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ExxonMobil Refinery (2638), Baton Rouge

Causal Factor: Corrosion

LDEQ Accident Number
Accident Date
Point Source(s) Notes Amount of Release
No LDEQ Reported

2005-12-10
underground pipe
Cause: see notes

Followup: No

Notes: contaminated soil is being remediated. The underground section of piping was clamped and blinded; the section of piping at the pipe support was blocked out and will be blinded.Bothing leaking sections of line will be replaced. Seven yards of soil have been removed; there were 2 leaks (one from corrosion and the other cause wasn't explained); gasoline leaked from an underground section of piping and at a support on the above ground section of piping
Premium Gasoline: 67.0 gallons
No LDEQ Reported

2005-12-09
leak from underground section of piping
Cause: the leak was caused by external corrosion

Followup: No

Notes: the line was blocked out and temporarily removed from service; the section of the line that leaked is being repaired before the line is returned to service;Discharge was not preventable because there were no previous leaks on this underground section ofline
Crude Oil: 1,260.0 gallons
Volatile Organic Compounds: 9,253.0 pounds
No LDEQ Reported

2005-11-13
No3 Depropanizer condensor
Cause: leak in the No3 depropanizer condensor due to corrosion

Followup: No

Notes: Exchanger was taken out of service on 11/13 at 9:35am; the inspection department plans to re-inspect the overhead piping system to determine if other corrosion issues exist and to repair the tube bundle that was leaking; this was not preventable becausepiping inspections were performed according to API code and the inspection did not indicate problems with the overhead system integrity
Isobutane: 49,847.0 pounds
Propane: 474.0 pounds
83432

2005-10-26
underground section of a slop line from the pipestills units
Cause: the leak was caused by external corrosion

Followup: No

Notes: the stream in the slop line was switched to an alternate line and the leaking line was temporarily removed from service; was not preventable because there were no previous leaks on this underground section of line
Crude Oil: 76.0 gallons
No LDEQ Reported

2005-07-11
spill from a line running through the levee
Cause: the leak is suspected to have been caused by external corrosion

Followup: No

Notes: the leaking line was water washed and isolated. The contaminated soil was removed and a sock boom was placed between the spill and the river; leak was not preventable because there were no previous leaks on this line
Light Cat Cycle Oil: 84.0 gallons
80155

2005-06-28
No3 Depropanizer condensor
Cause: Leak in the overhead piping system was determined to be from internal corrosion

Followup: No

Notes: the No3 depropanizer was shut down and the section of pipe containing the leak will be replaced.
Flammable Vapor: 9,568.0 pounds
Volatile Organic Compounds (VOCs): 9,568.0 pounds
No LDEQ Reported

2005-06-20
tank 82
Cause:

Followup: No

Notes: the line was blocked from the tank and then a pump was used to pull a vacuum on the line, so clamps could be put over the leaks; internal corrosion inspections on similar piping outside the firewall did not show corrosion concerns, therefore internal corrosion was not expect
Crude Oil: 806.0 gallons
Volatile Organic Compounds: 5,775.0 pounds
No LDEQ Reported

2005-02-24
Underground Pipe
Cause: Corrosion of the underground pipe.

Followup: No

Notes: Material in the line was rerouted and the line was blocked out. The soil is being picked up and will be treated offsite. Leak clamped and pipe replaced. Leak not preventable because there have been no previous leaks along this pipeline. No ground water wells in the vicinity of the release
Fuel: 214.0 gallons
91883

2006-11-06
# 3 Light Ends
Cause: a small hole was discovered in the overhead line of the T-103 tower (#1 Depropanizer) at the #3 Light Ends Unit. The hole is thought to have been caused by corrosion.

Followup: No

Notes: This incident was not preventable because the overhead line was within the expected service life. The portion of the line that leaked will be inspected and repaired or replaced as appropriate. The Louisiana State Police reportable quantity for flammablevapor has been exceeded.
Flammable Vapor: 1,664.0 pounds
91828

2006-11-02
LELA-E E-9 fin fan cooler, R-401 reactor in LELA-S
Cause: the leak on the LELA-E E-9 fin fan cooler is thought to have been caused by internal corrosion. The leak on the R-401 reactor in LELA-S is thought to have been caused by internal corrosion.

