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07044 FAILURE OF ABOVE GROUND STORAGE TANKS

Product Number: 51300-07044-SG
ISBN: 07044 2007 CP
Author: Mohammed. Javeed Shaikh and Zain. Khadir Muhideen
Publication Date: 2007
$0.00
$20.00
$20.00
Corrosion is one of the main causes of the failure of the storage tanks. In any plant, a number of tanks are used to store and deliver a variety of liquids and gases. The biggest problem is the corrosion of the bottom plate. The complete network of plant consists of more than 100 tanks. These are used for storing and distributing potable water, petrol, diesel and H.F.O. About 70 numbers of Large Above Ground Storage Tanks (AST) are used for the storage of Heavy Fuel Oil and water. During internal inspection of one of the tanks, bottom plates shown signs of pitting corrosion of varying degrees and roof had numerous holes of varying sizes. But they mainly centered on the locations where roof was touching rafters. Magnetic flux leakage test (MFL) test indicated underside corrosion of bottom plates in number of tanks. The paper presents and discusses the aspects involved with the corrosion of tank roof and the bottom plates. An attempt has been made to discuss the inspection methodology, the causes for corrosion, and methods of repair and refurbishment of the tanks. It also describes the suitable Cathodic Protection system for the underside corrosion protection of tank bottom plates.
Corrosion is one of the main causes of the failure of the storage tanks. In any plant, a number of tanks are used to store and deliver a variety of liquids and gases. The biggest problem is the corrosion of the bottom plate. The complete network of plant consists of more than 100 tanks. These are used for storing and distributing potable water, petrol, diesel and H.F.O. About 70 numbers of Large Above Ground Storage Tanks (AST) are used for the storage of Heavy Fuel Oil and water. During internal inspection of one of the tanks, bottom plates shown signs of pitting corrosion of varying degrees and roof had numerous holes of varying sizes. But they mainly centered on the locations where roof was touching rafters. Magnetic flux leakage test (MFL) test indicated underside corrosion of bottom plates in number of tanks. The paper presents and discusses the aspects involved with the corrosion of tank roof and the bottom plates. An attempt has been made to discuss the inspection methodology, the causes for corrosion, and methods of repair and refurbishment of the tanks. It also describes the suitable Cathodic Protection system for the underside corrosion protection of tank bottom plates.
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