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CITGO Petroleum (1250), Lake Charles

Releases of Hydrogen Sulfide

LDEQ Accident Number
Accident Date
Point Source(s) Notes Amount of Release
84791

2005-12-23
B-7 Flare
B-Topper Unit
Cause: Piping leak at the B-Topper Unit. Due to the temperature of the naphtha steam and the elevation of the line relative to the ground, the leaking material evaporated and did not reach the ground.

Followup: Yes

Notes: Original letter states that the phone call to report this incident occurred on December 24, 2005, while the follow up letter states the incident occurred on December 23, 2005 at 23:45 hours. Claims all pollutants were released as liquids but vaporized before reaching the ground. Heavy naphtha release was below reportable quantities. The pumparound piping from which the leak was coming was shutdown and isolated for repair when the Unit was shutdown. A Failure Analysis was scheduled for this incident. Second attached letter states that upon re-start up of the B-Unit Topper on December 29, H2S and SO2 were possibly released but below reportable quantities
84711

2005-12-20
Sulfuric Acid Plant
Cause: Possible release of H2S and SO2 during a routine startup of the Sulfuric Acid Plant.

Followup: No

Notes: Claims emission was below RQ.
84652

2005-12-17
B-11 FLARE
Cause: Result of a shutdown of the JC-201 Compressor at the Coker II Unit. Root cause was due to an incorrect engineering design flaw in Transformer 444-S49-TRI-A protective relaying scheme. Transformer had been taken out of service to repair a secondary busing oil leak, and during re-energizing of the transformer the malfunction caused a power outage, causing shutdown on several critical pumparound pumps; the resulting loss of heat removal caused the overheated drum F-210 to fill with liquid.

Followup: Yes

Notes: Caused the 4.16kV tie breaker to open when the differential relay operated. A significant contributing cause of the additional flaring after power was restored was the plugging of the case drains on JC 210 compressor. Engineering calculations states that they expected SO2 released to be slightly lower than their original report, under the NRS Consent Decree, and then stating that they calculated 35,458 lbs were released. No information given on amounts of H2S or CO2 released (does not say specifically BRQ, but only SO2 was listed as exceeded permit levels).
83969

2005-11-18
C-FCC Unit
Cause: Release from the C-FCCU; a relief valve lifted, releasing CAT gas, causing H2S and CO2 to be sent to the flare. Related to incidents that occurred as a result of shutdown/startup associated with Hurricane Rita.

Followup: No

Notes: Claims emission was below RQ. The relief valve was blocked, ending the incident on the day of occurrence. Related to incident number 82492.
83653

2005-11-03
B-11 flare
Cause: Release coming from a B-11 on-site flare, routine shutdown of the Unicrackert Unit

Followup:

Notes: Claims emission was below RQ. Handwritten note states 'Update to rits05-3566 T82492'. No official time of when release was stopped, but LDEQ notes that the incident was 'secured' on November 7 at 10:00 AM when the system returned on line.
82874

2005-10-06
FLARE
Cause: Plant startup after Hurricane Rita possible release of H2S and SO2.

Followup: No

Notes: No information given
82492

2005-09-22
A Sulfur recovery Unit; B Sour Water Stripper; Unicracker
A Topper; B Topper; Coker II; C FCCU
B 104 FLARE
B-5 FLARE; B6 FLARE; B7 FLARE
CLAW sewer
Coker I, C Sulfur Recovery Unit; B Sour Water Stripper
E Sulfur Recovery
Multiple Units
Tank 504
Unicracker
Unicracker; C-FCCU
Unicracker; C-FCCU; B-5 FLARE; B6 FLARE; B7 FLARE
Unicracker; D Sulfur Recovery Unit
Cause: Shut down and start up from Hurrican Rita

Followup: Yes

Notes: Summary of releases over 31 days
714.0 pounds
82155

2005-09-13
No Information Given
Cause: First report letter states cause as routine shutdown/startup of the Sulfuric Acid Plant, and that no RQs were exceeded. Second letter for the same incident date claims the release was the result of a small hole found in the shell of the B-502 Reaction Furnace at the D-Sulfur Recovery Unit, and still stating that no RQs were exceeded. Third letter reiterates that it was a routine shutdown, but that RQs may have been exceeded.

Followup: No

Notes: Claims emission was below RQ in first two letters. All different dates for times of phone call notification (September 12, 13, and 14) and all assigned different case numbers.
82129

2005-09-12
B-502 reaction furnace
Cause: Small hole in shell of B-502 Reaction Furnace at D-Sulfur Recovery Unit.

Followup: No

Notes: Claims emission was below RQ, but also unknown rate of release although hole is very small. Will fabricate a pad to weld over leak.
81597

2005-08-23
B-12 FLARE
Cause: Outage of JC-1B recycle Hydrogen Compressor at Unicracker Unit.

Followup: No

Notes: Claims emission was below RQ
81431

2005-08-17
B-7 FLARE
Cause: Unexpected shutdown of JC-36 Compressor at the B-Topper Unit.

Followup: No

Notes: Claims emission was below RQ
81125

2005-08-11
Sulfuric acid Plant
Cause: Routine start up of Sulfuric Acid Plant.