Followup: No

Notes: This incident was not preventable because the fin fan cooler was within its serviceable life. Remedial Measures - the cooler components will be inspected and repaired or replaced, as appropriate. NOTE: there were two separate leaks within the same time period each occurring on the separately listed sources. ExxonMobil's report has combined the total amount of flammable vapors. The reportable quantity for flammable vapor has been exceeded
Flammable Vapor: 2,761.0 pounds
90788

2006-09-21
E-515 B Exchanger on the 2 Light Ends Unit
Cause: the E-515 B Exchanger on the 2 Light Ends Unit was leaking to Cooling Tower #25. The leak is form corrosion on the tube bundle.

Followup: No

Notes: This incident was not preventable because inspection records for this exchanger indicate no history of leaks or premature failure. Records also show that this equipment was last inspected/tested 3 years ago and found to be in good condition. Remedial Measures - the exchanger bundle will be inspected and repaired or replaced, as appropriate. Reportable quantities for propylene and butene have been exceeded
Butene: 139.0 pounds
Propylene: 113.0 pounds
Volatile Organic Compounds: 212.0 pounds
90226

2006-08-24
E-552A and E-553A Exchangers on the Coker
Cause: the E-552A and E-553 Exchangers on the Coker were discovered leaking into Cooling Tower #44. The leak on the E-553A was stopped 20 mins. Later while the leak on the E-552A continued until August 26th, 2006. The leaks are believed to have been caused by accelerated corrosion

Followup: No

Notes: This incident was not preventable because inspection reports on these exchanger bundles indicate that both failed prematurely. Remedial Measures - The existing tube bundles will be repaired/replaced as necessary. Metallurgy of these exchangers will be upgraded. Reportable quantities for volatile organic compounds, hydrogen sulfide, and benzene were exceeded. Note: in the follow up report, it was found that the reportable quantities for hexane, 1,3 Butadiene, and highly reactive volatile organicpounds were exceeded as well. The previously reported level of volatile organic compounds was 8800 and was later found to be 66388, for hydrogen sulfide it was 901/4578, and for benzene it was 59/43
Hexane: 2,054.0 pounds
1,3-Butadiene: 96.0 pounds
Hydrogen Sulfide: 4,578.0 pounds
Volatile Organic Compounds (VOCs): 66,388.0 pounds
Benzene: 443.0 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs): 177.0 pounds
90043

2006-08-16
E-205 A/B exchanger bank on the Heavy Cat Naptha Unit
Cause: the E-205 A/B exchanger bank on the Heavy Cat Naptha Unit was leaking to Cooling Tower #27. The leak is believed to be from corrosion on the tube bundle.

Followup: No

Notes: This incident was not preventable because the inspection data for this bank of exchangers did not indicate that a failure was imminent. These bundles were tested in January 2005 and were found to have no leaks. Remedial Measures - the exchanger bundle will be inspected and repaired or replaced as appropriate. The reportable quantities for benzene, toluene, naphthalene, volatile organic compounds, xylene mixed isomers, and o-xylene were exceeded. It is possible that the reportable quantities forylene and p-xylene were also exceeded, but available stream specification data does not allow differentiation between the these two isomers
Benzene: 92.0 pounds
Toluene: 899.0 pounds
o-Xylene: 681.0 pounds
Naphthalene: 253.0 pounds
Xylene: 1,854.0 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs): 1,581.0 pounds
Volatile Organic Compounds (VOCs): 12,539.0 pounds
Hydrogen Sulfide: 70.0 pounds
Xylene: 1,854.0 pounds
Pseudocumene: 1,489.0 pounds
Ethylbenzene: 330.0 pounds
Benzene: 92.0 pounds
n-Hexane: 55.0 pounds
Cyclohexane: 37.0 pounds
Cumene: 13.0 pounds
Styrene: 4.0 pounds
Phenol: 2.0 pounds
Quinoline: 2.0 pounds
89850

2006-08-04
E-513 A exchanger on the 2 Light Ends Unit
Cause: E-513 A exchanger on the 2 Light Ends unit was leaking hydrocarbon to Cooling Tower #25. The leak is believed to have come from corrosion on the hydrocarbon side of the tube bundle.

