Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2022-11-06 — PA
Operator
Equitrans Midstream Corporation
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$14,495,729
Incident datetime
2022-11-06 16:15
Report number
Location
PA
Narrative
Equitrans rager mountain storage field was shut-in on 11/1/2022 to perform routine shut-in inventory verification testing. On november 6, 2022, equitrans personnel was notified of an issue and arrived on site at gsw2244 at approximately 4:15 pm. Upon arrival, personnel found gas escaping from the 9 5/8" casing through a 2" vent (annular vent). The site was secured and an investigation by equitrans and cudd pressure control ensued. Storage gas from the 7" production casing was communicating with the 9 5/8" intermediate casing and venting to atmosphere. Equitrans and cudd coordinated to safely address the migrating gas using a dynamic kill procedure. On 11/19/2022, a temporary plug was set in the 7" casing followed by a second temporary plug and approximately 270' of cement on 11/20/2022. An investigation is underway to determine the root cause failure analysis (rcfa) of the natural gas release. In the interim, equitrans plans to perform the following activities to inform the rcfa and ensure well integrity per PHMSA safety regulations and API 1171. 1- installing real time pressure monitors on the annulus of all rager mountain gas storage wells. 2- reanalyzing the 2016 vertilog wireline results of the production casing from well 2244 using the most recent software. 3- conducting a new wireline survey (assessment) of the production casings for the other wells with a high definition, metal loss vertilog tool. 4- evaluating any other mechanical gas migration pathways between the production and intermediate casing 5- reviewing existing storage well emergency preparedness and response procedures based on lessons learned from shutting in well 2244 to identify and implement potential improvements. ***february 2023 supplement*** notification of the incident clarification: at 3:28 pm on 11/6/2022 equitrans was notified by another operator in the area (peoples) who received a notification from cambria county 911 service. Emergency responders were on site when equitrans arrived at 4:15 pm. Equitrans employees verified the asset was equitrans gsw 2244 and were in communication with emergency responders on site. ***may 2024 supplement*** the rcfa was submitted to PHMSA on august 24, 2023. An unredacted copy is available in PHMSA's public reading room. The rcfa includes, among other things, the direct and root causes of the incident and the allotment of inventory change. Equitrans later submitted a remedial work plan and an injection plan to PHMSA seeking authority to resume injections at rager using all wells except three, which remain disconnected. On october 2, 2023, PHMSA approved the injection plan. Equitrans began injection at rager on october 5, 2023. On november 16, 2023, PHMSA issued a letter to equitrans approving its request to remove all pressure restriction at rager. In this final report, equitrans estimates gas costs based on a hypothetical unit price to replace the entirety of the estimated 1.29 bcf of inventory reduction. Equitrans includes this information for reporting purposes only; including such information does not require or imply that equitrans will incur any such costs.
Detailed record list
Report Received Date
2022-12-05 00:00:00
Iyear
2022
Report Number
20220127
Supplemental Number
39573
Report Type
Supplemental Final
Operator Id
31604
Name
Equitrans Midstream Corporation
Operator Street Address
2200 Energy Drive
Operator City Name
Canonsburg
Operator State Abbreviation
PA
Operator Postal Code
15317
Local Datetime
2022-11-06 15:28:00
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Latitude
40.411585
Location Longitude
-78.945035
Nrc Rpt Num
1351880
Nrc Rpt Datetime
2022-11-06 17:03:00
Additional Nrc Report Numbers
1352149
Commodity Released Type
Natural Gas
Unintentional Release
1290000
Intentional Release
0
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
2022-11-20 09:56:00
Restart Datetime
2023-10-05 08:26:00
Communication State Fed Ind
Yes
Party Initiated Communication
Local/state/federal Emergency Responder
Initial Responder Com Datetime
2022-11-06 16:15:00
Ignite Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2022-11-06 16:15:00
On Site Datetime
2022-11-06 16:15:00
Confirmed Discovery Datetime
2022-11-06 16:15:00
On Off Shore
Onshore
Onshore State Abbreviation
Pa
Onshore Postal Code
15906
Onshore City Name
Not Within A Municipality
Onshore County Name
Cambria
Designated Location
Not Applicable
Pipe Fac Name
Rager Mountain Storage
Segment Name
George L. Reade #1 Storage Well/api:37-021-20005
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Belowground Storage Or Aboveground Storage Vessel, Including Attached Appurtenance