Followup: No

Notes: Claims emission was below RQ
81175

2005-08-10
FLARE - B-12 Unicracker
Cause: Overpressure of the E101 tower and a PSV relieved pressure to the flare - root cause of the upset was an incorrect and unresponsive transmitter on pressure controller

Followup: Yes

Notes: Reduced pressure for the pressure safety valve to reseat. RCFA underway. No offsite impact.
80604

2005-07-25
B-12 Flare
Cause: flaring of excess hydrogen during outage of JC-1B recycl Hydrogen Compressor at Unicracker Unit

Followup: No

Notes: Claims emission was below RQ. Shut unit down and repaired compressor
80676

2005-07-22
Coker Unit #1
Cause: Coker Unit caught fire when resideual product was being put into the drum

Followup: No

Notes: Claims emission was below RQ. The level detectos on the coker drums detected small amount of radiation. Flexible hose rupture on F-201A coke drum silicon injection system.
112.0 pounds
80714

2005-07-22
Sulfuric acid Plant
Cause: routine start up of Sulfuric Acid Plant

Followup: No

Notes: Claims emission was below RQ
80493

2005-07-13
B-7 Flare
Cause: shutdown for planned maintenance of the B-Topper Unit

Followup: No

Notes: Claims emission was below RQ
79736

2005-06-10
Sulfuric acid Plant
Cause: routine start up of Sulfuric Acid Plant

Followup: No

Notes: Claims emission was below RQ
79333

2005-06-01
B-12 FLARE
Cause: the console operator put the F-1 feed drum pressure controller PC-003 in the manual closed position and failed to put it back in automatic

Followup: No

Notes: The Filter Maintenance Inspection Preparation Procedure will be revised to address a standard method for console operators. A Hard alarm will be installed for PSL 009.
79366

2005-05-25
B-12 FLARE
Cause: unexpected short time loss of the Recycle Hydrogen Compressor JC-1B during start up of the Unicracker Unit

Followup: Yes

Notes: Claims emission was below RQ
79154

2005-05-17
B-11 FLARE
Cause: -Flaring of Coker II Fractionator Overhead Gas from upset of E201 Tower

Followup: Yes

Notes: Facility failed to comply with control equipment regualtion - any deveice, operating procedure or abatement scheme used to prevent or reduce air pollution. The valve should not have allowed water to infiltrate the coke drum. Will revise operating procedures, train operators on trouble shooting skills; and install a flow indicato
78602

2005-04-28
B-5 FLARE
Cause: during shutdown for planned turnaround of C-Topper and Straight Run Fractionation Units

Followup: No

Notes: Claims emission was below RQ. State police state that flaring will go on for 24 hours.
77796

2005-03-23
FLARE Vacuum 2 Unit CLAW
Cause:

Followup: No

Notes: Claims emission was below RQ. Flaring of vacuum sump gas. The LC 103 Control Valve caught on fire at the packing. Material going through valve was 325 Oil and was so hot started fire. Went to flare while shutting down.
77213

2005-03-01
B-6 Flare
Cause: debutaizer Tower at the Straight Run Fractionation Unit

Followup: No

Notes: Claims emission was below RQ
77237

2005-02-26
No Information Given
Cause: B Topper upset

Followup: No Information Provided

Notes: CITGO failed to provide a written report. Investigation pending by DEQ letter dated 8/26/06
76889

2005-02-13
No Information
Cause: weather caused pilot light outage on the B4 Girbotol flare

Followup: No Information Provided

Notes: 7 day follow up written response was not submitted DEQ - went for investigation
75706

2005-01-25
B-12 Flare
Cause: Unicracker Unit was shutdown for repairs. Emissions occurred during repeated start up; - failure of seal on JP127 propane transfer pump significantly contributed to SO2 H2S emissions

Followup: No

Notes: Failure of propane transfer pump seal contributed to 12.300 pounds of [email protected] and all of the H2S emissions.Incident recurring since 12/27/04. Performing RCFA to be completed.
133.0 pounds
76431

2005-01-25
B-7 Flare
Cause: unexpected shutdown of JC-2D Wet Gas Compressor at the A Fluid Catalytic Cracking Unit

Followup: No

Notes: Claims emission was below RQ
76257

2005-01-19
B-7 Flare
Cause: unexpected shutdown of JC-2D Wet Gas Compressor at the A Fluid Catalytic Cracking Unit

Followup: No

Notes: Claims emission was below RQ
76256

2005-01-15
B-7 Flare
Cause: flaring of Topper Tail Gas from an eunexpected shutdown of the JC-36 Compressor at the B Topper Unit

Followup: No

Notes: Claims emission was below RQ
76011

2005-01-06
Sulfuric acid Plant
Cause: of sulfuric acid plant

Followup: No

Notes: Claims emission was below RQ
92895

2006-12-27
D-Sulfur Recovery unit
Cause: start up of the D-Sulfur Recovery Unit from a planned turnaround

Followup: No

Notes: Claims emission was below RQ
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
92656

2006-12-14
tail gas vent stack EQT 298 and 3XX-J5
Cause: upset at sulfur recoovery unit

