Regulation .11 Normal and Emergency Venting.
Regulation .11 Normal and Emergency Venting.LinkCopy Citation
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”.