Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2021-11-08 — TX
Operator
Exxonmobil Pipeline Co
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)
$12,029
Incident datetime
2021-11-08 17:20
Report number
Location
TX
Narrative
Timeline: on monday, 8 november 2021 at approximately 17:20, operations dispatched a crew to aldine station due to unrelated activities and discovered moist soil between slop tank #2238 and tank #2064. Background information: the release occurred on the 2" sump discharge line just inside of the dike wall near tank #2238. The pipe was nps 2, standard wall (0.154"), erw of unknown grade with coal tar coating that was installed in 1966. The release occurred at the 3 o'clock location of the pipe. The pressure in the sump discharge line at the time of the release was approximately 10 psi due to slop tank head pressure. A two foot section of the sump discharge line where the release occurred was sectioned from the line by cold cut and sent to a laboratory for examination. Release volume calculations: the release volume was calculated by engineering to be 57 bbl. Based upon slop tank gauge data collected from scada. Metallurgical failure mechanism: the sump discharge line failed due to internal corrosion. The failure likely initiated as a pit and grew until through wall. There was no evidence of significant external corrosion. Cathodic protection readings for the area were confirmed to be adequate. Prevention of reoccurrence: this sump discharge line is out of service to be replaced. 5/26/2022 - created supplemental final report with update for additional questions and updated the costs for the release.
Detailed record list
Report Received Date
2021-12-06 00:00:00
Iyear
2021
Report Number
20210344
Supplemental Number
36701
Report Type
Supplemental Final
Operator Id
4906
Name
Exxonmobil Pipeline Co
Operator Street Address
22777 Springwoods Village Parkway E2.2b-Emp
Operator City Name
Spring
Operator State Abbreviation
TX
Operator Postal Code
77389
Local Datetime
2021-11-08 17:20:00
Time Zone
Central
Daylight Savings Ind
No
Location Latitude
29.886246
Location Longitude
-95.374234
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
57
Recovered Bbls
32
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2021-11-08 17:20:00
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
Shutdown Datetime
2021-11-08 17:25:00
Restart Datetime
2021-11-09 08:10:00
Communication State Fed Ind
Yes
Party Initiated Communication
Operator
Initial Responder Com Datetime
2021-11-08 18:09:00
On Site Datetime
2021-11-08 17:20:00
Confirmed Discovery Datetime
2021-11-08 17:20:00
Nrc Rpt Datetime
2021-11-08 18:10:00
Nrc Rpt Num
1321500
Additional Nrc Report Numbers
1321682
Ignite Ind
No
Notify Qualified Indiv Ind
Yes
Qualified Indiv Notif Datetime
2021-11-08 17:15:00
Oil Spill Removal Org Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Aldine Station
Segment Name
Aldine Station
Onshore State Abbreviation
Tx
Onshore Postal Code
77037
Onshore City Name
Houston
Onshore County Name
Harris
Designated Location
Milepost
Designated Name
0
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
Intrastate
Item Involved
Drain Lines
Installation Year
1966
Manufactured Year
1966
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
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
668
Est Cost Prop Damage
12029
Est Cost Emergency
2500
Est Cost Environmental
170000
Est Cost Other
7683
Est Cost Other Details
Cost Of Temporary Operations Including A Frac Tank And Temporary Piping.
Prpty
192880
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
10
Mop Psig
275
Mop Cfr Section
Component Design Pressure �195.406(A)(2)
Maop Established Date
2014-01-26 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
Yes
Cpm In Place Ind
No
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest No Schedule Ind
Yes
Invest No Schedule Ind Details
There Were No Contributing Factors For This Accident Related To The Controller
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
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 Water Acid Ind
Yes
Int Metallurgical Basis Ind
Yes
Int Other Loc Ind
Yes
Corrosion Location Details
3:00 Position Of Pipe
Corrosion Inhibitors
No
Corrosion Lining
No
Cleaning Dewatering
Not Applicable - Not Mainline Pipe
Corrosion Coupons
Not Applicable - Not Mainline Pipe
Preparer Name
R***** P S**********
Preparer Title
Pipeline Safety Advisor
Preparer Email
R*******************@e*********.com
Preparer Telephone
832-625-3838
Prepared Date
2022-05-26 00:00:00
Authorizer Name
C******* B H********
Authorizer Telephone
832-624-7920
Authorizer Title
Empco Sshe Manager
Authorizer Email
C*******************@e*********.com
Narrative
Timeline: on monday, 8 november 2021 at approximately 17:20, operations dispatched a crew to aldine station due to unrelated activities and discovered moist soil between slop tank #2238 and tank #2064. Background information: the release occurred on the 2" sump discharge line just inside of the dike wall near tank #2238. The pipe was nps 2, standard wall (0.154"), erw of unknown grade with coal tar coating that was installed in 1966. The release occurred at the 3 o'clock location of the pipe. The pressure in the sump discharge line at the time of the release was approximately 10 psi due to slop tank head pressure. A two foot section of the sump discharge line where the release occurred was sectioned from the line by cold cut and sent to a laboratory for examination. Release volume calculations: the release volume was calculated by engineering to be 57 bbl. Based upon slop tank gauge data collected from scada. Metallurgical failure mechanism: the sump discharge line failed due to internal corrosion. The failure likely initiated as a pit and grew until through wall. There was no evidence of significant external corrosion. Cathodic protection readings for the area were confirmed to be adequate. Prevention of reoccurrence: this sump discharge line is out of service to be replaced. 5/26/2022 - created supplemental final report with update for additional questions and updated the costs for the release.
