Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2020-06-19 — SC
Operator
Dominion Energy South Carolina, Inc.
Cause
Natural Force Damage
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$85,000
Incident datetime
2020-06-19 17:00
Report number
Location
SC, BEAUFORT
Narrative
On june 19, 2020, at approximately 5:00 pm local time, in okatie, sc, a severe thunderstorm with high winds caused two trees to fall onto the hwy 46 valve station. The damage severed an above-ground 2-in steel strainer on the valve station. It is estimated that approximately 6996.1 mcf of natural gas was lost during the leak. The leak was stopped at approximately 9:42 pm, and temporary repairs were made to the station. During this time okatie hwy (sc hwy 46) was closed in both directions. The initial nrc incident report number was 1280381. On, june 26, 2020 a follow-up report was made to the nrc to give corrections to the information captured in the original nrc report (#1280485). The station was placed into service in 2016. After the incident of june 19, 2020. An engineering cost analysis was performed for the station and it was determined that the station is no longer needed for system reliability. Thus the preliminary plan is to retire the station. A new station may be constructed at the location if future operational needs require it.
Detailed record list
Occurred At
2020-06-19 17:00:00
Year
2020
Report Received Date
2020-07-15 00:00:00
Iyear
2020.0
Report Number
20200064.0
Supplemental Number
34040.0
Report Type
Original 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
2020-06-19 17:00:00
Location Street Address
Okatie Hwy (Sc Hwy 46) At Intersection Of New River Trail
Location City Name
Bluffton
Location County Name
Beaufort
Location State Abbreviation
SC
Location Postal Code
29910
Location Latitude
32.244389
Location Longitude
-80.999985
Nrc Rpt Datetime
2020-06-25 14:39:00
Nrc Rpt Num
1280381
Commodity Released Type
Natural Gas
Unintentional Release
6996.1
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2020-06-19 17:00:00
On Site Datetime
2020-06-19 17:33:00
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set)
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Other
System Part Details
Valve Station
Installation Year
2016.0
Material Involved
Steel
Steel Seam Type
Other
Steel Seam Type Details
Erw
Wt Steel
0.28
Release Type
Other
Release Type Details
A Tree Fell On A 2-In Titan Y Class 600 Strainer, Which Caused The Gas To Release From Two Locations (Upstream And Downstream) From Two, Approximately 2 Inch, Pipe Openings.
Class Location Type
Class 3 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
85000.0
Est Cost Emergency
2500.0
Est Cost Other
14500.0
Est Cost Other Details
To Retire Station: Material $2000 Labor $5000 Tree Removal: $7500
Est Cost Unintentional Release
14000.0
Prpty
116000.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
300.0
Normal Psig
300.0
Mop Psig
587.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
Yes
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
No investigation was needed, as the control room was functioning properly and was able to confirm the original notification which was initiated by operations personnel. The control room did not have remote control over the valve station - only monitoring capabilities. There were no contributing factors from the control room that impacted the incident.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Natural Force Damage
Cause Details
High Winds
Natural Force Type
High Winds
Nf Other Details
,,,
Nf Extreme Weather Ind
No
Preparer Name
J***** F***
Preparer Title
Engineer Iv Pipeline Compliance
Preparer Email
J**********@d*************.com
Preparer Telephone
8032603602
Authorizer Name
G*** M********
Authorizer Title
Gm Of Construction And Operations And Maintenance
Authorizer Telephone
8032177346
Authorizer Email
G*************@d*************.com
Narrative
On june 19, 2020, at approximately 5:00 pm local time, in okatie, sc, a severe thunderstorm with high winds caused two trees to fall onto the hwy 46 valve station. The damage severed an above-ground 2-in steel strainer on the valve station. It is estimated that approximately 6996.1 mcf of natural gas was lost during the leak. The leak was stopped at approximately 9:42 pm, and temporary repairs were made to the station. During this time okatie hwy (sc hwy 46) was closed in both directions. The initial nrc incident report number was 1280381. On, june 26, 2020 a follow-up report was made to the nrc to give corrections to the information captured in the original nrc report (#1280485). The station was placed into service in 2016. After the incident of june 19, 2020. An engineering cost analysis was performed for the station and it was determined that the station is no longer needed for system reliability. Thus the preliminary plan is to retire the station. A new station may be constructed at the location if future operational needs require it.
