NATURAL GAS PIPELINE CO OF AMERICA (KMI) — Gas transmission and gathering — incident on 2012-06-06

Gas transmission and gathering incident in PAMPA, GREY County, TX. Reported cause: MATERIAL FAILURE OF PIPE OR WELD. Reported consequences: 0 fatalities, 0 injuries, 34455 NATURAL GAS released, $25,000 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: 20120066.

Operator ID: 13120.

Reported incident date: 6/6/2012 2:47.

Location detail: MILE POST 52

Cause detail: ORIGINAL MANUFACTURING-RELATED (NOT GIRTH WELD OR OTHER WELDS FORMED IN THE FIELD)

Cause detail: THE NPS 26 #1 OKLAHOMA EXTENSION FAILED 0.85 MILES DOWNSTREAM (WEST) OF COMPRESSOR STATION 154 IN GRAY COUNTY TEXAS. THE FRACTURE INITIATED NEAR THE OD SURFACE 17 INCHES DOWNSTREAM OF GIRTH WELD 1220 DUE TO HYDROGEN STRESS CRACKING AT A HARD SPOT. THE HARD SPOT WAS A MANUFACTURING DEFECT PRESENT SINCE PLATE ROLLING. THE 3.3 MILES OF PIPELINE (AFFECTED AREA) WAS RETURNED TO SERVICE ON JUNE 29, 2012 AT 80% OF THE OPERATING PRESSURE AT THE TIME OF THE INCIDENT. THE PROCESS TO RETURN IT TO 100% OF MAOP WAS STARTED ON NOVEMBER 16, 2012.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: MATERIAL FAILURE OF PIPE OR WELD — MANUFACTURING-RELATED.

PHMSA indexed costs: $117,000 reported total cost, $88,084.203 in 1984 dollars, $128,446.264 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.