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ATCP 93.360 Note Note: See ch. SPS 341 for additional requirements that may apply to flammable liquid storage in pressure vessels at pressures greater than 15 psig.
ATCP 93.360 History History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19.
ATCP 93.370 ATCP 93.370 Emergency shutoff for transfers.
ATCP 93.370(1)(1)An emergency electrical shutoff shall be installed in accordance with NFPA 30A section 6.7 on any new or existing system that provides for the transfer of product from a fixed storage tank system to a tank vehicle rail tank car or vehicle fuel tank.
ATCP 93.370(2) (2) The emergency electrical shutoff shall be tested annually. Annual testing for UST systems shall be documented on the functionality verification form, TR-WM-139.
ATCP 93.370 History History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19.
subch. IV of ch. ATCP 93 Subchapter IV — General AST Storage
Subch. IV of ch. ATCP 93 Note Note: The requirements in this subchapter are general requirements. Under s. ATCP 93.020 (7) (b), wherever subchapter III prescribes a specific or more detailed requirement regarding the same subject, that subchapter III requirement governs instead of the requirement in this subchapter.
ATCP 93.400 ATCP 93.400 General requirements.
ATCP 93.400(1)(1)Aboveground tank design.
ATCP 93.400(1)(a) (a) General. Tanks designed and built for underground use may not be used aboveground.
ATCP 93.400(1)(b) (b) Tanks for Class I, II, or IIIA liquids. Tanks used for aboveground storage of Class I, II, or IIIA liquids shall comply with the tank construction and marking requirements in s. ATCP 93.250.
ATCP 93.400(1)(c) (c) Tanks for Class IIIB liquids. Tanks which have a capacity of 1,100 gallons or more and which are used for aboveground storage of Class IIIB liquids shall be listed or shall be acceptable to the department.
ATCP 93.400 Note Note: See s. ATCP 93.130 (5) for listing and labeling requirements for aboveground tanks.
ATCP 93.400(1)(d) (d) Tank foundations. Tank foundations shall be designed to prevent uneven settling of the tank. Tank supports shall be placed on a prepared, flat, smooth, and solid surface.
ATCP 93.400(2) (2)Corrosion protection.
ATCP 93.400(2)(a)(a) General. Aboveground storage tank systems shall be protected from excessive external corrosion through the use of paint, protective coatings, or corrosion resistant materials that are applied after the surface has been prepared in accordance with the manufacturer's recommendations.
ATCP 93.400(2)(b) (b) Tank systems. Any portion of an aboveground tank system that is in contact with the ground shall be protected from corrosion by one of the following methods:
ATCP 93.400(2)(b)1. 1. The tank system is constructed of an inherently corrosion-resistant material.
ATCP 93.400(2)(b)2. 2. The tank system is isolated from the ground by a method acceptable to the department.
ATCP 93.400 Note Note: Methods of isolation acceptable to the department include dielectric coating, placement on clean concrete, placement on an elevated ring wall, or mounting on listed saddles.
ATCP 93.400(2)(b)3. 3. The tank system is protected by a sacrificial anode or impressed current system.
ATCP 93.400(2)(b)4.a.a. Single- or double-wall tanks which are constructed of material subject to corrosion and which are supported on runners or tank supports shall be constructed such that the bottom of the tank shell is at least 3 inches but no more than 12 inches above grade, as measured from the lowest point of the tank shell, except the 12-inch maximum does not apply where subd. 4. b. is met.
ATCP 93.400(2)(b)4.b. b. The 12-inch maximum in subd. 4. a. may be exceeded where structural fire resistance is provided that complies with NFPA 30 section 22.5.2.4.
ATCP 93.400(2)(c) (c) Underground piping. All new and existing underground piping connected to an aboveground tank shall be protected from corrosion using one of the methods in s. ATCP 93.520 (1).
ATCP 93.400(2)(d) (d) Designed corrosion protection systems.
ATCP 93.400(2)(d)1. 1. Aboveground tank systems equipped with a new sacrificial anode or impressed current corrosion protection system shall follow the installation, operation, maintenance and testing requirements in s. ATCP 93.520.
ATCP 93.400(2)(d)2. 2. Existing sacrificial anode or impressed current corrosion protection systems shall follow the operation, maintenance and testing requirements in s. ATCP 93.520.
ATCP 93.400(3) (3)Secondary containment for piping.
ATCP 93.400(3)(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 non-discriminating interstitial monitoring, except as specified in par. (g).
