Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2021-01-04 — SC
Operator
Dominion Energy South Carolina, Inc.
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$207,756
Incident datetime
2021-01-04 15:53
Report number
Location
SC, CHARLESTON
Narrative
Note: this is an updated supplemental/final report, which corrects a note within the previous report's part h narrative. Part e.3.A maop has been confirmed. On january 4, 2021 at 3:53 pm, an 8-inch steel main was damaged by a boring contractor installing telecommunications in charleston, sc. The damage occurred at the intersection of remount rd and n. Rhett st underneath the roadway. The leak was secured at approximately 5:15 pm by operating four valves and no customer services were lost. The investigation that followed determined that the line was located correctly, but the excavator failed to pothole to verify that he was clear of the main when crossing it. When the damages were assessed, it was determined that the cost of damage to the road and surroundings exceeded the $50,000 PHMSA reporting threshold. Ldf: 289025
Detailed record list
Occurred At
2021-01-04 15:53:00
Year
2021
Report Received Date
2021-02-09 00:00:00
Iyear
2021.0
Report Number
20210017.0
Supplemental Number
35815.0
Report Type
Supplemental Final
Operator Id
18408
Name
Dominion Energy South Carolina, Inc.
Operator Street Address
601 Taylor Road Mail Code J48
Operator City Name
Cayce
Operator State Abbreviation
SC
Operator Postal Code
29033
Local Datetime
2021-01-04 15:53:00
Time Zone
Eastern
Daylight Savings Ind
No
Location Street Address
Remount Rd And North Rhett Ave
Location City Name
North Charleston
Location County Name
Charleston
Location State Abbreviation
SC
Location Postal Code
29406
Location Latitude
32.902339
Location Longitude
-79.985598
Flow Cont Key Crit Ind
Yes
Nrc Rpt Datetime
2021-02-08 13:05:00
Nrc Rpt Num
1297575
Commodity Released Type
Natural Gas
Unintentional Release
367.18
Intentional Release
0.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2021-01-04 15:53:00
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Initial Responder Com Datetime
2021-01-06 15:35:00
On Site Datetime
2021-01-04 16:22:00
Federal
No
Location Type
Public Property
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
108.0
Other Underground Facilities
No
Crossing
Yes
Road Crossing Ind
Yes
Road Type
Uncased, Bored/drilled
Pipe Facility Type
Investor Owned
System Part Involved
Main
Installation Year
1999.0
Pipe Diameter
8.0
Pipe Specification
Api 5l
Pipe Manufacturer
Unknown
Material Involved
Steel
Steel Seam Type
Longitudinal Erw - High Frequency
Wt Steel
0.25
Release Type
Mechanical Puncture
Puncture Axial
12.0
Puncture Circum
0.1
Class Location Type
Class 3 Location
Est Cost Oper Paid
104315.0
Est Cost Prop Damage
207756.0
Est Cost Emergency
0.0
Est Cost Other
55250.0
Est Cost Other Details
Contract Labor: $55,250
Gas Cost In Mcf
4.22
Est Cost Unintentional Release
1549.0
Est Cost Intentional Release
0.0
Prpty
368870.0
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
49.0
Normal Psig
49.0
Mop Psig
60.0
Mop Cfr Section
192.621 M
Maop Established Date
1999-03-02 00:00:00
Accident Pressure
Pressure Did Not Exceed Maop
Gas Odorized System Type
Odorized By Others
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
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
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 did not cause enough pressure drop to exceed an alarm threshold
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
Yes
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
2012171410
Locator Type
Contract Locator
Visible Marks
Yes
Service Interruption
No
Root Cause Category
Excavation Issue
Root Cause Type
Improper Excavation Practice Not Listed Above
Preparer Name
J***** F***
Preparer Title
Engineer Iii - Pipeline Compliance
Preparer Email
J**********@d*************.com
Preparer Telephone
803-260-3602
Local Contact Name
C**** O********
Local Contact Email
C****************@d*************.com
Local Contact Telephone
803-217-9245
Authorizer Name
C**** O********
Authorizer Title
Director - Gas Operations
Authorizer Telephone
803-217-9245
Authorizer Email
C****************@d*************.com
Narrative
Note: this is an updated supplemental/final report, which corrects a note within the previous report's part h narrative. Part e.3.A maop has been confirmed. On january 4, 2021 at 3:53 pm, an 8-inch steel main was damaged by a boring contractor installing telecommunications in charleston, sc. The damage occurred at the intersection of remount rd and n. Rhett st underneath the roadway. The leak was secured at approximately 5:15 pm by operating four valves and no customer services were lost. The investigation that followed determined that the line was located correctly, but the excavator failed to pothole to verify that he was clear of the main when crossing it. When the damages were assessed, it was determined that the cost of damage to the road and surroundings exceeded the $50,000 PHMSA reporting threshold. Ldf: 289025
