Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2018-09-21 — TX
Operator
Sfpp, Lp
Cause
Material Failure Of Pipe Or Weld
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)
$248,750
Incident datetime
2018-09-21 20:57
Report number
Location
TX
Narrative
On 9/21/18 at 20:57, while doing his shift inspections, an operator at concord noticed the leak sensor on tank cc-9 blinking. On further investigation, he noticed an odor of diesel and found that the suction/discharge line on the tank was wet, and there was staining in the sump pit area (not engineered containment) underneath the tank. The tank was drained dry and investigated internally. Two cracks were subsequently discovered in the sump area where fill lines enter the sump. The repair to the cracks entailed replacing a section of steel that was cut out and having the sump walls reinforced. Update for supplemental/final 4/16/19-an internal investigation concluded that the cracks that formed as a result of inadequate standards or design criteria as the location of the sump umbrella/deflector supports welded to the bottom plate near the sump wall securing the umbrella/deflector were installed to close, a result of poor design. Due to the functionality of typical breakout tanks including incoming flow rates, and high turnover rates, these umbrella/deflectors receive significant stress from constant normal operating procedures. 09/30/2024 - updated by PHMSA per operator approval.
Detailed record list
Report Received Date
2018-10-18 00:00:00
Iyear
2018
Report Number
20180320
Supplemental Number
31967
Report Type
Supplemental Final
Operator Id
18092
Name
Sfpp, Lp
Operator Street Address
1001 Louisiana St., Suite 1000
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2018-09-21 20:57:00
Location Latitude
38.003696
Location Longitude
-122.056236
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
0.4
Recovered Bbls
0.4
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2018-09-21 20:57:00
System Part Involved
Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Accident Was Caused By Cracks To A Single Tank, Facility Remained Operational
On Site Datetime
2018-09-21 20:57:00
Nrc Rpt Datetime
2018-09-21 20:58:00
Nrc Rpt Num
1225356
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Concord Pump Station
Segment Name
Tank 9
Onshore State Abbreviation
Ca
Onshore Postal Code
94520
Onshore City Name
Concord
Onshore County Name
Contra Costa
Designated Location
Milepost/valve Station
Designated Name
Concord Ps
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Tank, Including Attached Appurtenances
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Tank/vessel
Weld Subtype
Other
Weld Details
Sump Umbrella/deflector Support Welds
Tank Vessel Subtype
Single Bottom System
Tank Type
Atmospheric
Installation Year
1963
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Crack
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
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
Yes
Usa Ecological Ind
Yes
Usa Ecological Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
41
Est Cost Prop Damage
248750
Est Cost Emergency
0
Est Cost Environmental
8170
Est Cost Other
0
Prpty
256961
Accident Psig
11.31
Mop Psig
13.8
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
Controller's performance of a covered function did not cause or contribute to accident. Leak was discovered by operator on shift inspection.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Material Failure Of Pipe Or Weld
Cause Details
Design-, Construction-, Installation-, Or Fabrication-Related
Field Exam Ind
Yes
Failure Type
Design-, Construction-, Installation-, Or Fabrication-Related
Fatigue Vibr Related
Yes
Failure Subtype
Other
Fatigue Vibr Related Other
Cyclical Stresses From High Turnover And Fill Rate
Additional Crack Ind
Yes
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
Yes
Exm Handl Ultrasonic Rcnt Year
2018
Exm Wet Mgnt Partcl Rcnt Year
2018
Exm Handl Ultrasonic Rcnt Ind
Yes
Exm Wet Mgnt Partcl Rcnt Ind
Yes
Preparer Name
W*** S******
Preparer Title
Pipeline Technical Specialist
Preparer Email
W***********@k***********.com
Preparer Telephone
6613046971
Prepared Date
2019-03-28 00:00:00
Authorizer Name
Q****** F******
Authorizer Telephone
7707514240
Authorizer Title
Director Compliance Codes And Standards
Authorizer Email
Q**************@k***********.com
Narrative
On 9/21/18 at 20:57, while doing his shift inspections, an operator at concord noticed the leak sensor on tank cc-9 blinking. On further investigation, he noticed an odor of diesel and found that the suction/discharge line on the tank was wet, and there was staining in the sump pit area (not engineered containment) underneath the tank. The tank was drained dry and investigated internally. Two cracks were subsequently discovered in the sump area where fill lines enter the sump. The repair to the cracks entailed replacing a section of steel that was cut out and having the sump walls reinforced. Update for supplemental/final 4/16/19-an internal investigation concluded that the cracks that formed as a result of inadequate standards or design criteria as the location of the sump umbrella/deflector supports welded to the bottom plate near the sump wall securing the umbrella/deflector were installed to close, a result of poor design. Due to the functionality of typical breakout tanks including incoming flow rates, and high turnover rates, these umbrella/deflectors receive significant stress from constant normal operating procedures. 09/30/2024 - updated by PHMSA per operator approval.
