ENTERPRISE PRODUCTS OPERATING LLC

Incident Narrative

ON 1/15/2021 AT 14:30, ENTERPRISE WAS NOTIFIED OF A POSSIBLE LEAK ON THE L67 PIPELINE. AT 15:30, ENTERPRISE CONFIRMED THE LEAK AND THE PIPELINE WAS SHUTDOWN AND ISOLATED. AT 16:35, IT WAS DETERMINED THAT THE LEAK WOULD MEET NRC REPORTING CRITERIA BASED ON ANTICIPATED COST TO REPAIR THE PIPELINE. THE PIPELINE WAS EXPOSED AND FOUND TO BE LEAKING ON THE BOTTOM. A CLAMP WAS INSTALLED AND THE PIPELINE WAS PUT BACK INTO SERVICE. THE TEMPORARY CLAMP WAS REMOVED AND REPLACED WITH A NEW 900-FOOT SECTION OF PIPELINE ON 2/28/2021. THE NEW SECTION OF PIPELINE REPLACEMENT INCLUDES THE LEAK FILED ON PHMSA ACCIDENT REPORT #20210090-35059 ON 2/23/2021. METALLURGICAL ANALYSIS DETERMINED THE PIPE HAD A PINHOLE LEAK THAT RESULTED FROM EXTERNAL PITTING CORROSION. AN AREA WITH DAMAGED COATING ADJACENT TO 6 O'CLOCK POSITION DEVELOPED A PIT, WHICH SUBSEQUENTLY PROGRESSED INTO A PINHOLE. CORROSION OR NOTABLE MATERIAL LOSS WAS NOT OBSERVED AWAY FROM THE LEAK. THE EXTERNAL CORROSION DEPOSITS PRIMARILY CONTAINED IRON OXIDES INDICATING THAT THE PIPE EXTERNAL AT THE LEAK WAS EXPOSED TO WATER OR MOISTURE. PART A 4 TIME UPDATED. PART E 2 MOP PRESSURE UPDATED. THE RRC WAS NOTIFIED ON 1/15/2021 AT 17:00, INCIDENT # 2332 48-HOUR UPDATE TO NRC PERFORMED ON 1/17/2021 AT 12:08 - 1296215