North Dakota Administrative Code › Title 33.1 - Department of Environmental Quality › Article 33.1-24 - Hazardous Waste Management › Chapter 33.1-24-08 - Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks › Section 33.1-24-08-23 - Repairs allowed

Current through Supplement No. 393, July, 2024
Owners and operators of underground storage tank systems must
				  ensure that repairs will prevent releases due to structural failure or
				  corrosion as long as the underground storage tank system is used to store
				  regulated substances. The repairs must meet the following requirements:
1. Repairs to underground storage tank
				systems must be properly conducted in accordance with a code of practice
				developed by a nationally recognized association or an independent testing
				laboratory;
NOTE: The following codes of practice may be used to comply
				  with this subsection: National Fire Protection Association Standard 30,
				  "Flammable and Combustible Liquids Code"; American Petroleum Institute
				  Recommended Practice RP 2200, "Repairing Crude Oil, Liquefied Petroleum Gas,
				  and Product Pipelines"; American Petroleum Institute Recommended Practice RP
				  1631, "Recommended Practice for the Interior Lining and Periodic Inspection
				  Underground Storage Tanks"; National Fire Protection Association Standard 326,
				  "Standard for the Safeguarding of Tanks and Containers for Entry, Cleaning, or
				  Repair"; National Leak Prevention Association Standard 631, Chapter A, "Entry,
				  Cleaning, Interior Inspection, Repair, and Lining of Underground Storage
				  Tanks"; Steel Tank Institute Recommended Practice R972, "Recommended Practice
				  for the Addition of Supplemental Anodes to STI-P3® Tanks"; NACE
				  International Standard Practice SP 0285, "External Control of Underground
				  Storage Tank Systems by Cathodic Protection"; or Fiberglass Tank and Pipe
				  Institute Recommended Practice T-95-02, "Remanufacturing of Fiberglass
				  Reinforced Plastic (FRP) Underground Storage Tanks".
2. Repairs to fiberglass-reinforced plastic
				tanks may be made by the manufacturer's authorized representatives or in
				accordance with a code of practice developed by a nationally recognized
				association or an independent testing laboratory;
3. Metal pipe sections and fittings that have
				released product as a result of corrosion or other damage must be replaced.
				Noncorrodible pipes and fittings may be repaired in accordance with the
				manufacturer's specifications;
4.
				Repairs to secondary containment areas of tanks and piping used for
				interstitial monitoring and to containment sumps used for interstitial
				monitoring of piping must have the secondary containment tested for tightness
				according to the manufacturer's instructions, a code of practice developed by a
				nationally recognized association or independent testing laboratory, or
				according to requirements established by the department within thirty days
				following the date of completion of the repair. All other repairs to tanks and
				piping must be tightness tested in accordance with subsection 3 of section
				33.1-24-08-33 and subsection 2
				of section
				33.1-24-08-34 within thirty days
				following the date of the completion of the repair except as provided in
				subdivisions a through c:
a. The repaired
				tank is internally inspected in accordance with a code of practice developed by
				a nationally recognized association or an independent testing
				laboratory;
b. The repaired portion
				of the underground storage tank system is monitored monthly for releases in
				accordance with a method specified in subsections 4 through 9 of section
				33.1-24-08-33; or
c. Another test method is used that is
				determined by the department to be no less protective of human health and the
				environment than those listed above;
NOTE: The following codes of practice may be used to comply
				  with subsection 4 of this subsection: Steel Tank Institute Recommended Practice
				  R012, "Recommended Practice for Interstitial Tightness Testing of Existing
				  Underground Double Wall Steel Tanks"; or Fiberglass Tank and Pipe Institute
				  Protocol, "Field Test Protocol for Testing the Annular Space of Installed
				  Underground Fiberglass Double and Triple-Wall Tanks with Dry Annular Space";
				  Petroleum Equipment Institute Recommended Practice RP1200, "Recommended
				  Practices for the Testing and Verification of Spill, Overfill, Leak Detection
				  and Secondary Containment Equipment at UST Facilities".