NORTHERN NATURAL GAS CO — Gas transmission and gathering — incident on 2013-12-03

Gas transmission and gathering incident in WAVERLY, LANCASTER County, NE. Reported cause: OTHER OUTSIDE FORCE DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 1000 NATURAL GAS released, $2,500 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: 20130112.

Operator ID: 13750.

Reported incident date: 12/3/2013 14:06.

Location detail: 16.94

Cause detail: DAMAGE BY CAR, TRUCK, OR OTHER MOTORIZED VEHICLE/EQUIPMENT NOT ENGAGED IN EXCAVATION

Cause detail: A LANDOWNER/FARMER STRUCK AND DAMAGED A FARM TAP SETTING WITH HIS DISKING EQUIPMENT. THE FARM EQUIPMENT DESTROYED THE FARM TAP FENCE AND SIGNAGE, STRUCK THE FARM TAP SETTING, AND CRACKED A 1-INCH NIPPLE ON THE HIGH PRESSURE SIDE OF THE FARM TAP NEAR GROUND LEVEL. HE IMMEDIATELY NOTIFIED 911 AND EMERGENCY PERSONNEL RESPONDED. THE 20-INCH MAINLINE PIPING WAS BLOWN DOWN TO 75 PSI SO EMPLOYEES COULD APPROACH SAFELY. THE SHUT OFF VALVE, BELOW THE CRACKED NIPPLE, WAS SHUT OFF AND THE EMERGENCY WAS UNDER CONTROL. THE MAINLINE WAS RETURNED TO NORMAL AND THE FARM TAP WAS REPAIRED THE NEXT DAY.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: OTHER OUTSIDE FORCE DAMAGE — VEHICLE NOT ENGAGED IN EXCAVATION.

PHMSA indexed costs: $21,500 reported total cost, $15,795.61 in 1984 dollars, $22,907.482 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.