DTE GAS COMPANY
gas_transmission Incident — — March 15, 2018
Incident Information
| Incident Date | March 15, 2018 |
| Operator | DTE GAS COMPANY |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 42.54188, -83.56061 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | MALFUNCTION OF CONTROL/RELIEF EQUIPMENT |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $0 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
ON MARCH 15, 2018, AN ESD OCCURRED AT MILFORD COMPRESSOR STATION RESULTING IN A RELEASE OF NATURAL GAS AT VENT VALVE 1008. VENT VALVE 1008 WAS LOCKED CLOSED TO PREVENT RECURRENCE DURING INVESTIGATION. MILFORD COMPRESSOR STATION HAS ADEQUATE PROTECTION IN THE EVENT OF AN ESD. ON MARCH 23, 2018, IT WAS DETERMINED THAT THE SOLENOID CASING THAT CONTROLS THE VALVE HAD AN ACCUMULATION OF WATER. THE SEAL PROTECTING THE SOLENOID WAS NOT FULLY SEALED. WATER WAS REMOVED AND THE SEAL WAS FIXED. ADDITIONAL INVESTIGATION IS IN PROGRESS TO REVIEW ELECTRONICS OF THE SYSTEM. UPON FURTHER INVESTIGATION, IT WAS FOUND THAT AN EXCESS OF CURRENT TO THE CONTROL MODULE CAUSED THE SOLENOID CONTROLLING VALVE 1008 TO FAIL. THE CONTROL MODULE WAS REPLACED AND UPGRADED. DTE CONTROL MAINTENANCE TESTED ALL THE REMAINING CONTROL MODULES FOR VENT VALVES AT MILORD. IT WAS FOUND THAT ALL THE CURRENT READINGS WERE WITHIN THE OUTPUT LIMITS OF THE MODULES BEFORE PUTTING THE STATION BACK INTO SERVICE. RESULTS OF TESTING AND REPLACEMENT OF MODULES HAS BEEN SUPPLIED TO THE MICHIGAN PUBLIC SERVICE COMMISSION. DTE GAS BELIEVES THAT WITH THESE ACTIONS, WE DO NOT EXPECT A REPEAT OCCURRENCE. MILFORD COMPRESSOR STATION WAS PUT BACK INTO SERVICE ON APRIL 12, 2018.
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.