Use code FLASH20 at checkout for 20% off all eBooks and eCourses
Sustaining long-term leak-free operation of aboveground storage tank (AST) bottoms is an extremely important goal of all AST owners and operators. Mitigation of corrosion on the external side of on-grade carbon steel tank bottoms is a principal element necessary to achieve this goal.
This standard provides a comprehensive compilation of corrosion mitigation considerations, practices, and procedures for AST bottoms. It is applicable from tank construction through long-term integrity management and maintenance processes. It presents supplements and alternatives to cathodic protection (CP). A broad section on vapor corrosion inhibitor (VCI) practices and procedures for mitigation of external tank bottom corrosion is included.
Or
Keywords: Aboveground storage tanks, ASTs, external side corrosion, tank bottom
Aboveground storage tanks (ASTs) are assets that contain valuable goods for the oil and gas industry. Consequently, monitoring and preventing loss of containment and extending the service life of those assets is a priority for the abovementioned industries. To monitor the degradation process of the tanks, ER probes are typically used to determine the corrosion rates. Corrosion rates can be used to forecast the service life of an asset by estimating the time at which the degradation reaches a critical thickness of the tank. If the corrosion rate is such that the critical thickness is expected to reach below the expected service life of the asset, the lifespan can be extended by corrosion mitigation methods.
We are unable to complete this action. Please try again at a later time.
If this error continues to occur, please contact AMPP Customer Support for assistance.
Use this error code for reference:
Please login to use Standards Credits*
* AMPP Members receive Standards Credits in order to redeem eligible Standards and Reports in the Store
You are not a Member.
AMPP Members enjoy many benefits, including Standards Credits which can be used to redeem eligible Standards and Reports in the Store.
You can visit the Membership Page to learn about the benefits of membership.
You have previously purchased this item.
Go to Downloadable Products in your AMPP Store profile to find this item.
You do not have sufficient Standards Credits to claim this item.
Click on 'ADD TO CART' to purchase this item.
Your Standards Credit(s)
1
Remaining Credits
0
Please review your transaction.
Click on 'REDEEM' to use your Standards Credits to claim this item.
You have successfully redeemed:
Go to Downloadable Products in your AMPP Store Profile to find and download this item.
Vapor corrosion inhibitor (VCI) as an alternative for corrosion control of underside tank bottom. A specified volume of VCI was applied through a leak detector port 24-inch (60.96 cm) from the edge of the tank bottom plate, towards the center. As expected, the initial corrosion rates at the different locations differ and tend to decrease with time.
.
Corrosion of oil storage tanks used to store crude oil and produced water in an operating oil field were identified as a potential safety issue when inspection results indicated significant wall loss due to internal corrosion. Corrosion was noted to be particularly severe in the lower sections of some tanks where sludge layers were believed to have formed. Previous attempts to monitor for corrosion using mass loss coupons and acoustic emission were found to provide less than adequate information regarding corrosion risk. Corrosion monitoring using alternate approaches utilized to provide additional information regarding possible corrosion of the tank at different locations within the tanks.