COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

2.9.2 Scrapes of Protective Coatings The protective enamel coating of the tank appears in overall fair to good condition with only minor scraping and surface wearing observed. 2.9.3 Corrosion No corrosion was observed at the visible side walls of the tank. Photographs taken of the underside of the tank indicate that there may be some minor corrosion present. As such, Apex recommends monitoring the tank for any spills that may occur from the underside. 2.9.4 Structural Damage or Inadequate Construction or Installation Structural damage or inadequate construction or installation includes items such as cracks, punctures, and damaged fittings. All discrepancies shall be documented and remedied before the tank system is placed into use. No structural damage was observed. All fittings and attached hoses appeared to be in good condition with no damaged or non functional equipment observed. 2.10 Tightness Testing All new tanks and ancillary equipment shall be tested for tightness prior to being placed in use. The results of the test(s) shall be documented in this assessment. Tank system integrity or leak test requirements must be in compliance with all local requirements. Prior to conducting a tank system integrity test or leak test, contact the local agency staff for local requirements. To the best knowledge of the certifying engineer, local agency staff was not contacted for local integrity testing requirements, and no field integrity test was performed at the time of installation. The tank was pressure tested at the factory per UL 142, according to the tank fabricator (Atlantic Fabritech letter of April 18, 2008 attached). Tanknology Inc. located in Lodi, California, conducted an integrity test on the waste oil AST on Friday, June 3, 2011 in accordance with the John Dow Industries recommended testing procedures. The tank was emptied of all residual waste oil prior to commencing the test. The test included pressurizing the AST to 3 pounds per square inch (psi) and brushing a soap solution over all weld seams. The outer wall on the double wall tank was pressurized to 2-3 psi while maintaining 3 psi on the inner tank and brushing a soap solution over all weld seams. Per John Dow recommendations, the outer tank was not pressurized without first pressurizing the inner tank. The outer tank was then depressurized before releasing pressure from the inner Above Ground Storage Tank Professional Engineer Certification Page 6