Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2023-07-07 — FL
Operator
Peoples Gas System Inc
Cause
Locating Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$354,400
Incident datetime
2023-07-07 00:00 UTC
Report number
Location
FL, USA
Narrative
On june 7, 2023, at approximately 02:00 hours, pgs was notified that a third-party contractor had struck a gas pipeline at state road 31 & state road 80 in ft myers, florida. Responding crews were dispatched and arrived to find a soil sampling rig was the cause of the damaged pipeline and escaping gas. An assessment was made of the scene, including the ability to safely manage the site. An evaluation of options for the one-way-fed 8" steel pipeline, concluded that the pipeline would remain in service to continually supply approximately 25,300 customers downstream, until a bypass could be installed to isolate the damaged section of pipeline. Over the following days, crews worked to install 750' of 8" steel bypass around the damaged section of pipeline. The bypass was able to isolate the damaged section of pipeline on june 10, 2023, at 13:25, and complete stoppage of the escaping gas. A root cause investigation was concluded and found two primary contributing factors: 1. The gas pipeline in the location of this incident was/is classified as a "high priority subsurface installation (hpsi)" by pgs through the positive response code of "2c". Per florida statue chapter 556 hpsi requires special procedures when digging near an hpsi. With this classification, before any digging or demolition, the excavator must notify the member operator of the start date and time of the excavation. In accordance with f.S. 556, this hpsi was marked by pgs, and a response communicated back to the requesting excavator using a 2c (marked with exceptions: high profile subsurface installation in conflict). The instructions provided and communicated to the excavator indicated, "excavator must notify the member operator of the excavation or demolition start date and time" which the excavator failed to do. In addition, peoples gas also sent an e-mail to the excavator notifying the excavator about the hpsi and requesting the start date and time. The failure by the excavator to notify pgs of the timing of their excavation and the specific location did not allow pgs to give additional location information and specifications related to the pipeline identified as "in conflict". The failure also prevented the possibility of a peoples gas locator being on-site during the excavation. 2. The depth of the pipeline at the damaged location was over thirteen feet deep. When pgs' locator performed the initial locate marking, the locate signal unknowingly jumped off the gas pipeline onto an adjacent telecommunication facility. This caused the locate markings to veer off the gas pipeline by approximately 36" to 48" at the damaged location.
Detailed record list
Report Received Date
2023-07-07 00:00:00
Iyear
2023.0
Report Number
20230033.0
Supplemental Number
38576.0
Report Type
Supplemental Final
Operator Id
15348
Name
Peoples Gas System Inc
Operator Street Address
Po Box 2562
Operator City Name
Tampa
Operator State Abbreviation
FL
Operator Postal Code
33601.0
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Street Address
State Road 31 & State Road 80
Location City Name
Ft.myers
Location County Name
Usa
Location State Abbreviation
FL
Location Postal Code
33905.0
Location Latitude
26.7014321
Location Longitude
-81.7601848
Flow Cont Other Ind
Yes
Flow Cont Other Detail
Lowered Pressure At Supplying Gate From 350 Psi To 250 Psi.
Nrc Rpt Num
1369358.0
Additional Nrc Report Numbers
1369590.0
Commodity Released Type
Natural Gas
Unintentional Release
4797.0
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Num Pub Evacuated
0.0
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
162.0
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
2000.0
Pipe Diameter
8.0
Pipe Specification
Api 5l X52
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Longitudinal Erw - High Frequency
Wt Steel
0.219
Release Type
Mechanical Puncture
Puncture Axial
0.5
Puncture Circum
0.5
Class Location Type
Class 1 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
354400.0
Est Cost Emergency
37000.0
Est Cost Other
0.0
Gas Cost In Mcf
9.0
Est Cost Unintentional Release
43173.0
Est Cost Intentional Release
0.0
Prpty
434573.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Num Persons Hosp Not Ovnght
0.0
Num Injured Treated By Emt
0.0
Num Resident Building Affctd
0.0
Num Business Building Affctd
0.0
Accident Psig
350.0
Normal Psig
350.0
Mop Psig
476.0
Mop Cfr Section
192.619(A)(2)
Maop Established Date
2013-02-15 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Injection Pump
Gas Odorized Lvl Not Msrd Ind
Yes
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Other
Accident Details
Water Department
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
Excavator damage to facility.
