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The failure of tank roof center support column of a free water knockout tank. The center support column had circumferential cross-sectional corrosion damages, one meter from the tank bottom. Cause analysis was carried out to know the mode of failure.
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Soil-side corrosion of the bottom plates of aboveground storage tanks is the main cause of tank failure. A case study is discussed in this paper, in which failures of three storage tanks were investigated. Soil analysis revealed high salt content and low resistivity.
Electrical resistance (ER) corrosion measurement probes, used for internal corrosion monitoring, are now referred to as soil corrosion probes (SCP) when used in soil-side applications.
Practices and procedures for providing cathodic protection to the steel bottoms of on-grade storage tanks that are in contact with the electrolyte. Historical document 1993
DOWNLOADABLE HISTORICAL DOCUMENT. Impressed current cathodic protection to the normally submerged steel surfaces inside water storage tanks. Design and installation of cathodic protection systems and methods to determining effectiveness.
The objective of this section is to identify important factors influencing boiler feedwater (BFW) deaerator cracking based on literature references and case history analyses. Historical Document 1991
Application of CP to control external corrosion of carbon steel on-grade storage tank bottoms that are in contact with an electrolyte. Both galvanic anode CP systems and impressed current CP systems.
HISTORICAL DOCUMENT. Galvanic anode cathodic protection (CP) for submerged steel surfaces in water supply and fire protection storage tanks. Design and installation of CP systems. Effectiveness evaluation, operation, maintenance.
Impressed current cathodic protection to the normally submerged steel surfaces inside water storage tanks. Design and installation of cathodic protection systems and methods for determining their effectiveness.