ENTERPRISE CRUDE PIPELINE LLC

Incident Narrative

ON 03/26/2020 AT 08:30 CT CRUDE OIL WAS NOTICED IN AN AREA OF ONGOING EXCAVATION AT LYSSY STATION. AFTER FURTHER EXCAVATION, IT WAS DETERMINED ON 3/27/2020 THAT TANK LINE 3803 WAS LEAKING. 1 BBL OF CRUDE LEAKED FROM THE LINE AND HAS BEEN CLEANED UP. ON 3/29/2020, A CLAMP WAS INSTALLED OVER THE LEAK. FIELD INSPECTION AND AUTOMATED UT C SCAN OF THE PIPE ON 8/19/2020 DID NOT INDICATE CORROSION ON THE SECTIONS OF PIPE ADJACENT TO THE LEAK. ON 11/24/2020 THE LEAKING PIPE WAS CUT OUT FOR METALLURGICAL ANALYSIS AND NEW PIPE WAS INSTALLED IN ITS PLACE. THE LINE WAS RETURNED TO SERVICE ON 12/18/2020 AT APPROXIMATELY 13:48 CT. THE WELD THAT FAILED WAS A TRANSITION WELDS (0.344"" WALL THICKNESS TO 0.500"" WALL THICKNESS) INSTALLED ON TANK LINE 3803. DURING THE INVESTIGATION, ENTERPRISE EXCAVATED AND EXAMINED OTHER TRANSITION WELDS INSTALLED AT THE ROAD CROSSING. NO CIRCUMFERENTIAL CRACKING SIMILAR TO WHAT WAS OBSERVED AT THIS WELD WAS NOTED IN ANY OF THESE OTHER TRANSITION WELDS. TO MINIMIZE RECURRENCE, ONE OF THE WELDS WAS REPAIRED WITH A TYPE B SLEEVE DUE TO TWO AREAS OF UNDERCUT AND INCOMPLETE FILL OF THE GIRTH WELD. NO OTHER REPAIRS WERE NECESSARY ON THE REMAINING WELDS. NRC: #1275510 ON 04/16/2020 AT 12:31 CT DUE TO CLEANUP COSTS EXCEEDING $50K. 48 HOUR NRC: #1275560 ON 4/17/2020 AT 10:48 CT. TEXAS RAILROAD COMMISSION WAS CALLED 03/27/2020 AT 11:42 CT. CASE #2171