Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2025-05-21 — TX
Operator
Shell Pipeline Co., L.p.
Cause
Corrosion Failure
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$400,000
Incident datetime
2025-05-21 00:00 UTC
Report number
Location
TX
Narrative
Local operations observed a small amount of crude oil surfacing in the area at the air-to-soil interface at the suction side of the 24" tcs booster. It was decided to exploratory dig to determine if the leak source could be located. After excavation, a pinhole was located on the 6 o'clock position of the pipe. The line was isolated and the area with the leak site was cut out. Permanent repairs were made that enabled the piping to be re-routed aboveground to reduce future dead-leg corrosion risk.
Detailed record list
Report Received Date
2025-05-21 00:00:00
Iyear
2025
Report Number
20250127
Supplemental Number
40950
Report Type
Supplemental Final
Operator Id
31174
Name
Shell Pipeline Co., L.p.
Operator Street Address
150 North Dairy Ashford Road Wck Bldg. A
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77079
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
29.6207315
Location Longitude
-90.6895671
Commodity Released Type
Crude Oil
Unintentional Release Bbls
4
Recovered Bbls
4
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 Terminal/tank Farm 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
Yes
Party Initiated Communication
Operator
Nrc Rpt Num
1429368
Ignite Ind
No
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Houma Station
Segment Name
Pump Suction
Onshore State Abbreviation
La
Onshore Postal Code
70364
Onshore City Name
Houma
Onshore County Name
Terrebonne
Designated Location
Survey Station No.
Designated Name
Houma Station
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
72
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Pipe
Pipe Type
Pipe Body
Puddle Weld Ind
No
Pipe Diameter
16
Pipe Wall Thickness
0.312
Pipe Smys
42000
Pipe Specification
5l
Pipe Seam Type
Erw - Low Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Coal Tar
Coating Applied Ind
Unknown
Installation Year
1981
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
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
249
Est Cost Prop Damage
400000
Est Cost Emergency
70000
Est Cost Environmental
30000
Est Cost Other
0
Prpty
500249
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
7
Mop Psig
432
Mop Cfr Section
Internal Design Pressure �195.406(A)(1)
Maop Established Date
1981-06-01 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
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
The release size was below detection threshold and the controller acted in accordance with procedures.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
Internal Corrosion
Internal External
Internal Corrosion
Int Visual Exam Results
Localized Pitting
Int Corrosive Commodity Ind
Yes
Int Water Acid Ind
Yes
Int Microbiological Ind
Yes
Int Field Exam Basis Ind
Yes
Int Low Point Pipe Loc Ind
Yes
Int Dead Leg Loc Ind
Yes
Corrosion Inhibitors
No
Corrosion Lining
No
Cleaning Dewatering
Not Applicable - Not Mainline Pipe
Corrosion Coupons
Not Applicable - Not Mainline Pipe
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
J***** H*****
Preparer Email
J************@s****.com
Preparer Telephone
409-540-2781
Prepared Date
2025-05-27 00:00:00
Authorizer Name
D****** P****
Authorizer Telephone
936-499-0580
Authorizer Title
Integrity And Regulatory Manager
Authorizer Email
D************@s****.com
Narrative
Local operations observed a small amount of crude oil surfacing in the area at the air-to-soil interface at the suction side of the 24" tcs booster. It was decided to exploratory dig to determine if the leak source could be located. After excavation, a pinhole was located on the 6 o'clock position of the pipe. The line was isolated and the area with the leak site was cut out. Permanent repairs were made that enabled the piping to be re-routed aboveground to reduce future dead-leg corrosion risk.
| Report Received Date | 2025-05-21 00:00:00 |
|---|---|
| Iyear | 2025 |
| Report Number | 20250127 |
| Supplemental Number | 40950 |
| Report Type | Supplemental Final |
| Operator Id | 31174 PHMSA Enforcement |
| Name | Shell Pipeline Co., L.p. |
| Operator Street Address | 150 North Dairy Ashford Road Wck Bldg. A |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77079 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 29.6207315 Google Maps OpenStreetMap |
| Location Longitude | -90.6895671 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 4 |
| Recovered Bbls | 4 |
| 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 Terminal/tank Farm 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 | Yes |
| Party Initiated Communication | Operator |
| Nrc Rpt Num | 1429368 NRC Report How to search |
| Ignite Ind | No |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Houma Station |
| Segment Name | Pump Suction |
| Onshore State Abbreviation | La |
| Onshore Postal Code | 70364 |
| Onshore City Name | Houma |
| Onshore County Name | Terrebonne |
| Designated Location | Survey Station No. |
| Designated Name | Houma Station |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 72 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Puddle Weld Ind | No |
| Pipe Diameter | 16 |
| Pipe Wall Thickness | 0.312 |
| Pipe Smys | 42000 |
| Pipe Specification | 5l |
| Pipe Seam Type | Erw - Low Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Coal Tar |
| Coating Applied Ind | Unknown |
| Installation Year | 1981 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| 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 | 249 |
| Est Cost Prop Damage | 400000 |
| Est Cost Emergency | 70000 |
| Est Cost Environmental | 30000 |
| Est Cost Other | 0 |
| Prpty | 500249 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 7 |
| Mop Psig | 432 |
| Mop Cfr Section | Internal Design Pressure �195.406(A)(1) View CFR 49 §192 |
| Maop Established Date | 1981-06-01 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 | 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 | The release size was below detection threshold and the controller acted in accordance with procedures. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | Internal Corrosion |
| Internal External | Internal Corrosion |
| Int Visual Exam Results | Localized Pitting |
| Int Corrosive Commodity Ind | Yes |
| Int Water Acid Ind | Yes |
| Int Microbiological Ind | Yes |
| Int Field Exam Basis Ind | Yes |
| Int Low Point Pipe Loc Ind | Yes |
| Int Dead Leg Loc Ind | Yes |
| Corrosion Inhibitors | No |
| Corrosion Lining | No |
| Cleaning Dewatering | Not Applicable - Not Mainline Pipe |
| Corrosion Coupons | Not Applicable - Not Mainline Pipe |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | J***** H***** |
| Preparer Email | J************@s****.com |
| Preparer Telephone | 409-540-2781 |
| Prepared Date | 2025-05-27 00:00:00 |
| Authorizer Name | D****** P**** |
| Authorizer Telephone | 936-499-0580 |
| Authorizer Title | Integrity And Regulatory Manager |
| Authorizer Email | D************@s****.com |
| Narrative | Local operations observed a small amount of crude oil surfacing in the area at the air-to-soil interface at the suction side of the 24" tcs booster. It was decided to exploratory dig to determine if the leak source could be located. After excavation, a pinhole was located on the 6 o'clock position of the pipe. The line was isolated and the area with the leak site was cut out. Permanent repairs were made that enabled the piping to be re-routed aboveground to reduce future dead-leg corrosion risk. |
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