NATURAL GAS PIPELINE CO OF AMERICA (KMI)

Incident Narrative

ON SEPTEMBER 24, 2020 THE NATURAL GAS PIPELINE COMPANY OF AMERICA, LLC (NGPL) 20-INCH INDIAN BASIN PIPELINE EXPERIENCED AN IN-SERVICE FAILURE RESULTING IN A PIPELINE RUPTURE WITH NO FIRE. 00:44 - MEASUREMENT TECH 1 WAS CALLED OUT ON LOW-PRESSURE ALARM AT PIN 1753 OXY INDIAN BASIN. 01:20- MEASUREMENT TECH 1 ARRIVED ON SITE PIN 1753 AND STARTED INVESTIGATING. MEASUREMENT TECH 1 PUT HIS PRECISION GAUGE ON MAINLINE AND SAW LINE PRESSURE DROPPING DRASTICALLY. CONSEQUENTLY, CALLED LEAD TECH AND BOTH LOGGED ON CONCENTRATOR (SCADA) TO LOOK OVER MAINLINE PRESSURES USING METER STATION DATA. 01:54 - MEASUREMENT SUPERVISOR RECEIVED CALL FROM LEAD TECH REGARDING A POTENTIAL LINE LEAK AT INDIAN HILL STATION. AFTER CONFIRMING OTHER STATION PRESSURES ALONG THE LINE VIA SCADA, MEASUREMENT SUPERVISOR ADVISED TECHS TO START SHUTTING IN STATIONS. 01:55 - OXY INDIAN BASIN PIN 1753 SHUT -IN IB-4 MAINLINE VALVE ALSO SHUT. 02:20 - FASKEN NORTH INDIAN HILLS PIN 37613 SHUT-IN. 03:12 - EMERGENCY RESPONSE LINE (ERL) CALL NOTIFICATIONS INITIATED PER COMPANY PROCEDURES TO DISCUSS THE POTENTIAL INCIDENT. 03:19A- IB-3 SHUT IN. 04:00 - DCP FUEL PIN 1791 SHUT IN. 04:22 - OPERATIONS FOUND IB-1 OPEN AND HOLDING PRESSURE. 04:40- IB-2 FOUND CLOSED. 04:50 - HOLLY PIN 44836 MANUAL ISOLATION VALVE WAS SHUT IN; MEASUREMENT TECH 1 OPENED IT UP TO MONITOR LINE PRESSURE BETWEEN THAT SEGMENT- VALVES DOWN STREAM OF METER WERE LOCKED GOING TO CUSTOMER. 05:20- DCP BIG EDDY PIN 25776 - SHUT IN. 05:53- CALL TO NRC INITIATED (#1288123). 06:00- NGPL PERSONAL ON SITE CONFIRMED THE RUPTURED ON THE INDIAN BASIN PIPELINE. 06:18-ERL+ CALL NOTIFICATION INITIATED PER COMPANY PROCEDURES TO DISCUSS THE RUPTURE INCIDENT. ON SEPTEMBER 28, PIPE WAS REPLACED AND COVERED. THE METALLURGICAL REPORT CONCLUDED THAT THE INDIAN BASIN INCIDENT ORIGINATED IN THE FUSION AREA OF THE DC-ERW LONG SEAM FROM CORROSION ON THE EXTERNAL SURFACE OF THE PIPE IN AN AREA OF COATING DISBONDMENT. METALLURGICAL FAILURE ANALYSIS REPORT WAS COMPLETED AND PROVIDED TO PHMSA ON 11/12/2020. CURRENTLY NGPL IS WAITING APPROVAL FROM PHMSA FOR THE REMEDIAL WORK PLAN (RWP) THAT WAS SENT ON 5/28/2021 IN ACCORDANCE WITH CPF NO. 2-2020-001-CAO, ITEM #13. NOTE: ON OCTOBER 1, 2020, NGPL RECEIVED CORRECTIVE ACTION ORDER (CAO) CPF NO. 2-2020-001-CAO FROM PHMSA. NGPL IS COMPLYING WITH THE REQUIRED CORRECTIVE ACTIONS IN THE CAO.