Followup: No

Notes: Had the contractor performing the RATA advised CITGO sooner that the H2S emissions were higher than expected, operational steps could have been taken earlier in the d
159.0 pounds
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
92267

2006-11-24
flare sump on B-11 Flare
Cause: No Information Given

Followup: No

Notes: Claims emission was below RQ
92150

2006-11-17
hole in pipeline
Cause: No Information Given

Followup: No

Notes: Claims emission was below RQ
92010

2006-11-11
API Separator vents at the Wastewater Treatment Plant
Cause: a knockout drum level controller located downstream of the blower used at the API Separator to move vapors to the B-700 Flare was taken out of service for repair

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
06-BB006-941

2006-11-04
No Information Given
Cause: routine startup of Sulfuric Acid plant

Followup: No

Notes: No Information Given
91796

2006-11-01
B-11 Flare
Cause: a malfunction in repair activities caused a momentary voltage dip which resulted in a fail-safe protection shutting down the process units and Coker 1

Followup: No

Notes: Units were shut down
868.0 pounds
90890

2006-09-26
B-11 Flare
Cause: loss of a water seal on the blowdown system at the Coker 2 Unit

Followup: No

Notes: No Information Given
90765

2006-09-21
leaking nipple fitting JC504A Recycle Compressor at the C-Reformer Unit
Cause: The flammable gas was released from a leaking nipple fitting on the discharge of the JC504A recycle Compressor at the C-reformer Unit. The failure mechanism has been reported to be metal fatigue caused by vibration. The source of the vibration is the reciprocating compressor directly upstream of the leak.

Followup: No

Notes: Good engineering practices was followed in setting the inspection frequency of the piping. The fatigue due to vibration is now being studied. The Unit was immediately shutdown to isolate the leak. The failed nipple was replaced and a gusset was installed at the connection.
90424

2006-09-03
B-Catalytic Gasoline Hydrotreater
Cause: JP 204B stripper bottoms pump on the E 201 Interstage Stripper Tower experienced a seal failure. Due to the compostion and operating conditions and location within the unit, the Hydrocarbons released auto-ignite

Followup: No

Notes: No Information Given
88861 & 88862

2006-06-25
CLAW
Cause: level controller malfcuntion st the Lube Vacuum Unit 1

Followup: No

Notes: Claims emission was below RQ
84957

2006-01-04
FLARE - B 12 Flare and Furnace Flange fire at the Unicracker Unit
Cause: caused the shut down of the Unicracker Unit and during restart there were emissions

Followup: No

Notes: Since the reactor section of the Unicracker Unit was shutdown as the result of this incident, will use same case number in any notifications regarding reportable emissions from the restart of the Unicracker Unit. CITGO is evaluating a project to route the non-condensable gas to a compressor on anoher unit for recovery and treatment. If the project is approved,it will be installed at the Unit's next scheduled turnaround.
101791

2007-12-18
Sulfuric Acid Plant
Cause: start up of Sulfuric Acid Pla

Followup: No

Notes: CITGO letter states that no RQ's were exceeded
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
101728

2007-12-14
Thermal Oxidizer
Cause: start up of D- Sulfur Recovery Unit (D-SR

Followup: No

Notes: CITGO letter states that no RQ's were exceeded
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
101552

2007-12-07
B-11 Flare
Cause: pilot outage at B-11 Flare

Followup: No

Notes: no reason for pilot outage given in report.
101498

2007-12-06
B-11 Flare
Cause: pilot outage at B-11 Flare

Followup: No

Notes: no reason for pilot outage given in report.
101359

2007-11-30
Sulfuric Acid Plant
Cause: routine start

Followup: No

Notes: CITGO letter states that no RQ's were exceeded
101370

2007-11-30
Cooling Towers 1 and 2
Cause: tube leak in E-12 overhead condenser, C-175D at the C-4 Recovery Un

Followup: No

Notes: COMMON INCIDENT - see 101177 of 11/20/2007 and 100067 of 10/09/2007
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
101225

2007-11-23
B-12 Flare
Cause: loss of JC1A Compressor at unicracker unit

Followup: No

Notes: CITGO letter states that no RQ's were exceeded
101206

2007-11-21
Sulfuric Acid Plant
Cause:

Followup: No

Notes: Verbal report indicates delayed notification of emission because there is a new person working the console. Release occurred during routine start up of Sulfuric Acid Plan
101209

2007-11-21
B-11 Flare
Cause: pilot outage on B-11 Flare

Followup: Yes

Notes: no reason for pilot outage given in report.
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.
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
100461

2007-10-23
JC-36 Topper Tail Gas Compressor
Cause: Hairline crack in small diameter piping on a pressure tap at the JC-36 Topper Tail Gas Compressor

Followup: No

Notes: CITGO letter states that no RQ's were exceeded
100153

2007-10-12
Tank 503
Cause: leaking relief valve on Tank 503

Followup: No

Notes: Valve will be repaired and put back in service
100067

2007-10-09
E-12 overhead condenser, C-175D, at the C-4 Recovery Unit
Cause: see notes

Followup: No

Notes: leak in the E-12 overhead condenser, C-175D, at the C-4 Recovery Unit causes emission. No cause given for lea
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
07-BB006-1119

