Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2023-07-29 — TX
Operator
Citgo Refining & Chemical Co. L.p.
Cause
Corrosion 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)
$150,000
Incident datetime
2023-07-29 00:00 UTC
Report number
Location
TX
Narrative
At approximately 1830 on june 28, 2023, citgo personal observed a stain on the ground at n27.8177 / w-97.43118 approximately 30 feet north of citgo's 204 area fence line. This location is often frequented by tractor trailers and other heavy equipment prior to entering the facility which made determining the source of the stain questionable. This location is also a major right or way for other third-party pipelines. On the morning of the june 29, 2023, it was decided to excavate for further investigation. At 0900 an 811 call was submitted to inform the other pipeline operators in the area of a possible leak in the area and of our intentions for further investigation. The initial call to the nrc was placed at 1115 and excavation operations commenced. At 1348 the diesel transfer was halted and the citgo's po3 casa pipeline was isolated upstream and downstream. Excavation and investigation operations proceeded throughout the night to determine a leak source. On june 30, 2023 at 1745 the po3 casa pipeline was identified as the source of the leak. A 48-hour update to the nrc was called soon after at 2046. The leak was identified to be, isolated external corrosion with a pinhole through-wall failure. This was due to a coating failure, the po3 pipeline had the original bitumastic coating. The cause of the coating failure was contributed to the age of the coating. A pressure test was conducted on september 29, 2019. An initial spike test of 139% (405 psig), of the mop was held for at least 30 minutes. Following the spike test, a test pressure of 125% (365 psig), of the mop was held for at least 4 continuous hours. Since the entire line is not visible, the pressure was held at 110% (360 psig), of the mop for at least 4 additional hours. The po3 is under cathodic protection. Potentials from previous annual reports were depressed but still in acceptable range above the -850 mv pipe to soil threshold. Results of the close interval survey, prior to wrap being installed, showed a drop below the -850mv threshold at the incident sight and no indication of stray current. As a result a current requirement test was required to determine additional current requirements. Results of the current requirement test, after wrap was installed, determined that pipe to soil potentials had rose above the -850mv threshold and additional current was not needed. The scada system was functional and operating at the time of the event, however, did not indicate any issue due to the small leak. The incident resulted in an unintentional release of .66 barrels to soil. The volume was calculated based on time discovered, pressure of the pipeline, and size of the pinhole. Thickness readings were taken around the leak location, all readings were nominal. As per asme b31.4 an engineered clamp was installed on july 1, 2023. The pipeline was leak tested and put back into service at 1436.
Detailed record list
Report Received Date
2023-07-29 00:00:00
Iyear
2023
Report Number
20230174
Supplemental Number
39312
Report Type
Supplemental Final
Operator Id
31023
Name
Citgo Refining & Chemical Co. L.p.
Operator Street Address
1293 Eldridge Parkway
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77077
Time Zone
Central
Daylight Savings Ind
No
Location Latitude
27.812217
Location Longitude
-97.431167
Commodity Released Type
Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions
Commodity Subtype
Diesel, Fuel Oil, Kerosene, Jet Fuel
Unintentional Release Bbls
0.66
Recovered Bbls
0.66
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 Pipeline, Including Valve Sites
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
1371610
Additional Nrc Report Numbers
1371818
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Type Ind
Manual
Downstream Action Taken
Valve Closure
Downstream Valve Type Ind
Manual
Notify Qualified Indiv Ind
Yes
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Casa Pipeline
Segment Name
P03
Onshore State Abbreviation
Tx
Onshore Postal Code
78404
Onshore City Name
Corpus Christi
Onshore County Name
Nueces
Designated Location
Milepost
Designated Name
1
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
96
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Pipe
Pipe Type
Pipe Body
Puddle Weld Ind
No
Pipe Diameter
8.625
Pipe Wall Thickness
0.25
Pipe Smys
24000
Pipe Specification
Unknown
Pipe Seam Type
Erw � Unknown Frequency
Pipe Manufacturer
Unknown
Pipe Coating Type
Coal Tar
Coating Applied Ind
No
Installation Year
Unknown
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
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
High Pop Ind
Yes
High Pop Yes No
No
Est Cost Oper Paid
0
Est Cost Gas Released
61
Est Cost Prop Damage
150000
Est Cost Emergency
0
Est Cost Environmental
25000
Est Cost Other
0
Prpty
175061
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
191
Mop Psig
285
Mop Cfr Section
Four Hour Test Or Operation �195.406(A)(5)
Maop Established Date
2019-09-29 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
8448
Internal Inspection Ind
Yes
Operation Complications 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 leak being small and undetectable by scada system
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
Localized Pitting
Other Corrosion Ind
Yes
Corrosion Type Details
Coating Disbondment Due To Aging / Deterioration.
