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Marathon Ashland Petroleum (3165), Garyville

Releases in 2007

LDEQ Accident Number
Accident Date
Point Source/Release CauseNotes
101968

2007-12-29
Point Source(s):
Unit 34 termal oxidizer
Unit 34 thermal oxidizer

Pollutant(s):
Hydrogen Sulfide - BRQ
Sulfur Dioxide - BRQ
Cause of Problem: Equipment Design

The Amine Unit 47 shutdown when amine circulation was lost because of a control valve failing to close.
The shutdown of Unit 45 Sulfur Recover unit reduced the acid gas (hydrogen sulfide-H2S) processing capacity by 1/3. To reduce the acid gas Marathon implemented "sulfur shedding procedures", involving reducing feed desulfurization units and the Coker . A manual bypass valve was opened to restore circulation. Sulfur dioxide limit (250 ppm) on Unit 34 thermal oxidizer and hydrogen sulfide limit 160ppm on the fuel gas system were exceeded.
100086

2007-10-10
Point Source(s):


Pollutant(s):
Hydrogen Sulfide - 0
Cause of Problem: Process Upset

The packing in a lean amine bypass control valve blew out releasing amine and sour hydrogen gas to the atmosphere. To repair the valve the unit required depressurizing to the south flare
A high level incident investigation is underway
99754

2007-09-26
Point Source(s):
South Flare

Pollutant(s):
Sulfur Dioxide - 1 pounds
Olefins - 2 pounds
Cause of Problem: Process Upset

Shell off gas compressors had to shutdown and gas was put into the fuel gas system. Fuel gas system overpressured and relieved to flare.
Claims emission was below RQ.
98913

2007-08-24
Point Source(s):
North Flare; weep holes on the HF Acid Shelter relief valve and the Main Fractionator Bottom relief valve

Pollutant(s):
Hydrocarbon - 794 pounds
Olefins - 19 pounds
Hydrogen Flouride - 0 pounds
Nitrogen Oxide - 277 pounds
Cause of Problem: Equipment Failure

Unit 27 substation failed and shut down HF Alkylation, Butamer and Amine Treating. Failure of the bellows in Unit 27 Main Fractionator Bottoms relief valve
Claims emission was below RQ.
98913A

2007-08-24
Point Source(s):
North Flare; weep holes on the HF Acid Shelter relief valve and the Main Fractionator Bottom relief valve

Pollutant(s):
Hydrocarbon - 794 pounds
Olefins - 19 pounds
Hydrogen Flouride - 0 pounds
Nitrogen Oxide - 277 pounds
Cause of Problem: Equipment Failure

Unit 27 substation failed and shut down HF Alkylation, Butamer and Amine Treating. Failure of the bellows in Unit 27 Main Fractionator Bottoms relief valve
Claims emission was below RQ.
98775

2007-08-18
Point Source(s):
North Flare

Pollutant(s):
Sulfur Dioxide - 199 pounds
Nitrogen Oxide - 10
Volatile Organic Compounds - 0
Cause of Problem: Process Upset

The Crude Overhead Compressor overpressured and was relieved to the North Flare
Claims emission was below RQ. Installing pressure indicators on the first stages of both overhead compressors which will be routed to the control room for iproved monitoring.
98486

2007-08-08
Point Source(s):
Heavy Vacuum Gas Oil Pumparound Pump

Pollutant(s):
Heavy Vacuum Gas Oil - BRQ
Cause of Problem: Seal or Gasket

HVGO Pumparound Pump had a seal failure and leaked oil to the pump pad which goes to the oily water sewer.
Claims emission was below RQ. Pump will be taken out of service to replace the pump seal.
98487

2007-08-07
Point Source(s):
FCCO Cooling Tower and the North Flare

Pollutant(s):
Highly Reactive Volatile Organic Compounds (HRVOCs) - 81 pounds
Volatile Organic Compounds (VOCs) - 310 pounds
Hydrogen Sulfide - 4 pounds
Carbon Monoxide - 0 pounds
Sulfur Dioxide - 7 pounds
Cause of Problem: Equipment Failure

The PGC Aftercooler trim cooler was found leaking hydrocarbons into the FCCO cooling tower.
Claims emission was below RQ.
No LDEQ Number Available

2007-07-31
Point Source(s):
Coker conveyor belt west of refinery

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

Friction from a failed roller-bearing caused fire at the coker conveyor belt
Claims emission was below RQ.
No LDEQ Number Available

