Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2015-09-16 — TX
Operator
Shell Pipeline Co., L.p.
Cause
Material Failure Of Pipe Or Weld
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$300,000
Incident datetime
2015-09-16 21:34
Report number
Location
TX
Narrative
During a set point increase of three pounds of discharge pressure at an intermediate pump station by the controller, the pipe section approx. 0.5 miles downstream ruptured. The controller immediately identified the release by the pump station increased flow rate and low suction shutdown of the pump station. The controller took immediate action to shutdown the entire pipeline and closing intermediate block valves. The controller then closed off the receiving location to reduce the release of crude oil. The controllers actions from the time of the low suction shutdown of the pump station unit to the shutdown of the pipeline system was two minutes. This is faster than the cpm system can identify a release. The controller then contacted the local & on call supervisors, the controller console supervisor to inform them of his actions. The local supervisor called out two personnel to begin looking for the release site. Timing was after dark with limited visibility. The personnel drove the area north of the pump station. The topography is rolling hills and pasture land with limited access. They did not see the release site where they were able to drive. The air patrol was called to be over the pump station and head north at first light. The air patrol identified the location at 07:05 hrs. Metallurgical examination report - "the pipe section ruptured at a preexisting fatigue crack. The fatigue crack initiated from small corrosion pits along the internal surface at the toe of the longitudinal seam weld. Evidence of interlinked inclusions were observed, along with a stepwise fracture morphology, suggesting that stress-oriented hydrogen inducted cracking (sohic) may have contributed to the failure." 10/24/16 updated manufacturer armco 1982 & sub-cause original manufacturing-related.
Detailed record list
Report Received Date
2015-10-14 00:00:00
Iyear
2015
Report Number
20150364
Supplemental Number
21783
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
Local Datetime
2015-09-16 21:34:00
Location Latitude
37.72575
Location Longitude
-121.55485
Commodity Released Type
Crude Oil
Unintentional Release Bbls
900
Intentional Release Bbls
0
Recovered Bbls
800
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Controller
Operator Type
Operator Employee
Incident Identified Datetime
2015-09-16 21:34:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2015-09-16 21:36:00
Restart Datetime
2015-09-21 19:45:00
On Site Datetime
2015-09-17 07:30:00
Nrc Rpt Datetime
2015-09-17 08:02:00
Nrc Rpt Num
1128712
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
North 20 - Coalinga To Avon
Segment Name
Tracy To Marsh Creek
Onshore State Abbreviation
Ca
Onshore Postal Code
95304
Onshore City Name
Tracy
Onshore County Name
San Joaquin
Designated Location
Milepost/valve Station
Designated Name
137
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
60
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
24
Pipe Wall Thickness
0.26
Pipe Smys
60000
Pipe Specification
5l- X60
Pipe Seam Type
Dsaw
Pipe Manufacturer
Armco
Pipe Coating Type
Polyolefin
Installation Year
1989
Manufactured Year
1982
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Longitudinal
Rupture Width
6
Rupture Length
36
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
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
0
Est Cost Prop Damage
300000
Est Cost Emergency
900000
Est Cost Environmental
0
Est Cost Other
0
Prpty
1200000
Accident Psig
878
Mop Psig
936
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
16125
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
Yes
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
Yes, specify investigation result(s): (select all that apply)
Invest No Schedule Ind
Yes
Invest No Schedule Ind Details
The Investigation Did Not Reveal Any Fatigue Issues Since The Controller's Actions Were Deemed Appropriate For The Incident.
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Material Failure Of Pipe Or Weld
Cause Details
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Metallurgical Ind
Yes
Failure Type
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Fatigue Vibr Related
Yes
Failure Subtype
Mechanically-Induced Fatigue Prior To Installation (Such As During Transport Of Pipe)
Additional Crack Ind
Yes
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Geometry Deformation Ind
Yes
Axial Recent Year
2013
Geometry Recent Year
2013
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
R****** K*****
Preparer Title
Regulatory Specialist
Preparer Email
R*************@s****.com
Preparer Telephone
713 241 1064
Preparer Fax
713 241 8498
Prepared Date
2016-10-24 00:00:00
Authorizer Name
D****** P****
Authorizer Telephone
713 241 2035
Authorizer Title
Integrity Regulatory Srvc Manager
Authorizer Email
D************@s****.com
Narrative
During a set point increase of three pounds of discharge pressure at an intermediate pump station by the controller, the pipe section approx. 0.5 miles downstream ruptured. The controller immediately identified the release by the pump station increased flow rate and low suction shutdown of the pump station. The controller took immediate action to shutdown the entire pipeline and closing intermediate block valves. The controller then closed off the receiving location to reduce the release of crude oil. The controllers actions from the time of the low suction shutdown of the pump station unit to the shutdown of the pipeline system was two minutes. This is faster than the cpm system can identify a release. The controller then contacted the local & on call supervisors, the controller console supervisor to inform them of his actions. The local supervisor called out two personnel to begin looking for the release site. Timing was after dark with limited visibility. The personnel drove the area north of the pump station. The topography is rolling hills and pasture land with limited access. They did not see the release site where they were able to drive. The air patrol was called to be over the pump station and head north at first light. The air patrol identified the location at 07:05 hrs. Metallurgical examination report - "the pipe section ruptured at a preexisting fatigue crack. The fatigue crack initiated from small corrosion pits along the internal surface at the toe of the longitudinal seam weld. Evidence of interlinked inclusions were observed, along with a stepwise fracture morphology, suggesting that stress-oriented hydrogen inducted cracking (sohic) may have contributed to the failure." 10/24/16 updated manufacturer armco 1982 & sub-cause original manufacturing-related.