Followup: No

Notes: This incident was not preventable because previous inspection reports indicate that this exchanger bundle is less than 6 years old and in serviceable condition. Remedial Measures - this bundle will either be replaced with a new bundle or repaired. A metallurgy upgrade to 410 stainless steel is being evaluated. Replacement and/or upgrade of exchanger bundles in similar is also being considered. LDEQ reportable quantities for butenes, propylene, highly reactive volatile organic compounds, and 1,3adiene were exceeded
Butene: 1,011.0 pounds

Ethylene: 891.0 pounds
1,3-Butadiene: 727.0 pounds
Hydrogen Sulfide: 25.0 pounds
Volatile Organic Compounds (VOCs): 13.0 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs): 30.0 pounds
89635

2006-08-01
E-205 C/D exchanger bank on the Heavy Cat Naptha Unit
Cause: the E-205 C/D exchanger bank on the Heavy Cat Naptha unit was leaking to Cooling Tower #27. The leak is believed to be from corrosion on the tube bundle.

Followup: No

Notes: This incident was not preventable because the inspection data for this bank of exchangers did not indicate that a failure was imminent. These bundles were tested in January 2005 and were found to have no leaks. Remedial Measures - the exchanger bundle will be inspected and repaired or replaced as appropriate. The reportable quantities for xylene, benzene, toluene, naphthalene, and volatile organic compounds were all exceeded
Hydrogen Sulfide: 32.0 pounds
Volatile Organic Compounds: 6,955.0 pounds
Xylene: 847.0 pounds
Pseudocumene: 681.0 pounds
Toluene: 411.0 pounds
o-Xylene: 311.0 pounds
Ethylbenzene: 151.0 pounds
Naphthalene: 116.0 pounds
Benzene: 42.0 pounds
n-Hexane: 25.0 pounds
Cyclohexane: 17.0 pounds
Cumene: 6.0 pounds
Phenol: 1.0 pounds
Styrene: 2.0 pounds
Quinoline: 1.0 pounds
89623

2006-08-01
Disengaging drum/ underground line on the Heavy Cat Naptha Unit
Cause: a leak was discovered in the water draw from the disengaging drum on the Heavy Cat Naptha Unit. The leak was from an underground line, and was due to external corrosion

Followup: No

Notes: This was not preventable because the inspection data for this line indicated that the line had an expected retirement date of April 2011. Inspection data also confirmed that the protective coating at the soil/air interface was in satisfactory condition.Remedial Measures - the leaking line was replaced. NOTE: the State Police RQ and the DEQ RQ for Corrosive Waste is 100. This leak produced 33,881lbs.of corrosive waste. The State Police RQ and DEDQ RQ for primary sludge is 1. This leak produced 81lbs. of primary waste
Corrosive Waste: 33,881.0 pounds
Primary Sludge: 33,881.0 pounds
87800

2006-05-12
Alkylation Unit
Cause: the cause of the leak was isolated corrosion on a weld. A leak of spent sulfuric acid, D002, was discovered from an Alkylation line. The line was blocked out and purged with nitrogen to stop the leak. The spent acid was neutralized using soda ash and the contaminated soil is being remediated

Followup: No

Notes: The leak was not preventable because the inspection data indicated the line was satisfactory until 2007. Subsequent inspection data confirmed that the leak was due to localized corrosion and not predictable. Remedial Measures - the leaking section of the pipe will be replaced. The reportable quantity for D002, Corrosive Wastes was exceeded
Corrosive Waste: 150.0 pounds
87621

2006-05-04
E-3 exchanger on the Coker
Cause: the leak is believed to have been caused by corrosion and erosion

Followup: No

Notes: There is no information whatsoever as to why the accident was preventable. Remedial Measures- the bundle was replaced with a new bundle. In the letter to LDEQ, Exxon states that the reportable quantities for hydrogen sulfide and benzene were exceeded
Hydrogen Sulfide: 183.0 pounds
Benzene: 12.0 pounds
Volatile Organic Compounds (VOCs): 1,785.0 pounds
n-Hexane: 56.0 pounds
Toluene: 4.0 pounds
Cyclohexane: 4.0 pounds
1,3-Butadiene: 3.0 pounds


