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Marathon Ashland Petroleum (3165), Garyville

Releases in 2006

LDEQ Accident Number
Accident Date
Point Source/Release CauseNotes
92878

2006-12-24
Point Source(s):
Conservation vents Tank 55-5(EQI No. 44-74/EQT No. 104)

Pollutant(s):
Butane - 135 pounds
Cause of Problem: Instrument Failure

Tank 55-5 high pressure equal to 2 inches of water column caused the tank conservation vents to open to the atmosphere. The pressure transmitter failed giving a false low pressure in tank 55-5.
Currently under investigation. BELOW REPORTABLE QUANTITY.
91854

2006-11-03
Point Source(s):
Relief Valve 56-PSV-7008

Pollutant(s):
Distillate - 14 pounds
Cause of Problem: Maintenance/Procedures

Computer Process Controls going on at this time are believed to have been the initial cause of the Relief Valve relieving to the atmosphere.
Does not have an additional report of the actual totals of what was spilled. Steam up on relief valve to minimize emissions. BELOW REPORTABLE QUANTITY.
91732

2006-10-28
Point Source(s):
Unit 37 Cooling Tower

Pollutant(s):
Sodium Hypochlorite - 200 pounds
Cause of Problem: Piping or Tubing

PVC suction line pipe broken (s06-3392) from the cooling system tower releasing 200 gallons of Sodium Hypochlorite Solution into the surrounding soil.
Sodium Hydrochlorite tank in Unit 37 Tower area. The material was cleaned as soon as possible.
91306

2006-10-12
Point Source(s):
No Specific emission point associated with this spill

Pollutant(s):
Sodium Hydrochlorite - 2,976 pounds
Cause of Problem: Piping or Tubing

A 3/4 inch PVC hose fitting failed on the pump suction from the temporary sodium hydrochlorite tank/under investigation
Currently under investigation.
No LDEQ Number Available

2006-10-08
Point Source(s):
Alky Cooling Tower (EIQ 61-74/ EQT 043)

Pollutant(s):
Butane - 40 pounds
Cause of Problem: Piping or Tubing

A pin hole leak was found on the on the Alky C4 Overhead Condenser, which affected the allky cooling tower.
BELOW REPORTABLE QUANTITY.
90703

2006-09-15
Point Source(s):
Butamer Trim Cooler (28-1305-01) had a leak into FCCU Cooling Tower (EIQ 123-91/EQT 049)

Pollutant(s):
Isobutane - 316 pounds
Cause of Problem: Piping or Tubing

The Butamer Trim Cooler was found to have a pin-hole leak and was leaking into the cooling water, which affected the FCCU Cooling Tower.
Unit shut down to locate the source of the leak, but no remedial action was taken to prevent reoccurrence. BELOW REPORTABLE QUANTITY.
89533

2006-07-26
Point Source(s):

South Flare (EQI No. 69-74/EQT 160)

Pollutant(s):
Sulfur Dioxide - 26 pounds
Hydrogen Sulfide - 0 pounds
Cause of Problem: Equipment Failure

The Absorber Reboiler was leaking hot gas into the Hot Oil Surge Drum causing it to overpressure.
BELOW REPORTABLE QUANTITY.
88771

2006-06-21
Point Source(s):

Propylene Cooling Tower (EQI No. 123-91/EQT 49)

Pollutant(s):
Propylene - 639 pounds
Propane - 213 pounds
Cause of Problem: Equipment Failure

The C3/C4 condenser was leaking product into the cooling water.
The cooling system associated with propane tower is being evaluated.
88629

2006-06-14
Point Source(s):

Propylene Cooling Tower (EQI No. 123-91/EQT 49)

Pollutant(s):
Propylene - 493 pounds
Propane - 164 pounds
Cause of Problem: Equipment Failure

The C3 Product cooler was leaking on the cooling water side.
None.
88512

2006-06-10
Point Source(s):
flaring from fuel gas mix drum
Flaring from Unit 21 Absorber and North Flare (EQI No. 83-74/EQT 162)

Pollutant(s):
Volatile Organic Compounds (VOCs) - 2,353 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs) - 10 pounds
Sulfur Dioxide - 0 pounds
Volatile Organic Compounds (VOCs) - 14 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs) - 7 pounds
Cause of Problem: Process Upset

Shell, Norco, had an unexpected shutdown of one of their units which processes Marathon Petroleum Company off gas, MPC had to flare excess off-gas/ fuel gas during this time.
BELOW REPORTABLE QUANTITY.
87670

2006-05-08
Point Source(s):

Leaking flange gasket in distilate hydrotreater

Pollutant(s):
Hydrogen - 20 pounds
Nitrogen - 9 pounds
Hydrogen Sulfide - 0 pounds
Cause of Problem: Seal or Gasket

During startup of the distillate hydrotreatmer, a flange gasket on a manway of the recycle gas amine scrubber was found leaking.
BELOW REPORTABLE QUANTITY.
85928

2006-02-19
Point Source(s):
The North Flare (EIQ No. 83-74/EQT 162)

Pollutant(s):
Propylene - 2 pounds
Cause of Problem: Process Upset

During maintenance a valve was opened to the flare to reduce the amount of ethanes contaminating the purity of the propylene.
BELOW REPORTABLE QUANTITY.
85091

2006-01-11
Point Source(s):

The North Flare (EIQ No. 83-74/EQT 162)

Pollutant(s):
Olefins - 79 pounds
Volatile Organic Compounds - 252 pounds
Sulfur Dioxide - 211 pounds
Cause of Problem: Equipment Failure

The uninterpretable power supply failed, causing a shutdown of the FCC unit.
84997

2006-01-06
Point Source(s):
Flange near the Crude Bottoms Pump in the Crude Unit
Flange near the Crude Bottoms Pump in the Crude Unity

Pollutant(s):
Sulfur Dioxide - 2,039 pounds
Volatile Organic Compounds - 121 pounds
Cause of Problem: Equipment Failure

While preparing the Crude Unit for Turnaround activities a fire occurred. It is assumed that the bolts on the flange of a crude pump opened and products was released. The exact cause is still under investigation, but it is assumed that one of the isolation valves were leaking.
MPC assumed the entire amount of the sulfur present was combusted even though there was substantial product left on the cement of the unit.