2007-07-23
Sulfuric Acid Plant
Cause:

Followup: No

Notes: Emissions occurred during routine startup of Sulfuric Acid Plant
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
97987

2007-07-19
Tail gas treatment unit (TGII) at Sulfur Recovery Plant
Cause: Under Investigation

Followup: Yes

Notes: Sour H20 Stripper contained hydrocarbons which will foul the SRU. Off site impact of short duration
97649

2007-07-06
Sulfuric Acid Plant
Cause:

Followup: No

Notes: Emission occurred during routine start up of Sulfuric Acid Plant
97218

2007-06-19
Tail gas treatment unit (TGII) at Sulfur Recovery Plant
Cause: No information given

Followup: No

Notes: DEQ representative goes to site - does fenceline readings after a CITGO reading indicates a reading of 24ppm of Hydrogen Sulfide. 0's across the board
96817

2007-06-05
Sulfuric Acid Plant
Cause:

Followup: No

Notes: Emissions occurred during routine startup of Sulfuric Acid Plant
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
1,649.0 pounds
96739

2007-06-03
B-7 Flare
Cause:

Followup: No

Notes: Flaring occurred during shut down of the B-Topper Unit
96456

2007-05-23
Sulften tail gas treatment unit
Cause: See notes

Followup: No

Notes: Leak in a cross exchanger increased hydrogen sulfide emissions from the absorber vent.
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.
96183

2007-05-14
Unit Stack Sulfur Dioxide Analyzer
Cause: heavy rainfall with extensive lightning; analyzer disabled by lightning strike

Followup: No

Notes: Letter mentions sulfur dioxide and hydrogen sulfide but does not cite emission of Sulfur Trioxide, which is listed in the attached verabl repor
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.
95930

2007-05-05
B-11 Flare (EIQ No. 3(XXII)4) and (ID No. EQT 350)
Cause: pilot outages of B11 Flare - malfunctioning pressure regulator on nat. gas to pilots

Followup: No

Notes: Emissions exceeded RQ of 100 lbs. operator checks on gas line pressure downstream; development of a routine schedule for maintenance checks on the regulator; instrument group has repaired pressure regulator that malfunctioned.
1,451.0 pounds
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.
95799

2007-05-01
Sulfuric Acid Plant
Cause: routine start

Followup: No

Notes:
95526

2007-04-20
A-Sulfur Recovery Unit
Cause: analyzer malfunction at the A-Sulfur Recovery Unit

Followup: No

Notes: off site odor complaint
95491

2007-04-19
B-Topper Unit, B-7 Flare
Cause:

Followup: No

Notes:
95348

2007-04-13
E-Sulfur recovery Unit (E-SRU)
Cause: no information giv

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:
94866

2007-03-25
Sulfuric Acid Plant
Cause:

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
11.0 pounds
94446

2007-03-08
EIV valve J-36 Topper Tail Gas compressor
Cause: leaking emergency isolation valve on the J36 Topper Tail gasket

Followup: No

Notes:
94381

2007-03-05
A-Sulfur Recovery Unit
Cause: start up of A-Sulfur Recovery Unit from a planned turnarou

Followup: No

Notes: verbal report indicates that poisonous gas went offsite but no offsite protective action was taken; follow-up report on 4/16 indicates Citgo began implementation of six remedial tactics listed in the C-SRU Taill Gas Alternate Disposition Project Study on 4/10/07.
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:
93473

2007-01-25
Lube and Wax Plant Duosol unit
Cause: Unit upset and the flaring of process gas

Followup: No

Notes: Claims emission was below RQ; verbal report indicates that Terry Chretien of Citgo insists that the release had not gone off site even though it was a release to air.
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:
93048

2007-01-04
Tail gas treatment unit at Sulfur Recovery Plant
Cause: No information given

Followup: No

Notes: Claims emission was below RQ
111418

2008-12-14
Unicracker Unit
Cause: see notes

Followup: No

Notes: Flash fire in the Unicracker Unit
110375

2008-10-27
B-7 Flare
Cause: No information given

Followup: No

Notes: verbal report mentions C4 Recovery Unit, JC101 Compress
109636

2008-09-28
Tail Gas II Unit
Cause: upset in the A- Sulfur Recovery Unit

Followup: Yes

Notes: Incident initiated by hydrocarbons in the acid gas feed to the A-Sulfur Recovery Unit; An RCFA has begun to identify the root cause of the incident and establish action items to prevent recurrence.
1,149.0 pounds
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
798.0 pounds
108489

2008-09-02
E-SRU
Cause:

Followup: No

Notes: Start up of E-Sulfur Recovery unit; no further info given about reason for start up
108247

2008-08-21
Refinery
Cause: see notes

Followup: No

Notes: Power Failure
107918

2008-08-10
K16 Areas
Cause: a vessel at the gas treating plant was being drained

Followup: No

Notes: Hydrocarbon and hyrdogen sulfide odors emanating from plant
Under Investigation
107212

2008-07-15
Sulften Vent EQT297 ; Tail Gas II Stack EQT 298
Cause:

