NACE RP0193

Abstract

It is extremely important to maintain the integrity of on-grade carbon steel storage tanks for both economic and environmental reasons. The proper design, installation, and maintenance of cathodic protection (CP) systems can help maintain the integrity and increase the useful service life of on-grade carbon steel storage tanks. <br>The purpose of this standard recommended practice is to outline practices and procedures for providing cathodic protection to the soil side of bottoms of on-grade carbon steel storage tanks that are in contact with an electrolyte. Recommendations for both galvanic anode systems and impressed current systems are included. Design criteria for the upgrade of existing tanks as well as for newly constructed tanks are included. This standard is intended for use by personnel planning to install new on-grade carbon steel storage tanks, upgrade cathodic protection on existing storage tanks, or install new cathodic protection on existing storage tanks. <br>This NACE standard was originally prepared by Task Group T-10A-20, a component of NACE Unit Committee T-10A on Cathodic Protection, in 1993. It was technically revised by Task Group 013 in 2001. Task Group 013 is administered by Specific Technology Group (STG) 35 on Pipelines, Tanks, and Well Casings and sponsored by STGs 03 on Protective Coatings and Linings - Immersion/Buried and STG 05 on Cathodic/Anodic Protection. This standard is issued by NACE International under the auspices of STG 35 on Pipelines, Tanks, and Well Casings.