1 www.flyability.com AUGUST 2016 CUSTOMER NEED Every 3 - 15 years, depending on the substance they have contained, TAU AG performs a thorough inspection of each storage tank. After having been properly cleaned, a tank is inspected following a procedure which includes the visual inspection of fire protection piping, overfill protection, gaging system, roof pre-determined points as well as a general visual inspection of the roof. At 25 meters a

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