Highly Reactive Volatile Organic Compounds (HRVOCs): 5.0 pounds
86722

2006-03-24
FLARE - as a result of a leak from the ammonia gas line to the No. 100 Sulfur Plant (SRLA-100)
Cause: the pipe leaked due to new corrosion hole that had developed under the edge of a clamp that was installed in November. The existing clamp was tightened which did not stop the leak so it was replaced with a new clamp which also did not stop the leak. Since the newly installed clamp did not stop the leak, the old clamp was then reinstalled with a new gasket which still did not stop the leak. The feed spheres to the Sour Water Strippers became full which required the start up of the Sour Water Strippers to the flare syste

Followup: No

Notes: The incident was not preventable because, The clamp was installed in Nov. 2005 due to a pinhole leak from condensate corrosion. At that time, the line was x-rayed and no areas of concern were discovered outside the area under the clamp. Therefore, the corrosion hole that led to the release could not have been predicted. Remedial actions- a similar line exists to the SRLA-200 unit. This line will be inspected and repaired while the SRLA 200 unit is down. The letter to LDEQ ss that the reportable quantities for ammonia, hydrogen sulfide, sulfur dioxide, nitrogen oxide, and nitrogen dioxide were exceeded. Note: there is a time discrepancy - the report states that the incident started at 2:30pm on 03/24/2006 but was discov
Sulfur Dioxide: 83,580.0 pounds
Nitrogen Oxide: 270.0 pounds
Ammonia: 250.0 pounds
Nitrogen Dioxide: 18,830.0 pounds
Nitric Oxide: 266.0 pounds
Hydrocarbon: 2,551.0 pounds
Water: 80.0 pounds
Hydrogen Sulfide: 1,090.0 pounds
86453

2006-03-13
E-553B Exchanger at the coker
E-553B Exchanger leak at the coker
Cause: -the E-553B exchanger on the Coker was leaking to Cooling Tower #44. The leak is believed to be from the corrosion on the tube bundle.

Followup: No

Notes: Remedial measures - The leaking tube on the E-553 exchanger will be plugged and the exchanger will be pressure tested before it is returned to service. The accident was not preventable because the exchanger had not leaked previously and the tube bundle was approximately 18 months old. The report letter to LDEQ states that the reportable quantities for benzene, hydrogen sulfide, volatile organic compounds, and 1,3-butadine were exceeded.
Highly Reactive Volatile Organic Compounds (HRVOCs): 72.0 pounds
1,3-Butadiene: 39.0 pounds
Hydrogen Sulfide: 2,759.0 pounds
Volatile Organic Compounds (VOCs): 26,738.0 pounds
Hexane: 832.0 pounds
Toluene: 65.0 pounds
Cyclohexane: 57.0 pounds
Xylene: 6.0 pounds
Ethylbenzene: 6.0 pounds
Benzene: 179.0 pounds
85263

2006-01-19
No. 2 Powerformer Unit T-4X
Cause: a leak on the shell of their tower (T-4X) is believed to have been caused from the failure of the mortar in the joints of the tile which lines the inside of the tower, which allowed acid to attack the carbon steel shel

Followup: No

Notes: Incidents 06-00380, 06-00401 occurred simultaneously on January 19th and on Jan. 20th 06-00406 occurred, overlapping with the first two. The reportable quantities for highly reactive volatile organic compounds and flammable vapors were exceeded when the emissions from these three events were summed over the first 24 hour period beginning with the initiation of the release from the No. 2 Powerformer Unit. With regard to the 24 hour period beginning with the release at the MTBE Unit, there wereeportable quantity exceedances for this period of time. The emissions limit exceeded the reportable quantity threshold only during the time when all three incidents were taking place simultaneously. The mortar in T-4X will be replaced with a Furan r
Hydrogen: 16.0 pounds
Carbon Dioxide: 3.0 pounds
C1: 228.0 pounds
C2: 49.0 pounds
Ethylene: 4.0 pounds
C3: 25.0 pounds
Propylene: 4.0 pounds
Butane: 8.0 pounds
Nitrogen: 40.0 pounds