| Report Received Date | 2015-10-14 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150364 |
| Supplemental Number | 21783 |
| 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 |
| Local Datetime | 2015-09-16 21:34:00 |
| Location Latitude | 37.72575 Google Maps OpenStreetMap |
| Location Longitude | -121.55485 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 900 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 800 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Controller |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2015-09-16 21:34:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2015-09-16 21:36:00 |
| Restart Datetime | 2015-09-21 19:45:00 |
| On Site Datetime | 2015-09-17 07:30:00 |
| Nrc Rpt Datetime | 2015-09-17 08:02:00 |
| Nrc Rpt Num | 1128712 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | North 20 - Coalinga To Avon |
| Segment Name | Tracy To Marsh Creek |
| Onshore State Abbreviation | Ca |
| Onshore Postal Code | 95304 |
| Onshore City Name | Tracy |
| Onshore County Name | San Joaquin |
| Designated Location | Milepost/valve Station |
| Designated Name | 137 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 60 |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 24 |
| Pipe Wall Thickness | 0.26 |
| Pipe Smys | 60000 |
| Pipe Specification | 5l- X60 |
| Pipe Seam Type | Dsaw |
| Pipe Manufacturer | Armco |
| Pipe Coating Type | Polyolefin |
| Installation Year | 1989 |
| Manufactured Year | 1982 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Longitudinal |
| Rupture Width | 6 |
| Rupture Length | 36 |
| 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 |
| 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 | 0 |
| Est Cost Prop Damage | 300000 |
| Est Cost Emergency | 900000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 1200000 |
| Accident Psig | 878 |
| Mop Psig | 936 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 16125 |
| 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 | Yes |
| 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 | Yes, specify investigation result(s): (select all that apply) |
| Invest No Schedule Ind | Yes |
| Invest No Schedule Ind Details | The Investigation Did Not Reveal Any Fatigue Issues Since The Controller's Actions Were Deemed Appropriate For The Incident. |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Metallurgical Ind | Yes |
| Failure Type | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Fatigue Vibr Related | Yes |
| Failure Subtype | Mechanically-Induced Fatigue Prior To Installation (Such As During Transport Of Pipe) |
| Additional Crack Ind | Yes |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Geometry Deformation Ind | Yes |
| Axial Recent Year | 2013 |
| Geometry Recent Year | 2013 |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | R****** K***** |
| Preparer Title | Regulatory Specialist |
| Preparer Email | R*************@s****.com |
| Preparer Telephone | 713 241 1064 |
| Preparer Fax | 713 241 8498 |
| Prepared Date | 2016-10-24 00:00:00 |
| Authorizer Name | D****** P**** |
| Authorizer Telephone | 713 241 2035 |
| Authorizer Title | Integrity Regulatory Srvc Manager |
| Authorizer Email | D************@s****.com |
| Narrative | During a set point increase of three pounds of discharge pressure at an intermediate pump station by the controller, the pipe section approx. 0.5 miles downstream ruptured. The controller immediately identified the release by the pump station increased flow rate and low suction shutdown of the pump station. The controller took immediate action to shutdown the entire pipeline and closing intermediate block valves. The controller then closed off the receiving location to reduce the release of crude oil. The controllers actions from the time of the low suction shutdown of the pump station unit to the shutdown of the pipeline system was two minutes. This is faster than the cpm system can identify a release. The controller then contacted the local & on call supervisors, the controller console supervisor to inform them of his actions. The local supervisor called out two personnel to begin looking for the release site. Timing was after dark with limited visibility. The personnel drove the area north of the pump station. The topography is rolling hills and pasture land with limited access. They did not see the release site where they were able to drive. The air patrol was called to be over the pump station and head north at first light. The air patrol identified the location at 07:05 hrs. Metallurgical examination report - "the pipe section ruptured at a preexisting fatigue crack. The fatigue crack initiated from small corrosion pits along the internal surface at the toe of the longitudinal seam weld. Evidence of interlinked inclusions were observed, along with a stepwise fracture morphology, suggesting that stress-oriented hydrogen inducted cracking (sohic) may have contributed to the failure." 10/24/16 updated manufacturer armco 1982 & sub-cause original manufacturing-related. |
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