Regulation .05 Performance Standards for Piping.
Regulation .05 Performance Standards for Piping.LinkCopy Citation
An owner, an operator, and a person in charge of an AST system with a field-erected AST shall:
A.
If installing or relocating a field-erected AST on or after June 13, 2022, install piping that does not penetrate a secondary containment dike, unless otherwise approved by the Department;
B.
Ensure an existing field-erected AST meets the following requirements:
(1)
For piping connected to an AST penetrating a secondary containment dike:
(a)
Obtain approval of the Department to leave the piping in place; or
(b)
Properly abandon and replace the piping not later than 1 year after June 13, 2022 with piping that does not penetrate the secondary containment dike; and
(2)
For underground piping connected to an AST, ensure the piping complies with the underground piping requirements in §E of this regulation not later than 1 year after June 13, 2022;
C.
Ensure an aboveground piping system connected to a field-erected AST is:
(1)
Constructed of carbon steel, alloy steel, or stainless steel piping;
(2)
Compatible with the type of oil being transferred;
(3)
Designed and constructed in accordance with industry recognized standards;
(4)
Liquid tight;
(5)
Properly supported by permanent bracing to prevent structural weaknesses; and
(6)
Protected against physical damage;
D.
Ensure a piping system installed aboveground or inside of a building is not constructed with:
(1)
Low melting point materials, such as aluminum, copper, or brass;
(2)
Materials that soften on fire exposure, such as plastics; or
(3)
Non-ductile materials, such as cast iron; and
E.
If installing an underground piping system, comply with the following requirements:
(1)
Install the piping system, including containment sumps, in accordance with the performance standards in COMAR 26.10.03.02 and .03A(3);
(2)
Installation of the piping system is performed in the continuous on-site presence and under the direction of a certified UST system technician, as required under COMAR 26.10.02.03D;
(3)
Test the piping system for tightness in accordance with COMAR 26.10.03.05 and 26.10.05.02D;
(4)
Test the containment sumps for tightness in accordance with COMAR 26.10.03.03A(3);
(5)
Provide a method of leak detection in accordance with COMAR 26.10.05.02D;
(6)
Maintain the containment sumps clean and free of liquid; and
(7)
If a test for tightness conducted in accordance with §E(3) or (4) of this regulation results in a failed test result or a leak is found:
(a)
Report the failed test result to the Department within 2 hours in accordance with COMAR 26.10.08.01; and
(b)
Follow the investigation and confirmation procedures in 26.10.08.03, including making repairs and retesting the piping system and containment sumps for tightness.