NATURAL GAS PIPELINE CO OF AMERICA (KMI)
gas_transmission Incident — — May 28, 2017
Incident Information
| Incident Date | May 28, 2017 |
| Operator | NATURAL GAS PIPELINE CO OF AMERICA (KMI) |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 32.40753, -94.42981 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $500 |
| Emergency Response | $300 |
| Other Costs | $0 |
Location Map
Incident Narrative
ON MAY 28, 2017 AT 15:50, THE LOCAL FIRE DEPARTMENT NOTIFIED GAS CONTROL THAT NGPL STATION 304 WAS VENTING NATURAL GAS. NGPL OPS PERSONNEL WERE DISPATCHED TO STATION 304 AND VERIFIED AT 16:00 THAT A RELIEF VALVE IN STATION 304 WAS VENTING. OPS PERSONNEL IMMEDIATELY ADJUSTED THE RELIEF PILOT AND PROCEEDED TO THE UNIT PANEL AND SHUT DOWN THE UNIT. THE RELIEF VALVE STOPPED VENTING AT 16:05. THE ROOT CAUSES OF THIS INCIDENT WERE DUE TO THE RELIEF VALVE PILOT NOT BEING SECURED PROPERLY CAUSING THE RELIEF VALVE TO PREMATURELY OPEN AND A PROGRAMMING ERROR IN THE STATION'S UNIT CONTROL LOGIC CAUSING THE UNIT TO REMAIN ONLINE WHILE THE RELIEF VALVE ACTIVATED. CORRECTIVE ACTIONS INCLUDED PHYSICAL INSPECTION OF THE RELIEF VALVE AND A SET POINT RESET. THE STATION'S UNIT LOGIC WAS REPROGRAMED TO SHUT DOWN THE UNIT WHEN A RELIEF VALVE ACTIVATES.
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.