Followup: No

Notes: Some pollutants released onto Highway, which was sealed off during clean up. 5.5 inches of rain in a 3 hour period led to depressurization in process units and various instrumentation problems; event met or approached the 25-year 3-hour intensity standard; Install three additional sumps, pumps, and associated piping in the steam trench to alleviate flooding during heavy ra
133.0 pounds
107166

2008-07-13
CVEP Unit
Cause: No information given

Followup: No

Notes: Fire in the CVEP Unit
106702

2008-06-25
B-1 Flare (EQT343), B-5 Flare (EQT345), B-7 Flare (EQT347), B-12 Flare (EQT 351), B-16 Flare (EQT352)
Cause: see notes

Followup: Yes

Notes: Power Failure resulting from excessive moisture and dirt accumulation in switchgear breaker cubicle ; inadequaet physical clearance b/w insulators covering energized components; REMEDIAL ACTIONS: Clean and inspect all switchgear ; Eliminate practical spaces that allow air infiltration in or out of the switchgear room; modify switchgear purchase specifications to prohibit insulating material covering energized conductors to come in contact with materials from other phases; Modify QA-380-5045 tspect for insulating boots from adjacent phases to be in contact with one another; Verify other Powerhouse switchgear does not contain insulating boots that are in contact with one another; Install local temp and humidity monitors in rm, install anal
567.0 pounds
106260

2008-06-07
B-5 Flare
Cause:

Followup: No

Notes: Valve leak in ALCOH Unit
105850

2008-05-22
B-Reformer's C-408 Fin Fan Cooker
Cause: see notes

Followup: No

Notes: Leak in the Fin Fan Cooker causes release
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
104696

2008-04-14
Cooling Towers 1 and 2
Cause: see notes

Followup: No

Notes: COMMON INCIDENT: see also 104519 and 104069 C-175/D Heat Exchanger Bundle Leak at C4 Recovery Unit
104545

2008-04-07
B-7 Flare
Cause: combusting excess treated refinery fuel

Followup: No

Notes: CITGO letter states that emissions were BRQ
104519

2008-04-06
Cooling Towers 1 and 2
Cause: see notes

Followup: No

Notes: C-175/D Heat Exchanger Bundle Leak at C4 Recovery Unit
104069

2008-03-20
Cooling Towers 1 and 2
Cause: see notes

Followup: No

Notes: C-175/D Heat Exchanger Bundle Leak at C4 Recovery Unit
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-12 Flare
B-5 Flare
B-6 Flare
B-7 Flare
B-9 Flare
D-SRP, A-SRP, C-SRP
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
2,432.0 pounds
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
102678

2008-01-29
Sulfuric Acid Plant
Cause: routine startup of Sulfuric Acid Pla

Followup: No

Notes: CITGO letter states that the emissions were BRQ
102569

2008-01-25
Sulfuric Acid Plant
Cause: routine startup of Sulfuric Acid Pla

Followup: No

Notes: CITGO letter states that the emissions were BRQ
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.
118959

2009-10-23
Tail gas II unit
Cause: The Tail Gas II unit stripper tower began to pressure up due to flow restrictions in the overhead gas. The flow restriction diminished the ability of the stripper tower to remove RSC compounds from the amine solution and thus diminished the capacity of the amine solution to adsorb RSC compounds in the absorber tower. This resulted in elevated RSC levels in the atmospheric vent gas.

Followup: No

Notes: A hot condensate wash was conducted to dissolve salts in the stripper overhead system.
439.0 pounds
118715

2009-10-14
No information given
Cause: Accident related to shutdown of the Acid Plant. No RQs were exceeded so no further information is given.

Followup: No

Notes: No RQs were exceeded so no information is given.
118371

2009-10-02
No information given
Cause: Loss of pilot light on the B-8 flare

Followup: No

Notes: No RQs were exceeded so no information is given.
118282

2009-09-29
No information given
No information given.
Cause: No RQs were exceeded so no further information is given.

Followup: No

Notes: No information given
118135

2009-09-22
Cat area, Pipeline Leak, C-4 Recovery unit
Cause: A vent line in the C-4 Recovery unit ruptured. The line vented hydrocarbon until it was blocked. Caused by localized internal corrosion.

Followup: Yes

Notes: The line vent was blocked in.
829.0 pounds
117561

2009-08-27
E-8 Tower, Flare
Cause: Flaring of sor gas from the E-8 tower in the C4 Recovery Unit. No RQs were exceeded so no further information was given.

Followup: No

Notes: No information given
116615

2009-07-18
B7 Flare
Cause: No RQs were exceeded, so no information was given.

Followup: No

Notes: No information given
115685

2009-06-14
B-5 Flare
Cause: No RQs were exceeded, so no information was given.

Followup: No

Notes: No information given
114679

2009-05-04
B-8 flare
Cause: BLCOH unit compressor pressure relief valve lifted releasing hydrogen sulfide, nitrogen oxide and sulfur dioxide into the B-8 flare

Followup: No

Notes: gases burned in flare and release "secured"
115679

2009-05-04
B-8 flare
Cause: BLCOH unit compressor pressure relief valve lifted releasing hydrogen sulfide, nitrogen oxide and sulfur dioxide into the B-8 flare

Followup: No

Notes: gases burned in flare and release "secured"
114678

2009-05-04
Tail Gas 2 Unit
Cause: "B tower water stripper unit had foaming. This caused the relief valve in the tail gas unit to be picked up by an analyzer. The analyzer goes to alarm. The gases were then figured to release into the air."

