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CITGO Petroleum (1250), Lake Charles

Releases of Butane

LDEQ Accident Number
Accident Date		 Point Source(s) Notes Amount of Release
84111

2005-11-27		Alkylation Unit
Cause: Pinhole leak on 8" pipe at Alkylation Unit.

Followup: No

Notes: Claims emission was below RQ
83843

2005-11-12		Alkylation Unit
Cause: Leak in line of butane at the Alkylation Unit.

Followup: No

Notes: Claims emission was below RQ. Repairs planned and made.
82254

2005-09-16		Alkylation Unit
Cause: Pinhole leak in the weld of a butane pipeline discovered at the Alkylation Unit.

Followup: No

Notes: Claims emission was below RQ. Line was isolated and a water spray from the fire monitors was applied to keep the vapors to a minimum. Air monitoring detected offsite impact.
81999

2005-09-07
Cause: Lost control of skid due to light end in the feed, emergency shut down of MTB Unit resulting in a smoking flare of mixed butane

Followup: No

Notes: Claims emission was below RQ. Offsite impact.
76801

2005-02-08		MTBE Unit
Cause: malfunction of a tube bundle on the MTBE production unit skid put Butane in the sewer system

Followup: No

Notes: Flushed out the sewer system and directed into the secondary treatment facility
76428

2005-01-24		#2 and #3 tank valve on Barge 10809
Cause: vapor clous escaped from tank valve

Followup: No

Notes: Computer program tracks operation of valves, creates work order every 90 times valve is operated. Will inspect the valves and determine if needs to be adjuste
76032

2005-01-07		unloading hose at A Dock
Cause: Ruptured hose while unloading barge

Followup: No

Notes: Claims emission was below RQ
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.
97781

2007-07-11		Alkylation Unit
Cause:

Followup: No

Notes: A bleeder valve break at the Alkylation Unit caused emission.
97675

2007-07-07		Sewer system at alkylation unit
Cause: Under Investigation

Followup: No

Notes: CITGO attempts to flush out sewer line to find leak; has not found it.
95917

2007-05-06		6 inch transfer line in A-dock
Cause:

Followup: No

Notes: Butane released from a 6 inch unloading line. Remedial action: Identified the line and the line has been depressured; the State Police Incident No. on the CITGO letter is 07-02315; the State Police Incident No. on the verbal report is 07-02316
93266

2007-01-14		Tank 15
Cause:

Followup: No

Notes: Line taken out of service and depressurized; water blanket placed over leaking flange
117244

2009-08-13		Tank 526
Cause: No RQs were exceeded so no information was given.

Followup: No

Notes: No information given
117221

2009-08-11		Tank 526
Cause: No RQs were exceeded so no further information was given.

Followup: No

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.
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.