NORTHERN STATES POWER CO OF MINNESOTA
gas_distribution Incident — WOODBURY, MN
Incident Information
| Report Date | — |
| Operator | NORTHERN STATES POWER CO OF MINNESOTA |
| Commodity | — |
| Pipeline Type | gas_distribution |
Location
| City | WOODBURY |
| State | MN |
| County | WASHINGTON |
| Coordinates | 44.92002, -92.94415 |
Cause
| Cause | EXCAVATION DAMAGE |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
ON MAY 8, 2020, NORTHERN STATES POWER COMPANY, MINNESOTA (NSPM) WAS NOTIFIED REGARDING A BLOWING GAS SITUATION. THE INVESTIGATION REVEALED THAT AN ABANDONED SIX INCH STEEL, COAL TAR COATING PIPELINE WAS LOCATED. AN EXISTING 12 INCH STEEL FBE COATED HIGH PRESSURE DISTRIBUTION LINE WAS NOT LOCATED. REVIEW OF THE BORE PROFILE DETERMINED THE 12 INCH MAIN THAT WAS INSTALLED IN 2018 WAS APPROXIMATELY 25 FEET AT THE POINT OF DAMAGE. NSPM ATTEMPTED TO EXCAVATE THE MAIN AT THE POINT OF DAMAGED AND LATER DETERMINED DUE TO DEPTH, IT WAS SAFER TO NOT EXPOSE THE MAIN AT THE POINT OF DAMAGE AND INSTALL APPROXIMATELY 1100 FEET OF NEW 12 INCH STEEL. ESTIMATED GAS LOSS WAS CALCULATED FROM SCADA DATA AT THE TIME OF THE DAMAGE. POINT OF DAMAGE WAS NOT EXPOSED SO SIZE OF PUNCTURE IS NOT KNOWN FOR PART D: QUESTION 2.D REVIEW OF EXISTING DAMAGE PREVENTION PROCESSES WAS CONDUCTED AND FOUND THAT THE INDIVIDUAL RESPONSIBLE FOR VERIFYING THE SIZE AND TYPE OF PIPE THAT WAS EXPOSED DID NOT FOLLOW THOSE PROCESSES.
About This Pipeline Incident
Pipeline incident data is reported to the Pipeline and Hazardous Materials Safety Administration (PHMSA). All significant incidents involving fatalities, injuries, or property damage over $50,000 must be reported.