Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2020-09-03 — TX
Operator
Dcp Midstream
Cause
Material Failure Of Pipe Or Weld
Commodity
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$20,000
Incident datetime
2020-09-03 15:36
Report number
Location
TX
Narrative
On september 3rd, 2020 a small pin hole leak was discovered on southern hills pipeline after dig number sohi.S6.015952.T19.D20.N.P3 was excavated for examination. Leak site location was between mlv 39 and mlv 40 on the southern hills system. Leak site was only detectable with a 4-gas detector within one inch from the small pin hole. Excavation crew exited ditch and made notification to ops and integrity groups immediately. Dig site was caution taped off and continuously monitored for any increased vapors and none was found. A plidco 18 inch x 18 inch clamp was installed as temporary repair until a custom plidco sleeve 18 inch x 36 inch is onsite for the permanent repair. The custom clamp was ordered and will be on site mid-november and at that time will be installed per manufacture's recommendation for a permanent repair.
Detailed record list
Report Received Date
2020-10-03 00:00:00
Iyear
2020
Report Number
20200271
Supplemental Number
34365
Report Type
Supplemental Final
Operator Id
31130
Name
Dcp Midstream
Operator Street Address
2331 Citywest Blvd. Hq-08-S812-02
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77042
Local Datetime
2020-09-03 23:26:00
Location Latitude
32.9678439
Location Longitude
-97.9422157
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid)
Unintentional Release Bbls
4.9
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2020-09-03 15:36:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Smaller Than Pinhole Leak
On Site Datetime
2020-09-03 15:36:00
Nrc Rpt Datetime
2020-09-04 00:05:00
Nrc Rpt Num
1286479
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Remotely Controlled
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Southern Hills Ngl Pipeline
Segment Name
Soh-1
Onshore State Abbreviation
Tx
Onshore Postal Code
76487
Onshore City Name
Not Within A Municipality
Onshore County Name
Parker
Designated Location
Milepost/valve Station
Designated Name
Mlv-39
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
48
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Weld, Including Heat-Affected Zone
Weld Subtype
Other
Weld Details
Erw
Installation Year
1956
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
No
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
16
Est Cost Prop Damage
20000
Est Cost Emergency
5000
Est Cost Environmental
0
Est Cost Other
100000
Est Cost Other Details
Custom Plidco Engineered Pipeline Repair Unit Is Being Built For Installation
Prpty
125016
Accident Psig
625
Mop Psig
1169
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
34848
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
No
Cpm Conf Ind
No
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
No control room persons actions or issues caused the leak.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Material Failure Of Pipe Or Weld
Cause Details
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Field Exam Ind
Yes
Failure Type
Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field)
Fatigue Vibr Related
Yes
Failure Subtype
Pressure-Related
Mechanical Stress
Yes
Additional Lack Fusion Ind
Yes
Collected Data Ind
Yes
Cir Trn Wave Mgn Flx Lkg Ind
Yes
Circ Wave Recent Year
2019
Geometry Recent Year
2019
Has Hydrtst Conduc Before Ind
Yes
Hydrtst Most Rcnt Year
2012
Hydrtst Most Rcnt Pressure
1533
Direct Asmnt Conducted
Yes, And An Investigative Dig Was Cunducted At The Point Of The Accident
Direct Asmnt At Pnt Accdnt Yr
2020
Non Destructive Exam Ind
Yes
Exm Handl Ultrasonic Rcnt Year
2020
Exm Wet Mgnt Partcl Rcnt Year
2020
Exm Handl Ultrasonic Rcnt Ind
Yes
Exm Wet Mgnt Partcl Rcnt Ind
Yes
Preparer Name
K**** N****
Preparer Title
Sr. Pipeline Compliance Specialist
Preparer Email
K******@d***********.com
Preparer Telephone
281-433-7583
Prepared Date
2020-10-13 00:00:00
Authorizer Name
J*** P*******
Authorizer Telephone
405-343-5302
Authorizer Title
Pipeline Compliance Manager
Authorizer Email
J*********@d***********.com
Narrative
On september 3rd, 2020 a small pin hole leak was discovered on southern hills pipeline after dig number sohi.S6.015952.T19.D20.N.P3 was excavated for examination. Leak site location was between mlv 39 and mlv 40 on the southern hills system. Leak site was only detectable with a 4-gas detector within one inch from the small pin hole. Excavation crew exited ditch and made notification to ops and integrity groups immediately. Dig site was caution taped off and continuously monitored for any increased vapors and none was found. A plidco 18 inch x 18 inch clamp was installed as temporary repair until a custom plidco sleeve 18 inch x 36 inch is onsite for the permanent repair. The custom clamp was ordered and will be on site mid-november and at that time will be installed per manufacture's recommendation for a permanent repair.
