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API RP 651 - Cathodic Protection of Aboveground Petroleum Storage Tanks

API RP 651, Cathodic Protection of Aboveground Petroleum Storage Tanks, is a recommended practice developed by the American Petroleum Institute (API) covering procedures and practices for achieving effective corrosion control on aboveground storage tank bottoms through the use of cathodic protection. This RP contains provisions for the application of cathodic protection to existing and new aboveground storage tanks. Corrosion control methods based on chemical control of the environment or the use of protective coatings are not covered in detail.

When cathodic protection is used for aboveground storage tank applications, it is the intent of this RP to provide information and guidance specific to aboveground metallic storage tanks in hydrocarbon service. Certain practices recommended herein may also be applicable to tanks in other services. It is intended to serve only as a guide to persons interested in cathodic protection. Specific cathodic protection designs are not provided. Such designs should be developed by a person thoroughly familiar with cathodic protection practices for aboveground petroleum storage tanks.

This RP does not designate specific practices for every situation because the varied conditions in which tank bottoms are installed preclude standardization of cathodic protection practices.

Related Topics

API 510 - Pressure Vessel Inspection Code API 530 - Calculation of Heater Tube Thickness in Petroleum Refineries API 653 - Tank Inspection, Repair, Alteration, and Reconstruction API 936 - Refractory Installation Quality Control - Inspection & Testing Monolithic Refractory API Individual Certification Program (ICP) API RP 1169 - Basic Inspection Requirements for New Pipeline Construction API RP 572 - Inspection of Pressure Vessels API RP 573 - Inspection of Fired Boilers and Heaters API RP 574 - Inspection Practices for Piping System Components API RP 575 - Inspection Practices for Atmospheric and Low Pressure Storage Tanks API RP 577 - Welding Processes, Inspection, and Metallurgy API RP 578 - Material Verification for New and Existing Alloy Piping API RP 583 - Corrosion Under Insulation and Fireproofing API RP 584 - Integrity Operating Windows API RP 585 - Pressure Equipment Integrity Incident Investigation API RP 754 - Process Safety Performance Indicators for the Refining and Petrochemical Industries API RP 934 - Materials and Fabrication of Heavy Wall Pressure Vessels for High-temperature, High-pre API RP 970 - Corrosion Control Documents API TES - Tank Entry Supervisor

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