# EAST TENNESSEE NATURAL GAS, LLC (SPECTRA ENERGY PARTNERS, LP) — Gas transmission and gathering — incident on 2017-03-17

**Citation:** PHMSA Report 20170031  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2017-03-17  
**Published:** 2017-04-21

Gas transmission and gathering incident in GALLATIN, SUMNER County, TN. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 6649 NATURAL GAS released, $1,003 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: not significant, not serious.

## Document text

Gas transmission and gathering incident in GALLATIN, SUMNER County, TN. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 6649 NATURAL GAS released, $1,003 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: 20170031.

Operator ID: 4070.

Reported incident date: 3/17/2017 6:17.

Location detail: 101

Cause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT

Cause detail: A NATURAL GAS RELEASE THROUGH A RELIEF VALVE AT THE EAST TENNESSEE M&R 59025 OCCURRED AT 6:17 AM ON MARCH 17, 2017. THE AMOUNT OF GAS RELEASED WAS 6649 MCF. ROOT CAUSE FOR THE GAS RELEASE WAS THE RELIEF VALVE PILOT FROZE AND RESEAT DID NOT OCCUR.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EQUIPMENT FAILURE — MALFUNCTION OF CONTROL/RELIEF EQUIPMENT.

PHMSA indexed costs: $20,950 reported total cost, $19,430.343 in 1984 dollars, $24,462.933 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: <https://data.transportation.gov/api/views/27nc-rsge/files/2b05c2d8-d14a-4c56-ac1c-7d23a4bc31c8?download=true&filename=Gas%20Transmission%20%26%20Gathering%20Incident%20Data%20-%20January%202010%20to%20present.zip>
- Source ID: `phmsa-pipeline-incidents`
- SHA-256: `f4ace4666e67fc4d276fe8323fb3d77e5edb666f5ad98acf9faaf2ebc3deb1f9`
- Retrieved: 2026-08-20T03:30:32.010Z
- Exported: 2026-08-26T02:45:05.806Z
- Document slug: `phmsa-incident-74ca327caf19d6bc8c673dd1`

### Source metadata

```json
{
  "recordKind": "pipeline_incident",
  "datasetType": "gas_transmission_gathering",
  "datasetLabel": "Gas transmission and gathering",
  "datasetPeriod": "January 2010 to present",
  "report": {
    "number": "20170031",
    "supplementalNumber": "30636",
    "type": "SUPPLEMENTAL FINAL",
    "receivedDate": "2017-04-21",
    "receivedDateRaw": "4/21/2017"
  },
  "operator": {
    "id": "4070",
    "name": "EAST TENNESSEE NATURAL GAS, LLC (SPECTRA ENERGY PARTNERS, LP)"
  },
  "incident": {
    "date": "2017-03-17",
    "dateRaw": "3/17/2017 6:17"
  },
  "location": {
    "city": "GALLATIN",
    "county": "SUMNER",
    "state": "TN",
    "postalCode": "37066",
    "latitude": 36.422515,
    "longitude": -86.508051,
    "type": "OPERATOR-CONTROLLED PROPERTY",
    "details": {
      "DESIGNATED_NAME": "101"
    },
    "facilityName": "GALLATIN WEST M&R 59025"
  },
  "cause": {
    "category": "EQUIPMENT FAILURE",
    "details": {
      "CAUSE_DETAILS": "MALFUNCTION OF CONTROL/RELIEF EQUIPMENT",
      "NARRATIVE": "A NATURAL GAS RELEASE THROUGH A RELIEF VALVE AT THE EAST TENNESSEE M&R 59025 OCCURRED AT 6:17 AM ON MARCH 17, 2017. THE AMOUNT OF GAS RELEASED WAS 6649 MCF. ROOT CAUSE FOR THE GAS RELEASE WAS THE RELIEF VALVE PILOT FROZE AND RESEAT DID NOT OCCUR."
    }
  },
  "consequences": {
    "fatalities": 0,
    "injuries": 0,
    "commodity": "NATURAL GAS",
    "release": "6649",
    "propertyDamage": 1003,
    "estimatedOperatorCost": 0,
    "estimatedEmergencyCost": 0,
    "estimatedEnvironmentalCost": null,
    "ignition": "NO",
    "explosion": "NO",
    "evacuated": 0,
    "raw": {
      "FATAL": "0",
      "INJURE": "0",
      "UNINTENTIONAL_RELEASE": "6649",
      "EST_COST_PROP_DAMAGE": "1003",
      "PRPTY": "20950"
    }
  },
  "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": 1118,
    "rowSha256": "a9e392242bd221237bcda8649cd8b51f2ebbc0e2b7b4e84690f712918b7764c9"
  },
  "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": false,
      "serious": false
    },
    "standardizedCause": {
      "sevenCategory": "MATERIAL/WELD/EQUIP FAILURE",
      "sevenSubcategory": "MALFUNCTION OF CONTROL/RELIEF EQUIPMENT",
      "eightCategory": "EQUIPMENT FAILURE",
      "eightSubcategory": "MALFUNCTION OF CONTROL/RELIEF EQUIPMENT"
    },
    "costs": {
      "reported": 20950,
      "in1984Dollars": 19430.343251606282,
      "currentYearDollars": 24462.933346644655
    },
    "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": 877,
      "rowSha256": "c73846a30284a90243c7a72232fc66e7aa9854e78c705555e161e23c27f85adb"
    }
  },
  "jurisdiction": "US",
  "operatorName": "EAST TENNESSEE NATURAL GAS, LLC (SPECTRA ENERGY PARTNERS, LP)"
}
```