Number RP0104-2004 The Use of Coupons for Cathodic Protection Monitoring Applications

Cathodic Protection ANSI APPROVED. Addresses applications for cathodic protection (CP) coupons attached to buried pipelines to determine the level of corrosion protection provided by a CP system. Appendixes cover coupons attached to other structures such as underground storage tanks (USTs), aboveground (on-grade) storage tank bottoms, and steel in reinforced concrete structures. CP coupons may also be used to evaluate compliance with CP criteria, including considering the IR drop. Key words: cathodic protection, coupons, underground storage tanks, aboveground storage tank bottom