2007-07-31
Point Source(s):
Coker conveyor belt west of refinery

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

Friction from a failed roller-bearing caused fire at the coker conveyor belt
Claims emission was below RQ.
97250

2007-06-20
Point Source(s):
Leaking flange downstream of control valve on the fractionator reflux line in the HF Alkylation Unit

Pollutant(s):
Hydrogen Flouride - 1 pounds
Propane - 4 pounds
Isobutane - 19 pounds
n-Butane - 3 pounds
Pentane - 0 pounds
Cause of Problem: Piping or Tubing

Flange leak
Claims emission was below RQ.
96829

2007-06-06
Point Source(s):
Truck near Marathon Avenue and Hwy 61

Pollutant(s):
Asphalt - 2 gallons
Cause of Problem: Human Factors

Upon leaving asphalt terminal driver noticed that the top hatch of his tank truck was not properly secured.
Claims emission was below RQ.
96834

2007-06-06
Point Source(s):
Three pinhole leaks in the Unit 28 Butane Isomerization Regen line and North Flare

Pollutant(s):
Butane - 978 pounds
Cause of Problem: Piping or Tubing

same leak that was clamped earlier in the year
Claims emission was below RQ.
96604

2007-05-30
Point Source(s):
Dock 1

Pollutant(s):
Oil - 2 pounds
Cause of Problem: Piping or Tubing

The oily water sewer sump backed up due to the ballast water line eing out of service for maintenance. Release into Mississippi
Claims emission was below reportable quantities. Containment boom was in place already under the dock due to previous problem with the ballast water line.
96496

2007-05-23
Point Source(s):
North Flare

Pollutant(s):
Volatile Organic Compounds - 82 pounds
Cause of Problem: Process Upset

HS Alkylation Unit Depropanizer bottoms relief valve opened. Failure of 3 way valve.
Claims emission was below RQ. Emission contained iso butane and propane. A design and engineering package has been approved for a pressure indication device upstream of the three way control valve to be installed in 2008. 80
96397

2007-05-18
Point Source(s):
North Flare

Pollutant(s):
Volatile Organic Compounds - 142 pounds
Cause of Problem: Piping or Tubing

Alky Butane Splitter/Chill Water Condesnser had a tube leak.
Claims emission was below RQ. Emission contained iso butane and propane.
96056

2007-05-09
Point Source(s):
Crude ship MT Fortius moored at Marathon's Dock 1

Pollutant(s):
Low sulfur diesel - 78 gallons
Cause of Problem: Piping or Tubing

The crude ship is believed to have been venting at the time of the release
MPC requested a copy of the shp's inert gas pressure system readings for the cargo tanks and the request was refused by the ship's representative. DEQ's field interview form for this incident tells a different story - it was a leak in the Ballast Water Line.
95890

2007-05-03
Point Source(s):
abandoned pipe in Tank Farm

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

Abandoned pipe that was once used for circulating crude oil.
Severe weather for 2 days delayed clean up efforts.
95890A

2007-05-03
Point Source(s):
abandoned pipe in Tank Farm

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

Abandoned pipe that was once used for circulating crude oil.
Severe weather for 2 days delayed clean up efforts.
95719

2007-04-27
Point Source(s):
Ballast Water Line at Dock 1

Pollutant(s):
Process Water - 9 pounds
Cause of Problem: Piping or Tubing

Untreated process water in the line is routed back to the refinery for treatment at the wastewater treatment plant. Leak allowed discharge into the Mississippi River
Claims emission was below RQ. Analysis results of water sample showed 7ppm total suspended solids; 26.3 ppm oil and grease; 164.4 ppm Total Organic Carbon and 26,100 ug/l of BTEX
95665

2007-04-26
Point Source(s):
North Flare

Pollutant(s):
Sulfur Dioxide - 40 pounds
Hydrocarbon - 15 pounds
Cause of Problem: No Information Given

Fuse was blown causing FCCU to shut down
Claims emission was below RQ. Hydrocarbon contains 9 pounds of highly reactive hydrocarbons.
95653

2007-04-25
Point Source(s):
North Flare

Pollutant(s):
Sulfur Dioxide - 76 pounds
Cause of Problem: Process Upset

Scheduled drum swap caused Drum 1 to pressure up. The relief valve on the Fractionator Overhead line relieved to the flare.
Claims emission was below RQ.
95029

