Md. Code Regs. 26.10.18.10

Current through Register Vol. 51, No. 22, November 1, 2024

Section 26.10.18.10 - Normal and Emergency Venting

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

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

(a) NFPA 30 "Flammable and Combustible Liquids Code"; and

(b) An API standard applicable to field-erected ASTs incorporated by reference in COMAR 26.10.01.03; and

(2) 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 field-erected AST shall ensure the emergency venting for the field-erected AST meets the following requirements:

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

(a) NFPA 30 "Flammable and Combustible Liquids"; and

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

(2) The field-erected AST has one of the following emergency relief venting designs:

(a) A floating roof;

(b) A lifter roof;

(c) A weak roof-to-shell seam; or

(d) Another industry approved pressure-relieving device.

Md. Code Regs. 26.10.18.10

Regulation .10 adopted effective 49:12 Md. R. 642, eff. 6/13/2022