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Motiva Enterprises (2719), Convent

Releases of Ammonia

LDEQ Accident Number
Accident Date
Point Source(s) Notes Amount of Release
No LDEQ Reported

HGU WWTU Flare EPN 85D-105
Cause: see notes. Flame outage on flare causes release.

Followup: No

Notes: Under investigation - no remedial actions specified

HGU WWTU Flare EPN 85D-105
Cause: upset of natural gas flow to the flare results in a pilot outage

Followup: No

Notes: Under investigation - no remedial actions specified

HGU WWTU Flare (EPN 85D-105)
Cause: malfunctioning level controller let to Pilot outage on flare due to liquid extinguishing the flare.

Followup: No

Notes: Cold weather led to salt disposition on a level gauge that suppressed the high level alarm on the flare knock out drum. Letter states that remedial action will be taken, but does not specify whic

HGU WWTU Flare (EPN 85D-105)
Cause: see notes. Pilot outage on flare

Followup: No

Notes: Under investigation. Affirmative defense letter.

SRU-4 thermal reactor; TGTU-3
Cause: Level 2 fire at Sulfur Recovery Unit (SRU)no. 4's thermal reactor due to failure of the SRU-4 thermal reactor vessel. Tail Gas Treating Unit (TGTU) No. 3 upset during firefighting efforts causing additional emissions. Fenceline monitoring indicated no offsite impacts. Exceeded RQs.

Followup: Yes

Notes: In-house fire dept and ERT worked to extinguish fire, reduced operating rates on units producing acid gas or rich amine and to distribute the acid gas flow to other operation SRU/TGTUs during firefight to safely shut down SRU/TGTU-4.
2.0 pounds

LUI West Tank Farm, Tank 20D-2
Cause: Waste water containing ammonia salts and phosphoric acid leaked through a roll-off box and a secondary-containment unit that had a small hole. The box and the collapsible secondary-containment unit were themselves inside an earthen containment. Both the primary and secondary containment systems failed in this case. The incident occurred at the LUI West Tank Farm, Tank 20D-2.

Followup: No

Notes: Letter did not indicate that any remediation activities had occurred, nor that the containment units had been replaced or repaired.