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
Drilling
Work Performed
Engineering/surveying
One Call Notified Ind
Yes
One Call Ticket Num
132300796.0
Locator Type
Facility Owner
Visible Marks
Yes
Service Interruption
No
Root Cause Category
Locating Issue
Root Cause Type
Facility Not Marked Due To Incomplete Marks At Damage Location
Preparer Name
I***** J****
Preparer Title
Compliance Analyst
Preparer Email
I******@t*********.com
Preparer Telephone
407-420-6617
Authorizer Name
R****** H*****
Authorizer Title
Manager Pipeline Safety Compliance
Authorizer Telephone
407-420-6667
Authorizer Email
R******@t*********.com
Narrative
On june 7, 2023, at approximately 02:00 hours, pgs was notified that a third-party contractor had struck a gas pipeline at state road 31 & state road 80 in ft myers, florida. Responding crews were dispatched and arrived to find a soil sampling rig was the cause of the damaged pipeline and escaping gas. An assessment was made of the scene, including the ability to safely manage the site. An evaluation of options for the one-way-fed 8" steel pipeline, concluded that the pipeline would remain in service to continually supply approximately 25,300 customers downstream, until a bypass could be installed to isolate the damaged section of pipeline. Over the following days, crews worked to install 750' of 8" steel bypass around the damaged section of pipeline. The bypass was able to isolate the damaged section of pipeline on june 10, 2023, at 13:25, and complete stoppage of the escaping gas. A root cause investigation was concluded and found two primary contributing factors: 1. The gas pipeline in the location of this incident was/is classified as a "high priority subsurface installation (hpsi)" by pgs through the positive response code of "2c". Per florida statue chapter 556 hpsi requires special procedures when digging near an hpsi. With this classification, before any digging or demolition, the excavator must notify the member operator of the start date and time of the excavation. In accordance with f.S. 556, this hpsi was marked by pgs, and a response communicated back to the requesting excavator using a 2c (marked with exceptions: high profile subsurface installation in conflict). The instructions provided and communicated to the excavator indicated, "excavator must notify the member operator of the excavation or demolition start date and time" which the excavator failed to do. In addition, peoples gas also sent an e-mail to the excavator notifying the excavator about the hpsi and requesting the start date and time. The failure by the excavator to notify pgs of the timing of their excavation and the specific location did not allow pgs to give additional location information and specifications related to the pipeline identified as "in conflict". The failure also prevented the possibility of a peoples gas locator being on-site during the excavation. 2. The depth of the pipeline at the damaged location was over thirteen feet deep. When pgs' locator performed the initial locate marking, the locate signal unknowingly jumped off the gas pipeline onto an adjacent telecommunication facility. This caused the locate markings to veer off the gas pipeline by approximately 36" to 48" at the damaged location.
