Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2019-06-22 — TX
Operator
Dcp Midstream
Cause
Incorrect Operation
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)
$0
Incident datetime
2019-06-22 02:00
Report number
Location
TX
Narrative
Ngl tech dispatched to dcp sonora pump station by control center at 2:00 am due to stationary gas detector alarm. When the tech arrived on site, a leak was discovered at the 1 inch union on the thermal expansion piping of the sand hills pipeline (sahi-1) pig receiver located inside the pump station. Leak was located at approximately 4:00 am. Ngl leak was on a 1 inch union on the equalizing line tied to the 20 inch receiver at sonora pump station. Leak was isolated by shutting two 1 inch valves on the equalizing line. The tech was able to isolate the leak and tighten the leaking fitting. The equalizing line was then returned to service. There had been recent maintenance activity performed which required the removal and re-installment of the pig receiver the union is associated with. It is believed that the 1" union was not adequately tightened during installation. Dcp has yet to identify the person who failed to properly tighten the fitting that eventually leaked. Dcp will add to the agenda for all ngl operations groups next sequential safety meeting a review of dcp procedure "dcp-mgmt-14 admin procedure commissioning and startup". There is a section of this procedure providing guidance on leak checks prior to start up.
Detailed record list
Report Received Date
2019-07-19 00:00:00
Iyear
2019
Report Number
20190231
Supplemental Number
32558
Report Type
Supplemental
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
2019-06-22 02:00:00
Location Latitude
30.50197
Location Longitude
-100.58379
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
3.54
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations)
Incident Identified Datetime
2019-06-22 02:00:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Leak On Auxliary Line, Main Flow Not Affected. Repair Did Not Require Shutdown.
On Site Datetime
2019-06-22 04:00:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Sonora Pump Station
Segment Name
Sahi-1
Onshore State Abbreviation
Tx
Onshore Postal Code
76950
Onshore City Name
Not Within A Municipality
Onshore County Name
Sutton
Designated Location
Survey Station No.
Designated Name
2711755+00
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Auxiliary Piping (E.g. Drain Lines)
Installation Year
2013
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Connection Failure
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
95
Est Cost Prop Damage
0
Est Cost Emergency
400
Est Cost Environmental
0
Est Cost Other
0
Prpty
495
Accident Psig
1000
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
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
The controller responded appropriately by dispatching a technician as soon as alarm came in.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Equipment Not Installed Properly
Operation Type
Equipment Not Installed Properly
Related Failure Follow Ind
Yes
Category Type
Other Maintenance
Operator Qualification Ind
Yes
Qualified Individuals
Yes, They Were Qualified For The Task(S)
Preparer Name
R* T*** S****
Preparer Title
Sr. Pipeline Compliance Specialist
Preparer Email
R******@d***********.com
Preparer Telephone
979-242-6913
Preparer Fax
979-242-6922
Prepared Date
2019-08-14 00:00:00
Authorizer Name
J*** D* P*******
Authorizer Telephone
405-605-3859
Authorizer Title
Pipeline Compliance Manager
Authorizer Email
J*********@d***********.com
Narrative
Ngl tech dispatched to dcp sonora pump station by control center at 2:00 am due to stationary gas detector alarm. When the tech arrived on site, a leak was discovered at the 1 inch union on the thermal expansion piping of the sand hills pipeline (sahi-1) pig receiver located inside the pump station. Leak was located at approximately 4:00 am. Ngl leak was on a 1 inch union on the equalizing line tied to the 20 inch receiver at sonora pump station. Leak was isolated by shutting two 1 inch valves on the equalizing line. The tech was able to isolate the leak and tighten the leaking fitting. The equalizing line was then returned to service. There had been recent maintenance activity performed which required the removal and re-installment of the pig receiver the union is associated with. It is believed that the 1" union was not adequately tightened during installation. Dcp has yet to identify the person who failed to properly tighten the fitting that eventually leaked. Dcp will add to the agenda for all ngl operations groups next sequential safety meeting a review of dcp procedure "dcp-mgmt-14 admin procedure commissioning and startup". There is a section of this procedure providing guidance on leak checks prior to start up.
| Report Received Date | 2019-07-19 00:00:00 |
|---|---|
| Iyear | 2019 |
| Report Number | 20190231 |
| Supplemental Number | 32558 |
| Report Type | Supplemental |
| 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 | 2019-06-22 02:00:00 |
| Location Latitude | 30.50197 Google Maps OpenStreetMap |
| Location Longitude | -100.58379 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 | 3.54 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations) |
| Incident Identified Datetime | 2019-06-22 02:00:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Leak On Auxliary Line, Main Flow Not Affected. Repair Did Not Require Shutdown. |
| On Site Datetime | 2019-06-22 04:00:00 |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Sonora Pump Station |
| Segment Name | Sahi-1 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 76950 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Sutton |
| Designated Location | Survey Station No. |
| Designated Name | 2711755+00 |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Auxiliary Piping (E.g. Drain Lines) |
| Installation Year | 2013 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Connection Failure |
| 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 | 95 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 400 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 495 |
| Accident Psig | 1000 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| 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 | The controller responded appropriately by dispatching a technician as soon as alarm came in. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Incorrect Operation |
| Cause Details | Equipment Not Installed Properly |
| Operation Type | Equipment Not Installed Properly |
| Related Failure Follow Ind | Yes |
| Category Type | Other Maintenance |
| Operator Qualification Ind | Yes |
| Qualified Individuals | Yes, They Were Qualified For The Task(S) |
| Preparer Name | R* T*** S**** |
| Preparer Title | Sr. Pipeline Compliance Specialist |
| Preparer Email | R******@d***********.com |
| Preparer Telephone | 979-242-6913 |
| Preparer Fax | 979-242-6922 |
| Prepared Date | 2019-08-14 00:00:00 |
| Authorizer Name | J*** D* P******* |
| Authorizer Telephone | 405-605-3859 |
| Authorizer Title | Pipeline Compliance Manager |
| Authorizer Email | J*********@d***********.com |
| Narrative | Ngl tech dispatched to dcp sonora pump station by control center at 2:00 am due to stationary gas detector alarm. When the tech arrived on site, a leak was discovered at the 1 inch union on the thermal expansion piping of the sand hills pipeline (sahi-1) pig receiver located inside the pump station. Leak was located at approximately 4:00 am. Ngl leak was on a 1 inch union on the equalizing line tied to the 20 inch receiver at sonora pump station. Leak was isolated by shutting two 1 inch valves on the equalizing line. The tech was able to isolate the leak and tighten the leaking fitting. The equalizing line was then returned to service. There had been recent maintenance activity performed which required the removal and re-installment of the pig receiver the union is associated with. It is believed that the 1" union was not adequately tightened during installation. Dcp has yet to identify the person who failed to properly tighten the fitting that eventually leaked. Dcp will add to the agenda for all ngl operations groups next sequential safety meeting a review of dcp procedure "dcp-mgmt-14 admin procedure commissioning and startup". There is a section of this procedure providing guidance on leak checks prior to start up. |
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