Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2020-12-03 — TX
Operator
Columbia Gas Transmission, Llc
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$150,000
Incident datetime
2020-12-03 08:30
Report number
Location
TX
Narrative
On december 3, 2020, at approximately 08:30 the presence of natural gas was identified by a company personnel passing by one of the compressor buildings in crawford compressor station (cs). Crawford cs is a transmission facility located in fairfield county, state of ohio that is operated and maintained by columbia gas transmission, llc (company). Company personnel conducted leakage survey at the depicted leak location and its surrounding to investigate the source of the potential natural gas leak. Furthermore, throughout a thorough investigation, it was identified that the potential release was along line sr-696. At approx. 14:25 line sr-696 had been isolated on both ends of the affected section and blowdown commenced from 460 psig line operating pressure. At approx. 15:00 the line affected segment of line sr-696 was fully blown down to atmospheric pressure. The initial national response center (nrc) report no.1293457 and the nrc 48-hour report no.1293539 have been called-in on december 3rd and december 5th respectively. The failed section of the pipeline was sent to a metallurgical laboratory to determine the probable cause behind the failure of the pipeline. The metallurgical failure analysis report of line sr-696 identified that the cause of the leak was internal corrosion. Note: all times were recorded in eastern standard time
Detailed record list
Report Received Date
2020-12-30 00:00:00
Iyear
2020
Report Number
20200135
Supplemental Number
35347
Report Type
Supplemental Final
Operator Id
2616
Name
Columbia Gas Transmission, Llc
Operator Street Address
700 Louisiana St. Suite 700
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2020-12-03 13:20:00
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Latitude
39.63154
Location Longitude
-82.55488
Nrc Rpt Num
1293457
Nrc Rpt Datetime
2020-12-03 14:54:00
Additional Nrc Report Numbers
1293539
Commodity Released Type
Natural Gas
Unintentional Release
200
Intentional Release
78
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
2020-12-03 15:00:00
Restart Datetime
2020-12-24 17:00:00
Communication State Fed Ind
No
Ignite Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2020-12-03 08:30:00
On Site Datetime
2020-12-03 08:30:00
On Off Shore
Onshore
Onshore State Abbreviation
Oh
Onshore Postal Code
43155
Onshore City Name
Sugar Grove
Onshore County Name
Fairfield
Designated Location
Not Applicable
Pipe Fac Name
Sr-696
Segment Name
Sr-696 Crawford Compressor Station
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
48
Other Underground Facilities
No
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Compressor Station Equipment And Piping
Item Involved
Pipe
Pipe Type
Pipe Body
Pipe Diameter
30
Puddle Weld Ind
No
Pipe Wall Thickness
0.328
Pipe Smys
65000
Pipe Specification
X65
Pipe Seam Type
Dsaw
Pipe Manufacturer
Unknown
Pipe Coating Type
Coal Tar
Coating Applied Ind
Yes
Installation Year
1977
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 2 Location
Could Be Hca
No
Pir Radius
698
Heat Damage Ind
No
Non Heat Damage Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
410
Est Cost Intentional Release
160
Est Cost Prop Damage
150000
Est Cost Emergency
0
Est Cost Other
30000
Est Cost Other Details
Other Costs Include Metallurgical Analysis
Gas Cost In Mcf
2.05
Prpty
180570
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
460
Gas Flow In Pipe In Mcf
155000
Mop Psig
850
Mop Cfr Section
192.619(A)(1)
Maop Established Date
1977-09-15 00:00:00
Maop Reversal Flow Ind
Bi-Directional
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
Yes
Gas Odorized Ind
Yes
Pipeline Function
Transmission In Storage Field
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
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
The unintended release of gas was due to a nuisance leak.