Followup: No

Notes: No information given as to remedial actions. Classified as "a non-emergency" situation
113973

2009-04-06

storm water sewer
Cause: Source of hydrogen sulfide and ammonia odors were detected in the vicinity of the storm water main lateral is under investigation.

Followup: Yes

Notes: Investigation and closure letter are to be delivered by 5-15-09.
113969

2009-04-05
B-5
Cause: B-5 flare

Followup:

Notes: no information given
113969

2009-04-05
B-5
Cause: B-5 flare

Followup:

Notes: no information given
112841

2009-02-18
B-8 Flare in C4 unit
Cause: Release of Sour Gas from B-8 flare due to the lifting of a pressure valve in the C4 Recovery unit at the CITGO Lake Charles Manufacturing Complex where the E10 tower was lifted and reset itself.

Followup:

Notes: C4 unit at the E10 tower reset itself. Material was discharged into surrounding area air.
112786

2009-02-16
B-16 flare at Ultra Low Sulfur Diesel Unit
B-16 flare in 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.
112389

2009-01-29
B-Topper unit
Cause: B-Topper unit shut down, flaring of hydrocarbons and smoking furnaces as a result of the failure of a 13.8kV underground feeder cable.

Followup: No

Notes: Release of carbonyl sulfide occurred on 01-29-09, 01-30-09, 02-05-09. Release of hydrogen sulfide occurred on 01-30-09, 02-05-09.Efforts were made to shut down the B-Topper unit and affected electrical equipment was tripped off.
3.1 pounds
112389

2009-01-29
B-Topper unit
Cause: B-Topper unit shut down, flaring of hydrocarbons and smoking furnaces as a result of the failure of a 13.8kV underground feeder cable.

Followup: No

Notes: Release of carbonyl sulfide occurred on 01-29-09, 01-30-09, 02-05-09. Release of hydrogen sulfide occurred on 01-30-09, 02-05-09.Efforts were made to shut down the B-Topper unit and affected electrical equipment was tripped off.
4.7 pounds
128390

2010-12-29
FLARE: Flare B-11 & B-12; Coker 2 Unit
Cause: "...they shutdown a gas compressor at the coker 2 unit due to liquid in a drum....An unknown amount of hydrogen sulfide and sulfur dioxide was released to the flare." FLARE.

Followup: No

Notes: BRQ. Refinery letter states that no reportable quantities were exceeded. No additional information given.
128354

2010-12-27
FLARE: F107 drum to B1104 flare
Cause: "...Citgo was starting up the crude vacuum unit [1] when the F107 drum pressured up and went to the B1104 flare at the refinery. An unknown amount of natural gas and hydrogen sulfide was released in the incident." FLARE.

Followup: No

Notes: BRQ. Refinery letter states that no reportable quantities were exceeded. No Information given.
128117

2010-12-13
tank 526
Cause: Venting of tank 526 from a pressure safety valve. "Operator was making his rounds and saw a relief valve leaking on Tank 526..."

Followup: No

Notes: "Valve blocked in and everything was secured."
125415

2010-08-05
E103 tower overhead
Cause: Tubing leak in the Unicracker unit, E103 tower overhead. Leak was discovered during a routine maintenance check of equipment.

Followup: No

Notes: Blocked tubing, depressurized line.
125060

2010-07-22
FLARE; J-36 compressor
Cause: LDEQ report states that "A J-36 compressor tripped at the refinery and caused the flaring of tail gas consisting of H2S, flammable gases, and VOCs for app an hour and a half." FLARE.

Followup: No

Notes: BRQ. Refinery letter states that no reportable quantities were exceeded. There was perimeter monitoring but no readings were indicated.
123898

2010-06-02
B-12 flare
Cause: G8 filter over-pressurized while being warmed and went to B12 flare.

Followup: No

Notes: no information given
123765

2010-05-26
B7 flare
Cause: Leaking relief valve from the B Catcracker Unit caused additional material to go to flare.

Followup: No

Notes: no information given
123702

2010-05-23
B12 flare
Cause: Lost a compressor in process unit, chemicals released to flare--no details.

Followup: No

Notes: Spare compressor was put on
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
123039

2010-04-25
no information given
Cause: Approx. 3/8'' hole in line [pipe] releasing sour water into ditch and H2S to air.

Followup: No

Notes: BRQ. Refinery letter states that "an investigation into the incident concluded that the materials released were below the reportable quantity. LDEQ report states that personnel installed temp clamp but still has "small leak," placed containment pool under leak & will vacuum as it accumulates.
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
#7 flare
Cause: smoke coming out of flare from unknown source--no more details given--no RQs exceeded

Followup: No

Notes: no information given
122264

2010-03-21
B6 flare
Cause: JC-36 compressor shut down, caused line to overpressurize and release to flare.

