Md. Code Regs. 26.10.17.11

Current through Register Vol. 51, No. 12, June 14, 2024

Section 26.10.17.11 - Normal and Emergency Venting

A. An owner, an operator, and a person in charge of an AST system with a shop-fabricated AST shall ensure the normal venting for the shop-fabricated AST meets the following requirements:

(1) Design and construct the normal venting in accordance with one of the following industry standards:

(a) UL 142 "Standard for Safety, Steel Aboveground Tanks for Flammable and Combustible Liquids"; or

(b) API Standard 2000 "Venting Atmospheric and Low-pressure Storage Tanks";

(2) The normal venting requirements for ASTs listed in NFPA 30 "Flammable and Combustible Liquids Code"; and

(3) Vent an atmospheric pressure AST to prevent the development of vacuum or pressure above a 1.0 psi (6.9 kPa) maximum operating pressure.

B. An owner, an operator, and a person in charge of an AST system with a shop-fabricated AST shall ensure the emergency venting for the shop-fabricated AST meets the following requirements:

(1) Design and construct emergency venting in accordance with one of the following industry standards:

(a) UL 142 "Standard for Safety, Steel Aboveground Tanks for Flammable and Combustible Liquids"; or

(b) API Standard 2000 "Venting Atmospheric and Low-pressure Storage Tanks"; and

(2) Emergency venting meets the requirements in NFPA 30 "Flammable and Combustible Liquids Code".

Md. Code Regs. 26.10.17.11

Regulation .11 adopted effective 49:12 Md. R. 642, eff. 6/13/2022