DTE GAS COMPANY
gas_transmission Incident — — December 30, 2018
Incident Information
| Incident Date | December 30, 2018 |
| Operator | DTE GAS COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 42.76447, -83.90302 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $15,000 |
| Emergency Response | $200 |
| Other Costs | $0 |
Location Map
Incident Narrative
DTE GAS DISPATCH RECEIVED A CALL FROM A CUSTOMER AT 00:22 OF AN ODOR IN AIR NEAR MAIN LINE VALVE 9 AT E. COHOCTAH RD. AND LUTZ RD. GAS DISPATCH CONTACTED GAS CONTROL AND THEY CONTACTED OPERATIONS. OPERATIONS SENT AN EMPLOYEE TO MLV 9 TO INVESTIGATE AND THE EMPLOYEE DISCOVERED THE RELIEF VALVE NORTH OF MLV 9 ON THE C LINE RELIEVING GAS TO ATMOSPHERE. THE TECHNICIAN CLOSED THE BLOCK VALVE UNDER THE RELIEF VALVE TO STOP THE BLOWING GAS. THE TECHNICIAN DID NOT OBSERVE ANY APPARENT PHYSICAL DAMAGE TO THE RELIEF. THE C LINE (MAOP 844) WAS MADE ""COMMON"" WITH THE A & B LINES (MAOP 811) AND THE ALARM POINT FOR THE C LINE WAS LOWERED TO 811 THUS PROTECTING THE C LINE UNTIL PERMANENT REPAIRS CAN BE MADE. THE CAUSE OF FAILURE (RELIEF VALVE) WAS DUE MATERIAL FAILURE. A NEW VALVE WAS INSTALLED ON 5/29/2019 AND THE C-LINE WAS RETURNED TO SERVICE WITH AN ALARM POINT AT 844 MAOP.
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.