ATCP 93.440 NoteNote: STI SP001 requires monthly and annual inspections and requires maintaining records of these inspections. For almost all ASTs that have a capacity of 5,000 gallons or less, these inspections are only required to be visual. For most tanks that have a capacity of more than 5,000 gallons, the requirements include, but are not limited to, having a certified inspection every 20 years, consisting of a visual exam and spot, ultrasonic examination, with no requirement for an integrity pressure test. STI SP001 includes optional checklists that may be used for the required record keeping. These checklists and a compendium that contains further guidance for these inspections are available from the Bureau of Weights and Measures, P. O. Box 8911, Madison, WI 53708-8911, or at telephone (608) 224-4942, or from the Bureau’s Web site at https://datcp.wi.gov/Pages/Programs_Services/PetroleumHazStorageTanksForms.aspx. ATCP 93.440 NoteNote: Tanks that are not required by this paragraph to have periodic inspections may otherwise be required to have periodic inspections, by the federal Spill Prevention Control and Countermeasure regulations in 40 CFR 112. ATCP 93.440 NoteNote: Heating oil tanks and tanks at farms and construction projects are subject to the requirements in NFPA 31 or 30A under ss. ATCP 93.310 and 93.630, respectively. ATCP 93.440(3)(b)1.1. The inspection schedule required in par. (a) shall be based on the tank’s time in service. ATCP 93.440(3)(b)2.2. Monthly inspections may be omitted for seasonal-use tanks during periods when the tank does not contain a regulated substance. ATCP 93.440(3)(c)(c) If product is found within a tank’s interstitial space during an inspection under this subsection, delivery of product into the tank shall be immediately suspended, and either of the following actions shall be taken within 10 business days: ATCP 93.440(3)(c)1.1. A vacuum or pressure test shall be performed in accordance with the manufacturer’s recommendations. ATCP 93.440 NoteNote: See sub. (5) for further requirements for corrective action.
ATCP 93.440(4)(4) Inspection of nonmetallic aboveground storage tanks. ATCP 93.440(4)(a)(a) The owner or operator of all nonmetallic aboveground storage tanks — including concrete, tile-lined, fiber-reinforced plastic, and homogeneous plastic tanks — that have a capacity of 1,100 gallons or more shall have the tanks inspected in accordance with all of the following: ATCP 93.440(4)(a)1.a.a. At least monthly there shall be a visual inspection of the tank exterior, pipe connections and secondary containment, for signs of leakage, physical damage, and environmentally induced degradation. ATCP 93.440(4)(a)2.a.a. At least annually there shall be a visual inspection of tank supports and foundation for signs of physical damage and chemically or environmentally induced degradation. ATCP 93.440(4)(a)2.b.b. At least annually there shall be a test of the functionality of the tank venting system, if so equipped. ATCP 93.440(4)(a)3.3. ‘Qualifications for inspection.’ The monthly and annual inspections shall be done by owners, contractors or operations personnel, who are knowledgeable of the facility operations, the tank construction and operation, and the characteristics of the product stored. ATCP 93.440(4)(a)4.4. ‘Every 5 years.’ At least every 5 years, there shall be an external and internal examination of tank and pipe connections for physical or chemical damage or environmentally induced degradation, conducted by personnel trained and experienced in examining the specific tank construction type. ATCP 93.440(4)(b)(b) HIR FTV RP 2007, In-service Inspection of Aboveground Atmospheric Fiberglass Reinforced Plastic Tanks and Vessels, may be used as an alternative to the sub. (4) (a) requirements for fiberglass reinforced plastic tanks. ATCP 93.440(5)(a)(a) If a suspected or obvious release is encountered during the inspections under this section, a tank-system site assessment shall be conducted in accordance with s. ATCP 93.465 before the tank is returned to service. ATCP 93.440(5)(b)(b) All corrective actions, including repairs that are indicated by the inspections under this section, shall be completed before the tank system is returned to service. ATCP 93.440 NoteNote: Under s. ATCP 93.400 (11) (a) 1., (b) 1., and (c) 9., records of the inspections that are required under this section must be maintained at the storage-tank site for at least either three years or the interval between inspections, whichever is longer. ATCP 93.440 HistoryHistory: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19. ATCP 93.445ATCP 93.445 Seldom-used and temporarily out of service tank systems. ATCP 93.445(1)(1) Operational requirements. Owners or operators of aboveground seldom-used and temporarily out of service tanks shall comply with the applicable requirements of s. ATCP 93.545 (1).