101737

2007-12-16
Spill
Cause: External corrosion

Followup: No

Notes: clamps were installed to stop leak and blinds were installed at upstream block valves to completely isolate lines
Diesel Fuel: 88.0 gallons
Hydrocarbon: 586.0 pounds
101643

2007-12-12
Leak-pinhole leak in portion of line
Cause: External corrosion

Followup: No

Notes: A clamp was installed to stop leak, Unused line will be dismantled to prevent another le
Aviation Fuel: 45.0 gallons
Hydrocarbon: 767.0 pounds
101616

2007-12-11
Leak in sewer line
Cause: External corrosion of carbon steel line

Followup: No

Notes: Clamps installed as short term repair, leaking line will be replace
Primary Sludge: 250.0 pounds
100553

2007-10-26
Leak-unused line
Cause: External corrosion of unused line

Followup: No

Notes: Water washer was shut down and line was isolated to stop leak. Vaccum truck was used to remove oil from soil and surrounding concrete.
Oil: 51.0 gallons
100459

2007-10-23
Exchanger leak-E514A leak
Cause: corrosion of tube bundle

Followup: No

Notes: Exhanger was blocked and removed from service.
Butene: 911.0 pounds
Propylene: 876.0 pounds
100177

2007-10-15
Exchanger leak-leak on E15A
Cause: corrosion of tube bundle

Followup: No

Notes: Exchanger blocked and removed from service. Tube bundle will be inspected and repaired as appropriate.
Highly Reactive Volatile Organic Compounds (HRVOCs): 159.0 pounds
99196

2007-09-05
Exchanger leak
Cause: under deposit corrosion of tube bundle

Followup: No

Notes: The leaking exchanger was bypassed and removed from service. The metallurgy in the tube bundle is being upgraded to duplex stainless steel. Other exchangers have either been upgraded or soon to be in the near future.
Volatile Organic Compounds: 1,239.0 pounds
98877

2007-08-23
Leak
Cause: Isolated internal pipe corrosion

Followup: No

Notes: Unit was shut down and piping depressurized. Corroded pipe replaced. Similar areas of piping will be radiographed to identify other risks.
Flammable Vapor: 1,123.0 pounds
97569

2007-06-29
ammonia acid gas leak
Cause: Internal acid corrosion on acid gas line

Followup: No

Notes: Leaking line was removed and will be repaired before returned to service.
Ammonia: 165.0 pounds
97336

2007-06-22
Leak-Idle stream line
Cause: Internal acid corrosion

Followup: Yes

Notes: Under Investigation- If investigation shows different causal factor, a follow up will be given. The leaking portion of the line was clamped to stop releas
Argon: 227.0 pounds
Nitrogen: 13,278.0 pounds
Carbon Monoxide: 108.0 pounds
Carbon Dioxide: 1,144.0 pounds
Hydrogen Sulfide: 133.0 pounds
Water: 4,535.0 pounds
97173

2007-06-17
Leak-tower leak
Cause: Internal and external

Followup: Yes

Notes: Tower shut down to stop leak. Tower repaired before returned to service
Water: 413.0 pounds
Methane: 34.0 pounds
Ethane: 38.0 pounds
Propane: 31.0 pounds
Flammable Vapor: 3,275.0 pounds
Butane: 63.0 pounds
Hydrogen Sulfide: 81.0 pounds
Volatile Organic Compounds: 3,275.0 pounds
94172

2007-02-23
Exchanger leak
Cause: underdeposit corrosion

Followup: No

Notes: Leaking exchangers were removed from service. The metallurgy of the exchangers is being evaluated for upgrading.
Sulfur Dioxide: 14,881.0 pounds
Nitric Oxide: 247.0 pounds
Nitrogen Dioxide: 34.0 pounds
Methane: 297.0 pounds
Hydrogen Sulfide: 39.0 pounds
Hydrogen: 77.0 pounds
Ethane: 126.0 pounds
Propane: 152.0 pounds
Butene: 312.0 pounds
Butane: 32.0 pounds
Propylene: 255.0 pounds
n-Butane: 48.0 pounds
109951

2008-10-09
oil spill
Cause: The underground portion of a line that was suspected to be leaking was excavated to find the source of the leak. The leak was caused by external corrosion of the underground line. When the leak was found, the line was isolated and a clamp was installed to stop the leak. Approximately 1.45 barrels of mixed gas oil (MGO) leaked to the soil from the underground line. Of the 1.45 barrels that leaked, 23.4 gallons migrated over the soil and into a nearby sewer drain. A vacuum truck picked up the pooled oil from the soil and sewer drain.

