TEXAS EASTERN TRANSMISSION LP (SPECTRA ENERGY CORP) — Gas transmission and gathering — incident on 2015-12-08

Gas transmission and gathering incident in Not Within a Municipality, TROUSDALE County, TN. Reported cause: MATERIAL FAILURE OF PIPE OR WELD. Reported consequences: 0 fatalities, 0 injuries, 10 NATURAL GAS released, $62,000 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: 20160001.

Operator ID: 19235.

Reported incident date: 12/8/2015 13:45.

Location detail: 307.70

Cause detail: DESIGN-, CONSTRUCTION-, INSTALLATION-, OR FABRICATION-RELATED

Cause detail: ON DECEMBER 8, 2015 A LANDOWNER IN TROUSDALE COUNTY, TENNESSEE REPORTED SIGNS OF A NATURAL GAS LEAK TO SPECTRA ENERGY. COMPANY PERSONNEL CONFIRMED NATURAL GAS WAS BEING RELEASED AT A SLOW RATE FROM THE TEXAS EASTERN TRANSMISSION, LP 30-INCH LINE 10 AT MILEPOST 307.70. SPECTRA ENERGY EXCAVATED THE PIPELINE AND DETERMINED THE LEAKS WAS THE RESULT OF A CRACK IN THE GIRTH WELD. METALLURGICAL TESTING DETERMINED THE CRACK WAS CAUSED BY A WELD DEFECT (LACK OF PENETRATION) THAT WAS SUBJECTED TO SECONDARY LOADING. THE AFFECTED JOINT OF PIPE WAS REPLACED.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: MATERIAL FAILURE OF PIPE OR WELD — CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED.

PHMSA indexed costs: $114,405 reported total cost, $79,694.834 in 1984 dollars, $136,260.931 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.