D.C. Mun. Regs. tit. 20, r. 20-5901

Current through Register 71, No. 45, November 7, 2024

Rule 20-5901 - TANK CORROSION PROTECTION

5901.1

Each owner or operator of a steel tank UST, or of a steel- fiberglass-reinforced plastic composite UST with corrosion protection, shall comply with the requirements of this section for as long as the UST is used to store regulated substances.

5901.2

Each owner or operator shall operate and maintain the corrosion protection system to continuously provide corrosion protection to the metal components of those portions of the tank and piping system of active and temporarily closed USTs that routinely contain regulated substances and are in contact with the ground.

5901.3

Within six (6) months of installation, and at least once every three (3) years thereafter, each UST equipped with a cathodic protection system shall be inspected by a cathodic protection tester to ensure the system is operating properly.

5901.4

Cathodic protection testing shall be done in accordance with one of the following codes of practice, or an alternative industry standard or code of practice approved by the Department in accordance with § 5506:

(a) NACE International Test Method TM0101, "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."

5901.5

Each UST with an impressed current cathodic protection system shall be inspected every sixty (60) days to ensure the system is operating properly.

5901.6

For each UST using cathodic protection, the owner or operator shall maintain records of the operation of the cathodic protection system in accordance with § 5602, including:

(a) The results of the last two (2) inspections required in § 5901.3;

(b) The results of the last three (3) inspections required in § 5901.5; and

(c) The name and qualifications of the cathodic protection tester who performed the inspections.

5901.7

Each owner or operator of an UST that uses internal lining as the sole method of corrosion protection shall conduct annual inspections in accordance with § 5801.5.

5901.8

USTs that fail the annual inspection required by § 5901.7 and cannot be repaired in accordance with § 5801.6 shall be permanently closed in accordance with § 6101.

5901.9

For purposes of this section, the term "cathodic protection tester" means a person who can demonstrate an understanding of the principles and measurements of all common types of cathodic protection systems as applied to buried or submerged metal piping and tank systems. At a minimum, a cathodic protection tester has education and experience in soil resistivity, stray current, structure-to-soil potential, and component electrical isolation measurements of buried metal piping and tank systems.

D.C. Mun. Regs. tit. 20, r. 20-5901

Final Rulemaking published at 40 DCR 7835, 7863 (November 12, 1993); as amended by Final Rulemaking published at 46 DCR 7699 (October 1, 1999); amended by Final Rulemaking published at 67 DCR 1778 (2/21/2020)