INDIANA GAS CO INC
gas_transmission Incident — — January 20, 2019
Incident Information
| Incident Date | January 20, 2019 |
| Operator | INDIANA GAS CO INC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 39.88979, -86.38370 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $100 |
| Emergency Response | $500 |
| Other Costs | $0 |
Location Map
Incident Narrative
VECTREN'S HENDRICKS COUNTY JUNCTION (HCJ) IS A NATURAL GAS TRANSMISSION PIPELINE WITH A COMPRESSOR STATION. HCJ IS A CENTRAL STATION THAT DIRECTS THE FLOW OF GAS INTO VECTREN'S NORTH, SOUTH & EAST SYSTEMS. DURING THIS GAS RELEASE INCIDENT, VECTREN'S SCADA DATA SHOWS THAT NONE OF THE PIPELINES WERE OVER-PRESSURIZED. THE PRESSURES AT THE TIME OF THE INCIDENT WERE WELL WITHIN NORMAL OPERATING PRESSURE RANGES. THIS GAS RELEASE INCIDENT WAS CAUSED BY MOISTURE FREEZING IN THE CONTROL LINE TO THE RELIEF VALVES CAUSING THEM TO OPEN AND VENT NATURAL GAS TO ATMOSPHERE. LOW PRESSURE LIMITS ON SCADA SYSTEM ALERTED GAS CONTROLLERS TO POTENTIAL ISSUE, WHO IN TURN NOTIFIED SUPERVISION, WHICH DISPATCHED 1ST RESPONDER PERSONNEL, WHO ARRIVED AND INVESTIGATED AND RECTIFIED THE SITUATION. TEMPORARY HEAT TAPE, INSULATION AND COVERING OVER THE SECTIONS OF THE CONTROL LINES AND SYSTEM COMPONENTS THAT WERE INVOLVED IN THE FREEZE-OFF WERE PERFORMED THAT WEEK. VECTREN WILL BE MAKING THESE MORE PERMANENT SOLUTIONS LATER THIS SPRING/SUMMER. NOTE: THIS IS INTENDED TO REPLACE REPORT NUMBER 20190015 - 31671 WHICH WAS MISTAKENLY SUBMITTED VIA THE FORM PHMSA F 7100.1.
About This Pipeline Incident
Pipeline incident data is reported to the Pipeline and Hazardous Materials Safety Administration (PHMSA). All significant incidents involving fatalities, injuries, or property damage over $50,000 must be reported.