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Belowground Storage, Including Associated Equipment And Piping
Item Involved
Underground Gas Storage Or Cavern
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
243
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
2257500
Est Cost Intentional Release
0
Est Cost Prop Damage
14495729
Est Cost Emergency
4156263
Est Cost Other
0
Gas Cost In Mcf
1.75
Prpty
20909492
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
3088
Gas Flow In Pipe In Mcf
0
Mop Psig
3200
Mop Cfr Section
Other
Mop Cfr Section Details
Ferc Order Cp15-553 3200 Psig, Discovery Pressure On Well 10/16/1965 - 3193 Psig
Maop Established Date
1965-10-16 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized Ind
No
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
Other
Accident Details
Another Operator In The Area Notified Etrn Gas Control
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 monitored pressure was not affected at time of incident, due to the well being shut-in as part of the inventory verification test.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
General Corrosion
Atmosphere Corrosion Ind
Yes
Field Exam Basis Ind
Yes
Metallurgical Basis Ind
Yes
Underground Location
No
Externally Coated
No
Prior Damage
N/a Bare/ineffectively Coated Pipe
Extrnl Cor Atmospheric Ind
Yes
Preparer Name
J*** B*****
Preparer Title
Sr. Engineer
Preparer Email
J******@e*****************.com
Preparer Telephone
304-641-1112
Local Contact Name
J**** L****
Local Contact Email
J*****@e*****************.com
Local Contact Telephone
412-295-3962
Authorizer Name
R***** C*****
Authorizer Title
Svp Mvp Project Execution Storage And Asset Integr
Authorizer Telephone
304-552-6906
Authorizer Email
R******@e*****************.com
Narrative
Equitrans rager mountain storage field was shut-in on 11/1/2022 to perform routine shut-in inventory verification testing. On november 6, 2022, equitrans personnel was notified of an issue and arrived on site at gsw2244 at approximately 4:15 pm. Upon arrival, personnel found gas escaping from the 9 5/8" casing through a 2" vent (annular vent). The site was secured and an investigation by equitrans and cudd pressure control ensued. Storage gas from the 7" production casing was communicating with the 9 5/8" intermediate casing and venting to atmosphere. Equitrans and cudd coordinated to safely address the migrating gas using a dynamic kill procedure. On 11/19/2022, a temporary plug was set in the 7" casing followed by a second temporary plug and approximately 270' of cement on 11/20/2022. An investigation is underway to determine the root cause failure analysis (rcfa) of the natural gas release. In the interim, equitrans plans to perform the following activities to inform the rcfa and ensure well integrity per PHMSA safety regulations and API 1171. 1- installing real time pressure monitors on the annulus of all rager mountain gas storage wells. 2- reanalyzing the 2016 vertilog wireline results of the production casing from well 2244 using the most recent software. 3- conducting a new wireline survey (assessment) of the production casings for the other wells with a high definition, metal loss vertilog tool. 4- evaluating any other mechanical gas migration pathways between the production and intermediate casing 5- reviewing existing storage well emergency preparedness and response procedures based on lessons learned from shutting in well 2244 to identify and implement potential improvements. ***february 2023 supplement*** notification of the incident clarification: at 3:28 pm on 11/6/2022 equitrans was notified by another operator in the area (peoples) who received a notification from cambria county 911 service. Emergency responders were on site when equitrans arrived at 4:15 pm. Equitrans employees verified the asset was equitrans gsw 2244 and were in communication with emergency responders on site. ***may 2024 supplement*** the rcfa was submitted to PHMSA on august 24, 2023. An unredacted copy is available in PHMSA's public reading room. The rcfa includes, among other things, the direct and root causes of the incident and the allotment of inventory change. Equitrans later submitted a remedial work plan and an injection plan to PHMSA seeking authority to resume injections at rager using all wells except three, which remain disconnected. On october 2, 2023, PHMSA approved the injection plan. Equitrans began injection at rager on october 5, 2023. On november 16, 2023, PHMSA issued a letter to equitrans approving its request to remove all pressure restriction at rager. In this final report, equitrans estimates gas costs based on a hypothetical unit price to replace the entirety of the estimated 1.29 bcf of inventory reduction. Equitrans includes this information for reporting purposes only; including such information does not require or imply that equitrans will incur any such costs.
