Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2022-10-05 — MI
Operator
Dtm Louisiana Gathering, Llc
Cause
Incorrect Operation
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2022-10-05 15:37
Report number
Location
MI
Narrative
An actuation of dtm's opp device led to an unintentional release of natural gas exceeding 3 mmcf. This actuation was caused by the incorrect set points on the producer's pressure regulating equipment upstream of the custody transfer point between the two systems.
Detailed record list
Report Received Date
2022-12-16 00:00:00
Iyear
2022
Report Number
20220131
Supplemental Number
39924
Report Type
Supplemental Final
Operator Id
39913
Name
Dtm Louisiana Gathering, Llc
Operator Street Address
500 Woodward Ave. Suite 2900
Operator City Name
Detroit
Operator State Abbreviation
MI
Operator Postal Code
48226
Local Datetime
2022-10-05 15:37:00
Time Zone
Central
Daylight Savings Ind
No
Location Latitude
32.0409
Location Longitude
-93.5421
Nrc Rpt Num
1350334
Nrc Rpt Datetime
2022-10-19 14:36:00
Additional Nrc Report Numbers
1350687
Commodity Released Type
Natural Gas
Unintentional Release
3290
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Routine Shutdown
Communication State Fed Ind
No
Ignite Ind
No
Upstream Action Taken
Valve Closure
Upstream Valve Close Datetime
2022-10-05 16:10:00
Downstream Action Taken
Operational Control
Downstream Oprtnl Cntrl Detail
Downstream Of The Opp Relief Valve Had Already Been Secured Prior To The Release Due To Maintenance
Num Pub Evacuated
0
Incident Identified Datetime
2022-10-05 15:37:00
On Site Datetime
2022-10-05 16:00:00
Confirmed Discovery Datetime
2022-10-05 16:10:00
On Off Shore
Onshore
Onshore State Abbreviation
La
Onshore Postal Code
71032
Onshore City Name
Grand Cane
Onshore County Name
Desoto
Designated Location
Not Applicable
Pipe Fac Name
Dtm Louisiana Gathering Area 1
Segment Name
M5l-308-00a
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 Pipeline, Including Valve Sites
Item Involved
Regulator/control Valve
Installation Year
Unknown
Manufactured Year
Unknown
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Over Pressure Condition From The Upstream Producer's Well Led To The Operation Of A Dtm Over Pressure Protection Device (Relief Valve)
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
197
Heat Damage Ind
No
Non Heat Damage Ind
No
Did Occur In Mca Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
43593
Est Cost Intentional Release
0
Est Cost Prop Damage
0
Est Cost Emergency
5000
Est Cost Other
0
Gas Cost In Mcf
13.25
Prpty
48593
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
1210
Gas Flow In Pipe In Mcf
2100
Mop Psig
1200
Mop Cfr Section
192.619(A)(2)
Maop Established Date
2010-12-17 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
Upstream Valve Type Ind
Manual
Length Segment Isolated
6963
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
Type C Gathering
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Accident Identifier
Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations)
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 control room is a monitor-only for that system and successfully handled the pressure alarm by calling out local field staff.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Other Incorrect Operation
Operation Type
Other Incorrect Operation
Operation Details
Failure Of Producer's Pressure Control And Over Pressure Protection To Control Delivery To Dtm's Gathering Line, Resulting In The Operation Of Dtm's Opp Device.
Related Other Ind
Yes
Operation Related Details
The Producer's Pressure Control Devices Were Set To A Point Above Their Contractual Maximum (1200 Psig)
Category Type
Normal Operating Conditions
Operator Qualification Ind
No
Preparer Name
P****** R******
Preparer Title
Senior Supervisor
Preparer Email
P**************@d**********.com
Preparer Telephone
17163276630
Local Contact Name
R** G***
Local Contact Email
R*******@d**********.com
Local Contact Telephone
3047121758
Authorizer Name
P***** C******
Authorizer Title
Director Codes And Regulatory
Authorizer Telephone
7347304870
Authorizer Email
P*************@d**********.com
Narrative
An actuation of dtm's opp device led to an unintentional release of natural gas exceeding 3 mmcf. This actuation was caused by the incorrect set points on the producer's pressure regulating equipment upstream of the custody transfer point between the two systems.
