Regulation .10 Normal and Emergency Venting.
Regulation .10 Normal and Emergency Venting.LinkCopy Citation
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.