| Report Received Date | 2018-10-18 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180320 |
| Supplemental Number | 31967 |
| Report Type | Supplemental Final |
| Operator Id | 18092 PHMSA Enforcement |
| Name | Sfpp, Lp |
| Operator Street Address | 1001 Louisiana St., Suite 1000 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2018-09-21 20:57:00 |
| Location Latitude | 38.003696 Google Maps OpenStreetMap |
| Location Longitude | -122.056236 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 | 0.4 |
| Recovered Bbls | 0.4 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2018-09-21 20:57:00 |
| System Part Involved | Onshore Breakout Tank Or Storage Vessel, Including Attached Appurtenances |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Accident Was Caused By Cracks To A Single Tank, Facility Remained Operational |
| On Site Datetime | 2018-09-21 20:57:00 |
| Nrc Rpt Datetime | 2018-09-21 20:58:00 |
| Nrc Rpt Num | 1225356 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Concord Pump Station |
| Segment Name | Tank 9 |
| Onshore State Abbreviation | Ca |
| Onshore Postal Code | 94520 |
| Onshore City Name | Concord |
| Onshore County Name | Contra Costa |
| Designated Location | Milepost/valve Station |
| Designated Name | Concord Ps |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Tank, Including Attached Appurtenances |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Tank/vessel |
| Weld Subtype | Other |
| Weld Details | Sump Umbrella/deflector Support Welds |
| Tank Vessel Subtype | Single Bottom System |
| Tank Type | Atmospheric |
| Installation Year | 1963 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Crack |
| 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 | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | Yes |
| Usa Ecological Ind | Yes |
| Usa Ecological Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 41 |
| Est Cost Prop Damage | 248750 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 8170 |
| Est Cost Other | 0 |
| Prpty | 256961 |
| Accident Psig | 11.31 |
| Mop Psig | 13.8 |
| 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 | Controller's performance of a covered function did not cause or contribute to accident. Leak was discovered by operator on shift inspection. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Design-, Construction-, Installation-, Or Fabrication-Related |
| Field Exam Ind | Yes |
| Failure Type | Design-, Construction-, Installation-, Or Fabrication-Related |
| Fatigue Vibr Related | Yes |
| Failure Subtype | Other |
| Fatigue Vibr Related Other | Cyclical Stresses From High Turnover And Fill Rate |
| Additional Crack Ind | Yes |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | Yes |
| Exm Handl Ultrasonic Rcnt Year | 2018 |
| Exm Wet Mgnt Partcl Rcnt Year | 2018 |
| Exm Handl Ultrasonic Rcnt Ind | Yes |
| Exm Wet Mgnt Partcl Rcnt Ind | Yes |
| Preparer Name | W*** S****** |
| Preparer Title | Pipeline Technical Specialist |
| Preparer Email | W***********@k***********.com |
| Preparer Telephone | 6613046971 |
| Prepared Date | 2019-03-28 00:00:00 |
| Authorizer Name | Q****** F****** |
| Authorizer Telephone | 7707514240 |
| Authorizer Title | Director Compliance Codes And Standards |
| Authorizer Email | Q**************@k***********.com |
| Narrative | On 9/21/18 at 20:57, while doing his shift inspections, an operator at concord noticed the leak sensor on tank cc-9 blinking. On further investigation, he noticed an odor of diesel and found that the suction/discharge line on the tank was wet, and there was staining in the sump pit area (not engineered containment) underneath the tank. The tank was drained dry and investigated internally. Two cracks were subsequently discovered in the sump area where fill lines enter the sump. The repair to the cracks entailed replacing a section of steel that was cut out and having the sump walls reinforced. Update for supplemental/final 4/16/19-an internal investigation concluded that the cracks that formed as a result of inadequate standards or design criteria as the location of the sump umbrella/deflector supports welded to the bottom plate near the sump wall securing the umbrella/deflector were installed to close, a result of poor design. Due to the functionality of typical breakout tanks including incoming flow rates, and high turnover rates, these umbrella/deflectors receive significant stress from constant normal operating procedures. 09/30/2024 - updated by PHMSA per operator approval. |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA