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Products tagged with 'soil-side corrosion'

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Picture for 51318-11218-A Case Study of Soil-Side Corrosion of Aboveground Storage Tanks in the Middle East
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51318-11218-A Case Study of Soil-Side Corrosion of Aboveground Storage Tanks in the Middle East

Product Number: 51318-11218-SG
Author: Hanan Farhat
Publication Date: 2018
$20.00

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.
Picture for Successful Implementation of a Corrosion Management Strategy by Online Injection of Vapor Phase Corrosion Inhibitors to Extend Storage Tank Floor Life
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51318-11428-Successful Implementation of a Corrosion Management Strategy by Online Injection of Vapor Phase Corrosion Inhibitors to Extend Storage Tank Floor Life

Product Number: 51318-11428-SG
Author: Asad Al Ghafri / Jayant R Nair / Naif Al Abri / Latifa Al Shibli
Publication Date: 2018
$20.00

Oil storage tanks experienced accelerated corrosion from the soil side. The short term strategy adopted was to drill under the tanks and inject vapor phase corrosion inhibitors to extend the tank floor life in a risk-rated phased effort for the 48 tanks.
Picture for Determining Migration of Vapor Corrosion Inhibitions Within Sandpad
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Determining Migration of Vapor Corrosion Inhibitions Within Sandpad

Product Number: 51323-19365-SG
Author: Pavan K. Shukla, Roderick E. Fuentes, Andrew Nordquist, Bruce J. Wiersma, Laurie Perry
Publication Date: 2023
$20.00

Soil-side corrosion of the bottom plates of aboveground storage tanks is one of the main reasons for the tank bottom failures. Literature data and experimental work have shown that soil-side corrosion rates could reach as high as 50-100 mpy, indicating that soil-side corrosion could cause the tank-bottom failure in relative short periods, i.e., less than five years after initial installation or repairs. In addition, a recent study has shown that cathodic protection (CP) systems’ effectiveness could be questionable in up to 40 percent of the tanks.
Picture for Effectiveness of Vapor Corrosion Inhibitors under Elevated Chloride Conditions for Aboveground Storage Tank Application
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Effectiveness of Vapor Corrosion Inhibitors under Elevated Chloride Conditions for Aboveground Storage Tank Application

Product Number: 51324-20791-SG
Author: Pavan K. Shukla; Roderick E. Fuentes; Andrew Nordquist; Bruce J. Wiersma; Ingrid Pederson
Publication Date: 2024
$40.00
The sand quality used to construct the tank pad is an important contributing factor to the rate of corrosion that occurs on the soil-side of the aboveground storage tanks (ASTs) floor plates. Clean sand that meets specific criteria provides the first line of defense for mitigation of tank floor corrosion. However, it has been observed that the sand quality used for some existing tanks differ greatly from the specifications provided in the API 651 standard; this could be partially due to initial sand quality not meeting the specification, and partially due to the environmental effects over time. For example, rain-water intrusion could lead to higher than the specified contents of corrosive species such as chloride. Tank operators are increasingly using vapor corrosion inhibitors (VCIs) either as a stand alone or in combination with cathodic protection (CP) for ASTs to mitigate soil-side corrosion. VCIs are delivered either through-the-floor or injected through the ports in the ring wall. Experimental studies were conducted to evaluate VCIs’ performance at elevated chloride concentrations and to study the effectiveness of the delivery methods under extreme chloride conditions. The experimental work found that VCI performance is robust and not compromised due to high chloride levels, such as 300 ppm or more. The work also showed that the through-the-floor VCI delivery method is more beneficial compared to the through-the-sand-pad method when tank pad corrosivity is elevated.
Picture for Premature Failure of API 650 Oil Storage Tank Bottom Plates Due to Soil Side Corrosion
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Premature Failure of API 650 Oil Storage Tank Bottom Plates Due to Soil Side Corrosion

Product Number: 51317--9025-SG
ISBN: 9025 2017 CP
Author: Naif Abri
Publication Date: 2017
$20.00

The above ground storage tanks in the refinery are experiencing bottom plate underside (soil) corrosion at a high rate of 1mm/year. Results: Failure of 4 tanks within a period of 9 years. Observations, details of the CP survey, tests, results and forward path taken up.

 
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