2A protected tank is a listed and labeled system that consists of a primary tank along with integral secondary containment which provides protection from physical damage and limits heat transfer from a high intensity liquid pool fire. Systems listed as complying with UL 2085 or an equivalent standard are considered protected tanks.
3A fire-resistant tank is a listed and labeled primary tank with or without integral secondary containment that provides protection from heat transfer from a high intensity liquid pool fire. Systems listed as complying with UL 2080 or an equivalent standard are considered fire-resistant tanks.
ATCP 93.615(5)(f)1.1. Diking or a similar system shall be used to provide secondary containment for aboveground tanks in accordance with NFPA 30 section 22.11.1 or 22.11.2. and s. ATCP 93.420. ATCP 93.615(5)(f)2.a.a. When any underground piping is installed as part of a new tank system or when 50 percent or more of a run is replaced, the piping shall be provided with approved secondary containment with approved leak detection. ATCP 93.615(5)(f)2.b.b. The material used for both the primary and secondary containment shall be liquid- and vapor-tight. ATCP 93.615(5)(g)(g) Collision protection. Aboveground motor fuel tanks shall be protected from vehicle impact in accordance with s. ATCP 93.430. ATCP 93.615(5)(h)2.2. All aboveground piping shall be of steel and be coated or otherwise protected to inhibit corrosion. ATCP 93.615(5)(h)3.3. Piping shall be supported against impact, vibration, expansion, and contraction. ATCP 93.615(5)(h)4.4. Collision protection shall be provided on all sides of aboveground piping not protected by a structure, building or dike wall. ATCP 93.615(5)(i)(i) Underground piping. Any underground piping shall comply with the leak detection requirements for pressurized piping specified in s. ATCP 93.510 (4). ATCP 93.615(5)(j)(j) Check valves. A check valve shall be installed in the piping at a point where connection and disconnection is made for tank vehicle unloading. The valve shall be protected from tampering. ATCP 93.615(5)(k)2.2. Tanks shall be provided with bottom loading or a fill pipe that terminates within 6 inches of the bottom of the tank. ATCP 93.615(5)(m)1.1. Tanks that are filled via handheld nozzles shall be constantly attended during product delivery and shall be provided with overfill prevention equipment which 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 93.615(5)(m)2.2. Tanks that are filled by means of a tight connection between the delivery hose and the fill pipe or a similar device acceptable to the department shall be equipped with overfill prevention equipment that will operate as follows, unless approved otherwise in writing by the department: ATCP 93.615(5)(m)2.a.a. Alert the transfer operator when the tank is no more than 90 percent full by triggering an audible and visual high-level alarm. ATCP 93.615(5)(m)2.b.b. Automatically shut off the flow of liquid into the tank when the tank is no more than 95 percent full. ATCP 93.615(5)(n)(n) Leak detection for aboveground tanks. Leak detection for aboveground tanks shall be provided in accordance with one of the following: ATCP 93.615(5)(n)1.1. Where dikes are provided, a minimum of 2 feet shall be provided between any new tank and the toe of the dike walls, and a minimum of 3 inches shall be provided between the bottom of any new tank and the dike floor, to allow for visual inspection of the exterior tank surface, except as provided in subd. 2. or as otherwise approved by the department. ATCP 93.615(5)(n)2.2. Where double-walled tanks are used or where clearances for visual inspection of the primary containment surface are not provided as specified in subd. 1., interstitial monitoring shall be provided as specified in s. ATCP 93.515 (7).