Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2024-04-11 — TX
Operator
Anr Pipeline Co
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$135
Incident datetime
2024-04-11 00:00 UTC
Report number
Location
TX
Narrative
On march 15, 2024, the monitoring center (mc) received a call from a near-by resident that a vent valve was actively releasing gas at south chester compressor station (cs) in ostega county, near the city of johannesburg, state of michigan. South chester cs is classified as a transmission facility operated and maintained by anr pipeline company, a tc energy entity. Mc personnel dispatched a technician to the site to investigate the reported event. The technician arrived at the site at 20:58 edt, shortly thereafter, a second technician arrived to support the first responder. Immediate actions were taken to verify that no fire existed in lieu of the unintended release of material into atmosphere, then actions were taken to close the emergency shutdown (esd) valve fv-153. At 21:12 edt, the unintended release of material was stopped. The unintentional gas loss was calculated at 39,419mcf. A call was reported of the incident to the nrc (report no. 1393986). There was no property damage, injuries, fatalities, or mandatory evacuations were needed. The 48hr update report to the nrc (report no. 1394062) was submitted on march 17, 2024. Investigation into the shafer actuator discovered an o-ring in the 3-way poppet valve to have failed allowing the pilot gas to vent off which causes the power gas to be applied to the actuator to cycle the valve open as designed. The o-ring has been replaced and the valve was returned back into service on april 1, 2024.
Detailed record list
Report Received Date
2024-04-11 00:00:00
Iyear
2024
Report Number
20240046
Supplemental Number
40275
Report Type
Supplemental Final
Operator Id
Name
Anr Pipeline Co
Operator Street Address
700 Louisiana Street Suite 700
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Time Zone
Eastern
Daylight Savings Ind
Yes
Location Latitude
44.91213
Location Longitude
-84.53927
Nrc Rpt Num
1393986
Additional Nrc Report Numbers
1394062
Commodity Released Type
Natural Gas
Unintentional Release
39419
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
Communication State Fed Ind
Yes
Party Initiated Communication
Local/state/federal Emergency Responder
Ignite Ind
No
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
Mi
Onshore Postal Code
49751
Onshore City Name
Johannesburg
Onshore County Name
Ostego
Designated Location
Not Applicable
Pipe Fac Name
South Chester Compressor Station
Segment Name
Shafer Valve Operator
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Onshore Compressor Station Equipment And Piping
Item Involved
Compressor
Installation Year
1992
Manufactured Year
1992
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Shafer Actuator 3-Way Poppet Valve O-Ring Failed Allowing The Pilot Gas To Vent Off Which Causes The Power Gas To Be Applied To The Actuator To Cycle The Valve Open As Designed.
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
322
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
137967
Est Cost Intentional Release
0
Est Cost Prop Damage
135
Est Cost Emergency
0
Est Cost Other
0
Gas Cost In Mcf
3.5
Prpty
138102
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
2623
Gas Flow In Pipe In Mcf
40700
Mop Psig
4000
Mop Cfr Section
192.619(A)(1)
Maop Established Date
1980-11-04 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 System
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
No
Accident Identifier
Notification From Public
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 monitoring center personnel dispatched the on-call technician to investigate the event.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Other Control Relief Ind
Yes
Other Control Relief Details
Shafer Actuator 3-Way Poppet Valve O-Ring Failed Allowing The Pilot Gas To Vent Off Which Causes The Power Gas To Be Applied To The Actuator To Cycle The Valve Open As Designed.
Eq Additional Other Ind
Yes
Preparer Name
M* N*****
Preparer Title
Compliance Specialist
Preparer Email
M********@t*******.com
Preparer Telephone
3466190609
Local Contact Name
M* N*****
Local Contact Email
M********@t*******.com
Local Contact Telephone
3466190609
Authorizer Name
S******** F*****
Authorizer Title
Manager Dot Pipeline Compliance
Authorizer Telephone
3045505162
Authorizer Email
S***************@t*******.com
Narrative
On march 15, 2024, the monitoring center (mc) received a call from a near-by resident that a vent valve was actively releasing gas at south chester compressor station (cs) in ostega county, near the city of johannesburg, state of michigan. South chester cs is classified as a transmission facility operated and maintained by anr pipeline company, a tc energy entity. Mc personnel dispatched a technician to the site to investigate the reported event. The technician arrived at the site at 20:58 edt, shortly thereafter, a second technician arrived to support the first responder. Immediate actions were taken to verify that no fire existed in lieu of the unintended release of material into atmosphere, then actions were taken to close the emergency shutdown (esd) valve fv-153. At 21:12 edt, the unintended release of material was stopped. The unintentional gas loss was calculated at 39,419mcf. A call was reported of the incident to the nrc (report no. 1393986). There was no property damage, injuries, fatalities, or mandatory evacuations were needed. The 48hr update report to the nrc (report no. 1394062) was submitted on march 17, 2024. Investigation into the shafer actuator discovered an o-ring in the 3-way poppet valve to have failed allowing the pilot gas to vent off which causes the power gas to be applied to the actuator to cycle the valve open as designed. The o-ring has been replaced and the valve was returned back into service on april 1, 2024.
