ONEOK GAS TRANSPORTATION, LLC — Gas transmission and gathering — incident on 2014-09-03

Gas transmission and gathering incident in CATOOSA, ROGERS County, OK. Reported cause: MATERIAL FAILURE OF PIPE OR WELD. Reported consequences: 0 fatalities, 0 injuries, 8662 NATURAL GAS released, $60,800 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: 20140100.

Operator ID: 31286.

Reported incident date: 9/3/2014 9:52.

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

Cause detail: ON WEDNESDAY, SEPTEMBER 3, 2014, A ONEOK GAS TRANSPORTATION (OGT) CUSTOMER REPORTED VENTING GAS FROM A VALVE EXTENSION CAN ON OGT'S 24-INCH, LINE A-1170 MAINLINE AT THE MAIN ENTRANCE TO THE PORT OF CATOOSA NEAR CATOOSA, OKLAHOMA. THE ENTRANCE TO THE PORT WAS CLOSED TO TRAFFIC BY PORT AUTHORITIES AS A PRECAUTIONARY MEASURE. THE PIPELINE PRESSURE WAS REDUCED FROM 430 PSIG TO 300 PSIG UNTIL CUSTOMERS COULD SAFELY SHUT DOWN THEIR PROCESSES, AND THE PIPELINE WAS THEN BLOWN DOWN. THERE WERE NO INJURIES OR DEATHS, NOR WAS THERE ANY FIRE ASSOCIATED WITH THIS INCIDENT. THERE WAS SOME LOCAL MEDIA COVERAGE. THE LEAK WAS DETERMINED TO BE A CRACK LOCATED ON AN 8-INCH SADDLE FOR A SIDE TAP OFF THE A-1170 MAINLINE. THE LEAK WAS REPAIRED BY INSTALLING A NEW BRANCH CONNECTION. REPAIRS WERE COMPLETED SATURDAY, SEPTEMBER 6, 2014, AND THE MAINLINE WAS RETURNED TO SERVICE SATURDAY EVENING.

PHMSA trend classification: significant incident, not serious.

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

PHMSA indexed costs: $163,309 reported total cost, $93,467.77 in 1984 dollars, $181,056.629 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.