"ONEOK NGL PIPELINE, LLC"
hazardous_liquid Incident — — September 9, 2020
Incident Information
| Incident Date | September 9, 2020 |
| Operator | "ONEOK NGL PIPELINE, LLC" |
| Commodity | HVL OR OTHER FLAMMABLE OR TOXIC FLUID WHICH IS A GAS AT AMBI |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 38.36916, -97.83204 |
Cause
| Cause | INCORRECT OPERATION |
| Subcause | PIPELINE OR EQUIPMENT OVERPRESSURED |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $150 |
| Other Costs | $1,000 |
Location Map
Incident Narrative
"THE 11313 PIPELINE REACHED 109% OF MOP (787 PSI VERSUS 720 MOP) DURING A PIPELINE START-UP RESULTING IN A PRESSURE RELIEF VALVE AT THE 313 JUNCTION RELIEVING TO ATMOSPHERE. THE PRESSURE EVENT WAS THE RESULT OF ONEOK PIPELINE CONTROL OPENING THE 313 PIPELINE'S INLET VALVE (V26) IN ERROR WITH AN UPSTREAM PRESSURE EXCEEDING THAT SPECIFIED IN THE OPERATING PROCEDURE. IN ADDITION, VALVE V26 DID NOT RE-CLOSE QUICKLY ENOUGH, UPON DETECTING HIGH PRESSURE, TO STOP THE PRESSURE INCREASE PRIOR TO THE RELIEF VALVE ACTIVATING. IN IMMEDIATE RESPONSE TO THE EVENT, THE SCADA SCREEN HAS BEEN UPDATED TO PROVIDE ADDITIONAL CLARITY. ADDITIONALLY, A PROJECT IS UNDERWAY TO RELOCATE V26'S PRESSURE SWITCH TO THE UPSTREAM SIDE OF THE VALVE THUS PREVENTING THE VALVE FROM OPENING UNDER THIS SCENARIO."
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.