Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2024-12-23 — GA
Operator
Colonial Pipeline Co
Cause
Equipment Failure
Commodity
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$40,000
Incident datetime
2024-12-23 00:00 UTC
Report number
Location
GA
Narrative
On 12/02/24 @ approximately 10:45 am, product was discovered dripping from a leak detection jar near unit 2. Unit 2 was then shut down. The leak detection jar was removed, emptied, cleaned and replaced.�product continued to drip into the leak detection jar.� upon further investigation, product was found in a 24" well near unit 2. Notification was then made to shut-down and isolate the booster station. Spill response personnel were mobilized and when they arrived, began exploration excavation around unit 2. Once fully excavated, the cause was determined to be a stem seal leak on unit 2 check valve.� repairs were completed and the booster station was returned to normal operations on 12/03/24� all released product was contained on cpc property. Update 2/3/25 an investigation was completed, and the cause has been updated. The investigation revealed the point of product release was a damaged o-ring on the unit 2 check valve leak detection jar. Contributing factors identified were an upstream unit 2 check valve stem seal leak that allowed product to flow to the leak detection jar and a downstream drain line check valve failure that prevented pressure and product to flow to the sump. With pressure and product building from both directions, an already damaged o-ring on the leak detection jar allowed product to be released.
Detailed record list
Report Received Date
2024-12-23 00:00:00
Iyear
2024
Report Number
20240298
Supplemental Number
40477
Report Type
Supplemental Final
Operator Id
2552
Name
Colonial Pipeline Co
Operator Street Address
1000 Lake St.
Operator City Name
Alpharetta
Operator State Abbreviation
GA
Operator Postal Code
30009
Time Zone
Eastern
Daylight Savings Ind
No
Location Latitude
37.1581242
Location Longitude
-78.8347518
Commodity Released Type
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Commodity Subtype
Mixture Of Refined Products (Transmix Or Other Mixture)
Unintentional Release Bbls
0.29
Recovered Bbls
0.29
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
Yes
Communication State Fed Ind
No
Nrc Rpt Num
1417786
Additional Nrc Report Numbers
1417921
Ignite Ind
No
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
Yes
Osro Arrived On Site Dt
12/2/2024 17:57
Num Pub Evacuated
0
Pipe Fac Name
Colonial Pipeline
Segment Name
Hancock Station
Onshore State Abbreviation
Va
Onshore Postal Code
23923
Onshore City Name
Charlotte Courthouse
Onshore County Name
Charlotte
Designated Location
Milepost
Designated Name
921
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
24
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Other
Item Involved Details
O-Ring In Leak Detection Jar
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Material Other Than Carbon Steel
Material Details
Fluoropolymer Elastomer (Viton)
Release Type
Leak
Leak Type
Seal Or Packing
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
150
Est Cost Prop Damage
40000
Est Cost Emergency
53000
Est Cost Environmental
0
Est Cost Other
0
Prpty
93150
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
365
Mop Psig
936
Mop Cfr Section
Internal Design Pressure �195.406(A)(1)
Maop Established Date
1979-09-26 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
No
Cpm Conf Ind
No
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
Not a cause or contributing factor
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Non-Threaded Connection Failure
Eq Failure Type
Non-Threaded Connection Failure
Other Non Threaded Ind
O-Ring
Eq Additional Other Ind
Yes
Eq Additional Other Details
Leak Detection Jar O-Ring Failed Due To Pressure Build Up In Drain Line
Preparer Name
A**** T***********
Preparer Title
Senior Compliance Specialist
Preparer Email
A******@c******.com
Preparer Telephone
7034055501
Prepared Date
2025-02-05 00:00:00
Authorizer Name
Q****** F******
Authorizer Telephone
7706879672
Authorizer Title
Director Pipeline Compliance
Authorizer Email
Q*******@c******.com
Narrative
O***********@ approximately 10:45 am, product was discovered dripping from a leak detection jar near unit 2. Unit 2 was then shut down. The leak detection jar was removed, emptied, cleaned and replaced.�product continued to drip into the leak detection jar.� upon further investigation, product was found in a 24" well near unit 2. Notification was then made to shut-down and isolate the booster station. Spill response personnel were mobilized and when they arrived, began exploration excavation around unit 2. Once fully excavated, the cause was determined to be a stem seal leak on unit 2 check valve.� repairs were completed and the booster station was returned to normal operations on 12/03/24� all released product was contained on cpc property. Update 2/3/25 an investigation was completed, and the cause has been updated. The investigation revealed the point of product release was a damaged o-ring on the unit 2 check valve leak detection jar. Contributing factors identified were an upstream unit 2 check valve stem seal leak that allowed product to flow to the leak detection jar and a downstream drain line check valve failure that prevented pressure and product to flow to the sump. *******************************************************************************************************************************************.
