| Applicability: |
eCFR Subpart UUU  [ecfr.gov]
This subpart applies to:
- Affected sources at petroleum refineries that are Major Sources of HAPs*.
Affected sources:
- Process vents or groups of process vents for any of the following:
- Fluidized catalytic cracking units that are associated with catalyst regeneration;
- Catalytic reforming units that are associated with catalyst regeneration, including vents used during unit depressurization, purging, coke burn, and catalyst rejuvenation;
- Claus or other types of sulfur recovery plant units or the tail gas treatment units serving sulfur recovery plants that are associated with sulfur recovery;
- Bypass lines serving catalytic cracking units, catalytic reforming units, or sulfur recovery units.
*Major Sources of HAPs emit or have the potential to emit:
- ≥ 10 tons/year of any single HAP; or
- ≥ 25 tons/year of total HAPs.
- Area Sources emit less than Major Sources.
Not subject to this subpart:
- Thermal catalytic cracking units;
- Sulfur recovery units that do not recover elemental sulfur, or where the modified reaction is carried out in a water solution that contains a metal ion capable of oxidizing the sulfide ion to sulfur;
- Redundant sulfur recovery units not located at a petroleum refinery that are used by the refinery only for emergency or maintenance backup purposes;
- Equipment associated with bypass lines, such as low leg drains, high point bleed, analyzer vents, open-ended valves or lines, or pressure relief valves needed for safety reasons;
- Gaseous streams routed to a fuel gas system.
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| Rules apply to small, area sources? |
No |
| Known Sources in NDEQ Jurisdiction: |
No
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| Date of Original Final Rule: |
4/11/02 |
| Amendments Dates: |
07/13/2016 - Amendments
12/01/2015 - Final Rule
04/20/2006 - Amendments
02/09/2005 - Amendments |
| State Regulations (Title 129): |
Title 129, Chapter 13, Section 002.53
Previously: Chapter 28, Section 001.54.
Sources are also responsible for ensuring they are in compliance with current federal requirements found for this subpart in the CFR |
| Federal Regulations: |
40 CFR 63.1560 |
| Related Rules: |
Subpart J & Ja – Petroleum Refineries
Subpart GGG & GGGa – Petroleum Refineries (equipment leaks)
Subpart QQQ – Petroleum Refinery Wastewater Systems
NESHAP - 40 CFR Part 63 Subpart CC - Petroleum Refineries |
| Regulations and Federal Registers: |
eCFR Subpart UUU  [ecfr.gov]
(See attached file: 3U - Fed. Reg. 2016-07-13 - Final Rule; Amendments.pdf)
(See attached file: 3U - Fed. Reg. 2015-12-01 - Final Rule.pdf)
(See attached file: 3U - Fed. Reg. 2006-04-20 - Final Rule; Amendments.pdf)
(See attached file: 3U - Fed. Reg. 2005-02-09 - Direct Final Rule; amendments.pdf)
(See attached file: 3U - Fed. Reg. 2002-04-11 - Final Rule.pdf)
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| Forms: |
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| Important Dates: |
Source Classification
- Existing Sources = Commence construction or reconstruction on or before September 11, 1998.
- New Sources = Commence construction or reconstruction after September 11, 1998.
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| FAQs, Fact Sheets, and Rule Summaries: |
Texas CEQ - Rule Flowchart  [tceq.texas.gov]
EPA's Subpart UUU Website  [epa.gov] - contains federal register notices and technical information
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| Presentations, Training and Articles: |
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| Other Information and Resources: |
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| Notes: |
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| Page Last Updated: |
12/16/22 |