NATIONAL FUEL GAS SUPPLY CORP
gas_transmission Incident — — February 14, 2022
Incident Information
| Incident Date | February 14, 2022 |
| Operator | NATIONAL FUEL GAS SUPPLY CORP |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 41.40089, -80.28235 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $546 |
| Emergency Response | $1,049 |
| Other Costs | $0 |
Location Map
Incident Narrative
NATIONAL FUEL GAS SUPPLY CORPORATION (""NATIONAL FUEL"") IS REPORTING THIS NATURAL GAS INCIDENT AS A RESULT OF AN UNINTENTIONAL RELEASE OF NATURAL GAS ESTIMATED AT GREATER THAN THREE (3) MILLION CUBIC FEET, WHICH OCCURRED AT A REGULATOR STATION IN OTTER CREEK TOWNSHIP, MERCER COUNTY, PA. ON MONDAY, FEBRUARY 14, 2022, AT APPROXIMATELY 3:02 PM, NATIONAL FUEL DISCOVERED A VENTING RELIEF VALVE AT STATION OCM-2534 (KITCH RD). AT APPROXIMATELY 3:50 PM, THE PRIMARY REGULATOR WAS ISOLATED WHICH STOPPED THE UNINTENTIONAL RELEASE OF GAS FROM THE RELIEF VALVE. AT APPROXIMATELY 4:23 PM THE PRESSURE RECORDING CHART WAS REMOVED FOR ANALYSIS. AT 5:11 PM, NATIONAL FUEL NOTIFIED THE NRC AFTER REVIEW OF THE PRESSURE CHART INDICATED THE THREE (3) MILLION CUBIC FEET REPORTING THRESHOLD COULD POTENTIALLY BE EXCEEDED. THE FINAL GAS LOSS AMOUNT WAS DETERMINED AFTER A COMPREHENSIVE REVIEW AND USING CONSERVATIVE CALCULATIONS. THE PROBABLE CAUSE OF THE INCIDENT WAS EQUIPMENT FAILURE OF A PRESSURE REGULATOR CAUSED BY DEBRIS WHICH PREVENTED THE REGULATOR FROM SEATING AND THE RELIEF VALVE TO VENT AS DESIGNED. THERE WERE NO INJURIES, PROPERTY DAMAGE, OR AFFECTED PUBLIC/WILDLIFE AS A RESULT OF THIS EVENT.
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.