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Petroleum Refinery MACT Standards Revisions Proposed

Posted on 2/9/2016 by Roger Marks

In the Federal Register today, US EPA proposed a new rule to amend Clean Air Act requirements for the petroleum refinery sector.

Specifically, the proposed rule:
  • Revises the National Standards for Hazardous Air Pollutants (NESHAPS) Refinery MACT 1 and MACT 2 regulations; and
  • Makes technical corrections and clarifications to the NESHAPS and New Source Performance Standards (NSPS) for petroleum refineries.  

Originally finalized on December 1, 2015, EPA’s latest NESHAP requirements for the Petroleum Refinery sector—found at 40 CFR 63, Subparts CC and UUU—include the MACT 1 and MACT 2 standards, which establish limitations on hazardous air pollutant (HAP) emissions during startup and shutdown for air pollution sources at petroleum refineries. 

The December rulemaking eliminated an exclusion from the definition of “miscellaneous process vent” and establishes standards for these maintenance vents.

New MACT 1 and MACT 2 Compliance Date

A new compliance date for the MACT 1 and MACT 2 standards has been finalized. For sources constructed or reconstructed on or before June 30, 2014, EPA requires the following:

MACT 1: Follow standards for maintenance vents that apply during startup, shutdown, maintenance, or inspection.

MACT 2: Follow standards that apply during startup, shutdown, or hot standby for fluid catalytic cracking units (FCCU) and startup and shutdown for sulfur recovery units (SRU).

While EPA does not believe this will have a significant effect on refineries, it is possible that some facilities may have to install new controls or invest in capital projects to comply with the revised regulatory provisions.  

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Tags: Act, Air, Clean, EPA, new rules

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