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 Field Exam Basis Ind
Yes
Int Metallurgical Basis Ind
Yes
Int Other Loc Ind
Yes
Corrosion Location Details
Bottom Of The Pipe
Corrosion Inhibitors
Yes
Corrosion Lining
No
Cleaning Dewatering
No
Corrosion Coupons
No
Collected Data Ind
No
Has Hydrtst Conduc Before Ind
No
Direct Asmnt Conducted
No
Non Destructive Exam Ind
No
Preparer Name
K***** R****** A*******
Preparer Title
Compliance Specialist
Preparer Email
K*************@t*******.com
Preparer Telephone
(304)357-2351
Local Contact Name
K***** R****** A*******
Local Contact Email
K*************@t*******.com
Local Contact Telephone
(304)357-2351
Authorizer Name
P*** S******
Authorizer Title
Us Regulatory Compliance Manager East
Authorizer Telephone
(304)550-4866
Authorizer Email
P***********@t*******.com
Narrative
On december 3, 2020, at approximately 08:30 the presence of natural gas was identified by a company personnel passing by one of the compressor buildings in crawford compressor station (cs). Crawford cs is a transmission facility located in fairfield county, state of ohio that is operated and maintained by columbia gas transmission, llc (company). Company personnel conducted leakage survey at the depicted leak location and its surrounding to investigate the source of the potential natural gas leak. Furthermore, throughout a thorough investigation, it was identified that the potential release was along line sr-696. At approx. 14:25 line sr-696 had been isolated on both ends of the affected section and blowdown commenced from 460 psig line operating pressure. At approx. 15:00 the line affected segment of line sr-696 was fully blown down to atmospheric pressure. The initial national response center (nrc) report no.1293457 and the nrc 48-hour report no.1293539 have been called-in on december 3rd and december 5th respectively. The failed section of the pipeline was sent to a metallurgical laboratory to determine the probable cause behind the failure of the pipeline. The metallurgical failure analysis report of line sr-696 identified that the cause of the leak was internal corrosion. Note: all times were recorded in eastern standard time
| Report Received Date | 2020-12-30 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200135 |
| Supplemental Number | 35347 |
| Report Type | Supplemental Final |
| Operator Id | 2616 PHMSA Enforcement |
| Name | Columbia Gas Transmission, Llc |
| Operator Street Address | 700 Louisiana St. Suite 700 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2020-12-03 13:20:00 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Latitude | 39.63154 Google Maps OpenStreetMap |
| Location Longitude | -82.55488 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1293457 NRC Report How to search |
| Nrc Rpt Datetime | 2020-12-03 14:54:00 |
| Additional Nrc Report Numbers | 1293539 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 200 |
| Intentional Release | 78 |
| 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 | 2020-12-03 15:00:00 |
| Restart Datetime | 2020-12-24 17:00:00 |
| Communication State Fed Ind | No |
| Ignite Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2020-12-03 08:30:00 |
| On Site Datetime | 2020-12-03 08:30:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Oh |
| Onshore Postal Code | 43155 |
| Onshore City Name | Sugar Grove |
| Onshore County Name | Fairfield |
| Designated Location | Not Applicable |
| Pipe Fac Name | Sr-696 |
| Segment Name | Sr-696 Crawford Compressor Station |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 48 |
| Other Underground Facilities | No |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Compressor Station Equipment And Piping |
| Item Involved | Pipe |
| Pipe Type | Pipe Body |
| Pipe Diameter | 30 |
| Puddle Weld Ind | No |
| Pipe Wall Thickness | 0.328 |
| Pipe Smys | 65000 |
| Pipe Specification | X65 |
| Pipe Seam Type | Dsaw |
| Pipe Manufacturer | Unknown |
| Pipe Coating Type | Coal Tar |
| Coating Applied Ind | Yes |
| Installation Year | 1977 |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 2 Location |
| Could Be Hca | No |
| Pir Radius | 698 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 410 |
| Est Cost Intentional Release | 160 |
| Est Cost Prop Damage | 150000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 30000 |
| Est Cost Other Details | Other Costs Include Metallurgical Analysis |
| Gas Cost In Mcf | 2.05 |
| Prpty | 180570 |
| 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 | 460 |
| Gas Flow In Pipe In Mcf | 155000 |
| Mop Psig | 850 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Maop Established Date | 1977-09-15 00:00:00 |
| Maop Reversal Flow Ind | Bi-Directional |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | Yes |
| Gas Odorized Ind | Yes |
| Pipeline Function | Transmission In Storage Field |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| 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 | The unintended release of gas was due to a nuisance leak. |
| 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 Field Exam Basis Ind | Yes |
| Int Metallurgical Basis Ind | Yes |
| Int Other Loc Ind | Yes |
| Corrosion Location Details | Bottom Of The Pipe |
| Corrosion Inhibitors | Yes |
| Corrosion Lining | No |
| Cleaning Dewatering | No |
| Corrosion Coupons | No |
| Collected Data Ind | No |
| Has Hydrtst Conduc Before Ind | No |
| Direct Asmnt Conducted | No |
| Non Destructive Exam Ind | No |
| Preparer Name | K***** R****** A******* |
| Preparer Title | Compliance Specialist |
| Preparer Email | K*************@t*******.com |
| Preparer Telephone | (304)357-2351 |
| Local Contact Name | K***** R****** A******* |
| Local Contact Email | K*************@t*******.com |
| Local Contact Telephone | (304)357-2351 |
| Authorizer Name | P*** S****** |
| Authorizer Title | Us Regulatory Compliance Manager East |
| Authorizer Telephone | (304)550-4866 |
| Authorizer Email | P***********@t*******.com |
| Narrative | On december 3, 2020, at approximately 08:30 the presence of natural gas was identified by a company personnel passing by one of the compressor buildings in crawford compressor station (cs). Crawford cs is a transmission facility located in fairfield county, state of ohio that is operated and maintained by columbia gas transmission, llc (company). Company personnel conducted leakage survey at the depicted leak location and its surrounding to investigate the source of the potential natural gas leak. Furthermore, throughout a thorough investigation, it was identified that the potential release was along line sr-696. At approx. 14:25 line sr-696 had been isolated on both ends of the affected section and blowdown commenced from 460 psig line operating pressure. At approx. 15:00 the line affected segment of line sr-696 was fully blown down to atmospheric pressure. The initial national response center (nrc) report no.1293457 and the nrc 48-hour report no.1293539 have been called-in on december 3rd and december 5th respectively. The failed section of the pipeline was sent to a metallurgical laboratory to determine the probable cause behind the failure of the pipeline. The metallurgical failure analysis report of line sr-696 identified that the cause of the leak was internal corrosion. Note: all times were recorded in eastern standard time |
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