| Report Received Date | 2024-12-23 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240298 |
| Supplemental Number | 40477 |
| Report Type | Supplemental Final |
| Operator Id | 2552 PHMSA Enforcement |
| Name | Colonial Pipeline Co |
| Operator Street Address | 1000 Lake St. |
| Operator City Name | Alpharetta |
| Operator State Abbreviation | GA |
| Operator Postal Code | 30009 |
| Time Zone | Eastern |
| Daylight Savings Ind | No |
| Location Latitude | 37.1581242 Google Maps OpenStreetMap |
| Location Longitude | -78.8347518 Google Maps OpenStreetMap |
| Commodity Released Type | Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions |
| Commodity Subtype | Mixture Of Refined Products (Transmix Or Other Mixture) |
| Unintentional Release Bbls | 0.29 |
| Recovered Bbls | 0.29 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Communication State Fed Ind | No |
| Nrc Rpt Num | 1417786 NRC Report How to search |
| Additional Nrc Report Numbers | 1417921 |
| Ignite Ind | No |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | Yes |
| Osro Arrived On Site Dt | 12/2/2024 17:57 |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Colonial Pipeline |
| Segment Name | Hancock Station |
| Onshore State Abbreviation | Va |
| Onshore Postal Code | 23923 |
| Onshore City Name | Charlotte Courthouse |
| Onshore County Name | Charlotte |
| Designated Location | Milepost |
| Designated Name | 921 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 24 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Other |
| Item Involved Details | O-Ring In Leak Detection Jar |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Fluoropolymer Elastomer (Viton) |
| Release Type | Leak |
| Leak Type | Seal Or Packing |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 150 |
| Est Cost Prop Damage | 40000 |
| Est Cost Emergency | 53000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 93150 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 365 |
| Mop Psig | 936 |
| Mop Cfr Section | Internal Design Pressure �195.406(A)(1) View CFR 49 §192 |
| Maop Established Date | 1979-09-26 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | No |
| Cpm Conf Ind | No |
| 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 | Not a cause or contributing factor |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Non-Threaded Connection Failure |
| Eq Failure Type | Non-Threaded Connection Failure |
| Other Non Threaded Ind | O-Ring |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Leak Detection Jar O-Ring Failed Due To Pressure Build Up In Drain Line |
| Preparer Name | A**** T*********** |
| Preparer Title | Senior Compliance Specialist |
| Preparer Email | A******@c******.com |
| Preparer Telephone | 7034055501 |
| Prepared Date | 2025-02-05 00:00:00 |
| Authorizer Name | Q****** F****** |
| Authorizer Telephone | 7706879672 |
| Authorizer Title | Director Pipeline Compliance |
| Authorizer Email | Q*******@c******.com |
| Narrative | O***********@ approximately 10:45 am, product was discovered dripping from a leak detection jar near unit 2. Unit 2 was then shut down. The leak detection jar was removed, emptied, cleaned and replaced.�product continued to drip into the leak detection jar.� upon further investigation, product was found in a 24" well near unit 2. Notification was then made to shut-down and isolate the booster station. Spill response personnel were mobilized and when they arrived, began exploration excavation around unit 2. Once fully excavated, the cause was determined to be a stem seal leak on unit 2 check valve.� repairs were completed and the booster station was returned to normal operations on 12/03/24� all released product was contained on cpc property. Update 2/3/25 an investigation was completed, and the cause has been updated. The investigation revealed the point of product release was a damaged o-ring on the unit 2 check valve leak detection jar. Contributing factors identified were an upstream unit 2 check valve stem seal leak that allowed product to flow to the leak detection jar and a downstream drain line check valve failure that prevented pressure and product to flow to the sump. *******************************************************************************************************************************************. |
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