ROCKIES EXPRESS PIPELINE LLC
gas_transmission Incident — — September 18, 2024
Incident Information
| Incident Date | September 18, 2024 |
| Operator | ROCKIES EXPRESS PIPELINE LLC |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 39.71310, -82.87000 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $1,190 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"THE COLUMBUS COMPRESSOR STATION, STATION FUEL GAS BLOWDOWN VALVE (BDV-4117) UNINTENTIONALLY OPENED AT 01:34AM ON 9/18/2024. WHEN THE TECHNICIAN ARRIVED ONSITE HE CLOSED THE VALVE. THE SOLENOID COIL ON SOLENOID VALVE (SV-4117) WAS FOUND TO BE FAULTY SO IT WAS REPLACED WITH A NEW SOLENOID VALVE AND COIL. THE FACILITY RESTARTED AT 12:21PM ET ON 9/18/2024. THE INCIDENT IS CURRENTLY UNDER INVESTIGATION SO A SUPPLEMENTAL REPORT WILL BE FORTHCOMING ONCE THE INVESTIGATION IS COMPLETE. SUPPLEMENTAL SUBMITTED 12/10/2025 UPDATED PART E, QUESTION 11 UPDATED PART G APPARENT CAUSE TO G6 EQUIPMENT FAILURE UPDATED NARRATIVE: INVESTIGATION IS COMPLETE AND TALLGRASS HAS UPDATED RELEVANT SECTIONS OF REPORT. THE FAILURE OF THE SOLENOID COIL RESULTED IN THE FAILURE OF THE SOLENOID VALVE, RESULTING IN THE OPENING OF THE BLOWDOWN VALVE (BDV-4117). TALLGRASS HAS COMPLETED ON THE FOLLOWING CORRECTIVE ACTIONS: 1. UPDATED THE CAUSE AND EFFECT AND PLC PROGRAMMING AT THE COMPRESSOR STATION TO REDUCE GAS RELEASE IN SIMILAR INSTANCES OF SOLENOID FAILURES. TALLGRASS IS WORKING ON THE FOLLOWING CORRECTIVE ACTIONS: 1. UPDATING AN ENGINEERING STANDARD TO ENSURE APPROPRIATE PROCESSES ARE IN PLACE TO IDENTIFY VALVES THAT COULD LEAD TO LARGE RELEASE OF GAS TO ATMOSPHERE IF THEY FAIL OPEN 2. UPDATING THE SCADA POINT LIST REVIEW SOP, AS NEEDED, TO DETERMINE THE APPROPRIATE CALLOUT ALERT FOR THE CONSEQUENCE LEVEL OF EQUIPMENT FAILURE"
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.