| Occurred At | 2020-06-19 17:00:00 |
|---|---|
| Year | 2020 |
| Report Received Date | 2020-07-15 00:00:00 |
| Iyear | 2020.0 |
| Report Number | 20200064.0 |
| Supplemental Number | 34040.0 |
| Report Type | Original 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 | 2020-06-19 17:00:00 |
| Location Street Address | Okatie Hwy (Sc Hwy 46) At Intersection Of New River Trail |
| Location City Name | Bluffton |
| Location County Name | Beaufort |
| Location State Abbreviation | SC |
| Location Postal Code | 29910 |
| Location Latitude | 32.244389 Google Maps OpenStreetMap |
| Location Longitude | -80.999985 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2020-06-25 14:39:00 |
| Nrc Rpt Num | 1280381 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 6996.1 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2020-06-19 17:00:00 |
| On Site Datetime | 2020-06-19 17:33:00 |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance (E.g. Value Or Regulator Station, Outdoor Meter Set) |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Other |
| System Part Details | Valve Station |
| Installation Year | 2016.0 |
| Material Involved | Steel |
| Steel Seam Type | Other |
| Steel Seam Type Details | Erw |
| Wt Steel | 0.28 |
| Release Type | Other |
| Release Type Details | A Tree Fell On A 2-In Titan Y Class 600 Strainer, Which Caused The Gas To Release From Two Locations (Upstream And Downstream) From Two, Approximately 2 Inch, Pipe Openings. |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 85000.0 |
| Est Cost Emergency | 2500.0 |
| Est Cost Other | 14500.0 |
| Est Cost Other Details | To Retire Station: Material $2000 Labor $5000 Tree Removal: $7500 |
| Est Cost Unintentional Release | 14000.0 |
| Prpty | 116000.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 300.0 |
| Normal Psig | 300.0 |
| Mop Psig | 587.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | Yes |
| 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 | No investigation was needed, as the control room was functioning properly and was able to confirm the original notification which was initiated by operations personnel. The control room did not have remote control over the valve station - only monitoring capabilities. There were no contributing factors from the control room that impacted the incident. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Natural Force Damage |
| Cause Details | High Winds |
| Natural Force Type | High Winds |
| Nf Other Details | ,,, |
| Nf Extreme Weather Ind | No |
| Preparer Name | J***** F*** |
| Preparer Title | Engineer Iv Pipeline Compliance |
| Preparer Email | J**********@d*************.com |
| Preparer Telephone | 8032603602 |
| Authorizer Name | G*** M******** |
| Authorizer Title | Gm Of Construction And Operations And Maintenance |
| Authorizer Telephone | 8032177346 |
| Authorizer Email | G*************@d*************.com |
| Narrative | On june 19, 2020, at approximately 5:00 pm local time, in okatie, sc, a severe thunderstorm with high winds caused two trees to fall onto the hwy 46 valve station. The damage severed an above-ground 2-in steel strainer on the valve station. It is estimated that approximately 6996.1 mcf of natural gas was lost during the leak. The leak was stopped at approximately 9:42 pm, and temporary repairs were made to the station. During this time okatie hwy (sc hwy 46) was closed in both directions. The initial nrc incident report number was 1280381. On, june 26, 2020 a follow-up report was made to the nrc to give corrections to the information captured in the original nrc report (#1280485). The station was placed into service in 2016. After the incident of june 19, 2020. An engineering cost analysis was performed for the station and it was determined that the station is no longer needed for system reliability. Thus the preliminary plan is to retire the station. A new station may be constructed at the location if future operational needs require it. |
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