The following instructions are to be followed when this occurs: All steps are to be documented and the documentation is to be kept for the life of the tank. Tank relocation requirements – often aboveground storage tanks are relocated. For procedures on how to check for the presence of water and removal of water, refer to the STI R111, Storage Tank Maintenance/For copies of the RP, and more information, please go to Failure to adhere to these maintenance instructions may void your warranty. Also, bacterial growth, originating from the fuel can cause corrosion of tanks and lines. Water and sediment in fuel can cause plugging of filters. The primary tank shall be inspected monthly for the presence of water at the lowest possible points inside the primary tank. Drain openings are required to be maintained liquid tight. For diked tanks fitted with a drain, drain off water only. Be sure to dispose of hazardous material properly.
For diked tanks, remove any product spills immediately. Should ground conditions change or settlement occur, take the appropriate steps to maintain proper drainage and prevent standing water near or under the tank area. The coating selected should be of industrial quality Proper site preparation and maintenance are vital to ensure drainage of surface water. The coating selected should be suitable for use with the current coating, or the existing coating should be removed. Special consideration should be given to the selected of the paint, surface preparation, and coating application. The frequency of periodic repainting will be based upon environmental factors in the geographic area where the tank is located. It is imperative that the tank exterior is inspected periodically to ensure that the integrity of the coating is maintained. The tank operator should preform periodic walk-around inspections to identify and repair areas of damage to the vessel or the coating itself and check for proper drainage around the tank area.
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