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We want to install the roof cover on our waste water tanks and off gas treating system to reduce the VOC emission and odours. The diameter of our waste water tanks are from 14 m to 32 m. Since the corrosion consideration and strength of existing steel tanks, vendor suggests us to choice the aluminium dome cover. Would you please advise.
 
Answers
13/03/2010 A: Hubert Mueller, Bayernoil, guhumueller@web.de
The use of aluminium in process units (as insulation cover) and the tankfield is normally not recommended for safety reasons. Aluminium tends to burn at elevated temperatures, that means in any case of an open fire.