Hazardous Air Pollutants
Coke-Oven Pushing, Quenching,
and Battery Stacks
On April 14, 2003, the EPA published a final NESHAP for Coke Oven Pushing, Quenching and Battery Stack operations (68 FR18007]. The regulations apply to sources at Coke Plants that are also Major Hazardous Air Pollutant (HAP) Sources.
Major sources are those that emit 10 tons per year (TPY) of a single HAP or 25 TPY of a combination of HAPS.
The MACT Establishes:
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Emission limitations |
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Work practice standards |
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O&M requirements |
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Initial & continuous compliance requirements |
The compliance dates are:
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Existing sources by April 14, 2006 |
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New sources upon startup |
Pushing:
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Limit: 0.01 gr/dscf for a coke side shed |
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Limit: 0.02 gr/dscf for a moveable hood vented to a control device |
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Limit: 0.03 lb/ton or 0.01 lb/ton for mobile scrubber cars that do not capture during travel for a short or long battery, respectively |
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Limit: 0.04 lb/ton for mobile scrubber car that does capture during travel |
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A Venturi scrubber will require daily average pressure drop and scrubber water flow rate measurements |
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A hot water scrubber will require daily average water pressure and water temperature measurements |
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Each capture system will require daily average fan motor amperage or volumetric flow rate measurements at the inlet to the control device |
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A baghouse will require a bag leak detection system, differential pressure monitoring across each cell daily, and visual inspections weekly and monthly |
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Prepare a plan with procedures for inspections, preventative maintenance, and corrective actions for control device |
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Prepare a written plan to minimize incomplete coking |
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Conduct tests of any control device at least twice every 5 years |
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Include compliance information in Semiannual Report |
Quenching:
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Limit for quench water TDS of 1,100 mg/L or a site specific limit for the sum of benzene, benzo(a)pyrene and naphthalene |
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Must use acceptable quench water |
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Must allow no more than 5% of cross sectional area of tower to be open |
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Must wash baffles once/day (if temp. > 30°F) |
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Must continuously record ambient temperature on days baffles not washed |
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Implement a baffle inspection, repair & replacement program |
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Must conduct testing for TDS or alternative site specific limit |
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Include compliance information in Semiannual Report |
Battery Stacks:
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Install Continuous Opacity Monitoring Systems (COMS) |
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Limit: < 15% for normal coking cycle, daily average |
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Limit < 20% for extended coking cycle, daily average |
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Prepare Quarterly Reports |
Soaking:
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Prepare a Work Practice Plan |
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Train operators to recognize emissions that need corrective action |
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Damper the Oven off the collector Main prior to opening standpipe |
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Take corrective actions for emissions of collector main or notify responsible party if emissions are caused by incomplete coking |
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Include compliance information in Semiannual Report (SA) |
General:
| Sources will be required to prepare written Startup, Shutdown and Malfunction (SSM) Plans |
| Includes procedures for operating and a program of corrective action for malfunctioning process and air pollution control equipment |
| Specific reporting requirements for malfunction events |
| Include compliance information in SA Report |
Authors:
Date: 05/16/03