§ 245.534. Interior linings and coatings.
(a) Coating or lining systems may be used to protect aboveground storage tank interiors from corrosion and deterioration. The coating or lining system shall be designed in accordance with current codes of practice. Coating or lining systems must be bonded firmly to the interior surfaces of the tank.
(b) Specific requirements are as follows:
(1) Coatings and linings shall be chemically compatible with the substance to be stored.
(2) Coating material shall be applied and cured in strict accordance with manufacturer’s specifications.
(3) Surfaces shall be prepared and inspected in accordance with applicable Nationally-recognized codes and standards.
(4) Coatings used to protect the bottom of a tank shall extend up the side of the tank a minimum of 18 inches, while some forms of lining may cover the entire tank interior.
(5) Coatings shall be examined for blisters and air pockets, and tested for pinholes. The coating thickness shall be checked to assure compliance with manufacturer’s specifications.
(6) Defects in coating or lining systems shall be repaired or corrected prior to putting the tank or system into service.
(c) Interior linings or coatings shall be inspected by a third-party, Department-certified, aboveground storage tank inspector at installation, when undergoing a major modification, and at least every 10 years or as warranted or recommended by the manufacturer or design engineer and agreed upon by the Department.
Source The provisions of this § 245.534 amended November 9, 2007, effective November 10, 2007, 37 Pa.B. 5979; amended December 21, 2018, effective December 22, 2018, 48 Pa.B. 7875. Immediately preceding text appears at serial page (384210).
Cross References This section cited in 25 Pa. Code § 78a.57 (relating to control, storage and disposal of production fluids); 25 Pa. Code § 245.521 (relating to performance standards for aboveground storage tanks); 25 Pa. Code § 245.531 (relating to general corrosion and deterioration requirements); 25 Pa. Code § 245.552 (relating to in-service inspections); 25 Pa. Code § 245.553 (relating to out-of-service inspections); and 25 Pa. Code § 245.612 (relating to performance and design standards).
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