# TRANSCONTINENTAL GAS PIPE LINE COMPANY — Gas transmission and gathering — incident on 2017-06-30 **Citation:** PHMSA Report 20170064 **Type / status:** incident / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective:** 2017-06-30 **Published:** 2017-07-31 Gas transmission and gathering incident in LA. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 218 NATURAL GAS released, $300,000 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings. PHMSA trend classification: significant incident, not serious. ## Document text Gas transmission and gathering incident in LA. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 218 NATURAL GAS released, $300,000 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings. Report number: 20170064. Operator ID: 19570. Reported incident date: 6/30/2017 15:35. Cause detail: INTERNAL CORROSION Cause detail: B.S.E.E. REPORTED BUBBLES IN THE VACITNITY OF VERMILION AREA (VA) BLOCKS 101 AND 81 LATE AFTERNOON ON 6/30/17. OPERATIONS MADE THE INTIAL FLIGHT OVER THE AREA AND THEN CLOSED THE TOPSIDE BLOCK VALVE AT THE VA-66 PLATFORM AND THE TOPSIDE BLOCK VALVE A THE VA-78 PLATFORM. A SECOND FLIGHT WAS MADE THE NEXT MORNING ON 7/1/17 AND BUBBLES WERE STILL PRESENT ALONG WITH A PRESSURE DROP ON THE SHUT IN PIPELINE. A DIVE BOAT WAS SECURED WITH PERSONNEL, TOOLS, AND A TEMPORARY BOLT ON LEAK CLAMP. DIVE BOAT AND PERSONNEL ARRIVED ON LOCATION AT VA-82 BUBBLES AT 22:15 ON 7/2/17. PIPE LEAK LOCATED BY DIVER AT 01:35 ON 7/3/17; COATING WAS REMOVED AND LEAK WAS MARKED WITH A BOUY. SUBSEA TIE-IN ASSEMBLY BALL VALVE WAS LOCATED IN VA-81 DOWNSTREAM OF THE LEAK AND CLOSED AT 07:07 ON 7/4/17. BOLT ON LEAK CLAMP WAS INSTALLED IN VA-82 AND LEAK STOPPED AT 18:45 ON 7/4/17. VA-66 AND VA-78 PLATFORM VAVLES WERE OPENED AT 10:00 ON 7/5/17. PHMSA trend classification: significant incident, not serious. PHMSA standardized cause: CORROSION — INTERNAL. PHMSA indexed costs: $300,660 reported total cost, $147,271.694 in 1984 dollars, $361,911.002 in current-year dollars. PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings. ## Provenance - Official: Yes - Source: - Source ID: `phmsa-pipeline-incidents` - SHA-256: `d4d8c16f443503104e12cc5f1967a27cd28b7bfb0dc2c5399c80ecc22439dce6` - Retrieved: 2026-08-20T03:30:32.010Z - Exported: 2026-08-26T00:06:57.561Z - Document slug: `phmsa-incident-f675fe7e4fc555d221d752a8` ### Source metadata ```json { "recordKind": "pipeline_incident", "datasetType": "gas_transmission_gathering", "datasetLabel": "Gas transmission and gathering", "datasetPeriod": "January 2010 to present", "report": { "number": "20170064", "supplementalNumber": "17416", "type": "SUPPLEMENTAL FINAL", "receivedDate": "2017-07-31", "receivedDateRaw": "7/31/2017" }, "operator": { "id": "19570", "name": "TRANSCONTINENTAL GAS PIPE LINE COMPANY" }, "incident": { "date": "2017-06-30", "dateRaw": "6/30/2017 15:35" }, "location": { "city": null, "county": null, "state": "LA", "postalCode": null, "latitude": 29.211733, "longitude": -92.607817, "type": "OFFSHORE", "details": {}, "facilityName": null }, "cause": { "category": "CORROSION FAILURE", "details": { "CAUSE_DETAILS": "INTERNAL CORROSION", "NARRATIVE": "B.S.E.E. REPORTED BUBBLES IN THE VACITNITY OF