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LDEQ Accident Number Accident Date |
Point Source(s) | Notes | Amount of Release |
92861 2006-12-27 | Unicracker Unit | Cause: Leak on a split tee connection on a stopple on the E-1 Debutanizer Tower reflux line that caused the shutdown of Unicracker Unit Followup: No Notes: Claims emission was below RQ | |
92761 2006-12-19 | B-11 Flare | Cause: loss of a water seal on the blowdown system at the Coker 2 Unit Followup: No Notes: Claims emission was below RQ | |
92251 2006-11-26 | B-5 Flare | Cause: upset of the E1 Tower at the C-Topper Unit Followup: No Notes: Claims emission was below RQ | |
91874 2006-11-05 | Flare - unplanned shutdowns of 3 catalytic cracking units, 2 reformers, 2 hydrotreaters and a fractionation unit, 4 satellite amine contactors | Cause: occurred in the power feeder cable due to upstream electrical equipment malfunction/substation malfunction Followup: Yes Notes: Sulfur Dioxide reported emissions is 34,339 ABOVE PERMITTED LIMIT which is not stated. Claims other emissions are below RQ. Formal Root Cause analysis to be done within 45 days of incide | |
101736 2007-12-16 | B-7 Flare | Cause: see notes Followup: No Notes: High second stage discharge temperature trip of the JC-36 topper tail gas compressor | |
101551 2007-12-07 | B-11 Flare | Cause: SEAL or GASKET - loss of a water seal on the blowdown system at the Coker 2 Unit Followup: No Notes: VERY COMMON INCIDENT: See notes to 07-04399 | |
101229 2007-11-24 | JC-36 Topper Tail Gas Compressor | Cause: flaring sour tail gas during unexpected shut down of JC- Followup: No Notes: CITGO letter states that no RQ's were exceeded | |
101177 2007-11-20 | Cooling Towers 1 and 2 | Cause: tube leak in E-12 overhead condenser, C-175D at the C-4 Recovery Un Followup: No Notes: The backpressure controller set point was changed from 217 to 210 PSIG. The alarm settings will be changed to a lower setting to prevent Operations from running the tower at such an elevated pressure. | 43.0 pounds |
100672 2007-10-31 | A-Topper Unit at the B-7 Flare ; Feed Prep Unit at the B-6 Flare B-6 Flare ; B-1 Furnace | Cause: see not Followup: No Notes: emissions result from flaring of residual materials in preparation for planned turnarounds | |
100672 2007-10-31 | A-Topper Unit at the B-7 Flare ; Feed Prep Unit at the B-6 Flare B-6 Flare ; B-1 Furnace | Cause: see not Followup: No Notes: emissions result from flaring of residual materials in preparation for planned turnarounds | |
98928 2007-08-25 | B-11 Flare | Cause: SEAL or GASKET - loss of a water seal on the blowdown system at the Coker 2 Unit Followup: No Notes: VERY COMMON INCIDENT: See notes to 07-04399 | |
98774 2007-08-17 | Lube Plant Flare | Cause: Vacuum II Un Followup: No Notes: Fire caused by mechanical seal failure at the Lube Plant Flare resulating from shutdown of Vacuum II Unit | |
98659 2007-08-14 | B-11 Flare | Cause: SEAL or GASKET - loss of a water seal on the blowdown system at the Coker 2 Unit Followup: No Notes: VERY COMMON INCIDENT: See notes to 07-04399 | |
98548 2007-08-09 | B-7 Flare ; B-8 Flare | Cause: Followup: No Notes: B-7 flaring stems from shutdown of the JC-51 Compressor at the FCCUs; B-8 flaring stems from upset at C4 Recovery Unit | |
98367 2007-08-03 | B-11 Flare | Cause: SEAL or GASKET - loss of a water seal on the blowdown system at the Coker 2 Unit Followup: No Notes: Same incident cause as 07-04040 of 07/19/2007 and 07-02449 of 5/12/2007 and 07-02284 of 05/05/2007 | |
98028 2007-07-21 | B-5 Flare | Cause: see notes Followup: No Notes: Light hydrocarbon/ water mixture generated at Straight Run Fractionation Unit was steamed out of the B-5 Flare knock-out drum to the flare located at the Mfg. Complex | |
97961 2007-07-19 | B-11 Flare | Cause: SEAL or GASKET - loss of a water seal on the blowdown system at the Coker 2 Unit Followup: No Notes: CITGO reports emissions as below RQ | |
