API RP 651-2024
地上石油儲罐陰極保護(hù)推薦實(shí)踐

Cathodic Protection of Aboveground Petroleum Storage Tanks

標(biāo)準(zhǔn)號: API RP 651-2024
發(fā)布: 2024年
總頁數(shù): 60頁
發(fā)布單位: 美國石油學(xué)會
當(dāng)前最新: API RP 651-2024

引用標(biāo)準(zhǔn): ASTM C144 ASTM C778 ASTM D1557 ASTM D512 ASTM D516 ASTM G51

本體: 陰極保護(hù)

適用范圍: The purpose of this RP is to present procedures and practices for achieving effective corrosion control on aboveground storage tank carbon steel bottoms using 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 people 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.

術(shù)語	描述
陽極 anode	The electrode of an electrochemical cell at which oxidation (corrosion) occurs. Antonym: cathode.
陰極 cathode	The electrode of an electrochemical cell at which a reduction reaction occurs. Antonym: anode.
陽極床 anode bed	Consists of one or more anodes installed below the earth’s surface for the purpose of supplying cathodic protection.
回填 backfill	Commercial, uniformly conductive material placed in a hole to fill the space around anodes, vent pipe, and buried components of a cathodic protection system.
底部邊緣突出 bottom edge projection (bottom extension)	The portion of the tank bottom steel plate that extends horizontally past the outside vertical surface of the shell (i.e. the external lip formed at the base of the tank where the bottom steel plate protrudes and is welded to the bottom of the shell, around the entire tank perimeter). Also referred to as bottom extension.