ATCP 93.400(3)(b)1.1. The material used for fabricating both the primary and secondary containment shall be listed in accordance with a standard that assures liquid- and vapor-tightness.
ATCP 93.400(3)(b)2. 2. Secondary containment sumps shall be fabricated and installed in a manner that prevents release of liquids. These sumps shall be tested for leaks hydrostatically at installation, in accordance with the manufacturer's instructions and the adopted standard PEI RP 1200.
ATCP 93.400(3)(c) (c) All pipe connections at a dispenser for motor vehicle fueling that are installed or replaced on or after February 1, 2009, shall be placed within a secondary containment sump at the time of installation or replacement, except as exempted in par. (e).
ATCP 93.400(3)(d) (d) All pipe connections at a dispenser for motor vehicle fueling that were in existence or under construction before February 1, 2009, shall be placed within a secondary containment sump by January 1, 2021, except as exempted in par. (e).
ATCP 93.400(3)(e) (e) A secondary containment sump is not required under the pipe connections at a dispenser if the storage tank system meets all of the following conditions:
ATCP 93.400(3)(e)1. 1. All piping is aboveground and readily accessible for inspection.
ATCP 93.400(3)(e)2. 2. The dispenser and all the pipe connections at the dispenser are on or above a surface that is at least as impermeable as concrete.
ATCP 93.400(3)(f) (f) All pipe connections at a transition between aboveground and underground piping that are installed or replaced on or after February 1, 2009, shall be placed within a secondary containment sump at the time of installation or replacement.
ATCP 93.400(3)(g) (g) Secondary containment is not required for underground piping that is evaluated and maintained in accordance with API 570, by organizations that maintain or use an authorized inspection agency, a repair organization, and technically qualified piping engineers, inspectors and examiners, all as defined in API 570.
ATCP 93.400(3)(h)1.1. Secondary containment sumps provided under this subsection shall have non-discriminating electronic sensors that will detect liquids in the sump, unless approved otherwise by the department.
ATCP 93.400(3)(h)2. 2. Piping that is installed or replaced on or after August 1, 2009, at secondary containment sumps provided under this subsection may not pass through the bottom of the sump.
ATCP 93.400(3)(h)3. 3. All electrical conduit and wiring that is installed or replaced on or after August 1, 2009, at secondary containment sumps provided under this subsection for dispensers shall pass over the top of the sump wall rather than through the wall or bottom of the sump.
ATCP 93.400 Note Note: This subsection recognizes dispenser pans, spray-on liners, brushed-on liners, formed-in-place containment products, and other effective secondary containment practices that are currently in use.
ATCP 93.400(4) (4)Leak detection for piping.
ATCP 93.400(4)(a) (a) All new and existing underground piping connected to an aboveground tank shall be provided with approved leak detection in accordance with s. ATCP 93.510 (4), except as specified in par. (c).
ATCP 93.400(4)(b) (b) Leak detection in accordance with par. (a) shall be installed immediately at the time of new installation or replacement of pipe.
ATCP 93.400(4)(c)1.1. Piping over 4 inches in diameter shall follow the plan and system requirements and deadlines in s. ATCP 93.517, except as specified in subd. 2. Leak detection for piping of 4 inches in diameter or less may be provided as specified in subd. 2. only if approved in writing by the department.
ATCP 93.400(4)(c)2. 2. Leak detection for piping may consist of evaluations that are performed in accordance with API 570, by organizations that maintain or use an authorized inspection agency, a repair organization, and technically qualified piping engineers, inspectors and examiners, all as defined in API 570.
ATCP 93.400(5) (5)Installation.
ATCP 93.400(5)(a)1.1. The installation of shop-built tanks and associated piping shall be performed or supervised by a certified installer under s. ATCP 93.240 (16).
ATCP 93.400(5)(a)2. 2. A certified installer shall verify that the installation of the electrical components for a tank system does not conflict with this chapter, except this verification is not required for the electrical criteria in ch. SPS 316.
ATCP 93.400(5)(b)1.1. All installation shall be in accordance with the manufacturer's instructions, the applicable national standards adopted in s. ATCP 93.200, and plans and specifications approved under s. ATCP 93.100 and this chapter.
ATCP 93.400(5)(b)2. 2. All tank and pipe systems that are installed on or after November 1, 2019, including replacement systems, shall undergo all of the following before the tank and pipe systems are placed into service:
ATCP 93.400(5)(b)2.a. a. Pressure testing that shall assure that the tank, pipe, and all connections are tight in accordance with PEI RP200 sections 6.6 and 9.6 and chapter 14.