Followup: No

Notes: When the leak was found, the line was isolated and a clamp was installed to stop the leak. Approximately 1.45 barrels of mixed gas oil (MGO) leaked to the soil from the underground line. Of the 1.45 barrels that leaked, 23.4 gallons migrated over the soil and into a nearby sewer drain. A vacuum truck picked up the pooled oil from the soil and sewer drain. This release is BRQ.
Mixed Oil Products: 45.7 gallons
108256

2008-08-21
oil spill
Cause: Corrosion- external corrosion of underground line.

Followup: No

Notes: Leaking underground line was excavated to find leak source. Vacuum trucks picked up pooled oil.
Gas Oil: 382.0 gallons
107613

2008-07-30

Cause: Leak in a line was due to corrosion.

Followup: No

Notes: Amount of oil released is unknown. Amount was below the reportable quantity.

107010

2008-07-06
Pulldown line leak/FLARE-Flare 5,17,29
Cause: Leak was discovered on the pulldown line for the Product Separator Drum at the Powerformer Unit. Initial findings indicate that the leak was caused by internal corrosion of the weld in a stagnant area of the line.

Followup: No

Notes: The line could not be isolated from the drum, so the decision was made to shutdown the unit in order to stop the leak. The line was completely depressured. During the process of shutting down the unit, flaring occurred from the #5, 17, and 19 flared. No reportable quantities were exceeded as a result of the flaring. Regular air monitoring was conducted during this event. The spool piece that leaked was replaced with a straight piece of pipe to eliminate the stagnant area in the line. Reportable quantities for benzene and flammable vapors was exceeded.
Volatile Organic Compounds (VOCs): 949.0 pounds
Benzene: 21.0 pounds
Toluene: 54.0 pounds
Xylene: 17.0 pounds
Methane: 4.0 pounds
Hydrocarbon: 26.0 pounds
Nitric Oxide: 36.0 pounds
Nitrogen Dioxide: 6.0 pounds
105896

2008-05-23

Cause: OIl was found on the piping insulation on the 1st stage suction line to the GLA-2X gas compressor at the PCLA-2. Two pinhole leaks had developed in the line due to corrosion.

Followup: No

Notes: Once the extent of the leaks was evaluated, a detailed plan was developed to safely shutdown the compressor and replace the leaking portion of the line. Unit rate were cut in order to perform this work, and several Refinery units were required to adjust rates in order to accommodate the downtime. Gas was completely diverted from the compressor ending the release.
Flammable Vapor: 976.1 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs): 205.0 pounds
106022

2008-05-16
Depropanizer feed line
Cause: A leak was discovered on the Depropanizer feed line at the #3 Light Ends Unit. Caused by underdeposit corrosion due to residual acid attack

Followup: No

Notes: The leak was isolated and the line depressured.
Isobutane: 2,034.7 pounds
Butane: 271.3 pounds
Propane: 406.9 pounds
103634

2008-03-04
Sewer line leak
Cause: external corrosion of the carbon steel line

Followup: No

Notes: The line was clamped to stop the leak. A plan is being devloped to replace line to prevent future leaks. In the interim the line will be minimly used. When in use it will be monitored to lessen leakage probability, when not in use pipe will be drained.Note-two incident descriptions are described;one including some oil spille
Primary Sludge: 166.0 pounds
103551

2008-03-02
pipe line
Cause: dead end piping corroded out

Followup: No

Notes: DEQ report stated the pipe line was in close proximity to the rail line and could potentially pose danger to the public.

