Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2020-01-08 — TX
Operator
Semgas, L.p.
Cause
Material Failure Of Pipe Or Weld
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$53,650
Incident datetime
2020-01-08 11:40
Report number
Location
TX
Narrative
On january 7, 2020, at approximately 11:30 hrs, semgas experienced a gas leak on a regulated class 1 transmission line, the enable residue 16 inch on the rose valley plant sales pipeline. This pipeline is located in woods county, 11 miles southwest of alva, oklahoma. Operations personnel was conducting a pipeline leak detection survey in the area and detected a high hydrocarbon lel reading and noticed bare vegetation in the area. Operations personnel notified their supervisor of a potential leak. At approximately 11:40 hrs, operations personnel closed the upstream and downstream block valves to isolated the potential leak and began to reduce the pressure. On january 8, 2020 a contract crew began excavation of the pipeline. Once the pipeline was exposed, operations personnel discovered a pinhole leak on the pipeline's longitudinal seam. A total of 51 feet of pipe was removed and the affected pipe segment was sent to the lab for analysis. The 51 feet of pipe was replaced with new pipe to prevent other leaks from occurring. On january 14, 2020 at approximately 17:38 hrs, the pipeline was put back into service. This pipeline is under the jurisdiction of the oklahoma corporation commission. On january 9, 2020, this incident was telephonically reported to the national response center (nrc#1268323) at 17:06 hrs. And to the occ at 17:10 hrs. This incident became a reportable incident once the estimated repair cost went over the $50,000.00 limit. A 48 hour nrc update was made on january 10, 2020 at 11:21 hrs. (nrc#1268361) on february 7, 2020, lab results confirmed the leak was due to manufacturer's defect in the pipeline's longitudinal seam weld. Further considerations will be made for future ili assessments in order to determine the overall condition of the remaining pipe.
Detailed record list
Report Received Date
2020-02-03 00:00:00
Iyear
2020
Report Number
20200008
Supplemental Number
33339
Report Type
Supplemental Final
Operator Id
32166
Name
Semgas, L.p.
Operator Street Address
1300 Main Street
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2020-01-08 11:40:00
Time Zone
Central
Daylight Savings Ind
No
Location Latitude
36.658025
Location Longitude
-98.752932
Nrc Rpt Num
1268323
Nrc Rpt Datetime
2020-01-09 17:06:00
Additional Nrc Report Numbers
1268361
Commodity Released Type
Natural Gas
Unintentional Release
1078
Intentional Release
1004
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2020-01-08 11:40:00
Restart Datetime
2020-01-14 17:38:00
Communication State Fed Ind
No
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Close Datetime
2020-01-08 11:40:00
Downstream Action Taken
Valve Closure
Downstream Vlv Close Datetime
2020-01-08 11:40:00
Num Pub Evacuated
0
Incident Identified Datetime
2020-01-08 11:40:00
On Site Datetime
2020-01-08 11:40:00
On Off Shore
Onshore
Onshore State Abbreviation
Ok
Onshore Postal Code
73746
Onshore City Name
Hopeton
Onshore County Name
Woods
Designated Location
Survey Station No.
