Tanks are ubiquitous and essential in industrial societies. They store hydrocarbons, industrial goods such as sulfuric acid, agricultural products, and other products including waste. When they fail, the consequences can be dire if products/volumes they store are explosive and/or toxic. The sulfuric acid storage tank failure in 2001 in Delaware City[1] make the need for inspections clear-one person was killed, eight others were injured, and significant damage ensued to aquatic life. For tanks to perform properly, design and service knowledge, along with a great deal of know-how, are needed. Some examples of the know-how needed and the lessons learned while investigating tanks are presented in this article. Though the damage and failures discussed here have had less impact, they underline that a great deal of practical knowledge and attention to detail are needed to operate tanks reliably. The tank tales presented are: 1. Roof challenges. 2. Welding the drain nozzle in large steel tanks. 3. Concentrated sulfuric acid tanks require internal inspections. 4. Corrosion Under Insulation (CUI) of Tanks. 5. Cleanliness is next to godliness when repairing tank bottoms. 6. Non-intrusive Non-Destructive Tests.
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