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|State Police #||12-07910|
|Pollutant||Duration||Point Source||Greenhouse Gas||Criteria Pollutant||Ozone forming chemical||Amount of Release|
|Sulfur Dioxide||22m||Sulfur Recovery Unit No. 3 (SRU-3) incinerator stack||NO||YES||NO||BRQ|
Accident Classified As: Below Reportable Quantity (BRQ)
On December 17, 2012, Motiva Entersprises, LLC Convent Refinery (Motiva) reported a potential sulfur dioxide (SO2) release which occurred at the facility due to a regulator malfunction while shutting down Sulfur Recovery Unit No. 3 (SRU-3) for maintenance. The malfunction caused the downstream Tail Gas Treatment Unit No. 3 (TGTU-3) to be bypassed resulting in SO2 emissions from the incinerator stack. The material released to the air did go offsite according to the facility's verbal report.
The incident was initially reported as a potential exceedance of the 500-lb Reportable Quantity (RQ) for sulfur dioxide (SO2). However, after further calculation, the total sulfur dioxide emissions from this incident were not above the reportable quantity.