Designated Name
3657.5-3706.8
Pipe Fac Name
Enable Residue 16 Inch
Segment Name
Rose Valley Enable Residue Sales Line
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
60
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Intrastate
System Part Involved
Onshore Pipeline, Including Valve Sites
Item Involved
Pipe
Pipe Type
Pipe Seam
Pipe Diameter
16
Pipe Wall Thickness
0.25
Pipe Smys
65000
Pipe Specification
Api-5l
Pipe Seam Type
Longitudinal Erw - High Frequency
Pipe Manufacturer
Paragon
Pipe Coating Type
Epoxy
Coating Applied Ind
Yes
Installation Year
2014
Manufactured Year
2014
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
385
Heat Damage Ind
No
Non Heat Damage Ind
No
Est Cost Oper Paid
5000
Est Cost Unintentional Release
2307
Est Cost Intentional Release
2149
Est Cost Prop Damage
53650
Est Cost Emergency
0
Est Cost Other
0
Gas Cost In Mcf
2.14
Prpty
63106
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Wildlife Impact Ind
No
Accident Psig
880
Gas Flow In Pipe In Mcf
0
Mop Psig
1216
Mop Cfr Section
192.619(A)(1)
Maop Established Date
2014-06-06 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
11035
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
Transmission System
Scada In Place Ind
No
Accident Identifier
Ground Patrol By Operator Or Its Contractor
Operator Type
Operator Employee
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
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)
Pwjf Failure Type
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Field Exam Ind
Yes
Metallurgical Ind
Yes
Other Factor
Yes
Other Factor Details
Manufacture Seam Defect
Pwf Additional Other Ind
Yes
Additional Other Details
Manufacture Seam Defect
Post Constr Pressure Test Val
Unknown
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Pwf Manufacturing Ind
Yes
Preparer Name
C**** P******
Preparer Title
Specialist Regulatory Compliance
Preparer Email
C******************@e*************.com
Preparer Telephone
7138984464
Authorizer Name
C**** K*****
Authorizer Title
Manager - Intrastate Regulatory Compliance
Authorizer Telephone
7139897077
Authorizer Email
C***********@e*************.com
Narrative
On january 7, 2020, at approximately 11:30 hrs, semgas experienced a gas leak on a regulated class 1 transmission line, the enable residue 16 inch on the rose valley plant sales pipeline. This pipeline is located in woods county, 11 miles southwest of alva, oklahoma. Operations personnel was conducting a pipeline leak detection survey in the area and detected a high hydrocarbon lel reading and noticed bare vegetation in the area. Operations personnel notified their supervisor of a potential leak. At approximately 11:40 hrs, operations personnel closed the upstream and downstream block valves to isolated the potential leak and began to reduce the pressure. On january 8, 2020 a contract crew began excavation of the pipeline. Once the pipeline was exposed, operations personnel discovered a pinhole leak on the pipeline's longitudinal seam. A total of 51 feet of pipe was removed and the affected pipe segment was sent to the lab for analysis. The 51 feet of pipe was replaced with new pipe to prevent other leaks from occurring. On january 14, 2020 at approximately 17:38 hrs, the pipeline was put back into service. This pipeline is under the jurisdiction of the oklahoma corporation commission. On january 9, 2020, this incident was telephonically reported to the national response center (nrc#1268323) at 17:06 hrs. And to the occ at 17:10 hrs. This incident became a reportable incident once the estimated repair cost went over the $50,000.00 limit. A 48 hour nrc update was made on january 10, 2020 at 11:21 hrs. (nrc#1268361) on february 7, 2020, lab results confirmed the leak was due to manufacturer's defect in the pipeline's longitudinal seam weld. Further considerations will be made for future ili assessments in order to determine the overall condition of the remaining pipe.
