SHELL PIPELINE CO., L.P.
hazardous_liquid Incident —
Incident Information
| Report Date | — |
| Operator | SHELL PIPELINE CO., L.P. |
| Commodity | — |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 29.89160, -93.98970 |
Cause
| Cause | OTHER ACCIDENT CAUSE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
A CRACK WAS DETECTED IN THE LAP WELD IN PROXIMITY TO THE FLOATING ROOF BEARING PLATE. FURTHER METALLURGICAL INVESTIGATION REVEALED THE THROAT THICKNESS OF THE LAP WELD AREA WAS NOT SUFFICIENT. THE COMBINED STRESSES AS A RESULT OF THE BEARING FORCES AND POSSIBLY HISTORICAL FATIGUE LOADING OF THE FLOATING ROOF BEING LANDED ON THE BEARING PLATE ARE CONSIDERED AS THE MAIN FACTORS LEADING TO THE FAILURE. CORRECTIVE ACTION: THE FLOOR PLATE WHICH INCLUDED THE LAP WELD AND BEARING PLATE WAS CUT OUT. THE REPAIRED AREA COMPLIED WITH API 653 FOR BEARING PLATE AND WELD DIMENSIONS. ACTUAL CAUSE SHOULD BE G-5 MATERIAL/WELD FAILURE. (TANK FLOOR WELD CRACK) THE ON-LINE SYSTEM WOULD NOT ALLOW G-5 TO BE COMPLETED FOR A TANK WELD FAILURE. 3/13/2013 - UPDATED E5F PER PHMSA REQUEST.
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.