METHOD FOR PREVENTING TANK CORROSION AT TANK PRESSURE RESISTANCE TESTING
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United States of America Patent
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Issued Date -
Jan 4, 2018
app pub date -
Oct 26, 2015
filing date -
Feb 17, 2015
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Abstract
An inner surface of a tank 10 is formed by joining a large number of metal plates 21, 23 and 25 to one another by welding. Before injecting pressure resistance testing water into an inside of the tank 10 in order to test pressure resistance of the tank 10, a corrosion inhibitor 31 is applied to welds 27 between the metal plates 21, 23 and 25 on a bottom part of the tank 10. A total bottom part area A1 of the welds 27 to be applied with the corrosion inhibitor 31 on the bottom part of the tank 10 is made wider than a total non-bottom-part area A2 of the welds to be applied with the corrosion inhibitor 31 on the inner surface of the tank 10 other than the bottom part of the tank 10.
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