| Report Received Date | 2020-10-03 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200271 |
| Supplemental Number | 34365 |
| Report Type | Supplemental Final |
| Operator Id | 31130 PHMSA Enforcement |
| Name | Dcp Midstream |
| Operator Street Address | 2331 Citywest Blvd. Hq-08-S812-02 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77042 |
| Local Datetime | 2020-09-03 23:26:00 |
| Location Latitude | 32.9678439 Google Maps OpenStreetMap |
| Location Longitude | -97.9422157 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid) |
| Unintentional Release Bbls | 4.9 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2020-09-03 15:36:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Smaller Than Pinhole Leak |
| On Site Datetime | 2020-09-03 15:36:00 |
| Nrc Rpt Datetime | 2020-09-04 00:05:00 |
| Nrc Rpt Num | 1286479 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Remotely Controlled |
| Downstream Valve Type Ind | Manual |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Southern Hills Ngl Pipeline |
| Segment Name | Soh-1 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 76487 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Parker |
| Designated Location | Milepost/valve Station |
| Designated Name | Mlv-39 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 48 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Weld, Including Heat-Affected Zone |
| Weld Subtype | Other |
| Weld Details | Erw |
| Installation Year | 1956 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | No |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 16 |
| Est Cost Prop Damage | 20000 |
| Est Cost Emergency | 5000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 100000 |
| Est Cost Other Details | Custom Plidco Engineered Pipeline Repair Unit Is Being Built For Installation |
| Prpty | 125016 |
| Accident Psig | 625 |
| Mop Psig | 1169 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 34848 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | No |
| Cpm Conf Ind | No |
| 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 | No control room persons actions or issues caused the leak. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Material Failure Of Pipe Or Weld |
| Cause Details | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Field Exam Ind | Yes |
| Failure Type | Original Manufacturing-Related (Not Girth Weld Or Other Welds Formed In The Field) |
| Fatigue Vibr Related | Yes |
| Failure Subtype | Pressure-Related |
| Mechanical Stress | Yes |
| Additional Lack Fusion Ind | Yes |
| Collected Data Ind | Yes |
| Cir Trn Wave Mgn Flx Lkg Ind | Yes |
| Circ Wave Recent Year | 2019 |
| Geometry Recent Year | 2019 |
| Has Hydrtst Conduc Before Ind | Yes |
| Hydrtst Most Rcnt Year | 2012 |
| Hydrtst Most Rcnt Pressure | 1533 |
| Direct Asmnt Conducted | Yes, And An Investigative Dig Was Cunducted At The Point Of The Accident |
| Direct Asmnt At Pnt Accdnt Yr | 2020 |
| Non Destructive Exam Ind | Yes |
| Exm Handl Ultrasonic Rcnt Year | 2020 |
| Exm Wet Mgnt Partcl Rcnt Year | 2020 |
| Exm Handl Ultrasonic Rcnt Ind | Yes |
| Exm Wet Mgnt Partcl Rcnt Ind | Yes |
| Preparer Name | K**** N**** |
| Preparer Title | Sr. Pipeline Compliance Specialist |
| Preparer Email | K******@d***********.com |
| Preparer Telephone | 281-433-7583 |
| Prepared Date | 2020-10-13 00:00:00 |
| Authorizer Name | J*** P******* |
| Authorizer Telephone | 405-343-5302 |
| Authorizer Title | Pipeline Compliance Manager |
| Authorizer Email | J*********@d***********.com |
| Narrative | On september 3rd, 2020 a small pin hole leak was discovered on southern hills pipeline after dig number sohi.S6.015952.T19.D20.N.P3 was excavated for examination. Leak site location was between mlv 39 and mlv 40 on the southern hills system. Leak site was only detectable with a 4-gas detector within one inch from the small pin hole. Excavation crew exited ditch and made notification to ops and integrity groups immediately. Dig site was caution taped off and continuously monitored for any increased vapors and none was found. A plidco 18 inch x 18 inch clamp was installed as temporary repair until a custom plidco sleeve 18 inch x 36 inch is onsite for the permanent repair. The custom clamp was ordered and will be on site mid-november and at that time will be installed per manufacture's recommendation for a permanent repair. |
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