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ExxonMobil Chemical Plant (286), Baton Rouge

Releases in 2006

LDEQ Accident Number
Accident Date
Point Source/Release CauseNotes
92930

2006-12-28
Point Source(s):
#4 Mox Boiler

Pollutant(s):
Natural Gas - 19,000 pounds
Ethane - 0
Methane - 0
Propylene - 0
Cause of Problem: Under Investigation

Their #4 Mox boiler has a mechanically operated valve that opens at high pressure. High pressure in the line caused it to open, but they do not know what caused the high pressure yet.
It was determined that Ethane, Methane, and Propylene were the chemicals involved in the fire. They believe they exceeded the RQ for VOC's.
92424

2006-12-05
Point Source(s):
analyzer diaphragm

Pollutant(s):
Syngas - 1,114 pounds
Cause of Problem: Equipment Failure

An analyzer diaphragm blew out causing material to be released.
They blocked in the analyzer. They will leave it blocked in and will get it repaired
No LDEQ Number Available

2006-12-05
Point Source(s):
No information given.

Pollutant(s):
- 0
Cause of Problem: No Information Given

Leak occurred at plant. No RQs were exceeded.
91967

2006-11-09
Point Source(s):
F5 incinerator
No information given.

Pollutant(s):
Flammable Gas - 0
- 0
Cause of Problem: Equipment Failure

A piece of equipment, the F5 incinerator that the POX acid gas normally goes to, shut down for an unknown reason. ExxonMobil is investigating whether the shutdown could be due to an instrumentation
Flammable gas was released at 2268 lbs per hour. Amount of flammable gas released is unknown.
91843

2006-11-02
Point Source(s):
furnace tube

Pollutant(s):
Smoke - 0
Cause of Problem: Piping or Tubing

A furnace tube started leaking, causing excessive smoke. They are assuming they exceeded their permitted opacity.
Smoking stopped. Amount of smoke released is unknown.
91788

2006-10-31
Point Source(s):
Pump seal

Pollutant(s):
Benzene - 0
Cause of Problem: Seal or Gasket

A pump seal is leaking.
They put water spray on to keep it confined to the area. Amount of benzene released is unknown.
91582

2006-10-23
Point Source(s):
F furnace

Pollutant(s):
Smoke - 0
Cause of Problem: Piping or Tubing

A tube leak in F furnace is causing excessive smoking from furnace stack. They expect it is exceeding the 20% opacity that is permitted.
Amount of smoke released is unknown.
91198

2006-10-08
Point Source(s):
Reactor

Pollutant(s):
Ethylene - 0
Isobutane - 0
Cause of Problem: Equipment Failure

A reactor over-pressured and PSV lifted to air. Reactor was emptied to another vessel.
Intial report says it may have exceeded RQs. Amount of ethylene and isobutane released is unknown.
91179

2006-10-06
Point Source(s):
Oxo high-pressure process unit

Pollutant(s):
Carbon Monoxide - BRQ
Hydrogen - BRQ
Carbon Dioxide - BRQ
Cause of Problem: Piping or Tubing

There is a Syn Gas leak from the Oxo high-pressure process unit... A piping leak was in the line... It resulted in a momentary flash fire that was put out instantly.
The leak was isolated and the gas was sent to flare as they are depressurizing the unit for shut down to make repairs. It was initially released to air, but as they depressurize the unit it goes to flare. The pressure has been reduced and now they have a very small residual leak. No RQs were exceeded.
91100

2006-10-04
Point Source(s):
Exchanger

Pollutant(s):
- 0
Cause of Problem: Equipment Failure

Exchanger leak into the cooling tower and then the air.
Exchanger was removed from service.
90956

2006-09-29
Point Source(s):
vent valve

Pollutant(s):
Flammable Gas - 1,000 pounds
Cause of Problem: No Information Given

They discovered that GUP 107 vent valve was partially open to a vent into the atmosphere.
They secured the release at 640. The computer trend history shows that it may have started on sept 28, 2006 at 1800 hours. Amount of flammable gas released is over 1000 pounds. An exact amount released is unknown.
90675

2006-09-14
Point Source(s):
Propane safety valve

Pollutant(s):
Propane - 23,000 pounds
Volatile Organic Compounds (VOCs) - 0
Cause of Problem: Process Upset

Propane safety valve released due to compressor upset.
They expected to exceed RQ for benzene and VOCs. They returned it back to normal conditions. Amount of VOC's released is unknown.
90216

2006-08-23
Point Source(s):
No information given.

