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Valero (26003), Norco
LDEQ Accident Report
| Accident # | 97515 |
| State Police # | 07-03581 |
| Accident Date | 2007-06-29 |
| Report Date | 2007-07-06 |
| Follow-up Date | 0000-00-00 |
| Follow-up: | Yes |
Pollutants Released
| Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
| Hydrogen Sulfide | 1 h 0 m | primary seal: Floating Roof Tank 150-13 | NO | NO | NO | 625.0 pounds |
Accident Classified As:
Cause of Problem: Human Factors
: Operator/s failed in draining the drum to the slop system, as all liquids (rather than just the sour water) were drained and coker gas entered the floating roof rerun tank, T-150-13. The pressurized gas bubbled through the tank carrying slop oil onto the roof and released to the atmosphere.
Discharge Preventable - Yes
Notes/Remedial Actions
Gases leaving the tank were dispersed into the atmosphere. Slop oil on the roof was recovered and returned to the process. The roof was cleaned and the coker off gas knock out drum drain valve was closed immediately upon discovery.
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