PEOPLES GAS LIGHT & COKE CO
gas_transmission Incident — — December 1, 2011
Incident Information
| Incident Date | December 1, 2011 |
| Operator | PEOPLES GAS LIGHT & COKE CO |
| Commodity | NATURAL GAS |
| Pipeline Type | gas_transmission |
Location
| State | |
| Coordinates | 41.66812, -87.55860 |
Cause
| Cause | EXCAVATION DAMAGE |
| Subcause | EXCAVATION DAMAGE BY OPERATOR'S CONTRACTOR (SECOND PARTY) |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | $65,000 |
| Emergency Response | $38,000 |
| Other Costs | $0 |
Location Map
Incident Narrative
WHILE PERFORMING INTEGRITY MANAGEMENT ASSESSMENT WORK ON A 36"" DIAMETER TRANSMISSION LINE, AN UNMARKED AND UNMAPPED 2"" DIAMETER SERVICE LINE STUB WAS DAMAGED BY EXCAVATION EQUIPMENT RESULTING IN RELEASE OF GAS ON THE 2"" STUB. THE INCIDENT IMPACTED MORE THAN THE 2"" SERVICE LINE. THE 2"" TAP ON THE 36"" TRANSMISSION LINE WAS IMPACTED, AND THE OPERATING PRESSURE OF THE TRANSMISSION LINE HAD TO BE REDUCED, AND A PORTION TAKEN OUT OF SERVICE TO REPLACE A SECTION OF THE 36"" TRANSMISSION LINE. THIS INCIDENT REPORT WAS ORIGINALLY FILED AS A DISTRIBUTION INCIDENT UNDER REPORT # 20110400-15372 FILED ON 12/22/2011. DETREMINATION WAS MADE TO REFILE THIS INCIDENT AS A TRANSMISSION LINE INCIDENT REPORT FOR THE RECORD. A REQUEST FOR RETRACTION OF THE DISTRIBUTION INCIDENT REPORT WILL BE SENT TO PHMSA. DECEMBER 16, 2015 UPDATE: AT THE REQUEST OF PHMSA, PGL HAS AGAIN LOOKED INTO IDENTIFYING THE YEAR THAT THE ITEM INVOLVED IN THE INCIDENT WAS INSTALLED. THE EXACT YEAR THAT THE 2"" DIAMETER SERVICE LINE WAS INSTALLED COULD NOT BE DETERMINED SO IS HAS BEEN MARKED AS ""UNKNOWN"" IN THE FORM.
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.