Section 170.480  Repairs Allowed

Owners and operators of UST systems shall ensure that repairs will prevent releases due to structural failure or corrosion as long as the UST system is used to store regulated substances.  Any hole or penetration made into a tank such as is required for new bung openings or any entrance way established for interior lining inspection or repair shall be installed and closed as per this Section.  The repairs must meet the following requirements:

a)         Repairs to UST systems shall be properly conducted in accordance with a code of practice developed by a nationally recognized association or an independent testing laboratory.  (The following codes and standards, incorporated by reference in Section 170.410, may be used to comply with this subsection:  NFPA 30; API Publication 2200; API Recommended Practice 1631; or NLPA Standard 631.)

b)         Repairs to fiberglass-reinforced plastic tanks shall be made by the manufacturer's authorized representative or a representative of any fiberglass tank manufacturer in accordance with NLPA 631, incorporated by reference in 170.410.

c)         Metal pipe sections and fittings that have released product as a result of corrosion or other damage shall be replaced.  Fiberglass pipes and fittings may be repaired in accordance with the manufacturer's specifications.

d)         Repaired tanks and piping shall be tightness tested in accordance with Sections 170.530(c) and 170.540(b) within 30 days following the date of the completion of the repair except as provided in subsection (d)(1) through (3) of this Section .

1)         The repaired tank is internally inspected in accordance with Section 170.430;

2)         The repaired portion of the UST system is monitored monthly for releases in accordance with a method specified in Section 170.530(d) through (h); or

3)         Another test method is used that is determined by the Office of the State Fire Marshal to be not less protective of human health and the environment than those listed in subsections (d)(1) and (2) of this Section; before the utilization of any such method, it shall be submitted to the Office in writing, and the Office shall issue written approval.

e)         Frequency.  All cathodic protection systems shall be re-tested no less than 24 weeks and no more than 28 weeks from the date of installation or repairs.  All sacrificial anode systems shall be tested every 3 years by a certified ICC tester or OSFM approved tester.In the event that a reading of -875 millivolts or less is recorded with testing being conducted above the structure, on any type of corrosion protection system, then yearly testing will be required thereafter.  In the event that upgrading of the cathodic protection system results in readings greater than -875 millivolts with readings being conducted above the structure, then testing may be conducted every 3 years, unless the 6 month test after upgrading produces a reading of -875 millivolts or less, then yearly testing will be required thereafter.

f)          UST system owners or operators shall maintain records of each repair for the remaining operating life of the UST system that demonstrate compliance with the requirements of this Section.  The last 3 years of records shall be retained on site.

g)         All materials used to make necessary repairs shall comply with Section 170.420.

h)         When a tank is determined to be leaking, it can be permanently abandoned-in-place (subject to Section 170.670), removed (subject to Section 170.670), replaced (subject to Section 170.420) or repaired (subject to this Section).

i)          Removal or abandonment-in-place of a leaking tank shall be in compliance with Section 170.670. Leaking piping shall be removed or abandoned-in-place in compliance with Section 170.670.

j)          Storage tanks may be lined, provided that:

1)         Such repair and the proposed materials are compatible with the product to be stored in such repaired tank.

2)         The manufacturers of materials used to line or repair leaking tanks for the storage of petroleum or hazardous substances shall register with the Office of the State Fire Marshal.  The manufacturers shall provide and maintain a current annual list of installers of their particular methods and materials for lining and repairing tanks.  Such lists shall only contain the names of installers who are certified by the respective manufacturers.  This manufacturer's registration shall include the submission of evidence for materials and tank specifications as indicated in NLPA Standard 631, incorporated by reference in Section 170.410.

(Source:  Amended at 27 Ill. Reg. 8164, effective May 1, 2003)