103091

2008-02-14
Leak/feed line leak
Cause: Corrosion/corrosion leak occurred through a 3/8 hole on the #2 feed inlet pip

Followup: No

Notes: The tower that the corroded pipe led to was shut down and filled with water to stop residual hydrocarbon vapors from leaking out of the hole. The hole was plugged.An engineered leak box was installed on the line.
Propane: 116.0 pounds
Butane: 6,483.0 pounds
n-Butane: 1,298.0 pounds

Isopentane: 412.0 pounds
n-Pentane: 37.0 pounds
2,3-Dimethylbutane: 38.0 pounds
2-Methylpentane: 10.0 pounds
2,4-Dimethylpentane: 48.0 pounds
2,2,3-Trimethylbutane: 2.0 pounds
2-Methylhexane: 9.0 pounds
2,3-Dimethylpentane: 20.0 pounds
3-Methylhexane: 3.0 pounds
Isooctane: 523.0 pounds
2,5-Dimethylhexane: 37.0 pounds
2,3,3-Trimethylpentane: 48.0 pounds
2,4-Dimethylhexane: 35.0 pounds
2,3,4-Trimethylpentane: 244.0 pounds
2,3,3-Trimethylpentane: 295.0 pounds
2,3-Dimethylhexane: 43.0 pounds
2-Methylheptane: 2.0 pounds
4-Methylheptane: 2.0 pounds
3,4-Dimethylhexane: 9.0 pounds
3-Methylheptane: 1.0 pounds
2,2,5-Trimethylhexane: 88.0 pounds
n-Nonane: 117.0 pounds
Isobutylene: 6.0 pounds
Cyclopentane: 15.0 pounds
102274

2008-01-15
None Reported
Cause: Corrosion

Followup: No

Notes: Report from Exxon Mobile surrounding the leaking incident stated that the leaking exchanger was blocked out and removed from service. It also stated the exchanger bundle would be inspected and repaired as appropriate.
119077

2009-10-28
transfer piping
Cause: Failure of transfer piping crude tankage from corrosion.

Followup: No

Notes: RQ exceeded. Pipe isolated and replaced. Contaminated soil removed.
Oil: 88.2 pounds
118829

2009-10-17
transfer piping
Cause: Failure of line of transfer piping from gasoline tankage to loading line due to corrosion at the air-soil interface of piping.

Followup: No

Notes: RQ exceeded. Isolated line with blind installation. Replaced with new piping and special program has been initiated to emphasis piping that may be subject to air-soil interface corrosion. Contaminated soil removed. The refinery letter misstates that the accident occurred on 08/21/09. The following RQs were exceeded: xylene, toulene, ethylbenzene, napthalene, benzene, n-hexane, cyclohexane, 2,2,4-trimethylpentane, VOCs, oil to soil, and flammable vapor.
Xylene: 24,759.0 pounds
Toluene: 14,845.0 pounds
Ethylbenzene: 4,024.0 pounds
Naphthalene: 1,527.0 pounds
Benzene: 2,521.0 pounds
n-Hexane: 9,525.0 pounds
Cyclohexane: 1,040.0 pounds
2,2,4-Trimethylpentane: 13,217.0 pounds
Volatile Organic Compounds (VOCs): 296,468.0 pounds
Flammable Vapor: 37,086.0 pounds
Oil: 57,330.0 pounds
117415

2009-08-21
insulated dead leg pipe
Cause: Leak from corrosion in insulated dead leg pipe.

Followup: No

Notes: Release is above RQs. Line isolated and insulation stripped from piping. A clamp was placed over leaking section. Contaminated soil removed. Long term solution is being determined.
Polycyclic Aromatic Hydrocarbons: 4.9 pounds
Oil: 168.0 pounds
113059

2009-03-02
A and B exchanger on #4 depropanizer
Cause: Hydrocarbon leak coming from one of two banks of exchangers of the #4 depropanizer. It is leaking from the shell side of the exchanger into the cooling tower water in the tube side of the exchanger. Leak was the result of unexpected corrosion of exchanger tubes.

Followup: No

Notes: RQ for propylene exceeded. Leaking exchangers isolated as soon as leak location determined. Tower was shut down and leaking tubes in overhead condensers were plugged to prevent further release.
Propylene: 165.0 pounds



111875

2009-01-07
pipe on Avenue F (between 7th and 8th Street)
Cause: Pipe on Avenue F between 7th and 8th Street was corroded. This led to a section of leaking pipe.