ATCP 93.400(5)(b)2.b. b. Pre-operational testing and inspection in accordance with PEI RP200 chapter 14.
ATCP 93.400(5)(c) (c) Single wall horizontal-cylindrical and rectangular aboveground storage tanks shall be installed to allow full visual inspection of the outer tank shell, except for any portion of the shell that is in contact with a support for it.
ATCP 93.400(5)(d) (d) The foundations for all types of tanks shall be designed to minimize the possibility of uneven settling and to minimize corrosion in any part of the tank resting on the foundation.
ATCP 93.400(5)(e) (e) Tank supports shall be placed on a prepared, flat, compacted surface.
ATCP 93.400(5)(em) (em) Vent piping shall meet the requirements of NFPA 30 Subchapter 27.8 except the termination height of normal vent piping for Class II and Class III liquids shall be a minimum of 4 feet above the ordinary snow line.
ATCP 93.400(5)(f) (f) Upon completion of any installation of new or replacement shop-built tanks or piping, or any modification or upgrade thereto that requires plan approval or registration, the certified installer shall provide the authorized agent or the department with a completed tank installation checklist, form TR-WM-120.
ATCP 93.400 Note Note: Form TR-WM-120 - Checklist for Aboveground Storage Tank Installation is available from the Bureau of Weights and Measures, PO 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 93.400(6) (6)Moving shop-built tanks. Aboveground shop-built tanks that are moved from one location to another shall meet all of the following requirements, except for tanks covered in s. ATCP 93.610:
ATCP 93.400(6)(a) (a) The tank shall meet all the plan review, installation, and registration requirements in this chapter for the new location.
ATCP 93.400(6)(b) (b) If the tank contained Class I liquids, it shall be rendered free of flammable vapors before the move and maintained vapor-free until placed into service at the new location.
ATCP 93.400(6)(c) (c) If the tank is relocated to a property with a different street address, a revised tank registration, form TR-WM-118 or TR-WM-153, and part A of a tank system service and closure assessment report, form TR-WM-140, shall be completed and submitted to the department for the former location.
ATCP 93.400 Note Note: Form TR-WM-118 — Aboveground Flammable/Combustible/Hazardous Liquid Storage Tank Registration; form TR-WM-140 — Tank System Service and Closure Assessment Report; and form TR-WM-153 — Change of Ownership, Flammable/Combustible/Hazardous Liquid Storage Tank Registration are available from the Bureau of Weights and Measures, PO Box 8911, Madison, WI 53708-8911, or at telephone (608) 224-4942. Forms TR-WM-118 and TR-WM-140 are also available from the Bureau's Web site at https://datcp.wi.gov/Pages/Programs_Services/PetroleumHazStorageTanksForms.aspx.
ATCP 93.400(6)(cm) (cm) If the tank is relocated on the same property, part A of a tank system service and closure assessment report, form TR-WM-140, shall be completed and submitted to the department for the former location.
ATCP 93.400(6)(d) (d) The tank shall undergo pre-operational testing and inspection in accordance with PEI RP200 chapter 14.
ATCP 93.400(6)(e) (e) The tank shall have an inspection performed by a certified tank system inspector before being placed into operation.
ATCP 93.400(6)(f) (f) The tank shall continue to follow the inspection schedule in STI SP001 that was established at the former location.
ATCP 93.400(7) (7)Aboveground tank marking.
ATCP 93.400(7)(a)1.1. All aboveground tanks, whether new or existing, that store Class I liquids, other than at refineries or at marine, pipeline, or transport terminals, shall have attached the wording, “FLAMMABLE—KEEP FIRE AWAY.”
ATCP 93.400(7)(a)2. 2. The wording shall be clearly visible and written in letters of a contrasting color at least 5 inches high with a minimum stroke width of one inch.
ATCP 93.400(7)(b)1.1. All aboveground tanks, whether new or existing, that store flammable or combustible liquids shall be labeled in accordance with NFPA 704.
ATCP 93.400(7)(b)2. 2. The visibility and size of the label shall be in accordance with Table 93.400.
Table 93.400
Tank Labels - See PDF for table PDF
ATCP 93.400(8) (8)Maintenance and repairs.
ATCP 93.400(8)(a)1.a.a. All shop-built aboveground steel storage tanks, whether new or existing, shall be maintained and repaired in accordance with STI SP031.
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.