Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2023-11-10 — NC
Operator
Piedmont Natural Gas Co Inc
Cause
Locating Issue
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$162,652
Incident datetime
2023-11-10 00:00 UTC
Report number
Location
NC
Narrative
On october 11, 2023, third-party contractor had 3 crews working in the area installing/boring fiber cable. A piedmont employee was onsite and was stationed with one of the crews, approximately 1/4 mile from the incident location. The piedmont employee was called and notified of damage to the pipeline when one of the remaining 2 crews, using a pneumatic tool, made contact with and cracked the 12 inch steel transmission line (line 204) in the median, near 439 US hwy 13, windsor nc. Contractor was hand-digging over the gas locate marks, however, the marks were not placed correctly.
Detailed record list
Report Received Date
2023-11-10 00:00:00
Iyear
2023
Report Number
20230104
Supplemental Number
38911
Report Type
Supplemental Final
Operator Id
15518
Name
Piedmont Natural Gas Co Inc
Operator Street Address
525 South Tryon Street
Operator City Name
Charlotte
Operator State Abbreviation
NC
Operator Postal Code
28202
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Latitude
35.95800568
Location Longitude
-76.95321815
Nrc Rpt Num
1381454
Additional Nrc Report Numbers
1381621
Commodity Released Type
Natural Gas
Unintentional Release
30.1
Intentional Release
452.25
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Ignite Ind
No
Upstream Action Taken
Valve Closure
Downstream Action Taken
Valve Closure
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
Nc
Onshore Postal Code
27983
Onshore City Name
Windsor
Onshore County Name
Bertie
Designated Location
Not Applicable
Pipe Fac Name
Line 204
Segment Name
Between Mlv 4 & Mlv 5/ Arm Id: 1184407
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
48
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Intrastate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
12
Puddle Weld Ind
No
Pipe Wall Thickness
0.25
Pipe Smys
47000
Pipe Specification
Api 5l
Pipe Seam Type
Longitudinal Erw - Unknown Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Epoxy
Coating Applied Ind
No
Installation Year
2003
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Crack
Class Location Type
Class 3 Location
Could Be Hca
Yes
Determination Method
Method1
Not Flammable Ind
Not Flammable
Heat Damage Ind
No
Non Heat Damage Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
90
Est Cost Intentional Release
1357
Est Cost Prop Damage
162652
Est Cost Emergency
5000
Est Cost Other
0
Gas Cost In Mcf
3
Prpty
169099
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
22
Num Business Building Affctd
9
Wildlife Impact Ind
No
Accident Psig
716
Gas Flow In Pipe In Mcf
550
Mop Psig
962
Mop Cfr Section
192.619(A)(2)
Maop Established Date
2003-03-16 00:00:00
Maop Reversal Flow Ind
Bi-Directional
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
Yes
Gas Odorized Ind
Yes
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
38544
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Notification From Third Party That Caused The Incident
Investigation Status
No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate)
Investigation Status Details
The leak was due to a line hit.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Excavation Damage By Third Party
Ex Party Type
Excavation Damage By Third Party
Prior Notification Ind
Yes
One Call System Ind
Yes
State Law Exempt Ind
No
Notify Cga Dirt
No
Public Row Ind
Yes
Public Subtype
State Highway
Excavator Type
Contractor
Excavator Equipment
Boring
Work Performed
Telecommunications
One Call Notified Ind
Yes
One Call Ticket Num
C232641214
Locator Type
Facility Owner
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
24
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Incomplete Marks At Damage Location
Preparer Name
C********** R******
Preparer Title
Gas Regulatory Compliance Analyst
Preparer Email
C******************@d**********.com
Preparer Telephone
704-731-4680
Authorizer Name
F***** B****
Authorizer Title
Pipeline Safety Governance Manager
Authorizer Telephone
704-731-4618
Authorizer Email
F***********@d**********.com
Narrative
On october 11, 2023, third-party contractor had 3 crews working in the area installing/boring fiber cable. A piedmont employee was onsite and was stationed with one of the crews, approximately 1/4 mile from the incident location. The piedmont employee was called and notified of damage to the pipeline when one of the remaining 2 crews, using a pneumatic tool, made contact with and cracked the 12 inch steel transmission line (line 204) in the median, near 439 US hwy 13, windsor nc. Contractor was hand-digging over the gas locate marks, however, the marks were not placed correctly.
