CHEVRON MIDSTREAM PIPELINES LLC
hazardous_liquid Incident — — July 25, 2014
Incident Information
| Incident Date | July 25, 2014 |
| Operator | CHEVRON MIDSTREAM PIPELINES LLC |
| Commodity | HVL OR OTHER FLAMMABLE OR TOXIC FLUID WHICH IS A GAS AT AMBI |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 29.97634, -90.46974 |
Cause
| Cause | CORROSION FAILURE |
| Subcause | EXTERNAL CORROSION |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $515,262 |
| Emergency Response | $0 |
| Other Costs | $0 |
Location Map
Incident Narrative
"DURING THE MORNING OF 24JUL14, A ROUTINE SURVEY DETECTED AN INTERMITTED VAPOR EMITTING FROM A CASING VENT NEAR LA-3127 IN TAFT, LA. THE VAPOR HAS BEEN CONTINUALLY MONITORED AND AIR SAMPLES WERE COLLECTED FOR ANALYSIS. AT 1700 CDT ON 25JUL14, IT WAS CONFIRMED THAT THE SLOW LEAK WAS ASSOCIATED WITH THE PROPYLENE PP04 LINE. THE LINE WAS BLOCKED IN UTILIZING BY MEANS OF MANUAL VALVES. THE QUANTITY RELEASED WAS FOUND TO BELOW THE REPORTABLE THRESHOLD BUT REPAIR COSTS WERE A CAUSE FOR REPORTING. THE PIPE/LEAK AREA WAS EXPOSED TO A ATMOSPHERE WITHIN THE ANNULUS BETWEEN THE CASING AND THE PIPE. AIR MOVEMENT BETWEEN THE CASING AND PIPE CAUSED MOISTURE/CONDENSATION CREATING A CORROSIVE ATMOSPHERE AT THE POINT WHERE COATING DAMAGE WAS EVIDENT. THE SMART PIG RUN WAS NOT ON A 5 YEAR INTERVAL DUE TO THE FACT IT WAS NOT IN A HCA AND THEREFORE WAS BASED ON CHEVRON'S OWN ANALYSIS TO RUN THE TOOL."
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.