TRANSWESTERN PIPELINE COMPANY LLC — Gas transmission and gathering — incident on 2018-02-16

Current as of 2018-02-16 Government source

Pipeline and Hazardous Materials Safety AdministrationOfficial agency material

View source

Gas transmission and gathering incident in GALLUP, MCKINLEY County, NM. Reported cause: MATERIAL FAILURE OF PIPE OR WELD. Reported consequences: 0 fatalities, 0 injuries, 1047 NATURAL GAS released, $85,000 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: 20180033.

Operator ID: 19610.

Reported incident date: 2/16/2018 12:18.

Location detail: MP 89

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

Cause detail: 2/16/18 12:18 GAS CONTROL RECEIVED NOTIFICATION FROM A LANDOWNER OF A POSSIBLE LEAK. 14:40 MCKINLEY COUNTY SHERIFF DEPARTMENT AND LANDOWNER WERE NOTIFIED OF BLOWDOWN. 16:21 THE AFFECTED LINE SEGMENT WAS ISOLATED AND BLOWN DOWN BETWEEN VALVE SECTIONS. 2/21/18 EXCAVATION OPERATIONS CONFIRMED LEAK SOURCE; CRACK IN GIRTH WELD. NRC TELEPHONIC NOTIFICATION MADE AT 17:02 NRC#1204895. PHMSA AID NOTIFIED. 2/23/18 48-HOUR UPDATE NRC NOTIFICATION MADE AT 11:24 NRC#1205058. PHMSA AID UPDATED. 3/1/18 REPAIRS COMPLETED, THE LINE WAS RETURNED TO SERVICE AT 12:00. 7/11/18 THIS SUPPLEMENTAL/FINAL REPORT UPDATES PART G APPARENT CAUSE. THE RESULTS OF THE METALLURGICAL ANALYSIS INDICATED THAT THE LEAK INITIATED AT A BOTTOM SIDE CRACK IN A GIRTH WELD. PART D - 7.D COST FOR THE METALLURGICAL ANALYSIS WAS ALSO UPDATED. 7/16/18 THIS SUPPLEMENTAL/FINAL REPORT UPDATES THE PART A #4 - TO 2/16/18 AT 12:18.

PHMSA trend classification: significant incident, not serious.

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

PHMSA indexed costs: $180,145 reported total cost, $110,749.76 in 1984 dollars, $210,307.702 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.

This material provides agency context. It does not replace binding regulatory text, and its legal effect depends on the underlying authority and facts.