| Report Received Date | 2023-11-10 00:00:00 |
|---|---|
| Iyear | 2023 |
| Report Number | 20230104 |
| Supplemental Number | 38911 |
| Report Type | Supplemental Final |
| Operator Id | 15518 PHMSA Enforcement |
| Name | Piedmont Natural Gas Co Inc |
| Operator Street Address | 525 South Tryon Street |
| Operator City Name | Charlotte |
| Operator State Abbreviation | NC |
| Operator Postal Code | 28202 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Latitude | 35.95800568 Google Maps OpenStreetMap |
| Location Longitude | -76.95321815 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1381454 NRC Report How to search |
| Additional Nrc Report Numbers | 1381621 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 30.1 |
| Intentional Release | 452.25 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Status When Identified | Normal Operation, Includes Pauses During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Downstream Action Taken | Valve Closure |
| Num Pub Evacuated | 0 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Nc |
| Onshore Postal Code | 27983 |
| Onshore City Name | Windsor |
| Onshore County Name | Bertie |
| Designated Location | Not Applicable |
| Pipe Fac Name | Line 204 |
| Segment Name | Between Mlv 4 & Mlv 5/ Arm Id: 1184407 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 48 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 12 |
| Puddle Weld Ind | No |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 47000 |
| Pipe Specification | Api 5l |
| Pipe Seam Type | Longitudinal Erw - Unknown Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Epoxy |
| Coating Applied Ind | No |
| Installation Year | 2003 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Crack |
| Class Location Type | Class 3 Location |
| Could Be Hca | Yes |
| Determination Method | Method1 |
| Not Flammable Ind | Not Flammable |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 90 |
| Est Cost Intentional Release | 1357 |
| Est Cost Prop Damage | 162652 |
| Est Cost Emergency | 5000 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 3 |
| Prpty | 169099 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 22 |
| Num Business Building Affctd | 9 |
| Wildlife Impact Ind | No |
| Accident Psig | 716 |
| Gas Flow In Pipe In Mcf | 550 |
| Mop Psig | 962 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Maop Established Date | 2003-03-16 00:00:00 |
| Maop Reversal Flow Ind | Bi-Directional |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | Yes |
| Gas Odorized Ind | Yes |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Length Segment Isolated | 38544 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Notification From Third Party That Caused The Incident |
| Investigation Status | No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate) |
| Investigation Status Details | The leak was due to a line hit. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Third Party |
| Ex Party Type | Excavation Damage By Third Party |
| Prior Notification Ind | Yes |
| One Call System Ind | Yes |
| State Law Exempt Ind | No |
| Notify Cga Dirt | No |
| Public Row Ind | Yes |
| Public Subtype | State Highway |
| Excavator Type | Contractor |
| Excavator Equipment | Boring |
| Work Performed | Telecommunications |
| One Call Notified Ind | Yes |
| One Call Ticket Num | C232641214 |
| Locator Type | Facility Owner |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 24 |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Incomplete Marks At Damage Location |
| Preparer Name | C********** R****** |
| Preparer Title | Gas Regulatory Compliance Analyst |
| Preparer Email | C******************@d**********.com |
| Preparer Telephone | 704-731-4680 |
| Authorizer Name | F***** B**** |
| Authorizer Title | Pipeline Safety Governance Manager |
| Authorizer Telephone | 704-731-4618 |
| Authorizer Email | F***********@d**********.com |
| Narrative | On october 11, 2023, third-party contractor had 3 crews working in the area installing/boring fiber cable. A piedmont employee was onsite and was stationed with one of the crews, approximately 1/4 mile from the incident location. The piedmont employee was called and notified of damage to the pipeline when one of the remaining 2 crews, using a pneumatic tool, made contact with and cracked the 12 inch steel transmission line (line 204) in the median, near 439 US hwy 13, windsor nc. Contractor was hand-digging over the gas locate marks, however, the marks were not placed correctly. |
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