Chapter ATCP 93

ATCP 93.530(2)(d)2.b. b. An approved set of plans is on the site.

ATCP 93.530(2)(d)2.c. c. The condition of the tank has been communicated to the owner.

ATCP 93.530(2)(dm) (dm) Tank integrity assessment after lining. After installing the lining, the tank-lining contractor shall have a tightness test performed on the tank ullage in accordance with s. ATCP 93.515 (10) to assure that all tank-top connections and openings are liquid- and vapor-tight.

ATCP 93.530(2)(e) (e) Completion of forms.

ATCP 93.530(2)(e)1. 1.

ATCP 93.530(2)(e)1.a. a. The certified tank system liner shall provide a completed, signed, and notarized API 1631 Form B inspection affidavit to the tank owner within 10 business days of completing the lining procedure.

ATCP 93.530(2)(e)1.b. b. The signature on API 1631 Form B shall be that of the certified tank system liner who conducted the pre-lining tank integrity assessment and the lining procedure.

ATCP 93.530(2)(e)2. 2. An underground tank installation checklist, form TR-WM-138, shall be completed and signed by the certified tank system liner and the certified tank system inspector.

ATCP 93.530 Note Note: Form TR-WM-138 — Checklist For Underground Tank Installation is available from the Bureau of Weights and Measures, PO Box 8911, Madison, WI 53708-8911, or at telephone [phone], or from the Bureau’s Web site at https://datcp.wi.gov/Pages/Programs_Services/PetroleumHazStorageTanks.aspx.

ATCP 93.530 Note Note: See s. ATCP 93.240, Certifications and Enforcement, for requirements that certified tank system liners perform or supervise specific lining-related activities involving underground storage tanks.

ATCP 93.530(2)(f) (f) Submittal of forms. The tank owner shall have all of the following documents submitted to the department within 15 business days of completing the lining procedure:

ATCP 93.530(2)(f)1. 1. The pre-lining and post-lining tank integrity assessments under pars. (c) and (e).

ATCP 93.530(2)(f)2. 2. The completed and signed API 1631, Form B under par. (e) 1.

ATCP 93.530(2)(f)3. 3. The tank installation checklist under par. (e) 2.

ATCP 93.530(2)(f)4. 4. A revised tank registration, form TR-WM-137.

ATCP 93.530 Note Note: Form TR-WM-137 — Underground Flammable/Combustible/Hazardous Liquid Storage Tank Registration is available from the Bureau of Weights and Measures, PO Box 8911, Madison, WI 53708-8911, or at telephone [phone], or from the Bureau’s Web site at https://datcp.wi.gov/Pages/Programs_Services/PetroleumHazStorageTanks.aspx.

ATCP 93.530 History History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19.

ATCP 93.535 ATCP 93.535 Periodic inspection and repair of lined tanks.

ATCP 93.535(1) (1) 

ATCP 93.535(1)(a) (a) The owner of a lined tank shall obtain an internal inspection of the tank lining within 5 years after the date of initial tank lining, or repair to a previously installed tank lining, and at least every 5 years thereafter.

ATCP 93.535(1)(b) (b) This section applies whether or not cathodic protection has been added to the tank system.

ATCP 93.535(2) (2) Any complete or partial tank lining conducted any time after the original tank lining was installed is considered a repair of the lining.

ATCP 93.535(3) (3) The owner shall notify the authorized agent and the department in writing at least 5 business days before having the inspection performed.

ATCP 93.535(3m) (3m) Before commencing any inspection, the underground tank system liner shall ensure that the tank is prepared for inspection in accordance with API 1631.

ATCP 93.535(4) (4) Tank lining inspections shall use one of the following methods:

ATCP 93.535(4)(a) (a) Video camera inspection in accordance with KWA Method A only. A pre-inspection tightness test shall be performed in accordance with s. ATCP 93.510 (4); if the tank fails the tightness test, video inspection is not permitted.

ATCP 93.535(4)(b) (b) Physical inspection in accordance with API 1631.

ATCP 93.535(5) (5) Inspection requirements are as follows:

ATCP 93.535(5)(a) (a) For tanks with lining and cathodic protection added at the same time, if cathodic protection has been maintained at a protective level:

ATCP 93.535(5)(a)1. 1. Video inspection as prescribed under sub. (4) (a).

ATCP 93.535(5)(a)2. 2. Physical inspection as prescribed under sub. (4) (b).