| Occurred At | 2021-01-04 15:53:00 |
|---|---|
| Year | 2021 |
| Report Received Date | 2021-02-09 00:00:00 |
| Iyear | 2021.0 |
| Report Number | 20210017.0 |
| Supplemental Number | 35815.0 |
| Report Type | Supplemental Final |
| Operator Id | 18408 PHMSA Enforcement |
| Name | Dominion Energy South Carolina, Inc. |
| Operator Street Address | 601 Taylor Road Mail Code J48 |
| Operator City Name | Cayce |
| Operator State Abbreviation | SC |
| Operator Postal Code | 29033 |
| Local Datetime | 2021-01-04 15:53:00 |
| Time Zone | Eastern |
| Daylight Savings Ind | No |
| Location Street Address | Remount Rd And North Rhett Ave |
| Location City Name | North Charleston |
| Location County Name | Charleston |
| Location State Abbreviation | SC |
| Location Postal Code | 29406 |
| Location Latitude | 32.902339 Google Maps OpenStreetMap |
| Location Longitude | -79.985598 Google Maps OpenStreetMap |
| Flow Cont Key Crit Ind | Yes |
| Nrc Rpt Datetime | 2021-02-08 13:05:00 |
| Nrc Rpt Num | 1297575 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 367.18 |
| Intentional Release | 0.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2021-01-04 15:53:00 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Initial Responder Com Datetime | 2021-01-06 15:35:00 |
| On Site Datetime | 2021-01-04 16:22:00 |
| Federal | No |
| Location Type | Public Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 108.0 |
| Other Underground Facilities | No |
| Crossing | Yes |
| Road Crossing Ind | Yes |
| Road Type | Uncased, Bored/drilled |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Main |
| Installation Year | 1999.0 |
| Pipe Diameter | 8.0 |
| Pipe Specification | Api 5l |
| Pipe Manufacturer | Unknown |
| Material Involved | Steel |
| Steel Seam Type | Longitudinal Erw - High Frequency |
| Wt Steel | 0.25 |
| Release Type | Mechanical Puncture |
| Puncture Axial | 12.0 |
| Puncture Circum | 0.1 |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 104315.0 |
| Est Cost Prop Damage | 207756.0 |
| Est Cost Emergency | 0.0 |
| Est Cost Other | 55250.0 |
| Est Cost Other Details | Contract Labor: $55,250 |
| Gas Cost In Mcf | 4.22 |
| Est Cost Unintentional Release | 1549.0 |
| Est Cost Intentional Release | 0.0 |
| Prpty | 368870.0 |
| 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 | 49.0 |
| Normal Psig | 49.0 |
| Mop Psig | 60.0 |
| Mop Cfr Section | 192.621 M View CFR 49 §192 |
| Maop Established Date | 1999-03-02 00:00:00 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Gas Odorized System Type | Odorized By Others |
| 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 | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| 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 did not cause enough pressure drop to exceed an alarm threshold |
| 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 | Yes |
| 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 | 2012171410 |
| Locator Type | Contract Locator |
| Visible Marks | Yes |
| Service Interruption | No |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Improper Excavation Practice Not Listed Above |
| Preparer Name | J***** F*** |
| Preparer Title | Engineer Iii - Pipeline Compliance |
| Preparer Email | J**********@d*************.com |
| Preparer Telephone | 803-260-3602 |
| Local Contact Name | C**** O******** |
| Local Contact Email | C****************@d*************.com |
| Local Contact Telephone | 803-217-9245 |
| Authorizer Name | C**** O******** |
| Authorizer Title | Director - Gas Operations |
| Authorizer Telephone | 803-217-9245 |
| Authorizer Email | C****************@d*************.com |
| Narrative | Note: this is an updated supplemental/final report, which corrects a note within the previous report's part h narrative. Part e.3.A maop has been confirmed. On january 4, 2021 at 3:53 pm, an 8-inch steel main was damaged by a boring contractor installing telecommunications in charleston, sc. The damage occurred at the intersection of remount rd and n. Rhett st underneath the roadway. The leak was secured at approximately 5:15 pm by operating four valves and no customer services were lost. The investigation that followed determined that the line was located correctly, but the excavator failed to pothole to verify that he was clear of the main when crossing it. When the damages were assessed, it was determined that the cost of damage to the road and surroundings exceeded the $50,000 PHMSA reporting threshold. Ldf: 289025 |
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