Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2016-04-29 — TX
Operator
Texas Eastern Transmission, Lp (Spectra Energy Partners, Lp)
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
1 injury
Property damage (nominal)
$624,000
Incident datetime
2016-04-29 08:13
Report number
Location
TX
Narrative
At approximately 8:13 a.M. Est on april 29, 2016, tetlp's 30-inch diameter line 27 transporting natural gas from delmont compressor station to armagh compressor station in pennsylvania failed at mp 2.07. The failure resulted in an explosion and fire. Tetlp personnel were immediately dispatched to close mainline block valves within the delmont compressor station and at the conemaugh river mainline valves at mp 15.45. First responders evacuated the public from 9 structures. Metallurgical analysis concluded the failure occurred at the 5:30 o'clock orientation at a region of external metal loss near a girth weld that had been coated with polyethylene tape. The failure initiated in the axial direction and propagated axially and circumferentially. The presence of external corrosion at the failure location indicates that the field joint coating was compromised. This narrative description has been updated since filing of the original report to reflect the company's failure analysis. Supplemental report: tetlp has made the decision to abandon the idled section of line 27. Tetlp has commenced work on the required ferc abandonment filing.
Detailed record list
Report Received Date
2016-05-27 00:00:00
Iyear
2016
Report Number
20160042
Supplemental Number
31657
Report Type
Supplemental Final
Operator Id
19235
Name
Texas Eastern Transmission, Lp (Spectra Energy Partners, Lp)
Operator Street Address
915 North Eldridge Parkway
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77079
Local Datetime
2016-04-29 08:13:00
Location Latitude
40.39682924
Location Longitude
-79.52351279
Nrc Rpt Num
1146495
Nrc Rpt Datetime
2016-04-29 09:15:00
Commodity Released Type
Natural Gas
Unintentional Release
208425
Intentional Release
27775
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
Yes
Num Emp Injuries
0
Num Contr Injuries
0
Num Er Injuries
0
Num Worker Injuries
0
Num Gp Injuries
1
Injure
1
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2016-04-29 09:12:00
Still Shutdown Ind
Yes
Ignite Ind
Yes
Explode Ind
Yes
Num Pub Evacuated
12
Incident Identified Datetime
2016-04-29 08:13:00
On Site Datetime
2016-04-29 08:25:00
On Off Shore
Onshore
Onshore State Abbreviation
Pa
Onshore Postal Code
15601
Onshore City Name
Not Within A Municipality
Onshore County Name
Westmoreland
Designated Location
Milepost
Designated Name
2.0
Pipe Fac Name
Line 27
Segment Name
Delmont To Armagh
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
57
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
30
Pipe Wall Thickness
0.404
Pipe Smys
65000
Pipe Specification
Api - 5lx
Pipe Seam Type
Dsaw
Pipe Manufacturer
Us Steel
Pipe Coating Type
Epoxy
Installation Year
1981
Manufactured Year
1981
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Longitudinal
Rupture Length
1213
Rupture Width
94
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
671
Heat Damage Ind
Yes
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
2350000
Est Cost Unintentional Release
406850
Est Cost Intentional Release
55550
Est Cost Prop Damage
624000
Est Cost Emergency
0
Est Cost Other
0
Prpty
3436400
Accident Psig
1039
Mop Psig
1050
Mop Cfr Section
192.619(A)(1)
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
79411
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
5
Num Employees Failed
0
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
General Corrosion
Galvanic Corrosion Ind
Yes
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
Yes
Cathodic Pro Start Year
1981
Cathodic Survey Type
Yes
Cp Annual Survey Ind
Yes
Cp Annual Survey Year
2016
Prior Damage
Yes
Collected Data Ind
Yes
Axial Magnetic Flx Lkg Ind
Yes
Geometry Deformation Ind
Yes
Axial Recent Year
2012
Geometry Recent Year
2012
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
M**** S******
Preparer Title
Engineer
Preparer Email
M************@e*******.com
Preparer Telephone
713-627-4726
Authorizer Name
N***** A****
Authorizer Title
Supervisor
Authorizer Telephone
713-627-5008
Authorizer Email
N***********@e*******.com
Narrative
At approximately 8:13 a.M. Est on april 29, 2016, tetlp's 30-inch diameter line 27 transporting natural gas from delmont compressor station to armagh compressor station in pennsylvania failed at mp 2.07. The failure resulted in an explosion and fire. Tetlp personnel were immediately dispatched to close mainline block valves within the delmont compressor station and at the conemaugh river mainline valves at mp 15.45. First responders evacuated the public from 9 structures. Metallurgical analysis concluded the failure occurred at the 5:30 o'clock orientation at a region of external metal loss near a girth weld that had been coated with polyethylene tape. The failure initiated in the axial direction and propagated axially and circumferentially. The presence of external corrosion at the failure location indicates that the field joint coating was compromised. This narrative description has been updated since filing of the original report to reflect the company's failure analysis. Supplemental report: tetlp has made the decision to abandon the idled section of line 27. Tetlp has commenced work on the required ferc abandonment filing.