| Report Received Date | 2021-12-06 00:00:00 |
|---|---|
| Iyear | 2021 |
| Report Number | 20210344 |
| Supplemental Number | 36701 |
| Report Type | Supplemental Final |
| Operator Id | 4906 PHMSA Enforcement |
| Name | Exxonmobil Pipeline Co |
| Operator Street Address | 22777 Springwoods Village Parkway E2.2b-Emp |
| Operator City Name | Spring |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77389 |
| Local Datetime | 2021-11-08 17:20:00 |
| Time Zone | Central |
| Daylight Savings Ind | No |
| Location Latitude | 29.886246 Google Maps OpenStreetMap |
| Location Longitude | -95.374234 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 | 57 |
| Recovered Bbls | 32 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2021-11-08 17:20:00 |
| 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 |
| Shutdown Datetime | 2021-11-08 17:25:00 |
| Restart Datetime | 2021-11-09 08:10:00 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Operator |
| Initial Responder Com Datetime | 2021-11-08 18:09:00 |
| On Site Datetime | 2021-11-08 17:20:00 |
| Confirmed Discovery Datetime | 2021-11-08 17:20:00 |
| Nrc Rpt Datetime | 2021-11-08 18:10:00 |
| Nrc Rpt Num | 1321500 NRC Report How to search |
| Additional Nrc Report Numbers | 1321682 |
| Ignite Ind | No |
| Notify Qualified Indiv Ind | Yes |
| Qualified Indiv Notif Datetime | 2021-11-08 17:15:00 |
| Oil Spill Removal Org Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Aldine Station |
| Segment Name | Aldine Station |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77037 |
| Onshore City Name | Houston |
| Onshore County Name | Harris |
| Designated Location | Milepost |
| Designated Name | 0 |
| 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 | Intrastate |
| Item Involved | Drain Lines |
| Installation Year | 1966 |
| Manufactured Year | 1966 |
| 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 | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 668 |
| Est Cost Prop Damage | 12029 |
| Est Cost Emergency | 2500 |
| Est Cost Environmental | 170000 |
| Est Cost Other | 7683 |
| Est Cost Other Details | Cost Of Temporary Operations Including A Frac Tank And Temporary Piping. |
| Prpty | 192880 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 10 |
| Mop Psig | 275 |
| Mop Cfr Section | Component Design Pressure �195.406(A)(2) View CFR 49 §192 |
| Maop Established Date | 2014-01-26 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 | Yes |
| Cpm In Place Ind | No |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest No Schedule Ind | Yes |
| Invest No Schedule Ind Details | There Were No Contributing Factors For This Accident Related To The Controller |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| 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 Water Acid Ind | Yes |
| Int Metallurgical Basis Ind | Yes |
| Int Other Loc Ind | Yes |
| Corrosion Location Details | 3:00 Position Of Pipe |
| Corrosion Inhibitors | No |
| Corrosion Lining | No |
| Cleaning Dewatering | Not Applicable - Not Mainline Pipe |
| Corrosion Coupons | Not Applicable - Not Mainline Pipe |
| Preparer Name | R***** P S********** |
| Preparer Title | Pipeline Safety Advisor |
| Preparer Email | R*******************@e*********.com |
| Preparer Telephone | 832-625-3838 |
| Prepared Date | 2022-05-26 00:00:00 |
| Authorizer Name | C******* B H******** |
| Authorizer Telephone | 832-624-7920 |
| Authorizer Title | Empco Sshe Manager |
| Authorizer Email | C*******************@e*********.com |
| Narrative | Timeline: on monday, 8 november 2021 at approximately 17:20, operations dispatched a crew to aldine station due to unrelated activities and discovered moist soil between slop tank #2238 and tank #2064. Background information: the release occurred on the 2" sump discharge line just inside of the dike wall near tank #2238. The pipe was nps 2, standard wall (0.154"), erw of unknown grade with coal tar coating that was installed in 1966. The release occurred at the 3 o'clock location of the pipe. The pressure in the sump discharge line at the time of the release was approximately 10 psi due to slop tank head pressure. A two foot section of the sump discharge line where the release occurred was sectioned from the line by cold cut and sent to a laboratory for examination. Release volume calculations: the release volume was calculated by engineering to be 57 bbl. Based upon slop tank gauge data collected from scada. Metallurgical failure mechanism: the sump discharge line failed due to internal corrosion. The failure likely initiated as a pit and grew until through wall. There was no evidence of significant external corrosion. Cathodic protection readings for the area were confirmed to be adequate. Prevention of reoccurrence: this sump discharge line is out of service to be replaced. 5/26/2022 - created supplemental final report with update for additional questions and updated the costs for the release. |
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