96768 2007-06-04 | B-7 Flare 3(IX)33 ; Sulften absorber vent at Sulfur Recovery Unit 3(XX-H)1 ; TGII Absorber Vent at Sulfur Recovery Unit 3(XX-J)5 ; furnaces and boilers ; sweet crude oil pipeline to Tank 101 | Cause: short duration rain event; swirling winds 60mph+, hail and lightning - see notes - see not Followup: Yes Notes: The storm caused a loss of power at Substation 21 and power blips on lines from Entergy impacting the Sulfur Recovery Plant. CITGO believes water entered the Substation via a the joint b/w the roof and the side wall causing a fused switch failure. Loss of power resulted in higher pressure and increase in liquid levels causing flaring at B-7. Loss of amine flow and hydrogen sulfide absorption generated heavy smoking from some of the boiler stacks and upset the Sulfur Recovery Plant. Operations pnnel inadvertently overloaded the Central Amine Unit causing high SO2 emissions throughout the Refinery. The crude oil leak was caused by internal corrosion. Limited offsite impact from soot from smoking boilers. REMEDIAL ACTIONS --> A Root Cau | |
96739 2007-06-03 | B-7 Flare | Cause: Followup: No Notes: Flaring occurred during shut down of the B-Topper Unit | |
96337 2007-05-17 | B-9 Flare | Cause: No information given Followup: No Notes: Emission through B-9 Flare resulted from depressuring contents of a sour gas line from Coker 2 to the flare. No reason for this depressuring is cited. | |
96170 2007-05-13 | B-5 flare | Cause: depressuring a propane condensate line to the flare from the Oil Movement Area Followup: No Notes: propane transfer line removed for repair causes incident; De-pressuring to on-site refinery flare. Remedial action, if any, unclea | |
96145 2007-05-12 | B-11 Flare | Cause: SEAL or GASKET - loss of a water seal on the blowdown system at the Coker 2 Unit Followup: No Notes: Verbal report states that loop seal had blown but not been reported by prior shift at the time of the seal failure. Relieved pressure on the drum causing it to reseal. | |
95932 2007-05-05 | JC-2 Recycle Compressor | Cause: unexpected trip of the JC-2 Recycle Compressor caused the shutdown of the Unicracker Unit Followup: Yes Notes: Since Unicracker unit was shut down as result of this incident, CITGO will keep case no. open until unit is returned to servic | |
95938 2007-05-05 | B-11 Flare | Cause: SEAL or GASKET - loss of a water seal on the blowdown system at the Coker 2 Unit Followup: No Notes: Conflict between letter and incident report: letter indicates that all emissions were BRQ; report says SO2 was >1000lbs. No offsite protective action despite emission of material offsite. | |
95491 2007-04-19 | B-Topper Unit, B-7 Flare | Cause: Followup: No Notes: | |
94896 2007-03-26 | Coker 1 Unit; F201A Drum; B5 Flare | Cause: Unit upset and the flaring of process gas Followup: No Notes: | |
94517 2007-03-09 | E-10 debutanizer tower | Cause: startup of debutanizer tower in c4 Light Ends Recovery Uni Followup: No Notes: Verbal report indicates that there was a grass fire on the Equistar property across from the BLCOH Control Room. This incident involved three separate flares, lasting a total of 1 h 41 mins. The flares resulted from multiple causes, each of which was related to the malfunction of the E-10 debutanizer tower. The two separate grass fires burned for a total of 2 h 54 m. The letter of 3/16/07 from Citgo states that the emissions limits were not exceeded; however, the DEQ incident report indicates NOxemissions totaled 122 lbs, exceeding the 24 hour limit of 10 lb | 122.0 pounds |
93978 2007-02-15 | B-12 Flare pilot - Unicracker unit | Cause: pump seal fire and flare pilot outage at the Unicracker Unit Followup: No Notes: | |
93789 2007-02-07 | Coker 1 Unit | Cause: Unit upset and the flaring of process gas Followup: No Notes: | |
