ENTERPRISE PRODUCTS OPERATING LLC
hazardous_liquid Incident —
Incident Information
| Report Date | — |
| Operator | ENTERPRISE PRODUCTS OPERATING LLC |
| Commodity | — |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 41.61521, -91.40825 |
Cause
| Cause | EQUIPMENT FAILURE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
AT 09:30 AM ON 1-4-19, THE IOWA CITY CONTROL ROOM OPERATOR ENTERED A START COMMAND TO THE IOWA CITY MAINLINE (ML) UNIT #1 PUMP. AT 09:33:48 THE PUMP BEGAN TURNING AND THEN AT 09:34:07 A TURBINE SHUTDOWN WAS INITIATED BY A SEAL FAIL PRESSURE SWITCH ALARM. A VAPOR CLOUD WAS RELEASED AS A RESULT OF THE SEAL FAILURE. AT 09:34:13 THE VAPOR CLOUD IGNITED. AT 09:34:30 A STATION EMERGENCY SHUT DOWN (ESD) WAS INITIATED BY THE IOWA CITY CONTROL ROOM OPERATOR. UPON INVESTIGATION IT WAS DETERMINED THAT THE OUTBOARD SEAL THAT FAILED WAS IMPROPERLY ASSEMBLED DURING THE PREVIOUS REPAIR. THE STATIONARY (CARBON FACE) RETAINER/ STUB SLEEVE HOLES WERE NOT LINED UP WITH PINS IN GLAND AND WAS OUT OF SQUARE BY ~0.050 IN. THIS OUT OF SQUARE CONDITION CAUSED UNEVEN LOADING AND ACCELERATED WEAR OF THE CARBON FACE. TO PREVENT REOCCURRENCE, THE SEAL SUPPLIER WAS NOTIFIED OF THE CARTRIDGE ASSEMBLY ISSUE, AND THE PUMP IS BEING MACHINED TO ALLOW FOR INSTALLATION OF TANDEM INBOARD AND OUTBOARD SEALS THAT WILL PERFORM BETTER AT CONTAINING POSSIBLE FUTURE PRODUCT RELEASES. 48 HOUR NRC UPDATE #1234730
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.