GTG incident on 2024-09-06 — OK

Operator
Oneok Gas Transportation, Llc
Cause
Incorrect Operation
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities 0 injuries
Property damage (nominal)
$0
Incident datetime
2024-09-06 00:00 UTC
Report number
Location
OK
Narrative
On 8/8/2024, an operations decision was made to change operational flow within the facility. This was a new valve configuration to meet customer demand. During the operational valve realignments, psv 114 was not identified thus no adjustments were made to the psv. On 8/9/2024, upon changing the operational alignment edmond storage pipeline a1129 to a4002 pressure relief valve (psv114) activated as designed. With the activation of the psv, there was a release of 26.1 mmcf. Operations has conducted a cause map of the incident. This review included a hazard analysis of each flow path through the facility to ensure appropriate protection is in place. Additionally, all operational flow changes will go through a review process prior to making future changes to minimize the opportunity for reoccurrence.
Detailed record list
Report Received Date
2024-09-06 00:00:00
Iyear
2024
Report Number
20240105
Supplemental Number
40029
Report Type
Supplemental Final
Operator Id
Name
Oneok Gas Transportation, Llc
Operator Street Address
100 West Fifth Street
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74103
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
Location Longitude
Nrc Rpt Num
Additional Nrc Report Numbers
1407562
Commodity Released Type
Natural Gas
Unintentional Release
26101
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
No
Shutdown Explain
No Facility Remained In Normal Operation
Communication State Fed Ind
No
Ignite Ind
No
Num Pub Evacuated
0
On Off Shore
Onshore
Onshore State Abbreviation
Ok
Onshore Postal Code
73025
Onshore City Name
Edmond
Onshore County Name
Logan
Designated Location
Not Applicable
Pipe Fac Name
Ogt West Edmond Storage
Segment Name
A-4002
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
Intrastate
System Part Involved
Onshore Compressor Station Equipment And Piping
Item Involved
Regulator/control Valve
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Pressure Relief Valve Release.
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
663
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
43458
Est Cost Intentional Release
0
Est Cost Prop Damage
0
Est Cost Emergency
0
Est Cost Other
0
Gas Cost In Mcf
1.665
Prpty
43458
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
760
Gas Flow In Pipe In Mcf
0
Mop Psig
740
Mop Cfr Section
192.619(A)(1)
Maop Established Date
2002-03-26 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Exceeded Maop, But Did Not Exceed The Applicable Allowance In 192.201
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
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 pipe segment that was impacted by the high pressure was isolated from the psv transmitter.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Pipeline Or Equipment Overpressured
Operation Type
Pipeline Or Equipment Overpressured
Related Inadequate Proc Ind
Yes
Category Type
Normal Operating Conditions
Operator Qualification Ind
No
Preparer Name
A*** T****
Preparer Title
Regulatory Compliance Supervisor
Preparer Email
A*********@o****.com
Preparer Telephone
262-374-2756
Local Contact Name
A*** T****
Local Contact Email
A*********@o****.com
Local Contact Telephone
2623742756
Authorizer Name
J**** A********
Authorizer Title
Vp Natural Gas Operations
Authorizer Telephone
9182462935
Authorizer Email
J**************@o****.com
Narrative
On 8/8/2024, an operations decision was made to change operational flow within the facility. This was a new valve configuration to meet customer demand. During the operational valve realignments, psv 114 was not identified thus no adjustments were made to the psv. On 8/9/2024, upon changing the operational alignment edmond storage pipeline a1129 to a4002 pressure relief valve (psv114) activated as designed. With the activation of the psv, there was a release of 26.1 mmcf. Operations has conducted a cause map of the incident. This review included a hazard analysis of each flow path through the facility to ensure appropriate protection is in place. Additionally, all operational flow changes will go through a review process prior to making future changes to minimize the opportunity for reoccurrence.
Report Received Date 2024-09-06 00:00:00
Iyear 2024
Report Number 20240105
Supplemental Number 40029
Report Type Supplemental Final
Operator Id 31286 PHMSA Enforcement
Name Oneok Gas Transportation, Llc
Operator Street Address 100 West Fifth Street
Operator City Name Tulsa
Operator State Abbreviation OK
Operator Postal Code 74103
Time Zone Central
Daylight Savings Ind Yes
Location Latitude 35.74602 Google Maps OpenStreetMap
Location Longitude -97.63523 Google Maps OpenStreetMap
Nrc Rpt Num 1407432 NRC Report How to search
Additional Nrc Report Numbers 1407562
Commodity Released Type Natural Gas
Unintentional Release 26101
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 No
Shutdown Explain No Facility Remained In Normal Operation
Communication State Fed Ind No
Ignite Ind No
Num Pub Evacuated 0
On Off Shore Onshore
Onshore State Abbreviation Ok
Onshore Postal Code 73025
Onshore City Name Edmond
Onshore County Name Logan
Designated Location Not Applicable
Pipe Fac Name Ogt West Edmond Storage
Segment Name A-4002
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 Intrastate
System Part Involved Onshore Compressor Station Equipment And Piping
Item Involved Regulator/control Valve
Installation Year Unknown
Manufactured Year Unknown
Material Involved Carbon Steel
Release Type Other
Release Type Details Pressure Relief Valve Release.
Class Location Type Class 1 Location
Could Be Hca No
Pir Radius 663
Heat Damage Ind No
Non Heat Damage Ind No
Did Occur In Mca Ind No
Est Cost Oper Paid 0
Est Cost Unintentional Release 43458
Est Cost Intentional Release 0
Est Cost Prop Damage 0
Est Cost Emergency 0
Est Cost Other 0
Gas Cost In Mcf 1.665
Prpty 43458
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 760
Gas Flow In Pipe In Mcf 0
Mop Psig 740
Mop Cfr Section 192.619(A)(1) View CFR 49 §192
Maop Established Date 2002-03-26 00:00:00
Maop Reversal Flow Ind No
Accident Pressure Pressure Exceeded Maop, But Did Not Exceed The Applicable Allowance In 192.201
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 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 pipe segment that was impacted by the high pressure was isolated from the psv transmitter.
Employee Drug Test Ind No
Contractor Drug Test Ind No
Cause Incorrect Operation
Cause Details Pipeline Or Equipment Overpressured
Operation Type Pipeline Or Equipment Overpressured
Related Inadequate Proc Ind Yes
Category Type Normal Operating Conditions
Operator Qualification Ind No
Preparer Name A*** T****
Preparer Title Regulatory Compliance Supervisor
Preparer Email A*********@o****.com
Preparer Telephone 262-374-2756
Local Contact Name A*** T****
Local Contact Email A*********@o****.com
Local Contact Telephone 2623742756
Authorizer Name J**** A********
Authorizer Title Vp Natural Gas Operations
Authorizer Telephone 9182462935
Authorizer Email J**************@o****.com
Narrative On 8/8/2024, an operations decision was made to change operational flow within the facility. This was a new valve configuration to meet customer demand. During the operational valve realignments, psv 114 was not identified thus no adjustments were made to the psv. On 8/9/2024, upon changing the operational alignment edmond storage pipeline a1129 to a4002 pressure relief valve (psv114) activated as designed. With the activation of the psv, there was a release of 26.1 mmcf. Operations has conducted a cause map of the incident. This review included a hazard analysis of each flow path through the facility to ensure appropriate protection is in place. Additionally, all operational flow changes will go through a review process prior to making future changes to minimize the opportunity for reoccurrence.

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