Followup: No

Notes: RQ exceeded. Leaking pipe was isolated and a temporary clamp was placed over the leak. The line will be permanently repaired. Vacuum trucks were used to collect material, and the contaminated soil is in the process of being removed. No groundwater impacts were expected.
Oil: 310.8 pounds
127174

2010-10-21
Alkytation Unit
Cause: The Baton Rouge Refinery (BRRF) Alkylation Unit experience a release. This release did not exceed RQ. However a second release occurred at the Refinery's Mixed Gas Oil tanks within the same 24 hours, and the sum of these emissions exceed RQ for flammable vapor. The Alky Unit leak is described in this report. Please see report for Louisiana State Police Incident #10-06175 for a description of the MGO tank release as well as the sum of the day's emissions. A leak in the body of an orbit valve in Alky Unit's Stratco Train was discovered. The valve is located on the purge refrigeration gas system. Upon discovery, the purge gas system was depressured and shut down to end the release.

Followup: No

Notes: Stracto Train's purge gas system was shut down. The corroded carbon steel valve has been replaced with a stainless steel valve. Release was BRQ. Exxon exceeded the reportable quantity threshold for flammable vapors when combined with a second release that occurred within 24 hours. The second release had the LDEQ number 127179. Combined 1,563 pounds for both incidents. Although this individual incident is BRQ, the sum of the two incidents are RQ.
Flammable Vapor: 706.0 pounds
123517

2010-05-16
Tank 1523
Cause: Oil found floating on water inside the Tank 1523 firewall in Anchorage Tank Farm. Oil leaked from tank roof drain during heavy rain. A corroded leg sleeve was determined to be the leak source. Secondary cause noted as storms.

Followup: No

Notes: Tank roof drain blocked and absorbent boom deployed around tank. Vacuum truck used to remove floating oil. Leg sleeve will be repaired before returning tank to service. 3.9 barrels of oil was released which is RQ.
Oil: 163.8 gallons
123630

2010-04-28
underground crude oil line
Cause: Oil was found pooled on the ground, and excavation revealed that an underground crude oil line leaked due to underground corrosion. 56.8 gallons of oil was released which is above RQ.

Followup: Yes

Notes: Failed line excavated & clamped, and contaminated soil removed.
Crude Oil: 56.8 gallons
121915

2010-03-05
Tank Transfer Piping
Cause: Underground corrosion caused a failure in the line of tank transfer piping.

Followup: No

Notes: RQ. When the leak was discovered, the underground line was isolated via block valves. The failed line was CLAMPED to prevent further leaks. Contaminated soil was removed to confirm the leak source. Refinery letter also states that there were "no offsite impacts, injuries, or complaints as a result of this incident."
Oil: 2,742.6 gallons
Volatile Organic Compounds (VOCs): 20,236.0 pounds
Polycyclic Aromatic Hydrocarbons: 22.0 pounds
140446

2012-06-13

Line 679 in the Gas Collection area
Cause: There was a leak in line 679 in the Gas Collection area, due to unanticipated corrosion of the piping. Identified the corrosion was not noted in previous inspection and a clamp was used until the pipe could be replaced.

Followup: No

Notes: The line was isolated to be de-pressured, and all hydrocarbon material was removed from the line. A clamp was installed on the line to prevent recurrence, and other areas of the piping have been inspected for potential corrosion. Other areas of the line have been inspected for potential corrosion. Piping areas identified to have reduced wall thickness will be replaced by the end of 2012. The RQ for Flammable vapor is 1,000 pounds, and the RQ for VOCs is 5,000 pounds.
Volatile Organic Compounds (VOCs): 9,887.5 pounds
Flammable Vapor: 9,887.5 pounds
156786

2014-06-14
Tank Suction Line
Cause: During routine rounds, a leak was discovered on a tank suction line due to external corrosion.

Followup: No

Notes: Upon discovery the spill source was isolated and the affected pipe was removed from service. A vacuum truck was used for soil remediation. The affected piping will be replaced.
Oil: 67.2 gallons