93277 2007-01-14 | flange on C-4 recovery unit | Cause: flange leak during a blind installation for a planned turnaround of the C-4 Recovery Unit Followup: No Notes: No information given | |
93243 2007-01-12 | B-7 Flare | Cause: shut down for planned turnaround of York System and parts of the C-4 Recovery Uni Followup: No Notes: | |
110403 2008-10-27 | B-5 flare | Cause: routine shutdown of the Coker 1 Uni Followup: No Notes: CITGO letter states that emissions were BRQ. No further information given regarding shutdown | |
109022 2008-09-13 | B-11 Flare, B-12 Flare, Sulften Stack, C-Cat Scrubber, | Cause: Hurricane Ike Followup: Yes Notes: Power Failure causes release of huge amount of S02. Loss of Pecan Grove substation caused the loss of power to equipment in the SRU, Central Amine, cid Plant, Sour Water Stripper, Unicracker, Wastewater Treating and Coker II Units. Combustion efficiencyof 99% was used to calculate S02 emissions - is that an appropriate figure? Follow-up report on 10/27/2008 discusses emissions from B-11 Flare only REMEDIAL ACTIONS - perform feasability study of reliable power supply for acid block ; Install nsary equipment to start up JC-201 Compressor with less than RQ Flare Emissio | |
108247 2008-08-21 | Refinery | Cause: see notes Followup: No Notes: Power Failure | |
107166 2008-07-13 | CVEP Unit | Cause: No information given Followup: No Notes: Fire in the CVEP Unit | |
105367 2008-05-05 | B-5 Flare, B-11 Flare | Cause: see notes Followup: No Notes: Release results from depressuring of a propane line to the flares | |
104545 2008-04-07 | B-7 Flare | Cause: combusting excess treated refinery fuel Followup: No Notes: CITGO letter states that emissions were BRQ | |
103985 2008-03-15 | B-5 Flare | Cause: start up of Coker 1 Un Followup: No Notes: Letter states that emissions did not exceed permitted limits by an RQ amount - does not specify how much was emitted though, or if the amount exceeded the permitted limit | |
103360 2008-02-22 | B-6 Flare | Cause: shutdown of Topper Tail Gas Compressor JC36 for maintenan Followup: No Notes: CITGO letter states that the emissions were BRQ | |
103287 2008-02-21 | B-12 Flare | Cause: loss of JP3 Feed Pump Motor at the Unicracker Unit Followup: No Notes: CITGO letter states that the emissions were BRQ | |
102969 2008-02-10 | B-5 Flare D-SRP, A-SRP, C-SRP B-7 Flare B-9 Flare B-12 Flare B-6 Flare | Cause: power outage Followup: Yes Notes: Partial power outage: Powerhouse System feeder cable 444-PH-FR13004 faulted in a Y-splice in manhole 26. bad cable resulted in loss of interconnection of Powerhouse generators and Entergy utility power. Caused collapse of electric and steam generation systems. Protective relay miscoordination is another cause. Root Cause Failure Analysis submitted 3/25/2008 indicates that startup of three Sulfur Recovery Units results in large emissions of sulfur dioxide. REMEDIAL ACTIONS: Revise Construction Inspen QA/QC procedure for PILC cable/splice installation to include additional clarification of detail; Repair 444-PH-FR13004 ; Perform a complete reevaluation of of protective relay coordination for all breakers assoc'd with Powerhouse main buses; I | |
102967 2008-02-09 | Propane railcar | Cause: pressure safety valve release from a loaded propane railcar and depressuring of contents of car Followup: No Notes: CITGO letter states that the emissions were BRQ | |
102799 2008-02-04 | Sour C3 Mix Pipeline | Cause: leak in the Sour C3 Mix Pipeline and the blowdown of the pipeline to the flare Followup: Yes Notes: According to first letter, RQ for flammable gas likely exceeded and RQ for Sulfur Dioxide possibly exceeded. Follow-up says all was B | |
102040 2008-01-01 | B-7 Flare | Cause: trip of the JC-101 compressor at the C4 Recovery Unit Followup: No Notes: CITGO letter states that the emissions were BRQ | |