Field Exam Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
2000
Shielding Evident
Yes
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Close Interval Survey Ind
Yes
Other Cp Survey Ind
Yes
Cp Annual Survey Year
2022
Close Interval Survey Year
2023
Other Cp Survey Year
2023
Other Cp Survey Details
Current Requirement Test To Determine If Rectifier Would Be Needed At Incident Location
Prior Damage
Yes
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
2019
Hydrtst Most Rcnt Pressure
365
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
D**** R S******
Preparer Title
Process Safety Management Advisor
Preparer Email
D******@c****.com
Preparer Telephone
361-844-4020
Prepared Date
2024-03-11 00:00:00
Local Contact Name
D**** R S******
Local Contact Email
D******@c****.com
Local Contact Telephone
361-844-4020
Authorizer Name
D**** R S******
Authorizer Telephone
361-844-4020
Authorizer Title
Process Safety Management Advisor
Authorizer Email
D******@c****.com
Narrative
At approximately 1830 on june 28, 2023, citgo personal observed a stain on the ground at n27.8177 / w-97.43118 approximately 30 feet north of citgo's 204 area fence line. This location is often frequented by tractor trailers and other heavy equipment prior to entering the facility which made determining the source of the stain questionable. This location is also a major right or way for other third-party pipelines. On the morning of the june 29, 2023, it was decided to excavate for further investigation. At 0900 an 811 call was submitted to inform the other pipeline operators in the area of a possible leak in the area and of our intentions for further investigation. The initial call to the nrc was placed at 1115 and excavation operations commenced. At 1348 the diesel transfer was halted and the citgo's po3 casa pipeline was isolated upstream and downstream. Excavation and investigation operations proceeded throughout the night to determine a leak source. On june 30, 2023 at 1745 the po3 casa pipeline was identified as the source of the leak. A 48-hour update to the nrc was called soon after at 2046. The leak was identified to be, isolated external corrosion with a pinhole through-wall failure. This was due to a coating failure, the po3 pipeline had the original bitumastic coating. The cause of the coating failure was contributed to the age of the coating. A pressure test was conducted on september 29, 2019. An initial spike test of 139% (405 psig), of the mop was held for at least 30 minutes. Following the spike test, a test pressure of 125% (365 psig), of the mop was held for at least 4 continuous hours. Since the entire line is not visible, the pressure was held at 110% (360 psig), of the mop for at least 4 additional hours. The po3 is under cathodic protection. Potentials from previous annual reports were depressed but still in acceptable range above the -850 mv pipe to soil threshold. Results of the close interval survey, prior to wrap being installed, showed a drop below the -850mv threshold at the incident sight and no indication of stray current. As a result a current requirement test was required to determine additional current requirements. Results of the current requirement test, after wrap was installed, determined that pipe to soil potentials had rose above the -850mv threshold and additional current was not needed. The scada system was functional and operating at the time of the event, however, did not indicate any issue due to the small leak. The incident resulted in an unintentional release of .66 barrels to soil. The volume was calculated based on time discovered, pressure of the pipeline, and size of the pinhole. Thickness readings were taken around the leak location, all readings were nominal. As per asme b31.4 an engineered clamp was installed on july 1, 2023. The pipeline was leak tested and put back into service at 1436.