2007-03-30
Point Source(s):
South Flare

Pollutant(s):
Sulfur Dioxide - 5 pounds
Cause of Problem: Power Failure

Electrical failure caused change in valve position to emergency "dump" on the Gas Oil Hydrotreating unit.
Claims emission was below RQ.
95029A

2007-03-30
Point Source(s):
South Flare

Pollutant(s):
Sulfur Dioxide - 5 pounds
Cause of Problem: Power Failure

Electrical failure caused change in valve position to emergency "dump" on the Gas Oil Hydrotreating unit.
Claims emission was below RQ.
94921

2007-03-26
Point Source(s):
Dock 4 floating barge

Pollutant(s):
Dock Ballast Water - 100 gallons
Cause of Problem: Human Factors

A tug boat was moving barges from Dock 3 and accidentally ran into the Dock 4 floating barge. Operators noticed Dock 4 was listing backward and small holes were discoverved near the water line.
The ballast water contains small concentration of corrosion inhibitor. The inhibitor contained dilute concentrations of sodium nitrate and sodium hydroxide. Estimated amount spilled reported by refinery is between 42 and 420 gallons. LDEQ reported 100 gallons spilled. The total amount of inhibitor originally contained in the ballast water was less than 14 lbs. = 4 lbs sodium nitrate, 0.14 lbs sodium hydroxide. After 7 years these compounds would most likely be inert.
94388

2007-03-06
Point Source(s):
South Flare

Pollutant(s):
Sulfur Dioxide - 0 pounds
Hydrogen Sulfide - 0 pounds
Cause of Problem: Maintenance/Procedures

Compressors in Unit 22 Sturates Gas Plant shutdown for maintenance and gas feed to Unit decreased. As a result temperature of gas feed cooler effluent decreased in turn increasing amount condensed.
Claims emission was below RQ. Claims alternative (shutting down the compressor and a subsequent Unit shutdown) would have allowed for a more substantial release of emissions to the environment.
94400

2007-02-27
Point Source(s):
Marine Dock 1

Pollutant(s):
Benzene - 0 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs) - 4 pounds
Volatile Organic Compounds (VOCs) - 440 pounds
Compressed Flammable Gas - 2,036 pounds
Cause of Problem: Human Factors

The piping on a newly installed liquid separation vessel was incorrectly piped
Root Cause Analysis is being performed. DEQ Field Interview Report states that the facility failed to have control device in place to ensure that the newly installed piping was correctly piped prior to loading.
No LDEQ Number Available

2007-02-27
Point Source(s):
Marine Dock 1

Pollutant(s):
Benzene - 0 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs) - 4 pounds
Volatile Organic Compounds (VOCs) - 440 pounds
Compressed Flammable Gas - 2,036 pounds
Cause of Problem: Human Factors

The piping on a newly installed liquid separation vessel was incorrectly piped
Root Cause Analysis is being performed. DEQ Field Interview Report states that the facility failed to have control device in place to ensure that the newly installed piping was correctly piped prior to loading.
93979

2007-02-14
Point Source(s):
North Flare and Heater/Boiler CAP

Pollutant(s):
Sulfur Dioxide - 716 pounds
Volatile Organic Compounds (VOCs) - 35 pounds
Cause of Problem: Equipment Failure

Recycle compressors shutdown in the Gasoline Desulfurization Unit
Stopped hydrocarbon carryover to Amine Scrubber which reduced pressure in the Amine Flash Drum.
93924

2007-02-12
Point Source(s):
South Flare

Pollutant(s):
Sulfur Dioxide - 11 pounds
Cause of Problem: Equipment Failure

Two steam boilers shutdown unexpectedly causing steam pressure facility wide to drop. The Crude Unit experienced an upset due to the loss of steam pressure and flared off of the Splitter Overhead receiver.
No Information Given. DEQ claims emission was below RQ.
93826

2007-02-08
Point Source(s):
Gas Oil Hydrotreating Unit

Pollutant(s):
Sulfur Dioxide - 62 pounds
Compressed Flammable Gas - 834 pounds
Cause of Problem: Piping or Tubing

While the unit was starting up, a crack was noticed. Cause of crack is under investigation.
Claims emission was below RQ. No Information Given
90321

2007-01-03
Point Source(s):
North Flare

Pollutant(s):
Hydrogen Sulfide - BRQ
Hydrocarbon - BRQ
Cause of Problem: Equipment Failure

Claims emission was below RQ. No Information Given