance with this section and NFPA 30. It shall be unlawful to store flammable and combustible liquids in portable tanks, intermediate bulk containers and fiber drums.

5704.3.1.1 Approved containers.

Only approved containers shall be used.

5704.3.1.2 Barrel storage of distilled spirits.

Barrels containing distilled spirits shall be stored in a liquid warehouse in accordance with FC 5704.3.8 and the rules.

5704.3.2 Liquid storage cabinets.

Where other sections of this code require that liquid containers be stored in storage cabinets, such cabinets and storage shall be in accordance with FC 5704.3.2.1 through 5704.3.2.3.