| Report Received Date | 2023-07-07 00:00:00 |
|---|---|
| Iyear | 2023.0 |
| Report Number | 20230033.0 |
| Supplemental Number | 38576.0 |
| Report Type | Supplemental Final |
| Operator Id | 15348 PHMSA Enforcement |
| Name | Peoples Gas System Inc |
| Operator Street Address | Po Box 2562 |
| Operator City Name | Tampa |
| Operator State Abbreviation | FL |
| Operator Postal Code | 33601.0 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Street Address | State Road 31 & State Road 80 |
| Location City Name | Ft.myers |
| Location County Name | Usa |
| Location State Abbreviation | FL |
| Location Postal Code | 33905.0 |
| Location Latitude | 26.7014321 Google Maps OpenStreetMap |
| Location Longitude | -81.7601848 Google Maps OpenStreetMap |
| Flow Cont Other Ind | Yes |
| Flow Cont Other Detail | Lowered Pressure At Supplying Gate From 350 Psi To 250 Psi. |
| Nrc Rpt Num | 1369358.0 NRC Report How to search |
| Additional Nrc Report Numbers | 1369590.0 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 4797.0 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Num Pub Evacuated | 0.0 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 162.0 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 2000.0 |
| Pipe Diameter | 8.0 |
| Pipe Specification | Api 5l X52 |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Longitudinal Erw - High Frequency |
| Wt Steel | 0.219 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 0.5 |
| Puncture Circum | 0.5 |
| Class Location Type | Class 1 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 354400.0 |
| Est Cost Emergency | 37000.0 |
| Est Cost Other | 0.0 |
| Gas Cost In Mcf | 9.0 |
| Est Cost Unintentional Release | 43173.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 434573.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Num Persons Hosp Not Ovnght | 0.0 |
| Num Injured Treated By Emt | 0.0 |
| Num Resident Building Affctd | 0.0 |
| Num Business Building Affctd | 0.0 |
| Accident Psig | 350.0 |
| Normal Psig | 350.0 |
| Mop Psig | 476.0 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Maop Established Date | 2013-02-15 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Injection Pump |
| Gas Odorized Lvl Not Msrd Ind | Yes |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Other |
| Accident Details | Water Department |
| 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 | Excavator damage to facility. |
| 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 | Drilling |
| Work Performed | Engineering/surveying |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 132300796.0 |
| Locator Type | Facility Owner |
| Visible Marks | Yes |
| Service Interruption | No |
| Root Cause Category | Locating Issue |
| Root Cause Type | Facility Not Marked Due To Incomplete Marks At Damage Location |
| Preparer Name | I***** J**** |
| Preparer Title | Compliance Analyst |
| Preparer Email | I******@t*********.com |
| Preparer Telephone | 407-420-6617 |
| Authorizer Name | R****** H***** |
| Authorizer Title | Manager Pipeline Safety Compliance |
| Authorizer Telephone | 407-420-6667 |
| Authorizer Email | R******@t*********.com |
| Narrative | On june 7, 2023, at approximately 02:00 hours, pgs was notified that a third-party contractor had struck a gas pipeline at state road 31 & state road 80 in ft myers, florida. Responding crews were dispatched and arrived to find a soil sampling rig was the cause of the damaged pipeline and escaping gas. An assessment was made of the scene, including the ability to safely manage the site. An evaluation of options for the one-way-fed 8" steel pipeline, concluded that the pipeline would remain in service to continually supply approximately 25,300 customers downstream, until a bypass could be installed to isolate the damaged section of pipeline. Over the following days, crews worked to install 750' of 8" steel bypass around the damaged section of pipeline. The bypass was able to isolate the damaged section of pipeline on june 10, 2023, at 13:25, and complete stoppage of the escaping gas. A root cause investigation was concluded and found two primary contributing factors: 1. The gas pipeline in the location of this incident was/is classified as a "high priority subsurface installation (hpsi)" by pgs through the positive response code of "2c". Per florida statue chapter 556 hpsi requires special procedures when digging near an hpsi. With this classification, before any digging or demolition, the excavator must notify the member operator of the start date and time of the excavation. In accordance with f.S. 556, this hpsi was marked by pgs, and a response communicated back to the requesting excavator using a 2c (marked with exceptions: high profile subsurface installation in conflict). The instructions provided and communicated to the excavator indicated, "excavator must notify the member operator of the excavation or demolition start date and time" which the excavator failed to do. In addition, peoples gas also sent an e-mail to the excavator notifying the excavator about the hpsi and requesting the start date and time. The failure by the excavator to notify pgs of the timing of their excavation and the specific location did not allow pgs to give additional location information and specifications related to the pipeline identified as "in conflict". The failure also prevented the possibility of a peoples gas locator being on-site during the excavation. 2. The depth of the pipeline at the damaged location was over thirteen feet deep. When pgs' locator performed the initial locate marking, the locate signal unknowingly jumped off the gas pipeline onto an adjacent telecommunication facility. This caused the locate markings to veer off the gas pipeline by approximately 36" to 48" at the damaged location. |
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