Code of Federal Regulations Title 40. Protection of Environment § 40.280.31 Operation and maintenance of corrosion protection

(a) All corrosion protection systems must be operated and maintained to continuously provide corrosion protection to the metal components of that portion of the tank and piping that routinely contain regulated substances and are in contact with the ground.

(b) All UST systems equipped with cathodic protection systems must be inspected for proper operation by a qualified cathodic protection tester in accordance with the following requirements:

Note to paragraph (b). The following codes of practice may be used to comply with paragraph (b) of this section:

(A) NACE International Test Method TM 0101, “Measurement Techniques Related to Criteria for Cathodic Protection of Underground Storage Tank Systems”;

(B) NACE International Test Method TM0497, “Measurement Techniques Related to Criteria for Cathodic Protection on Underground or Submerged Metallic Piping Systems”;

(C) Steel Tank Institute Recommended Practice R051, “Cathodic Protection Testing Procedures for STI–P3® USTs”;

(D) NACE International Standard Practice SP 0285, “External Control of Underground Storage Tank Systems by Cathodic Protection”;  or

(E) NACE International Standard Practice SP 0169, “Control of External Corrosion on Underground or Submerged Metallic Piping Systems”.

(c) UST systems with impressed current cathodic protection systems must also be inspected every 60 days to ensure the equipment is running properly.

(d) For UST systems using cathodic protection, records of the operation of the cathodic protection must be maintained (in accordance with § 280.34) to demonstrate compliance with the performance standards in this section. These records must provide the following: