§ 245.422. Upgrading of existing underground storage tank systems.
(a) Alternatives allowed. By December 22, 1998, existing underground storage tank systems shall comply with one of the following requirements:
(1) Underground storage tank system performance standards under § 245.421(b) (relating to performance standards for underground storage tank systems).
(2) The upgrading requirements in subsections (b)(d).
(3) Closure requirements under § § 245.451245.455 (relating to out-of-service underground storage tank systems and closure), including applicable requirements for corrective action under Subchapter D (relating to corrective action process for owners and operators of storage tanks and storage tank facilities and other responsible parties).
(b) Tank upgrading requirements. Steel tanks shall be upgraded to meet one of the following requirements in accordance with a code of practice developed by a Nationally recognized association or independent testing laboratory:
(1) Interior lining. A tank may only be upgraded by internal lining for corrosion protection prior to November 10, 2007. Existing lined tanks must meet the following conditions:
(i) The lining was installed in accordance with § 245.434 (relating to repairs allowed).
(ii) Within 10 years after lining, and every 5 years thereafter, the lined tank is internally evaluated by, or under the direct onsite supervision of a certified tank liner (TL) or by a professional engineer adhering to the evaluation process developed by a National association (See API 1631 and NLPA 631) and found to be structurally sound with the lining still performing in accordance with original design specifications. The evaluation findings shall be documented on a form approved by the Department and shall be maintained at the facility for the duration of the tanks operating life.
(iii) Lined tank systems that do not meet original design specifications or have not been evaluated as required in subparagraph (ii) shall be emptied, removed from service, and permanently closed in accordance with § § 245.451 and 245.452 (relating to temporary removal from service (out-of-service); and permanent closure and changes-in-service).
(2) Cathodic protection. A tank may be upgraded by cathodic protection if the cathodic protection system meets the requirements in § 245.421(b)(1)(ii)(B)(D) and the integrity of the tank is ensured using one or more of the following methods:
(i) The tank is internally inspected and assessed to ensure that the tank is structurally sound and free of corrosion holes prior to installing the cathodic protection system.
(ii) The tank is installed at a site that is determined by a corrosion expert not to be corrosive enough to cause it to have a release due to corrosion during its operating life. Owners and operators shall maintain records that demonstrate compliance with this requirement for the remaining life of the tank.
(iii) The tank is assessed for corrosion holes by a method that is determined by the Department to prevent releases in a manner that is no less protective of human health and the environment than subparagraph (i).
(3) Internal lining combined with cathodic protection. A tank upgraded prior to November 10, 2007, having both internal lining and cathodic protection must meet the following:
(i) The lining was installed in accordance with the requirements in § 245.434.
(ii) The cathodic protection system meets § 245.421(b)(1)(ii)(B)(D).
(c) Piping upgrading requirements. Metal piping and fittings that routinely contain regulated substances and are in contact with the ground must be one or more of the following:
(1) Replaced with piping meeting the requirements of new piping in § 245.421(b)(2)(i) and (ii).
(2) Cathodically protected in accordance with a code of practice developed by a Nationally recognized association or independent testing laboratory and meets the requirements in § 245.421(b)(2)(ii)(B)(D).
(3) Installed at a site that is determined to not be corrosive enough to cause a release due to corrosion for the remaining operating life of the piping under § 245.421(b)(2)(iii).
(d) Spill and overfill prevention equipment. To prevent spilling and overfilling associated with product transfer to the underground storage tank system, underground storage tank systems must comply with underground storage tank system spill and overfill prevention equipment requirements in § 245.421(b)(3) and (4).
(e) Under-dispenser containment. When an existing dispenser is replaced with another dispenser and equipment at or below the shear valve needed to connect the dispenser to the underground storage tank system is replaced, under-dispenser containment meeting the requirements in § 245.421(b)(4)(ii) is required. This equipment may include check valves, shear valves, vertical risers, flexible connectors or other transitional components. Under-dispenser containment shall also be installed when a major modification as defined in § 245.1 (relating to definitions) is performed at the dispenser area involving excavation beneath the dispenser.
The provisions of this § 245.422 amended November 9, 2007, effective November 10, 2007, 37 Pa.B. 5979; amended December 24, 2009, effective December 26, 2009, 39 Pa.B. 7190; amended December 21, 2018, effective December 22, 2018, 48 Pa.B. 7875. Immediately preceding text appears at serial pages (331068) and (347251) to (347252).
This section cited in 25 Pa. Code § 245.110 (relating to certification of installers); 25 Pa. Code § 245.403 (relating to applicability); 25 Pa. Code § 245.432 (relating to operation and maintenance including corrosion protection); 25 Pa. Code § 245.435 (relating to reporting and recordkeeping); and 25 Pa. Code § 245.451 (relating to temporary removal from service (out-of-service)).
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