| Report Received Date | 2023-07-29 00:00:00 |
|---|---|
| Iyear | 2023 |
| Report Number | 20230174 |
| Supplemental Number | 39312 |
| Report Type | Supplemental Final |
| Operator Id | 31023 PHMSA Enforcement |
| Name | Citgo Refining & Chemical Co. L.p. |
| Operator Street Address | 1293 Eldridge Parkway |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77077 |
| Time Zone | Central |
| Daylight Savings Ind | No |
| Location Latitude | 27.812217 Google Maps OpenStreetMap |
| Location Longitude | -97.431167 Google Maps OpenStreetMap |
| Commodity Released Type | Refined And/or Petroleum Product (Non-Hvl) Which Is A Liquid At Ambient Conditions |
| Commodity Subtype | Diesel, Fuel Oil, Kerosene, Jet Fuel |
| Unintentional Release Bbls | 0.66 |
| Recovered Bbls | 0.66 |
| 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 Pipeline, Including Valve Sites |
| 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 | 1371610 NRC Report How to search |
| Additional Nrc Report Numbers | 1371818 |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Type Ind | Manual |
| Downstream Action Taken | Valve Closure |
| Downstream Valve Type Ind | Manual |
| Notify Qualified Indiv Ind | Yes |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Casa Pipeline |
| Segment Name | P03 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 78404 |
| Onshore City Name | Corpus Christi |
| Onshore County Name | Nueces |
| Designated Location | Milepost |
| Designated Name | 1 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 96 |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Puddle Weld Ind | No |
| Pipe Diameter | 8.625 |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 24000 |
| Pipe Specification | Unknown |
| Pipe Seam Type | Erw � Unknown Frequency |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Coal Tar |
| Coating Applied Ind | No |
| Installation Year | Unknown |
| 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 | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 61 |
| Est Cost Prop Damage | 150000 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 25000 |
| Est Cost Other | 0 |
| Prpty | 175061 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 191 |
| Mop Psig | 285 |
| Mop Cfr Section | Four Hour Test Or Operation �195.406(A)(5) View CFR 49 §192 |
| Maop Established Date | 2019-09-29 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 8448 |
| Internal Inspection Ind | Yes |
| Operation Complications 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 leak being small and undetectable by scada system |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | Localized Pitting |
| Other Corrosion Ind | Yes |
| Corrosion Type Details | Coating Disbondment Due To Aging / Deterioration. |
| Field Exam Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 2000 |
| Shielding Evident | Yes |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Close Interval Survey Ind | Yes |
| Other Cp Survey Ind | Yes |
| Cp Annual Survey Year | 2022 |
| Close Interval Survey Year | 2023 |
| Other Cp Survey Year | 2023 |
| Other Cp Survey Details | Current Requirement Test To Determine If Rectifier Would Be Needed At Incident Location |
| Prior Damage | Yes |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 2019 |
| Hydrtst Most Rcnt Pressure | 365 |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | D**** R S****** |
| Preparer Title | Process Safety Management Advisor |
| Preparer Email | D******@c****.com |
| Preparer Telephone | 361-844-4020 |
| Prepared Date | 2024-03-11 00:00:00 |
| Local Contact Name | D**** R S****** |
| Local Contact Email | D******@c****.com |
| Local Contact Telephone | 361-844-4020 |
| Authorizer Name | D**** R S****** |
| Authorizer Telephone | 361-844-4020 |
| Authorizer Title | Process Safety Management Advisor |
| Authorizer Email | D******@c****.com |
| Narrative | At approximately 1830 on june 28, 2023, citgo personal observed a stain on the ground at n27.8177 / w-97.43118 approximately 30 feet north of citgo's 204 area fence line. This location is often frequented by tractor trailers and other heavy equipment prior to entering the facility which made determining the source of the stain questionable. This location is also a major right or way for other third-party pipelines. On the morning of the june 29, 2023, it was decided to excavate for further investigation. At 0900 an 811 call was submitted to inform the other pipeline operators in the area of a possible leak in the area and of our intentions for further investigation. The initial call to the nrc was placed at 1115 and excavation operations commenced. At 1348 the diesel transfer was halted and the citgo's po3 casa pipeline was isolated upstream and downstream. Excavation and investigation operations proceeded throughout the night to determine a leak source. On june 30, 2023 at 1745 the po3 casa pipeline was identified as the source of the leak. A 48-hour update to the nrc was called soon after at 2046. The leak was identified to be, isolated external corrosion with a pinhole through-wall failure. This was due to a coating failure, the po3 pipeline had the original bitumastic coating. The cause of the coating failure was contributed to the age of the coating. A pressure test was conducted on september 29, 2019. An initial spike test of 139% (405 psig), of the mop was held for at least 30 minutes. Following the spike test, a test pressure of 125% (365 psig), of the mop was held for at least 4 continuous hours. Since the entire line is not visible, the pressure was held at 110% (360 psig), of the mop for at least 4 additional hours. The po3 is under cathodic protection. Potentials from previous annual reports were depressed but still in acceptable range above the -850 mv pipe to soil threshold. Results of the close interval survey, prior to wrap being installed, showed a drop below the -850mv threshold at the incident sight and no indication of stray current. As a result a current requirement test was required to determine additional current requirements. Results of the current requirement test, after wrap was installed, determined that pipe to soil potentials had rose above the -850mv threshold and additional current was not needed. The scada system was functional and operating at the time of the event, however, did not indicate any issue due to the small leak. The incident resulted in an unintentional release of .66 barrels to soil. The volume was calculated based on time discovered, pressure of the pipeline, and size of the pinhole. Thickness readings were taken around the leak location, all readings were nominal. As per asme b31.4 an engineered clamp was installed on july 1, 2023. The pipeline was leak tested and put back into service at 1436. |
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