40 CFR Table 3
Summary of Control Requirements for Storage Vessels at New and Existing Sources
June 9, 2020
Open Table
| If the storage vessel capacity (gallons) is . . . | And the vapor pressurea (psia) is . . . |
Then, you must use the following type of storage vessel . . . |
|---|---|---|
| ≥20,000 but <40,000 | ≥4 | Internal floating roof, external floating roof, or fixed roof vented to a closed vent system and control device achieving 95 percent reduction.b |
| ≥40,000 | ≥0.75 | Internal floating roof, external floating roof, or fixed roof vented to a closed vent system and control device achieving 95 percent reduction.b |
| Any capacity. | >11.1 | Pressure vessel.c |
| All other capacity and vapor pressure combinations | Fixed roof.d | |
aMaximum true vapor pressure of total HAP at storage temperature.
bIf using a fixed roof storage vessel vented to a closed vent system and control device, you must meet the requirements in §63.11910(a) for fixed roof storage vessels. If using an internal floating roof storage vessel or external floating roof storage vessels, you must meet the requirements in §63.11910(b) for internal floating roof storage vessels or external floating roof storage vessels, as applicable.
cMeeting the requirements of §63.11910(c) for pressure vessels.
dMeeting the requirements in §63.11910(a) for fixed roof storage vessels.
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