ATCP 93.535(5)(b) (b) For tanks with cathodic protection added after the tank was lined:

ATCP 93.535(5)(b)1. 1. For first 5-year inspection following cathodic protection addition with cathodic protection maintained at a protective level, physical inspection is required under sub. (4) (b).

ATCP 93.535(5)(b)2. 2. If first 5-year inspection indicates no change of external wall thickness, then subsequent 5-year inspections can be performed as allowed in sub. (4).

ATCP 93.535(5)(c) (c) For lined tanks without cathodic protection installed, physical inspection is required under sub. (4) (b).

ATCP 93.535(5)(d) (d) The use of the equipment to perform the inspections under par. (a) shall be in accordance with national consensus standards.

ATCP 93.535(5)(e) (e) Inspection and repairs of lined tanks shall be conducted by or under the direct supervision of an underground tank system liner in accordance with s. ATCP 93.240 (1) (b).

ATCP 93.535(5)(f) (f) The person performing the inspection shall be certified by the manufacturer of the inspection equipment.

ATCP 93.535(5)(g) (g) An inspection shall include all interior portions of the tank.

ATCP 93.535(7) (7) Repair of tank linings shall comply with the requirements of API 1631 and the lining manufacturer’s specifications.

ATCP 93.535(7g) (7g) Tanks that have an overall average tank metal thickness or an average tank thickness of a designated thin wall area of less than 75 percent or any through-wall perforations shall be immediately closed per s. ATCP 93.560.

ATCP 93.535(7r) (7r) Tanks that have an overall average tank metal thickness or an average tank thickness of a designated thin wall area of 75 percent to 85 percent shall have an impressed current system installed per s. ATCP 93.520 or be immediately closed per s. ATCP 93.560.

ATCP 93.535(8) (8) A lined tank that requires repairs to more than 10 percent of the lined surface shall be returned to service only if all of the following conditions are met:

ATCP 93.535(8)(a) (a) The tank meets the structural requirements in subs. (7), (7g), and (7r) before the lining repair.

ATCP 93.535(8)(b) (b) The tank has impressed current corrosion protection installed in accordance with s. ATCP 93.520 before being placed back into service.

ATCP 93.535(9) (9) The person performing the inspection shall provide a report to the owner, authorized agent, and the department within 15 days of completing the inspection that describes all of the following items in addition to those required in API 1631:

ATCP 93.535(9)(a) (a) The type of repairs that have been made.

ATCP 93.535(9)(b) (b) The total dimension of the area in square inches that has been repaired by lining.

ATCP 93.535(9)(c) (c) A schematic drawing of the tank showing the area of repairs.

ATCP 93.535(10) (10) Before placing any tank back into service under this section, both of the following shall occur in the following order:

ATCP 93.535(10)(a) (a) An access way for an inspector to enter the tank shall be installed from the tank interior to finished grade, if not already provided.

ATCP 93.535(10)(b) (b) A precision tightness test shall be performed on the tank system in accordance with s. ATCP 93.515 (4). In addition, tightness test shall be performed on the ullage portion of the tank in accordance with s. ATCP 93.515 (10).

ATCP 93.535 History History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19; correction in (4) (intro.) made under s. 35.17, Stats., and correction in (5) (b) 2. made under s. 13.92 (4) (b) 7., Stats., Register October 2019 No. 766.

ATCP 93.545 ATCP 93.545 Seldom-used and temporarily out of service tank systems.

ATCP 93.545(1) (1) Operational requirements. When a storage tank system is placed temporarily out of service, the owner or operator shall comply with all of the following:

ATCP 93.545(1)(a) (a) Notify the department of the registration change in accordance with s. ATCP 93.140 (2) (d).

ATCP 93.545(1)(b) (b) Maintain tank permits in accordance with s. ATCP 93.145.

ATCP 93.545(1)(c) (c) Maintain financial responsibility in accordance with subch. VII.

ATCP 93.545(1)(d) (d) Operation and maintenance of corrosion protection shall be continued.

ATCP 93.545(1)(e) (e)

ATCP 93.545(1)(e)1. 1. The tank, piping, dispensing equipment, lines, pumps, manways, and other ancillary equipment shall be secured to prevent tampering, except as exempted in subd. 2.

ATCP 93.545(1)(e)2. 2. Facilities that are in operation and secured against general public access are not required to have the additional security required in subd. 1. All vent lines shall be left open and functioning.

ATCP 93.545(1)(f) (f) All inspections, maintenance, and periodic testing shall be performed as if the tank were still in service.

