§63.902. Standards—Tank fixed roof. — Inbound Citations

(c) If you use Tank Level 1 controls, you must install and operate a fixed roof according to the requirements in § 63.902, with the exceptions specified in paragraphs (c)(1) and (2) of this section. As an alternative to using this fixed roof, you may choose to use one of Tank Level 2 controls in paragraph (d) of this section.

(1) Where § 63.902(c)(2) provides an exception for a spring-loaded pressure-vacuum relief valve, conservation vent, or similar type of pressure relief device which vents to the atmosphere, for any source for the purposes of this subpart, only a conservation vent is eligible for the exception after January 6, 2021. If your initial startup date is after September 3, 2019, the exception for a spring-loaded pressure-vacuum relief valve, conservation vent, or similar type of pressure relief device does not apply, with the exception of a conservation vent, for the purposes of this subpart after July 10, 2020.

(2) The provisions of § 63.902(c)(3) do not apply for the purposes of this subpart if your initial startup date is after September 3, 2019; for any source the provisions of § 63.902(c)(3) do not apply for the purposes of this subpart after January 6, 2021.

(3) You will operate the fixed roof and closure devices according to the requirements in § 63.902, with the exceptions specified in § 63.7895(c)(1) and (2).

(a) Owners and operators that use a tank equipped with a fixed roof in accordance with the provisions of § 63.902 of this subpart shall meet the following requirements:

(1) The fixed roof and its closure devices shall be visually inspected by the owner or operator to check for defects that could result in air emissions. Defects include, but are not limited to, visible cracks, holes, or gaps in the roof sections or between the roof and the tank wall; broken, cracked, or otherwise damaged seals or gaskets on closure devices; and broken or missing hatches, access covers, caps, or other closure devices.

(2) The owner or operator must perform an initial inspection following installation of the fixed roof. Thereafter, the owner or operator must perform the inspections at least once every calendar year except as provided for in paragraph (d) of this section.

(3) In the event that a defect is detected, the owner or operator shall repair the defect in accordance with the requirements of paragraph (b) of this section.

(4) The owner or operator shall maintain a record of the inspection in accordance with the requirements specified in § 63.907 (a) of this subpart.

(1) Approval of alternatives to the requirements in §§ 63.900 and 63.902.

(1) Each tank using Tank Level 1 controls is equipped with a fixed roof and closure devices according to the requirements in § 63.902(b) and (c), with the exceptions specified in § 63.7895(c)(1) and (2), and you have records documenting the design.

(1) Each tank using Tank Level 1 controls is equipped with a fixed roof and closure devices according to the requirements in § 63.902(b) and (c), with the exceptions specified in § 63.7895(c)(1) and (2), and you have records documenting the design.

(1) Operating and maintaining the fixed roof and closure devices according to the requirements in § 63.902(c), with the exceptions specified in § 63.7895(c)(1) and (2).

(i) The owner or operator controls air emissions from the tank in accordance with the provisions specified in subpart OO of this part—National Emission Standards for Tanks—Level 1, except that § 63.902(c)(2) and (3) shall not apply for the purposes of this subpart.

(1) Where § 63.902(c)(2) provides an exception for a spring-loaded pressure-vacuum relief valve, conservation vent, or similar type of pressure relief device which vents to the atmosphere, for any source for the purposes of this subpart, only a conservation vent is eligible for the exception after January 6, 2021. If your initial startup date is after September 3, 2019, the exception for a spring-loaded pressure-vacuum relief valve, conservation vent, or similar type of pressure relief device does not apply, with the exception of a conservation vent, for the purposes of this subpart after July 10, 2020.

(i) The owner or operator controls air emissions from the tank in accordance with the provisions specified in subpart OO of this part—National Emission Standards for Tanks—Level 1, except that § 63.902(c)(2) and (3) shall not apply for the purposes of this subpart.

(2) The provisions of § 63.902(c)(3) do not apply for the purposes of this subpart if your initial startup date is after September 3, 2019; for any source the provisions of § 63.902(c)(3) do not apply for the purposes of this subpart after January 6, 2021.