| Report Received Date | 2022-12-05 00:00:00 |
|---|---|
| Iyear | 2022 |
| Report Number | 20220127 |
| Supplemental Number | 39573 |
| Report Type | Supplemental Final |
| Operator Id | 31604 PHMSA Enforcement |
| Name | Equitrans Midstream Corporation |
| Operator Street Address | 2200 Energy Drive |
| Operator City Name | Canonsburg |
| Operator State Abbreviation | PA |
| Operator Postal Code | 15317 |
| Local Datetime | 2022-11-06 15:28:00 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Latitude | 40.411585 Google Maps OpenStreetMap |
| Location Longitude | -78.945035 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1351880 NRC Report How to search |
| Nrc Rpt Datetime | 2022-11-06 17:03:00 |
| Additional Nrc Report Numbers | 1352149 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 1290000 |
| Intentional Release | 0 |
| 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 | 2022-11-20 09:56:00 |
| Restart Datetime | 2023-10-05 08:26:00 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Local/state/federal Emergency Responder |
| Initial Responder Com Datetime | 2022-11-06 16:15:00 |
| Ignite Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2022-11-06 16:15:00 |
| On Site Datetime | 2022-11-06 16:15:00 |
| Confirmed Discovery Datetime | 2022-11-06 16:15:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Pa |
| Onshore Postal Code | 15906 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Cambria |
| Designated Location | Not Applicable |
| Pipe Fac Name | Rager Mountain Storage |
| Segment Name | George L. Reade #1 Storage Well/api:37-021-20005 |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Belowground Storage Or Aboveground Storage Vessel, Including Attached Appurtenance |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Belowground Storage, Including Associated Equipment And Piping |
| Item Involved | Underground Gas Storage Or Cavern |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 243 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 2257500 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 14495729 |
| Est Cost Emergency | 4156263 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 1.75 |
| Prpty | 20909492 |
| 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 | 3088 |
| Gas Flow In Pipe In Mcf | 0 |
| Mop Psig | 3200 |
| Mop Cfr Section | Other View CFR 49 §192 |
| Mop Cfr Section Details | Ferc Order Cp15-553 3200 Psig, Discovery Pressure On Well 10/16/1965 - 3193 Psig |
| Maop Established Date | 1965-10-16 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | No |
| 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 | Other |
| Accident Details | Another Operator In The Area Notified Etrn Gas Control |
| 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 monitored pressure was not affected at time of incident, due to the well being shut-in as part of the inventory verification test. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | General Corrosion |
| Atmosphere Corrosion Ind | Yes |
| Field Exam Basis Ind | Yes |
| Metallurgical Basis Ind | Yes |
| Underground Location | No |
| Externally Coated | No |
| Prior Damage | N/a Bare/ineffectively Coated Pipe |
| Extrnl Cor Atmospheric Ind | Yes |
| Preparer Name | J*** B***** |
| Preparer Title | Sr. Engineer |
| Preparer Email | J******@e*****************.com |
| Preparer Telephone | 304-641-1112 |
| Local Contact Name | J**** L**** |
| Local Contact Email | J*****@e*****************.com |
| Local Contact Telephone | 412-295-3962 |
| Authorizer Name | R***** C***** |
| Authorizer Title | Svp Mvp Project Execution Storage And Asset Integr |
| Authorizer Telephone | 304-552-6906 |
| Authorizer Email | R******@e*****************.com |
| Narrative | Equitrans rager mountain storage field was shut-in on 11/1/2022 to perform routine shut-in inventory verification testing. On november 6, 2022, equitrans personnel was notified of an issue and arrived on site at gsw2244 at approximately 4:15 pm. Upon arrival, personnel found gas escaping from the 9 5/8" casing through a 2" vent (annular vent). The site was secured and an investigation by equitrans and cudd pressure control ensued. Storage gas from the 7" production casing was communicating with the 9 5/8" intermediate casing and venting to atmosphere. Equitrans and cudd coordinated to safely address the migrating gas using a dynamic kill procedure. On 11/19/2022, a temporary plug was set in the 7" casing followed by a second temporary plug and approximately 270' of cement on 11/20/2022. An investigation is underway to determine the root cause failure analysis (rcfa) of the natural gas release. In the interim, equitrans plans to perform the following activities to inform the rcfa and ensure well integrity per PHMSA safety regulations and API 1171. 1- installing real time pressure monitors on the annulus of all rager mountain gas storage wells. 2- reanalyzing the 2016 vertilog wireline results of the production casing from well 2244 using the most recent software. 3- conducting a new wireline survey (assessment) of the production casings for the other wells with a high definition, metal loss vertilog tool. 4- evaluating any other mechanical gas migration pathways between the production and intermediate casing 5- reviewing existing storage well emergency preparedness and response procedures based on lessons learned from shutting in well 2244 to identify and implement potential improvements. ***february 2023 supplement*** notification of the incident clarification: at 3:28 pm on 11/6/2022 equitrans was notified by another operator in the area (peoples) who received a notification from cambria county 911 service. Emergency responders were on site when equitrans arrived at 4:15 pm. Equitrans employees verified the asset was equitrans gsw 2244 and were in communication with emergency responders on site. ***may 2024 supplement*** the rcfa was submitted to PHMSA on august 24, 2023. An unredacted copy is available in PHMSA's public reading room. The rcfa includes, among other things, the direct and root causes of the incident and the allotment of inventory change. Equitrans later submitted a remedial work plan and an injection plan to PHMSA seeking authority to resume injections at rager using all wells except three, which remain disconnected. On october 2, 2023, PHMSA approved the injection plan. Equitrans began injection at rager on october 5, 2023. On november 16, 2023, PHMSA issued a letter to equitrans approving its request to remove all pressure restriction at rager. In this final report, equitrans estimates gas costs based on a hypothetical unit price to replace the entirety of the estimated 1.29 bcf of inventory reduction. Equitrans includes this information for reporting purposes only; including such information does not require or imply that equitrans will incur any such costs. |
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