Ill. Admin. Code tit. 35, § 724.291 - Assessment of Existing Tank System Integrity
a) For each existing tank system that does
not have secondary containment meeting the requirements of Section
724.293,
the owner or operator must determine either that the tank system is not leaking
or that it is fit for use. Except as provided in subsection (c), the owner or
operator must obtain and keep on file at the facility a written assessment
reviewed and certified by a qualified Professional Engineer, in accordance with
35 Ill. Adm. Code
702.126(d),
that attests to the tank system's integrity.
b) This assessment must determine whether 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 must consider the
following:
1) Design standards, if available,
according to which the tank and ancillary equipment were constructed;
2) Hazardous characteristics of the wastes
that have been and will be handled;
3) Existing corrosion protection
measures;
4) Documented age of the
tank system, if available (otherwise an estimate of the age); and
5) Results of a leak test, internal
inspection, or other tank integrity examination so that the following is true:
A) For non-enterable underground tanks, the
assessment must include 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, and
B) For
other than non-enterable underground tanks and for ancillary equipment, this
assessment must include either a leak test, as described above, or other
integrity examination that is certified by a qualified Professional Engineer,
in accordance with 35 Ill. Adm. Code
702.126(d),
that address cracks, leaks, corrosion, and erosion.
BOARD NOTE: The practices described in the American Petroleum Institute (API) Publication, "Guide for Inspection of Refinery Equipment", Chapter XIII, "Atmospheric and Low-Pressure Storage Tanks", incorporated by reference in 35 Ill. Adm. Code 720.111(a), may be used, where applicable, as guidelines in conducting other than a leak test.
c) Tank systems that store or treat materials
that become hazardous wastes, must conduct this assessment within 12 months
after the date that the waste becomes a hazardous waste.
d) If, as a result of the assessment
conducted in accordance with subsection (a), a tank system is found to be
leaking or unfit for use, the owner or operator must comply with the
requirements of Section
724.296.
Notes
Amended at 32 Ill. Reg. 12365, effective July 14, 2008
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