DIXIE PIPELINE COMPANY LLC
hazardous_liquid Incident — — October 23, 2021
Incident Information
| Incident Date | October 23, 2021 |
| Operator | DIXIE PIPELINE COMPANY LLC |
| Commodity | HVL OR OTHER FLAMMABLE OR TOXIC FLUID WHICH IS A GAS AT AMBI |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 32.34055, -85.09300 |
Cause
| Cause | MATERIAL FAILURE OF PIPE OR WELD |
| Subcause | ENVIRONMENTAL CRACKING-RELATED |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $300,000 |
| Emergency Response | $10,000 |
| Other Costs | $0 |
Location Map
Incident Narrative
"ON MAY 23, 2021 AT 09:05, ENTERPRISE HOUSTON CONTROL CENTER (HCC) RECEIVED A CALL FROM A LANDOWNER IN SEALE, ALABAMA REPORTING ICE ON THE GROUND WITH A SMELL. AT 10:44 ENTERPRISE CONFIRMED A LEAK AT MP 23.625 ON THE PIPELINE RIGHT-OF-WAY AND IMMEDIATELY ISOLATED THE SECTION OF PIPELINE. ENTERPRISE DETERMINED THE EVENT TO BE REPORTABLE AT 11:20 AND REPORTED TO THE NRC AT 11:59. THE PIPELINE WAS PIGGED TO REMOVE PRODUCT FROM THE PIPELINE AND PURGED WITH NITROGEN. A 70 FEET SECTION OF MAINLINE PIPE WAS CUT AND REMOVED FROM SERVICE. A NEW SECTION OF MAINLINE PIPE WAS PRESSURE TESTED, INSTALLED, PURGED AND RETURNED TO SERVICE. A 19.27 FEET OF MAINLINE PIPE CONTAINING THE LEAK LOCATION WAS EXAMINED BY METALLURGICAL ANALYSIS. THE RESULTS OF THE METALLURGICAL ANALYSIS INDICATED THAT THE LEAK OCCURRED AT A COLONY OF INTERLINKED, INTERGRANULAR CRACKS CONSISTENT WITH HIGH PH STRESS CORROSION CRACKING (SCC) WERE LOCATED IN THE BASE METAL, NEAR THE SEAM WELD, AT THE 9:24 ORIENTATION. A LIKELY CONTRIBUTING FACTOR TO THE FAILURE/CRACKING WAS RESIDUAL STRESSES FROM THE SEAM WELDING PROCESS BASED ON THE PRESENCE OF THE CRACKING ADJACENT TO THE SEAM WELD. THE PHMSA ACCIDENT DIVISION WAS NOTIFIED ON 10/23/2021 AT 12:00. THE 48-HOUR UPDATE TO THE NRC TOOK PLACE ON 10/25/2021 AT 09:16 # 1320339."
About This Pipeline Incident
Pipeline incident data is reported to the Pipeline and Hazardous Materials Safety Administration (PHMSA). All significant incidents involving fatalities, injuries, or property damage over $50,000 must be reported.