ENTERPRISE PRODUCTS OPERATING LLC

Incident Narrative

"ON 11/17/2020 AT 08:08 CT, HOUSTON CONTROL CENTER (HCC) WAS CONTACTED BY AN ENTERPRISE TECHNICIAN REPORTING THAT A THIRD PARTY OBSERVED VAPOR AT LINN STATION. HCC SHUT DOWN THE PUMP UNITS WHILE THE TECHNICIAN WAS IN-ROUTE TO THE STATION. ONCE ON SITE AT 08:23 CT THE TECHNICIAN DISCOVERED FROST ON THE GROUND ABOVE LID 428 PIPELINE INSIDE THE STATION. AT 08:34 CT HOUSTON CONTROL CENTER REDUCED THE PRESSURE AND ISOLATED THE PIPELINE. AFTER DISCUSSIONS WITH OPERATIONS AND ONSITE TECHNICIAN, AT 09:40 CT IT WAS DETERMINED THAT THE ESTIMATED REPAIR COST WOULD LIKELY EXCEED THE $50,000 REPORTING THRESHOLD FOR NRC. AN ESTIMATED 25 GALLONS OF PROPANE LEAKED FROM THE PIPELINE WITH 50 BARRELS FLARED FROM THE LINE PRIOR TO THE NITROGEN PURGE ALLOWING FOR EXCAVATION AND REPAIR. ONCE EXCAVATED A STOPPLE SPLIT TEE FITTING WAS FOUND TO BE THE SOURCE OF THE LEAK AND WAS CUT OUT AND REPLACED WITH 40 FEET OF PIPE. THE PIPELINE WAS RETURNED TO SERVICE ON 11/22/2020 AT 17:00 CT. INITIAL CALL TO NRC WAS MADE ON 11/17/2020 AT 10:17 CT (NRC#1292452). THE CALL WAS MADE BASED ON REPAIR COST ESTIMATES EXCEEDING $50,000. 48HR UPDATE CALL TO NRC WAS MADE ON 11/19/2020 (NRC#1292636). THE UPDATE PROVIDED AN ESTIMATED PRODUCT RELEASE OF 25 GALLONS."