DENBURY GULF COAST PIPELINES, LLC — Hazardous liquid — incident on 2023-10-02

Hazardous liquid incident in Not Within a Municipality, YAZOO County, MS. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 0.39 CO2 (CARBON DIOXIDE) released, $370 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.

Report number: 20230258.

Operator ID: 32545.

Reported incident date: 10/2/2023 14:00.

Location detail: 37.04

Cause detail: THREADED CONNECTION/COUPLING FAILURE

Cause detail: ON 10/2/2023 AT 14:00, DENBURY OPERATING PERSONNEL ARRIVED AT TINSLEY METER STATION, OBSERVED A CO2 LEAK COMING FROM A THREADED 1" HAMMER UNION BETWEEN THE KICKER BYPASS VALVE AND RECEIVER. FIELD MANAGEMENT WAS NOTIFIED. PER DENBURY'S OM0213, THE LEAK WAS CLASSIFIED AS NON-HAZARDOUS AND SCHEDULED TO BE REPAIRED AS SOON AS PRACTICAL. THE DENBURY CONTROL CENTER DID NOT RECEIVE AN ALARM OR IDENTIFY ANY LOSS OF PRESSURE OR PRODUCT FROM THE LOCATION OF THE LEAK DUE TO THE SMALL SIZE OF THE LEAK AND IT BEING ON AN ISOLATED SECTION OF THE PIG RECEIVER PIPING. CONSIDERING THE VOLUME OF CO2 BEING RELEASED, DENBURY DETERMINED THIS LEAK TO BE NON-SIGNIFICANT, THEREFORE A NATIONAL RESPONSE CENTER (NRC) NOTIFICATION WAS NOT REQUIRED. DENBURY PERSONNEL ARRIVED ONSITE ON 10/17/2023 TO BEGIN REPAIRING THE LEAK. THE SYSTEM WAS RETURNED TO NORMAL OPERATION AFTER THE LEAK WAS REPAIRED ON 10/17/2023 AT 10:00.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EQUIPMENT FAILURE — THREADED CONNECTION/COUPLING FAILURE.

PHMSA indexed costs: $371 reported total cost, $156.751 in 1984 dollars, $386.029 in current-year dollars.

PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.