Pollutant(s):
Gas Oil - 70 pounds
Cause of Problem: Piping or Tubing

Spill went onto pavement then into sewer system and water treatment. One of the piping components sprung a leak. It was blocked in.
No reportable quantities were exceeded.
89726

2006-08-04
Point Source(s):
Pump

Pollutant(s):
- 0
- 0
Cause of Problem: No Information Given

They had a leak on a pump. When they isolated that leak, they weren't using the pump so sent to flare. They expected to exceed RQ. They were trying to fix the leak. Just SPOC report.
89599

2006-07-30
Point Source(s):
flange

Pollutant(s):
Butylene - 212 pounds
Nitric Oxide - 0
Nitrogen Oxide - 0
Cause of Problem: Seal or Gasket

Found a pinhole leak in a flange.
Secured it by shutting pump down and blocking in the release.
89593

2006-07-28
Point Source(s):
Compressor

Pollutant(s):
Ethylene - 121 pounds
Nitrogen Oxide - 65 pounds
Nitrogen Dioxide - 7 pounds
Cause of Problem: Process Upset

Compressor tripped off.
It was diverted to secure and took it out of the flare.
89354

2006-07-18
Point Source(s):
tank

Pollutant(s):
Flammable Gas - 1,000 pounds
Cause of Problem: Equipment Failure

A nitrogen blanket on a tank was found not to be in place.
Blanket was put back in place to secure. Over 1000 pounds of flammable gas is released. Exact amount of flammable gas released is unknown.
88052

2006-05-20
Point Source(s):
wastewater drier

Pollutant(s):
Volatile Organic Compounds (VOCs) - 0
Cause of Problem: Process Upset

Bypass of a control device when wastewater drier vented to the atmosphere instead of to the flare system.
Amount of VOC's released is unknown.
87945

2006-05-18
Point Source(s):
tanks

Pollutant(s):
- 0
- 0
- 0
- 0
Cause of Problem: Equipment Failure

They have five tanks that are releasing vapors. One tank is a floating roof tank that is malfunctioning. The other four have some sort of malfunction as well. They are investigating the cause.
Not sure if any releases will reach RQ
87811

2006-05-12
Point Source(s):
Product line from Isopropyl alcohol unit

Pollutant(s):
Benzene - 0
Toluene - 0
Isoprene - 0
Cause of Problem: Equipment Failure

A product line from the isopropyl alcohol unit in the chemical plant was leaking. Vapors were being released to the atmosphere.
ExxonMobil located the leak. They were trying to determine what options they had to stop the leak. Amount of chemicals released is unknown.
87556

2006-05-02
Point Source(s):
Flare

Pollutant(s):
Smoke - 0
Cause of Problem: No Information Given

The only information given by the state police report is that there was a smoking flare that seemed likely to exceed the refinery's limits.
The state police report calls this an "opacity report" that was made in order to satisfy the DEQ reporting requirements. The LABB file does not contain the LDEQ report.
86795

2006-03-09
Point Source(s):
Exchanger
Methane relief valve on POX heat-up-gun header

Pollutant(s):
Methane - 56,811 pounds
- 217 pounds
- 100 pounds
- 1,000 pounds
Cause of Problem: No Information Given

On 3/2706 they disocvered they had an on-going release of methane. A meter indicated the release started on 3/9/06. Methane was released at 3120 lbs/day. Methane was released at 3120 pounds per day.
88524

2006-02-01
Point Source(s):
Baton Rouge Turbine Generator exhaust stack S-85

Pollutant(s):
- 81 pounds
- 726 pounds
Cause of Problem: No Information Given

On 1/29/06 the BRTG unit was started up after turnaround. A fuel gas meter had been blocked in for recalibration during the turnaround. This meter is used to calculate the proper amount of nitrogen oxide suppression stream. After startup, this meter remained blocked in and was providing erroneous data to the controller, which resulted in the improper amount of nitrogen oxide suppression steam being supplied. This led to a permit deviation on the 25 PPM limit for the gas turbine generator, a regulatory deviation for the meter being unavailable, and the exceedence of RQs for nitrogen oxide and nitrogen dioxide. The flow meter unblocked and was returned to service. The report said that the incident was under investigation. Procedures would be modified as applicable.
85116

2006-01-12
Point Source(s):
Pump seal on processing unit

Pollutant(s):
Benzene - 18 pounds
Toluene - 3 pounds
Xylene - 0 pounds
C6 Paraffins - 90 pounds
Cause of Problem: Seal or Gasket

While making rounds on the unit, Aromatics operations personnel discovered a pump seal leaking to concrete containment and to the sewer.
Operations shut down the pump and blocked it away from the process stopping the leak. The pump seal will be replaced.