| Report Received Date | 2022-12-16 00:00:00 |
|---|---|
| Iyear | 2022 |
| Report Number | 20220131 |
| Supplemental Number | 39924 |
| Report Type | Supplemental Final |
| Operator Id | 39913 PHMSA Enforcement |
| Name | Dtm Louisiana Gathering, Llc |
| Operator Street Address | 500 Woodward Ave. Suite 2900 |
| Operator City Name | Detroit |
| Operator State Abbreviation | MI |
| Operator Postal Code | 48226 |
| Local Datetime | 2022-10-05 15:37:00 |
| Time Zone | Central |
| Daylight Savings Ind | No |
| Location Latitude | 32.0409 Google Maps OpenStreetMap |
| Location Longitude | -93.5421 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1350334 NRC Report How to search |
| Nrc Rpt Datetime | 2022-10-19 14:36:00 |
| Additional Nrc Report Numbers | 1350687 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 3290 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Status When Identified | Routine Shutdown |
| Communication State Fed Ind | No |
| Ignite Ind | No |
| Upstream Action Taken | Valve Closure |
| Upstream Valve Close Datetime | 2022-10-05 16:10:00 |
| Downstream Action Taken | Operational Control |
| Downstream Oprtnl Cntrl Detail | Downstream Of The Opp Relief Valve Had Already Been Secured Prior To The Release Due To Maintenance |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2022-10-05 15:37:00 |
| On Site Datetime | 2022-10-05 16:00:00 |
| Confirmed Discovery Datetime | 2022-10-05 16:10:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | La |
| Onshore Postal Code | 71032 |
| Onshore City Name | Grand Cane |
| Onshore County Name | Desoto |
| Designated Location | Not Applicable |
| Pipe Fac Name | Dtm Louisiana Gathering Area 1 |
| Segment Name | M5l-308-00a |
| 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 Pipeline, Including Valve Sites |
| Item Involved | Regulator/control Valve |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Over Pressure Condition From The Upstream Producer's Well Led To The Operation Of A Dtm Over Pressure Protection Device (Relief Valve) |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 197 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Did Occur In Mca Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 43593 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 5000 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 13.25 |
| Prpty | 48593 |
| 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 | 1210 |
| Gas Flow In Pipe In Mcf | 2100 |
| Mop Psig | 1200 |
| Mop Cfr Section | 192.619(A)(2) View CFR 49 §192 |
| Maop Established Date | 2010-12-17 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 |
| Upstream Valve Type Ind | Manual |
| Length Segment Isolated | 6963 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | Type C Gathering |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Accident Identifier | Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Or Pack Calculations) |
| 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 control room is a monitor-only for that system and successfully handled the pressure alarm by calling out local field staff. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Incorrect Operation |
| Cause Details | Other Incorrect Operation |
| Operation Type | Other Incorrect Operation |
| Operation Details | Failure Of Producer's Pressure Control And Over Pressure Protection To Control Delivery To Dtm's Gathering Line, Resulting In The Operation Of Dtm's Opp Device. |
| Related Other Ind | Yes |
| Operation Related Details | The Producer's Pressure Control Devices Were Set To A Point Above Their Contractual Maximum (1200 Psig) |
| Category Type | Normal Operating Conditions |
| Operator Qualification Ind | No |
| Preparer Name | P****** R****** |
| Preparer Title | Senior Supervisor |
| Preparer Email | P**************@d**********.com |
| Preparer Telephone | 17163276630 |
| Local Contact Name | R** G*** |
| Local Contact Email | R*******@d**********.com |
| Local Contact Telephone | 3047121758 |
| Authorizer Name | P***** C****** |
| Authorizer Title | Director Codes And Regulatory |
| Authorizer Telephone | 7347304870 |
| Authorizer Email | P*************@d**********.com |
| Narrative | An actuation of dtm's opp device led to an unintentional release of natural gas exceeding 3 mmcf. This actuation was caused by the incorrect set points on the producer's pressure regulating equipment upstream of the custody transfer point between the two systems. |
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