Details on Physical Tank Entry and Lining / Integrity Inspection
The inspection process consisted of physical entry into the UST’s and completing the inspection process as required to by Standard API 1631.
The inspector entered the tank and conducted an initial visual inspection of the tank and noted observations. From there, the inspector conducted ultrasonic metal integrity testing to determine metal thickness and potential metal loss of the interior tank material.
The inspector also utilized an “Elcometer 456” film thickness gauge to determine existing lining thickness and conducted numerous thickness tests throughout the tank interior for to determine lining thickness.
This is done to see if the existing lining meets the requirements as outlined in the American Petroleum Institute (API) Standard for “Interior Lining and Periodic Inspection of Underground Storage Tanks”, Section 8.2, paragraph 8.2.4.