GULFSTREAM MANAGEMENT & OPERATING SERVICES,LLC

Incident Narrative

ON 11/29/2020 AT THE GULFSTREAM TIGER BAY M&R STATION, THERE WAS A COMBINED RELEASE OF 4.2 MMCF OF GAS (2.1 MMCF FROM WILLIAMS AND 2.1 MMCF FROM THE CUSTOMER). WILLIAMS DETERMINED THE RELEASE WAS DUE TO THE FAILURE OF A MOONEY FLEXIBLE ELEMENT REGULATOR COUPLED WITH A RELIEF VALVE THAT FAILED TO RESET ONCE THE PRESSURE DROPPED BELOW THE SET POINT. THE CUSTOMER CAME OFFLINE, AT WHICH TIME, THE MOONEY REGULATOR FAILED TO LOCKUP DUE TO INTERNAL DAMAGE TO THE FLEXIBLE ELEMENT (WEAR AND TEAR: SEEING FLEXIBLE ELEMENT LIFE HAS SHORTENED FROM 6 MONTHS TO 2 MONTHS). THE RELIEF VALVE BEGAN TO VENT BUT DID NOT RESET ONCE THE PRESSURE DECREASED BELOW THE SET POINT. THE RELIEF VALVE CONTINUED TO VENT UNTIL THE RESPONDING TECHNICIAN ARRIVED AND SECURED THE FACILITY. WHEN THE RELIEF WAS TORE DOWN TO BE REBUILT AND PUT BACK IN SERVICE, A METAL PIN WAS FOUND TO BE WEDGED IN THE RELIEF AND WAS NOT ALLOWING IT TO RESET. THE VALVE MANUFACTURER WAS CONTACTED TO ASK IF IT WAS AN ALIGNMENT PIN LEFT IN THERE BY MISTAKE BUT THEY HAVE INDICATED THEY DO NOT USE ANYTHING LIKE THAT DURING MANUFACTURING. IT IS UNKNOWN AS TO WHERE THE PIN MAY HAVE COME FROM.