| Report Received Date | 2024-04-11 00:00:00 |
|---|---|
| Iyear | 2024 |
| Report Number | 20240046 |
| Supplemental Number | 40275 |
| Report Type | Supplemental Final |
| Operator Id | 405 PHMSA Enforcement |
| Name | Anr Pipeline Co |
| Operator Street Address | 700 Louisiana Street Suite 700 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Time Zone | Eastern |
| Daylight Savings Ind | Yes |
| Location Latitude | 44.91213 Google Maps OpenStreetMap |
| Location Longitude | -84.53927 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1393986 NRC Report How to search |
| Additional Nrc Report Numbers | 1394062 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 39419 |
| 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 |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Local/state/federal Emergency Responder |
| Ignite Ind | No |
| Num Pub Evacuated | 0 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Mi |
| Onshore Postal Code | 49751 |
| Onshore City Name | Johannesburg |
| Onshore County Name | Ostego |
| Designated Location | Not Applicable |
| Pipe Fac Name | South Chester Compressor Station |
| Segment Name | Shafer Valve Operator |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Onshore Compressor Station Equipment And Piping |
| Item Involved | Compressor |
| Installation Year | 1992 |
| Manufactured Year | 1992 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Shafer Actuator 3-Way Poppet Valve O-Ring Failed Allowing The Pilot Gas To Vent Off Which Causes The Power Gas To Be Applied To The Actuator To Cycle The Valve Open As Designed. |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 322 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 137967 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 135 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 3.5 |
| Prpty | 138102 |
| 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 | 2623 |
| Gas Flow In Pipe In Mcf | 40700 |
| Mop Psig | 4000 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Maop Established Date | 1980-11-04 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 System |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | No |
| Accident Identifier | Notification From Public |
| 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 monitoring center personnel dispatched the on-call technician to investigate the event. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Other Control Relief Ind | Yes |
| Other Control Relief Details | Shafer Actuator 3-Way Poppet Valve O-Ring Failed Allowing The Pilot Gas To Vent Off Which Causes The Power Gas To Be Applied To The Actuator To Cycle The Valve Open As Designed. |
| Eq Additional Other Ind | Yes |
| Preparer Name | M* N***** |
| Preparer Title | Compliance Specialist |
| Preparer Email | M********@t*******.com |
| Preparer Telephone | 3466190609 |
| Local Contact Name | M* N***** |
| Local Contact Email | M********@t*******.com |
| Local Contact Telephone | 3466190609 |
| Authorizer Name | S******** F***** |
| Authorizer Title | Manager Dot Pipeline Compliance |
| Authorizer Telephone | 3045505162 |
| Authorizer Email | S***************@t*******.com |
| Narrative | On march 15, 2024, the monitoring center (mc) received a call from a near-by resident that a vent valve was actively releasing gas at south chester compressor station (cs) in ostega county, near the city of johannesburg, state of michigan. South chester cs is classified as a transmission facility operated and maintained by anr pipeline company, a tc energy entity. Mc personnel dispatched a technician to the site to investigate the reported event. The technician arrived at the site at 20:58 edt, shortly thereafter, a second technician arrived to support the first responder. Immediate actions were taken to verify that no fire existed in lieu of the unintended release of material into atmosphere, then actions were taken to close the emergency shutdown (esd) valve fv-153. At 21:12 edt, the unintended release of material was stopped. The unintentional gas loss was calculated at 39,419mcf. A call was reported of the incident to the nrc (report no. 1393986). There was no property damage, injuries, fatalities, or mandatory evacuations were needed. The 48hr update report to the nrc (report no. 1394062) was submitted on march 17, 2024. Investigation into the shafer actuator discovered an o-ring in the 3-way poppet valve to have failed allowing the pilot gas to vent off which causes the power gas to be applied to the actuator to cycle the valve open as designed. The o-ring has been replaced and the valve was returned back into service on april 1, 2024. |
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