ATCP 93.305 Note Note: Design standards recognized by NFPA 30 chapter 21 include API 12B, API 12D, API 12F, API 650, UL 58, UL 80, UL 142, UL 1316, UL 1746, UL 2080 and UL 2085.

ATCP 93.305(3) (3) Tank size and installation requirements.

ATCP 93.305(3)(a) (a) The tank may be of any size.

ATCP 93.305(3)(b) (b) Tanks located outdoors shall comply with the setback requirements of NFPA 30 Tables 22.4.1.1 (a) and (b) for a Class IIIA liquid.

ATCP 93.305(3)(c) (c) Tanks located inside a building shall have venting that terminates outdoors.

ATCP 93.305(4) (4) Diking.

ATCP 93.305(4)(a) (a) A single-wall tank shall be placed within a diked area that complies with s. ATCP 93.420.

ATCP 93.305(4)(b) (b) A tank of double-wall construction, that is accessible to the public, shall be placed within secondary containment which meets all of the following requirements:

ATCP 93.305(4)(b)1. 1. Any curb shall have a height of at least 4 inches.

ATCP 93.305(4)(b)2. 2. The containment shall extend at least 2 feet beyond the greatest tank dimension in all directions.

ATCP 93.305(4)(c) (c) The tank shall be set back from the curb or dike wall such that an overflow of the tank will be contained within the diked or curbed area.

ATCP 93.305(4)(d) (d) The fill opening with spill containment shall be located within the diked or curbed area.

ATCP 93.305 History History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19.

ATCP 93.310 ATCP 93.310 Heating fuel storage.

ATCP 93.310(1) (1) Scope. This section applies to any new or existing aboveground or underground tank that is used to supply liquid fuel to a heating device, including a used oil burner, if the device and the fuel have the following characteristics:

ATCP 93.310(1)(a) (a) The heating device is used for space heating, processing or manufacturing.

ATCP 93.310(1)(b) (b) The fuel is consumed on the premises where stored.

ATCP 93.310 Note Note: Number 5 and 6 fuel oil do not meet the criteria for a liquid and therefore are not regulated by this chapter.

ATCP 93.310(2) (2) Installation, use and maintenance.

ATCP 93.310(2)(a) (a) Tanks that supply oil-burning equipment shall be installed, used and maintained in accordance with NFPA 31 and this section.

ATCP 93.310(2)(b) (b) Tanks used to store heating fuel shall be installed by or under the direct supervision of a certified installer.

ATCP 93.310 Note Note: Tanks installed at 1- or 2-family dwellings are not required to have plan review under s. ATCP 93.100, and aboveground tanks that have a capacity of less than 1,100 gallons are not required to have registration under s. ATCP 93.140.

ATCP 93.310 Note Note: Devices that burn used oil are regulated by the Commercial Building Code, chs. SPS 361 to 366, and the Fire Prevention Code, ch. SPS 314. The tank that stores the oil is regulated by this chapter.

ATCP 93.310(3) (3) Underground tanks that have a capacity of less than 4,000 gallons. Underground heating oil storage tank systems that have a capacity of less than 4,000 gallons shall have all of the following:

ATCP 93.310(3)(a) (a) Overfill prevention equipment that notifies the person filling the tank, with either an audible or a visual signal, that the liquid level has reached 90 percent of the tank’s capacity.

ATCP 93.310(3)(b) (b) Corrosion protection that complies with s. ATCP 93.520, except this requirement does not apply to tanks that were installed before November 1, 1994.

ATCP 93.310(3)(c) (c)

ATCP 93.310(3)(c)1. 1. Precision tightness testing every 2 years or leak detection in accordance with s. ATCP 93.510, except this requirement does not apply to residential tanks which have a capacity of less than 1,100 gallons and which were installed before October 29, 1999, for consumptive use on the property where stored.

ATCP 93.310(3)(c)2. 2. The tightness testing or leak detection methods used to comply with subd. 1. shall be specifically approved for use with the specific type of heating oil in accordance with s. ATCP 93.130.