N.M. Admin. Code § 20.5.109.911

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

Section 20.5.109.911 - VENTING FOR ABOVE GROUND STORAGE TANK SYSTEMS

A. Owners and operators shall design and construct venting for all above ground storage tank systems, following 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.

B. Normal atmospheric tank vents shall be located so that the discharge point is outside of buildings and higher than the fill pipe opening. Vent pipes shall be installed not less than 15 feet from power ventilation air intake devices and not less than five feet from a building opening. Vent outlets and devices shall be designed and installed to minimize blockage. Normal vent piping on AST systems installed after the effective date of these regulations shall not be used for any purpose other than venting the tank.

C. Types of vent pipes.

(1) Vent pipes that are provided for normal tank venting shall extend at least 12 feet above ground level.

(2) If attached to a structure, vent pipes shall extend at least five feet above the highest projection of the canopy or roof.

(3) Vent pipes for normal tank venting shall be of appropriate size for the capacity and operating conditions of the tank.

(4) Emergency vents shall be of appropriate size for the capacity of the AST and shall be installed on the primary tank and on the interstice of all double-walled tanks.

D. One of the following shall be used to comply with the requirements of this section:

(1)Petroleum Equipment Institute Publication RP200 "Recommended Practices for Installation of Above Ground Storage Tank Systems for Motor Vehicle Fueling";

(2)National Fire Protection Association Standard 30, "Flammable and Combustible Liquids Code";

(3)Underwriters Laboratories 142, "Steel Aboveground Tanks for Flammable and Combustible Liquids"; or

(4)International Code Council, "International Fire Code".

N.M. Admin. Code § 20.5.109.911

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