Followup: No

Notes: No information given. SPOC and refinery letter only. No LDEQ report.
122168

2010-03-17
B-12 flare
Cause: Swapping out compressors, overloaded system, valve released to flare

Followup: No

Notes: no information given
121535

2010-02-17
FLARE: B8 flare
Cause: relief valve at the C4 unit released sending sour hydrocarbons to the B8 flare. FLARE.

Followup: Yes

Notes: no info 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
120675

2010-01-09
flange in the Coker II Unit
Cause: Flange leak of sour water in the Coker II unit. No RQs were exceeded, so no further information was given.

Followup: No

Notes: No RQs were exceeded, so no information was given.
135306

2011-11-16
Vessel, Valve on Marpol Line
Cause: LDEQ responded to the incident at Citgo Petroleum D Dock, where the marine vessel Chembulk New Orleans appeared to have started leaking xylene after loading approximately 22,000 bbls onto the vessel. The discharge appeared to be coming from under the bottom of the vessel under a slop tank storage compartment. It was creating a light sheen and a strong odor in the area of the discharge along the dock area, so hard booms were deployed around the vessel by Citgo and ES&H. Slop tank was pumped into another compartment that appeared to slow the leak. Vessel personnel stated that the vessel was double hulled and the xylene was not coming from the vessel. Citgo personnel considered sending a diver on 11/17/11 to assess the discharge area under the vessel. Kevin Natali was notified by Citgo on 11/17/11 that 4 valves on the Marpol line (which discharges overboard) on board the vessel was found to be leaking. The leaks was secured at approximately 4 am on 11/17/11 and it was determined that a diver was not needed.

Followup: No

Notes: Vessel was inspected by the US Coast Guard before it was released. Incident linked to #135315. Multi Gas Monitor Report included with readings from across the river during the accident. VOC levels fluctuated between 1 and 9 ppm. Readings also show low levels of carbon monoxide and sulfur dioxide. Citgo initially claimed the leak was not coming from the vessel. Later, leak found on board the vessel. VOC had a conversion factor of 0.4, this may mean that values were reduced to 400lbs but the closed report states 1000 lbs.
132764

2011-08-01
B-7 Flare EQT347
Fired heaters and boilers
Sulfen Vent Stack EQT297, Tail Gas II Vent Stack EQT298, B-7 Flare
Sulften Vent Stack, Tail Gas II Vent Stack
Cause: The operator failed to manually reset the solenoid valve that controlled the level in the F-104 drum prior to restarting the JC-102 compressor. Based on the definition of control equipment inLAC 33:III.1 1 1, Citgo failed, in this incident, to diligently maintain control equipment in proper working order whenever emissions were being made. That initial failure to reset the solenoid valve cause a string of upsets, which began with the central amine upset.

Followup: Yes

Notes: Immediate corrective actions taken were removing excess hydrocarbon from the central amine unit, amine feed to the SRUs was reduced, and efforts were made to identify the hydrocarbon source. Citgo conducted an incident investigation, which outlines several actions to be taken. Additional letters from refinery regarding this incident: 8/18/11, 10/27/11
132807

2011-07-30
FLARE-Ultra-low Sulfur Diesel hydrotreater, B-16 flare
Cause: Ultra-low Sulfur Diesel Hydrotreater (USLD) unit upset led to unplanned shutdown and flaring.

Followup: No

Notes: BRQ. No information given regarding remedial actions. No LDEQ report included. Notified the SPOC 24:36 after incident occured.
131653

2011-06-05
Unicracker unit
Cause: LDEQ report states that power was lost to the Unicracker unit resulting in a flare.

Followup: No

Notes: BRQ: Quantities of hydrogen sulfide and sulfur dioxide were below reportable quantities. No further information on remedial actions was given.
129988

2011-03-17
Sour Gas Line
Cause: State police report states that there was a leak in a three inch line under a relief valve at the vacuum unit. Product of the release was sour gas and went off-site.

Followup: No

Notes: BRQ. Line was blocked and repaired. Air monitoring was performed in the plant area, and no readings were indicated.
129836

2011-03-13
FLARE: JC101 Compressor to B7 Flare
Cause: FLARE. State police report states that C-4 recovery unit JC101 compressor tripped and vented to the B7 Flare. Chemicals burned out in the flare.

Followup: No

Notes: BRQ. Refinery letter states that a "review of operating data showed that no reportable quantities were exceeded." Refinery letter and SPOC report only. No LDEQ report.
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.
129077

2011-02-06
C-Cat PC152 Instrument
Cause: State police report states that the C-Cat PC152 instrument failure caused over-pressurization of the E1 Fractionator.

Followup: No

Notes: BRQ. Refinery letter states that "review of operating data showed that no RQ were exceeded." Pressure was relieved by releasing the hydrogen sulfide and sulfur dioxide to the B-7 Flare. Refinery letter and SPOC report only. No LDEQ report.
128986

2011-02-02
FLARE: F-27 Knockout Drum Pressure Safety Valve
Cause: FLARE. State police report states that hydrogen sulfide was released from an F-27 knockout drum pressure safety valve.