| Report Received Date | 2016-05-27 00:00:00 |
|---|---|
| Iyear | 2016 |
| Report Number | 20160042 |
| Supplemental Number | 31657 |
| Report Type | Supplemental Final |
| Operator Id | 19235 PHMSA Enforcement |
| Name | Texas Eastern Transmission, Lp (Spectra Energy Partners, Lp) |
| Operator Street Address | 915 North Eldridge Parkway |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77079 |
| Local Datetime | 2016-04-29 08:13:00 |
| Location Latitude | 40.39682924 Google Maps OpenStreetMap |
| Location Longitude | -79.52351279 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1146495 NRC Report How to search |
| Nrc Rpt Datetime | 2016-04-29 09:15:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 208425 |
| Intentional Release | 27775 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | Yes |
| Num Emp Injuries | 0 |
| Num Contr Injuries | 0 |
| Num Er Injuries | 0 |
| Num Worker Injuries | 0 |
| Num Gp Injuries | 1 |
| Injure | 1 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2016-04-29 09:12:00 |
| Still Shutdown Ind | Yes |
| Ignite Ind | Yes |
| Explode Ind | Yes |
| Num Pub Evacuated | 12 |
| Incident Identified Datetime | 2016-04-29 08:13:00 |
| On Site Datetime | 2016-04-29 08:25:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Pa |
| Onshore Postal Code | 15601 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Westmoreland |
| Designated Location | Milepost |
| Designated Name | 2.0 |
| Pipe Fac Name | Line 27 |
| Segment Name | Delmont To Armagh |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 57 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 30 |
| Pipe Wall Thickness | 0.404 |
| Pipe Smys | 65000 |
| Pipe Specification | Api - 5lx |
| Pipe Seam Type | Dsaw |
| Pipe Manufacturer | Us Steel |
| Pipe Coating Type | Epoxy |
| Installation Year | 1981 |
| Manufactured Year | 1981 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Longitudinal |
| Rupture Length | 1213 |
| Rupture Width | 94 |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 671 |
| Heat Damage Ind | Yes |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 2350000 |
| Est Cost Unintentional Release | 406850 |
| Est Cost Intentional Release | 55550 |
| Est Cost Prop Damage | 624000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Prpty | 3436400 |
| Accident Psig | 1039 |
| Mop Psig | 1050 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Length Segment Isolated | 79411 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 5 |
| Num Employees Failed | 0 |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | General Corrosion |
| Galvanic Corrosion Ind | Yes |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | Yes |
| Cathodic Pro Start Year | 1981 |
| Cathodic Survey Type | Yes |
| Cp Annual Survey Ind | Yes |
| Cp Annual Survey Year | 2016 |
| Prior Damage | Yes |
| Collected Data Ind | Yes |
| Axial Magnetic Flx Lkg Ind | Yes |
| Geometry Deformation Ind | Yes |
| Axial Recent Year | 2012 |
| Geometry Recent Year | 2012 |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | M**** S****** |
| Preparer Title | Engineer |
| Preparer Email | M************@e*******.com |
| Preparer Telephone | 713-627-4726 |
| Authorizer Name | N***** A**** |
| Authorizer Title | Supervisor |
| Authorizer Telephone | 713-627-5008 |
| Authorizer Email | N***********@e*******.com |
| Narrative | At approximately 8:13 a.M. Est on april 29, 2016, tetlp's 30-inch diameter line 27 transporting natural gas from delmont compressor station to armagh compressor station in pennsylvania failed at mp 2.07. The failure resulted in an explosion and fire. Tetlp personnel were immediately dispatched to close mainline block valves within the delmont compressor station and at the conemaugh river mainline valves at mp 15.45. First responders evacuated the public from 9 structures. Metallurgical analysis concluded the failure occurred at the 5:30 o'clock orientation at a region of external metal loss near a girth weld that had been coated with polyethylene tape. The failure initiated in the axial direction and propagated axially and circumferentially. The presence of external corrosion at the failure location indicates that the field joint coating was compromised. This narrative description has been updated since filing of the original report to reflect the company's failure analysis. Supplemental report: tetlp has made the decision to abandon the idled section of line 27. Tetlp has commenced work on the required ferc abandonment filing. |
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