SOUTHERN STAR CENTRAL GAS PIPELINE, INC

Incident Narrative

ON 2/26/2021 SOUTHERN STAR CENTER GAS PIPELINE (SSCGP) AND A CONTRACTOR WERE PERFORMING AN INLINE INSPECTION ON LINE FM IN JASPER COUNTY, MISSOURI. AFTER THE INLINE INSPECTION TOOL (PIG) WAS LAUNCHED, IT BECAME LODGED IN THE LINE. AT 10:04 AM, THE PIG DISLODGED AND A PIPELINE RUPTURE OCCURRED. THE MAINLINE VALVES ON LINE FM WERE ALREADY CLOSED DUE TO THE INLINE INSPECTION. THE KICKER VALVE AT THE PIG LAUNCHER WAS BEING MANNED AT THE TIME AND WAS IMMEDIATELY CLOSED TO STOP GAS FLOW. LINE FM WAS COMPLETELY BLOWN DOWN BY 10:07 AM. TWO SSCGP EMPLOYEES WERE PRESENT AT THE RUPTURE LOCATION WHEN THE RUPTURE OCCURRED AND ONE EMPLOYEE WAS INJURED. OTHER SSCGP AND CONTRACTOR EMPLOYEES ASSISTED AND LOCAL EMERGENCY RESPONDERS WERE NOTIFIED AT 10:05 AM AND WERE ON SITE WITHIN 10 MINUTES. ONE SSCGP EMPLOYEE WAS TRANSPORTED TO THE LOCAL HOSPITAL BY AMBULANCE AND WAS ADMITTED TO THE HOSPITAL FOR HIS INJURIES. ANOTHER SCCGP EMPLOYEE WAS TAKEN TO THE HOSPITAL BY CAR AS A PRECAUTION AND WAS EXAMINED AND RELEASED WITH NO OBSERVED INJURIES. THE EMPLOYEE THAT WAS ADMITTED WAS RELEASED FROM THE HOSPITAL ON 2/28/2021. REPAIRS ON LINE FM WERE COMPLETED AND THE LINE WAS RETURNED TO SERVICE ON 3/1/2021 AT 7:30 AM. NOTE: EDITS CONTAINED IN THE FINAL SUPPLEMENT INCIDENT REPORT ARE IN: PART C, 3B, 3E, 3G, 3H, C6 PART D, 7D, 7E, 13A PART G7- INCORRECT OPERATION PLEASE REFER TO THE CONTRIBUTING FACTORS, CAUSAL FACTORS, AND ROOT CAUSES CONTAINED IN THE KIEFNER REPORT DATED SEPTEMBER 17, 2021.