DAKOTA GASIFICATION COMPANY
hazardous_liquid Incident — — June 15, 2022
Incident Information
| Incident Date | June 15, 2022 |
| Operator | DAKOTA GASIFICATION COMPANY |
| Commodity | CO2 (CARBON DIOXIDE) |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 48.39749, -102.90155 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | DEFECTIVE OR LOOSE TUBING OR FITTING |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $3,365 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
PRIMARY SEAL FAILED CAUSING CO2/H2S TO VENT TO SEAL GAS TO THE FLARE UNTIL FERRULE FAILED AND TUBING BECAME DISCONNECTED. PUMP SUCTION & DISCHARGES VALVES WERE CLOSED. SMALL AMOUNT OF GAS THEN RELEASED TO ATMOSPHERE UNTIL PRESSURE WAS LOW ENOUGH FOR GAS TO TURN SOLID VERY LITTLE WAS VENTING THEREAFTER. THE BUILDING H2S MONITORS WERE IN ALARM FOR 35 MINUTES THEN CLEARED. THE FLARE REMAINED LIT AND AT SET TEMPERATURE FOR DURATION. 1/2"" TUBING FERRULE WAS REPLACED AND VENT LINE WAS PLACED IN SERVICE OPENED TO THE FLARE. SEAL WAS SUBSEQUENTLY REPLACED ON 1/20/23 UNDER WORK ORDER #41497885. IT WAS DETERMINED THAT THE SEAL FLUSH LINES WERE MISSING ORIFICES. THE SEAL SHOWED SIGNS OF DRY RUNNING ON THE INNER SEAL WHICH INDICATES AN ISSUE WITH THE FLUSH. THE LACK OF ORIFICES WOULD ACCOUNT FOR THE DRY RUNNING SEEN ON THE INNER SEAL FACES. ORIFICES WERE INSTALLED AT THAT TIME. THE EXACT CAUSE FOR THE DISCONNECTED TUBING WAS NOT DETERMINED AT THE TIME OF THE INCIDENT.
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.