NR 665.0191(2)(2)This assessment shall determine that the tank system is adequately designed and has sufficient structural strength and compatibility with the wastes to be stored or treated to ensure that it will not collapse, rupture or fail. At a minimum, this assessment shall consider all of the following:
NR 665.0191(2)(a)(a) Design standards, if available, according to which the tank and ancillary equipment were constructed.
NR 665.0191(2)(b)(b) Hazardous characteristics of the wastes that have been or will be handled.
NR 665.0191(2)(c)(c) Existing corrosion protection measures.
NR 665.0191(2)(d)(d) Documented age of the tank system, if available, (otherwise, an estimate of the age).
NR 665.0191(2)(e)(e) Results of a leak test, internal inspection or other tank integrity examination such that:
NR 665.0191(2)(e)1.1. For non-enterable underground tanks, this assessment shall consist of a leak test that is capable of taking into account the effects of temperature variations, tank end deflection, vapor pockets and high water table effects.
NR 665.0191(2)(e)2.2. For other than non-enterable underground tanks and for ancillary equipment, this assessment shall be either a leak test, as described in subd. 1., or an internal inspection or other tank integrity examination certified by a qualified professional engineer in accordance with s. NR 670.011 (4) that addresses cracks, leaks, corrosion, and erosion.
NR 665.0191 NoteNote: The practices described in the American Petroleum Institute (API) Publication, Guide for Inspection of Refinery Equipment, Chapter XIII, “Atmospheric and Low-Pressure Storage Tanks”, 4th edition, 1981, may be used, where applicable, as guidelines in conducting the integrity examination of an other than non-enterable underground tank system.
NR 665.0191(3)(3)Tank systems that store or treat materials that become hazardous wastes subsequent to March 1, 1991 shall conduct this assessment within 12 months after the date that the waste becomes a hazardous waste.
NR 665.0191(4)(4)If, as a result of the assessment conducted in accordance with sub. (1), a tank system is found to be leaking or unfit for use, the owner or operator shall comply with the requirements of s. NR 665.0196.
NR 665.0191 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06; CR 16-007: am. (1), (2) (e) 2. Register July 2017 No. 739, eff. 8-1-17.
NR 665.0192NR 665.0192Design and installation of new tank systems or components.
NR 665.0192(1)(1)Owners or operators of new tank systems or components shall ensure that the foundation, structural support, seams, connections and pressure controls (if applicable) are adequately designed and that the tank system has sufficient structural strength, compatibility with the wastes to be stored or treated and corrosion protection so that it will not collapse, rupture or fail. The owner or operator shall obtain a written assessment reviewed and certified by a qualified professional engineer in accordance with s. NR 670.011 (4) attesting that the system has sufficient structural integrity and is acceptable for the storing and treating of hazardous waste. This assessment shall include, at a minimum, all of the following information:
NR 665.0192(1)(a)(a) Design standards according to which the tanks and ancillary equipment are or will be constructed.
NR 665.0192(1)(b)(b) Hazardous characteristics of the wastes to be handled.
NR 665.0192(1)(c)(c) For new tank systems or components in which the external shell of a metal tank or any external metal component of the tank system is or will be in contact with the soil or with water, a determination by a corrosion expert of all of the following:
NR 665.0192(1)(c)1.1. Factors affecting the potential for corrosion, including but not limited to, all of the following:
NR 665.0192(1)(c)1.a.a. Soil moisture content.
NR 665.0192(1)(c)1.b.b. Soil pH.
NR 665.0192(1)(c)1.c.c. Soil sulfides level.
NR 665.0192(1)(c)1.d.d. Soil resistivity.
NR 665.0192(1)(c)1.e.e. Structure to soil potential.
NR 665.0192(1)(c)1.f.f. Influence of nearby underground metal structures (e.g., piping).
NR 665.0192(1)(c)1.g.g. Stray electric current.
NR 665.0192(1)(c)1.h.h. Existing corrosion-protection measures (e.g., coating, cathodic protection).
NR 665.0192(1)(c)2.2. The type and degree of external corrosion protection that are needed to ensure the integrity of the tank system during the use of the tank system or component, consisting of one or more of the following:
NR 665.0192(1)(c)2.a.a. Corrosion-resistant materials of construction such as special alloys or fiberglass-reinforced plastic.
NR 665.0192(1)(c)2.b.b. Corrosion-resistant coating (such as epoxy or fiberglass) with cathodic protection (e.g., impressed current or sacrificial anodes).