VERMILION AREA (VA) BLOCKS 101 AND 81 LATE AFTERNOON ON 6/30/17. OPERATIONS MADE THE INTIAL FLIGHT OVER THE AREA AND THEN CLOSED THE TOPSIDE BLOCK VALVE AT THE VA-66 PLATFORM AND THE TOPSIDE BLOCK VALVE A THE VA-78 PLATFORM. A SECOND FLIGHT WAS MADE THE NEXT MORNING ON 7/1/17 AND BUBBLES WERE STILL PRESENT ALONG WITH A PRESSURE DROP ON THE SHUT IN PIPELINE. A DIVE BOAT WAS SECURED WITH PERSONNEL, TOOLS, AND A TEMPORARY BOLT ON LEAK CLAMP. DIVE BOAT AND PERSONNEL ARRIVED ON LOCATION AT VA-82 BUBBLES AT 22:15 ON 7/2/17. PIPE LEAK LOCATED BY DIVER AT 01:35 ON 7/3/17; COATING WAS REMOVED AND LEAK WAS MARKED WITH A BOUY. SUBSEA TIE-IN ASSEMBLY BALL VALVE WAS LOCATED IN VA-81 DOWNSTREAM OF THE LEAK AND CLOSED AT 07:07 ON 7/4/17. BOLT ON LEAK CLAMP WAS INSTALLED IN VA-82 AND LEAK STOPPED AT 18:45 ON 7/4/17. VA-66 AND VA-78 PLATFORM VAVLES WERE OPENED AT 10:00 ON 7/5/17." } }, "consequences": { "fatalities": 0, "injuries": 0, "commodity": "NATURAL GAS", "release": "218", "propertyDamage": 300000, "estimatedOperatorCost": 0, "estimatedEmergencyCost": 0, "estimatedEnvironmentalCost": null, "ignition": "NO", "explosion": "NO", "evacuated": 0, "raw": { "FATAL": "0", "INJURE": "0", "UNINTENTIONAL_RELEASE": "218", "EST_COST_PROP_DAMAGE": "300000", "PRPTY": "300660" } }, "provenance": { "viewId": "27nc-rsge", "viewUrl": "https://data.transportation.gov/api/views/27nc-rsge", "assetId": "2b05c2d8-d14a-4c56-ac1c-7d23a4bc31c8", "archiveFilename": "Gas Transmission & Gathering Incident Data - January 2010 to present.zip", "archiveSha256": "fe0b136ca4b00ac987a8bc2e195098accf910d97512c5fc3b59e62d9da5f674e", "memberPath": "incident_gas_transmission_gathering_jan2010_present.txt", "memberSha256": "b435f2a25718cf54c54e00294e6788c4f9c6860e02fb86355e75d294c243c4dd", "rowNumber": 1086, "rowSha256": "5bb8222f0c4bd162384b969d7065be64c1a8d99b007a8c64126b068d8bde824a" }, "caveat": "Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.", "operatorReported": true, "finalAgencyFinding": false, "flaggedAnalysis": { "dataAsOf": "2026-07-31", "flags": { "fireFirst": null, "significant": true, "serious": false }, "standardizedCause": { "sevenCategory": "CORROSION", "sevenSubcategory": "INTERNAL", "eightCategory": "CORROSION", "eightSubcategory": "INTERNAL" }, "costs": { "reported": 300660, "in1984Dollars": 147271.69429323578, "currentYearDollars": 361911.00247635203 }, "caveat": "PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.", "provenance": { "sourceUrl": "https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/data_statistics/pipeline/PHMSA_Pipeline_Safety_Flagged_Incidents.zip", "landingPageUrl": "https://www.phmsa.dot.gov/data-and-statistics/pipeline/pipeline-incident-flagged-files", "catalogUrl": "https://data.transportation.gov/Pipelines-and-Hazmat/Pipeline-Incident-Flagged-Files/qdme-9bbm", "retrievalMode": "official_live", "archivedAt": null, "archiveSha256": "317e6a3e16d60b9b677efe391dc40258b5dd7ead83fb8bea74cb553cedfbbdec", "workbook": "gtggungs2010toPresent.xlsx", "sheet": "gtggungs2010toPresent", "rowNumber": 910, "rowSha256": "d67dd8490dc662efc4c24b4563a1dc4def098d8697e03dd9ef141dd77619376b" } }, "jurisdiction": "US", "operatorName": "TRANSCONTINENTAL GAS PIPE LINE COMPANY" } ```