Followup: No

Notes: BRQ. Refinery letter states that "a review of operating data during the event show that no RQ were exceeded." No Information Given regarding remedial actions. Refinery letter and SPOC report only. No LDEQ report.
128815

2011-01-22
FLARE: C-4 Recovery JC101A Compressor to B7 Flare
Cause: LDEQ states that the facility experienced a process problem due to a tower over-pressurizing.

Followup: No

Notes: BRQ. LDEQ report states that "operating data shows" that no reportable quantities were exceeded. Workers had to manually open the relief to the flare, and the C-4 Recovery JC101A compressor was shut down for a short period of time.
5.0 pounds
128759

2011-01-21
FLARE: Unit E-2 Depropanizer & B6 Flare
Cause: Flaring occurred due to a pressure safety valve release from the Straight Run Fractionation Unit E2 depropanizer tower. Hydrogen sulfide was released at levels below the RQ's.

Followup: No

Notes: BRQ. Flare lasted for four minutes before returning to normal.
145571

2012-12-26
Coker 2 Unit
Cause: A compressor upset on the Coker 2 Unit caused the gases to go to the flare.

Followup: No

Notes: An unknown amount of sulfur dioxide, hydrogen sulfide, and nitrous oxide went to the flare as a result of this incident. Air monitoring was being preformed up to the fence line and readings are unknown at this time.
145516

2012-12-23
Tail Gas II vent
Cause: Citgo Petroleum reported elevated levels of reduced sulfur compounds in the Tail Gas II vent at the Lake Charles Manufacturing Complex, but no information is given about the cause of the release. In the initial notifications made by phone, Citgo reports that the suspected cause is a leak and that repairs were being made.

Followup: Yes

Notes: CITGO's preliminary review of the operating data from this incident indicated that an RQ for H2S may have been exceeded, but CITGO confirms that no RQs were exceeded in a report submitted 1/9/13.
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.
258.0 pounds
136963

2012-02-03
K-19 line leak
Cause: K-19 line leak. A dresser coupling failed and leaked 1 barrel of finished gasoline. Coupler between piping for a barrel. This is a seal between piping and vessel.

Followup: No

Notes: The materials were contained in a concrete area. The line was isolates, foam was added, and the line was repaired. Planning to replace it with a hard line. The RQs for Flammable Gas and VOCs were exceeded.
1.3 pounds
136319

2012-01-05

FLARE: Multiple flares coming from UNI Cracker, Coker 2, Acid Plant, and SRU
Cause: There was a total plant power failure. The UNI Cracker, Coker 2, Acid Plant, and SRU are all flaring.

Followup: No

Notes: The electrical problem was corrected and air monitoring took place.
152225

2013-11-07
Furnace Tube
Cause: A fire occurred on the A-Reformer combination furnace during startup. Preliminary indication is that a furnace tube, located in the convective section, developed a leak which resulted in a fire.

Followup: No

Notes:
149329

2013-06-20
B502 Reactor D-SRU
Thermal Oxidizer
Cause: On June 20, a release of hydrogen sulfide and sulfur dioxide into the air was caused by a small leak from the B502 Reactor furnace in the D-Sulfur Recovery Unit was discovered.

Followup: Yes

Notes: The unit was shut down and the leak was repaired. According to CITGO, a review of the operating data from this event showed that no RQs were exceeded, but the start-up of the unit resulted in emissions that exceeded the RQ of 500 pounds for sulfur dioxide. During startup after the incident on June 22, the unit sent tail gas to the thermal oxidizer while heating up the catalyst beds with natural gas. Sulfur dioxide emissions during this time was 1818 pounds. Pursuant to Paragraph 93a of the NSR Consent Decree, stipulated penalties shall not apply to a tail gas incident attributable to the scheduled start-up of an individual train at the SRP located at the Lake Charles Refinery, provided that CITGO demonstrates that it has implemented good air pollution control practices.
147294

2013-03-13
Coker I JC-106
Cause: On March 13, 203 CITGO Lake Charles Manufacturing Complex had a flaring event involving the Coker 1 JC-106 compressor. The JC-106 compressor shut down requiring flaring of sour gas through the b5 flare. Hydrogen sulfide and nitric oxide were mentioned in the LDEQ report.

Followup: No

Notes: The refinery letter stated that no reportable quantities had been exceeded, with no additional information on specific substances.
160105

2014-11-15
Dock A
Cause: Explosion occurred in the last 30 minutes of loading a sulfur barge at Dock A. Explosion ignited a small (approximately 30 square feet) grass fire on the west side of Dock A. Citgo then stated that no reportable quantities were exceeded during the event.

Followup:

Notes: Fire was extinguished
159893

2014-11-05
Fuel Gas System
Cause: Citgo notified the Louisiana State Police HAZMAT, the Louisiana Department of Environmental Quality and the Emergency Planning Committee on 11/5/15 of high levels of hydrogen sulfide in the fuel gas system. Written report on 11/11/15 states that operating data from this event showed no reportable quantities were exceeded during the event.

Followup: No

Notes:
153706

2014-02-05

Cause: A release of hydrogen sulfide and flammable gas from a flange leak in the Coker II unit was reported on February 5, 2014.

Followup: No

Notes: Only information available about this accident is from refinery letter.