# PIEDMONT NATURAL GAS CO INC — Gas transmission and gathering — incident on 2022-12-13

- **operation:** document
- **citation:** PHMSA Report 20230003
- **title:** PIEDMONT NATURAL GAS CO INC — Gas transmission and gathering — incident on 2022-12-13
- **source type:** incident
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2023-01-11
- **effective on:** 2022-12-13
- **summary:** Gas transmission and gathering incident in OAKBORO, STANLY County, NC. Reported cause: EXCAVATION DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 2923 NATURAL GAS released, $656,018 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.
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**body:**

Gas transmission and gathering incident in OAKBORO, STANLY County, NC. Reported cause: EXCAVATION DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 2923 NATURAL GAS released, $656,018 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: 20230003.

Operator ID: 15518.

Reported incident date: 12/13/2022 17:20.

Cause detail: EXCAVATION DAMAGE BY THIRD PARTY

Cause detail: EXCAVATION ISSUE

Cause detail: IMPROPER BACKFILLING PRACTICES

Cause detail: A CONTRACTOR INSTALLING A LARGE DIAMETER WATER LINE STRUCK A 6" HIGH PRESSURE TRANSMISSION GAS LINE WITH A BACKHOE. THE DAMAGE RESULTED IN 3,229 CUSTOMER OUTAGES. THE USE OF MECHANIZED EQUIPMENT IN THE TOLERANCE ZONE & EXCAVATOR FAILED TO SUPPORT AND PROTECT FACILITIES.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: EXCAVATION DAMAGE — THIRD PARTY EXCAVATION DAMAGE.

PHMSA indexed costs: $699,047 reported total cost, $304,724.368 in 1984 dollars, $735,915.221 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.
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