120411 2009-12-24 | B-16 flare | Cause: No RQs were exceeded, so no information was given. Followup: No Notes: Flaring of sour gas from the Ultra Low Sulfur Diesel Hydrotreating unit's flare. No RQs were exceeded, so no information was given. | |
120457 2009-12-19 | Acid plant | Cause: Power failure in acid plant area. Followup: No Notes: No RQs were exceeded, so no information was given. | |
119256 2009-11-04 | B-4 Flare | Cause: No RQs were exceeded, so no information was given. Release related to loss of flare flame on the B-4 flare. Followup: No Notes: No RQs were exceeded, so no information was given. | |
112786 2009-02-16 | B-16 flare in Ultra Low Sulfur Diesel Unit B-16 flare at Ultra Low Sulfur Diesel Unit | Cause: Sour Gas flare from the B-16 flare caused by the lifting of a pressure relief valve in the Ultra Low Sulfur Diesel unit at CITGO Lake Charles Manufacturing plant. Followup: Notes: No information given. | |
123188 2010-05-02 | B12 flare | Cause: The JC 1C Compressor over-pressurized causing relief valve to open to B-12 flare. Followup: No Notes: No information given | |
122816 2010-04-15 | no information given | Cause: Power surge tripped equipment in acid plant when Entergy lost a transformer. Followup: No Notes: BRQ. Refinery letter states that no reportable quantities were exceeded. Stabilized plant but still having problems. No additional information given. | |
122547 2010-04-03 | #7 flare #7 | Cause: smoke coming out of flare from unknown source--no more details given--no RQs exceeded Followup: No Notes: no information given | |
122168 2010-03-17 | B-12 flare | Cause: Swapping out compressors, overloaded system, valve released to flare Followup: No Notes: no information given | |
121160 2010-01-30 | FLARE: B12 flare | Cause: unicracker unit shut down--high temperature on a D3 reactor resulted in a 100lb system opening up causing materials to be released to flare
File contains no DEQ report, only refinery letter with no details of incident indicating it is ongoing and under investigation.
Specific calculations promised in follow-up letter to be sent by 2/28/10. Followup: No Notes: air monitoring inside & outside perimeter | |
129671 2011-03-06 | FLARE: B11 and B12 Flare | Cause: FLARE. State police reports states that fill pressure of the flared gas recovery system was exceeded and resulted in flaring from the B11 and B12 flares. No root cause is known. Material went off-site through the flare and then air. Followup: No Notes: BRQ. No Information Given. Refinery letter and SPOC report only. No LDEQ report. | |
144156 2012-08-07 | B-11 Flare | Cause: The Coker II unit gas compressor (JC-201) shutdown. Shutdown resulted in unit gas relieving to the B-11 flare. Specific cause of shutdown was under investigation until September 21, 2012. Followup: No Notes: Half of Coker II unit was shut down and unit feed rate reduced to minimum rate (feed rate reduced by two thirds). In addition, immediate repair was begun on the JC-201 compressor. Compressor JC-201 was repaired and compressor was restarted. Investigation team was assembled to conduct a root cause investigation of shutdown. Release calculations indicate that reportable quantities of sulfur dioxide and hydrogen sulfide were exceeded during this flaring event. | |
139848 2012-05-21 | Acid Plant | Cause: While neutralizing a tank located in the acid plant, residual nitrosylfuric acid reacted with water and caustic, releasing nitrogen oxides into the ambient air. Nitrosylfuric acid is formed as a result of combustion in the sulfuric acid furnaces and accumulates inside equipment and lines. Followup: Yes Notes: The refinery continued to dilute the contents of the tank with water until the reactions stopped. The water knocked down the gases and kept them in the tank. Material left site (NRC report) |
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