Method for preventing tank corrosion at tank pressure resistance testing
AssigneeIHI Corporation
InventorTakeshi SAITOU
Life of this patent
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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.
Claims8
A method for preventing tank corrosion at tank pressure resistance testing, the method serving for preventing corrosion of a tank when pressure resistance testing water is injected into the tank to test pressure resistance of the tank against the injected pressure resistance testing water,
- wherein an inner surface of the tank is formed by joining a large number of metal plates by welding, and
- the method comprises:
- applying a corrosion inhibitor to welds between the metal plates on a bottom part of the tank before injecting the pressure resistance testing water into an inside of the tank in order to test pressure resistance of the tank;
- and
- making a total bottom part area of the welds to be applied with the corrosion inhibitor on the bottom part of the tank wider than a total non-bottom-part area of the welds to be applied with the corrosion inhibitor on the inner surface of the tank other than the bottom part of the tank.
Dependencies are inferred from the claim text.