ATCP 93.545(1)(g) (g) Requirements for tanks with product:

ATCP 93.545(1)(g)1. 1. Product must be removed from tanks if they have been in TOS status for 12 months.

ATCP 93.545(1)(g)2. 2. Product must be tested and meet ASTM standards prior to bringing the tank back into service.

ATCP 93.545(1)(g)3. 3. Leak detection shall be maintained in accordance with this chapter.

ATCP 93.545(1)(h) (h) Requirements for tanks without product:

ATCP 93.545(1)(h)1. 1. The tank system is empty when all liquid has been removed from the tank and the associated piping so that no more than one inch of residue remains in the system.

ATCP 93.545(1)(h)2. 2. The tank shall be protected against flotation caused by flooding or soil saturation.

ATCP 93.545(1)(j) (j) Single-walled tanks or piping installed more than 30 years ago shall be placed back into service within one year or be permanently closed per s. ATCP 93.560.

ATCP 93.545(2) (2) Placing a tank back into service.

ATCP 93.545(2)(a) (a) Notify the department of the registration change in accordance with s. ATCP 93.140 (2) (d).

ATCP 93.545(2)(b) (b) A precision tightness test shall be performed on the tank and piping in accordance with s. ATCP 93.515 (4) (a) 1. before placing the tank system back into service.

ATCP 93.545(2)(c) (c) Tank systems out of service for more than 365 days shall pass a tightness test of the ullage portion in accordance with s. ATCP 93.515 (10) to assure that tank connections are liquid- and vapor-tight.

ATCP 93.545(2)(d) (d) The tank system shall fully comply with this chapter before being placed back into service, except double-wall construction is not newly required for underground tank systems installed before February 1, 2009.

ATCP 93.545(2)(e) (e) Tank systems covered in par. (a) shall immediately have the leak detection system verified in accordance with s. ATCP 93.510 (2).

ATCP 93.545(2)(f) (f) Tanks covered in par. (b) shall have all the respective components documented as functional on form TR-WM-139 and on forms TR-WM-123 and TR-WM-125, if applicable, before being placed back in service.

ATCP 93.545(2)(g) (g) Product stored in tank during the TOS period shall be tested and meet ch. ATCP 94 standards prior to being sold.

ATCP 93.545 Note Note: Form TR-WM-123, Electronic/Mechanical Line Leak Detector Annual Functionality, form TR-WM-125, Line Test Report, and form TR-WM-139, Underground Tank System Functionality Verification, are available from the Bureau of Weights and Measures, PO Box 8911, Madison, WI 53708-8911, or at telephone [phone], or from the Bureau’s Web site at https://datcp.wi.gov/Pages/Programs_Services/PetroleumHazStorageTanks.aspx. See s. ATCP 93.165 for use of alternate forms approved by the department.

ATCP 93.545(3) (3) Non-complying tank systems. Tank systems that do not comply with this section or in-use tank system requirements are abandoned tanks and shall be closed in accordance with s. ATCP 93.560 within 60 calendar days of non-compliance.

ATCP 93.545 History History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19; correction in (1) (c), (g) 1. made under s. 35.17, Stats., Register October 2019 No. 766.

ATCP 93.550 ATCP 93.550 Change in service to store a non-regulated or a regulated substance.

ATCP 93.550(1) (1) When a tank system that held a regulated substance undergoes a change in service to store a non-regulated substance, the owner or operator shall comply with all of the following requirements:

ATCP 93.550(1)(a) (a) At least 5 business days before beginning a change in service, the owner or operator shall notify the authorized agent or the department of the intended change.

ATCP 93.550(1)(b) (b) Before a change in service, the owner or operator shall have the tank emptied and cleaned, by removing all liquid and accumulated sludge in accordance with the procedures specified in API 2015.

ATCP 93.550(1)(c) (c) A tank system integrity assessment, and, if necessary, a tank system site assessment shall be performed for the tank system in accordance with ss. ATCP 93.575 to 93.585 after notifying the authorized agent or the department but before completing the change in service.

ATCP 93.550(1)(d) (d) Cleaning of tanks and tank system site assessments shall be performed by persons certified in accordance with s. ATCP 93.240 (14) to (21).

ATCP 93.550(1)(e) (e) The owner shall have a revised tank registration, form TR-WM-137, and part A of the department’s tank system service and closure assessment report, form TR-WM-140, completed and submitted to the department within 21 business days of changing a tank system to storage of a non-regulated substance.