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Shell Facility (3462), St. Rose

Causal Factor: Weather

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

5-77 (St. Rose Flare)
Cause: A failure of the pilot gas regulator caused the pilot fuel gas pressure to drop below normal. Inclement weather (high winds) then caused to flare pilot to blow out. Reported weather conditions at the time were cloudy with 17mph winds

Followup: No

Notes: The equipment failure was unexpected and thus the discharge was not preventable. Actions were taken to override the regulator and restore the gas flow to the pilot and hence relight the flare pilot. During this time gas flow to the flare was minimized The flare pilot regulator that failed was replaced with a formal investigation to follow to see if further corrective actions are necessary. NOTE: Quantity of material released was calculated using a formula that conservatively assumes the flare is emitting at its average rate just prior to and during the event.

Flammable Gas: 1,048.0 pounds

Volatile Organic Compounds: 5,048.0 pounds

Tanks TK-8552 & TK -8553
Cause: Heavy rainfall from Hurricane Rita caused external floating roof of a tank to allow oil to overflow and be released from a tank drain valve into an earthen dike. Caused by an unexpected failure of a level control valve.

Followup: Yes

Notes: All information was taken from the 09/26/2005 DEQ Verbal Report. There was a preliminary written follow-up report on 09/29/2005 of a release of oil to land with no additional information. Data gathering, incident investigation & clean-up still ongoing with a final report to be issued after that is complete.
Oil: 210.0 gallons

No Information Given
Bypass Outfall 006
Cooling tower unit flare
GO-1 Elevated Flare/ OL 5 Elevated Flare
HCU Flare
Temporary Equipment - frac tanks, small internal combustion engines
Tank F 444
Tank F 466
Tank 463
Cause: Cooling tower unit is starting up much more slowly than usual due to extensie damage. Significant damage to all shrounds, fan, packing and sides. Normal unit startup falring may be extended over a longer time

Followup: Yes

Notes: This report follows the shut down due to Hurricane Katrina. They are just providing regular updates with a final follow-up report to follow after start-up activities are completed. Shell asserts this events meets the qualifications for an Upset Provision

81720, 81957, 83713

7-84 (OL-5 Ground Falre, FG-101); 6-84 (OL-5 Elevated Flare, FE-101); 1-90 (GO-1 Elevated Flare, FE602); 3-84 (Utilities East Flare, FE 501)
Cause: Due to shutdown and damages associated with Hurricane Katrina


Notes: The most significnt point source emissions were from the Elevated flare. The report does not include emissions from tanks, HCU Flare, Emergency Bypass Outfall and other equipment that was previously reported.
1,3-Butadiene: 29,849.0 pounds
Benzene: 16,219.0 pounds
Carbon Monoxide: 56,850.0 pounds
Ethylbenzene: 49.0 pounds
Ethylene: 262.0 pounds
Hexane: 2,492.0 pounds
Naphthalene: 5,183.0 pounds
Nitrogen Oxide: 69,648.0 pounds
Oil: 4,452.0 gallons
Particulate Matter: 14,857.0 pounds
Polycyclic Aromatic Hydrocarbons: 367.0 pounds
Styrene: 126.0 pounds
Sulfur Dioxide: 90,046.0 pounds
Toluene: 1,568.0 pounds
Volatile Organic Compounds (VOCs): 525,566.0 pounds
Xylene: 168.0 pounds

St. Rose Flare
Cause: The flare pilot was extinguished by a strong thunderstorm

Followup: No

Notes: Due to unexpecte equipment failure. The pilot was designed to withstand inclement weather conditions.An investigation will be conducted on the flare tip & pilot to understand why it went out. St. Rose flare is 200 feet tall.
Volatile Organic Compounds: 63.0 pounds

Storm Water Outfall 002 (unanticipated bypass)
Cause: During a storm operations personnel were unable to open the storm water outfall 002 due to unsafe condition of the platform which provides access to the control valve causing 22,000 gallons of storm water to overflow

Followup: No

Notes: Platform was tagged with a "Do Not Use Tag" prior to the storm for integrity concerns & to protect the operator. The gate valves could not be opened during the storm resulting in a bypass of a portion of water treatment facility (outfall 002). The platform has been inspected and repaired. Sample data will be reported with the February Discharge Monitoring Report.
Stormwater: 22,000.0 gallons