N.M. Admin. Code § 20.5.111.1106

Current through Register Vol. 35, No. 23, December 10, 2024

Section 20.5.111.1106 - REQUIREMENTS FOR AST UNDERGROUND PRESSURIZED PIPING INSTALLED OR MODIFIED ON, OR AFTER JULY 24, 2018

Owners and operators of above ground storage tank systems with underground pressurized piping installed or modified on, or after the effective date of these regulations shall use interstitial monitoring as the method of release detection for the piping. The interstitial monitoring method shall follow the current edition of an industry standard or code of practice developed by a nationally recognized association or independent testing laboratory approved in advance by the department.

A. Owners and operators of AST systems shall:

(1) use automatic line leak detectors (including mechanical or electronic detectors) that alert the operator to the presence of a leak by restricting or shutting off the flow of regulated substances through piping when a leak is detected at three gallons per hour at 10 pounds per square inch line pressure within one hour;

(2) perform an annual test of the operation of the leak detector which includes a simulated leak, is conducted in accordance with the manufacturer's testing protocol, and confirms the automatic line leak detector detects a leak at three gallons per hour at 10 pounds per square inch line pressure within one hour;

(3) use interstitial monitoring that complies with all of the requirements in 20.5.111.1103 NMAC and all of the following:

(a) Sensors shall be installed in all containment sumps associated with the piping, including under-dispenser containment, transition sumps, and submersible turbine pump containment sumps used to monitor the interstice;

(b) Sensors shall:

(i) monitor the interstice;

(ii) monitor all containment sumps associated with the piping;

(iii) sound an alarm and automatically shut off the submersible turbine pump when a regulated substance or water is detected;

(iv) be positioned in the lowest point of the containment sump; and

(v) be tested annually in accordance with Subsection C of 20.5.111.1104 NMAC;

(c) Containment sumps used for interstitial monitoring shall be tested every three years starting three years after the effective date of these regulations. The testing of the containment sumps shall comply with one of the following:

(i) the testing procedures as described in Petroleum Equipment Institute Publication RP 1200, "Recommended Practices for the Testing and Verification of Spill, Overfill, Leak Detection and Secondary Containment Equipment at UST Facilities"; or

(ii) the equipment manufacturer's published testing procedures.

B. Automatic line leak detectors and sensors required in this section that either fail a test or are found to be damaged shall be repaired or replaced, and a line tightness test shall be conducted in accordance with Subparagraph (a) of Paragraph (3) of Subsection A of 20.5.11.1105 NMAC once the repairs or replacements have been completed;

C. Equipment and methods used to monitor the piping shall be appropriate for the type and length of piping.

D. Owners and operators shall use one or more of the following to comply with the requirements of this section:

(1)Petroleum Equipment Institute Publication RP100, "Recommended Practices for Installation of Underground Liquid Storage Systems";

(2)Petroleum Equipment Institute RP200, "Recommended Practices for Installation of Aboveground Storage Systems for Motor Vehicle Fueling";

(3)American Petroleum Institute Publication RP 1615, "Installation of Underground Hazardous Substances or Petroleum Storage Systems";

(4)American Petroleum Institute 570, "Piping Inspection Code: In-Service Inspection, Repair, and Alteration of Piping Systems"; and

(5)American Society of Mechanical Engineering Standard B31.3, "Process Piping".

E. Owners and operators shall maintain all records of release detection and testing in accordance with 20.5.111.1111 NMAC and provide to the department reports for all release detector testing, line tightness testing, containment sump testing, and sensor testing in accordance with 20.5.111.1112 NMAC.

N.M. Admin. Code § 20.5.111.1106

Adopted by New Mexico Register, Volume XXIX, Issue 14, July 24, 2018, eff. 7/24/2018