| Report Received Date | 2020-02-03 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200008 |
| Supplemental Number | 33339 |
| Report Type | Supplemental Final |
| Operator Id | 32166 PHMSA Enforcement |
| Name | Semgas, L.p. |
| Operator Street Address | 1300 Main Street |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2020-01-08 11:40:00 |
| Time Zone | Central |
| Daylight Savings Ind | No |
| Location Latitude | 36.658025 Google Maps OpenStreetMap |
| Location Longitude | -98.752932 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1268323 NRC Report How to search |
| Nrc Rpt Datetime | 2020-01-09 17:06:00 |
| Additional Nrc Report Numbers | 1268361 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 1078 |
| Intentional Release | 1004 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Status When Identified | Normal Operation, Includes Pauses During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2020-01-08 11:40:00 |
| Restart Datetime | 2020-01-14 17:38:00 |
| Communication State Fed Ind | No |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Close Datetime | 2020-01-08 11:40:00 |
| Downstream Action Taken | Valve Closure |
| Downstream Vlv Close Datetime | 2020-01-08 11:40:00 |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2020-01-08 11:40:00 |
| On Site Datetime | 2020-01-08 11:40:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ok |
| Onshore Postal Code | 73746 |
| Onshore City Name | Hopeton |
| Onshore County Name | Woods |
| Designated Location | Survey Station No. |
| Designated Name | 3657.5-3706.8 |
| Pipe Fac Name | Enable Residue 16 Inch |
| Segment Name | Rose Valley Enable Residue Sales Line |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 60 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| Item Involved | Pipe |
| Pipe Type | Pipe Seam |
| Pipe Diameter | 16 |
| Pipe Wall Thickness | 0.25 |
| Pipe Smys | 65000 |
| Pipe Specification | Api-5l |
| Pipe Seam Type | Longitudinal Erw - High Frequency |
| Pipe Manufacturer | Paragon |
| Pipe Coating Type | Epoxy |
| Coating Applied Ind | Yes |
| Installation Year | 2014 |
| Manufactured Year | 2014 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 385 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Est Cost Oper Paid | 5000 |
| Est Cost Unintentional Release | 2307 |
| Est Cost Intentional Release | 2149 |
| Est Cost Prop Damage | 53650 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 2.14 |
| Prpty | 63106 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Wildlife Impact Ind | No |
| Accident Psig | 880 |
| Gas Flow In Pipe In Mcf | 0 |
| Mop Psig | 1216 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Maop Established Date | 2014-06-06 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Length Segment Isolated | 11035 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Transmission System |
| Scada In Place Ind | No |
| Accident Identifier | Ground Patrol By Operator Or Its Contractor |
| Operator Type | Operator Employee |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| 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) |
| Pwjf Failure Type | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Field Exam Ind | Yes |
| Metallurgical Ind | Yes |
| Other Factor | Yes |
| Other Factor Details | Manufacture Seam Defect |
| Pwf Additional Other Ind | Yes |
| Additional Other Details | Manufacture Seam Defect |
| Post Constr Pressure Test Val | Unknown |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Pwf Manufacturing Ind | Yes |
| Preparer Name | C**** P****** |
| Preparer Title | Specialist Regulatory Compliance |
| Preparer Email | C******************@e*************.com |
| Preparer Telephone | 7138984464 |
| Authorizer Name | C**** K***** |
| Authorizer Title | Manager - Intrastate Regulatory Compliance |
| Authorizer Telephone | 7139897077 |
| Authorizer Email | C***********@e*************.com |
| Narrative | On january 7, 2020, at approximately 11:30 hrs, semgas experienced a gas leak on a regulated class 1 transmission line, the enable residue 16 inch on the rose valley plant sales pipeline. This pipeline is located in woods county, 11 miles southwest of alva, oklahoma. Operations personnel was conducting a pipeline leak detection survey in the area and detected a high hydrocarbon lel reading and noticed bare vegetation in the area. Operations personnel notified their supervisor of a potential leak. At approximately 11:40 hrs, operations personnel closed the upstream and downstream block valves to isolated the potential leak and began to reduce the pressure. On january 8, 2020 a contract crew began excavation of the pipeline. Once the pipeline was exposed, operations personnel discovered a pinhole leak on the pipeline's longitudinal seam. A total of 51 feet of pipe was removed and the affected pipe segment was sent to the lab for analysis. The 51 feet of pipe was replaced with new pipe to prevent other leaks from occurring. On january 14, 2020 at approximately 17:38 hrs, the pipeline was put back into service. This pipeline is under the jurisdiction of the oklahoma corporation commission. On january 9, 2020, this incident was telephonically reported to the national response center (nrc#1268323) at 17:06 hrs. And to the occ at 17:10 hrs. This incident became a reportable incident once the estimated repair cost went over the $50,000.00 limit. A 48 hour nrc update was made on january 10, 2020 at 11:21 hrs. (nrc#1268361) on february 7, 2020, lab results confirmed the leak was due to manufacturer's defect in the pipeline's longitudinal seam weld. Further considerations will be made for future ili assessments in order to determine the overall condition of the remaining pipe. |
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