Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2013-12-18 — OK
Operator
Questar Pipeline Company
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$100
Incident datetime
2013-12-18 08:21
Report number
Location
OK
Narrative
Created supplemental to indicate that the report is final. At 01:50 a broken 1" x 3/4" threaded bushing to a pressure transducer resulted in an unintended natural gas loss of approximately 4.98 mmscf. A questar employee arrived on site at 08:21 and confirmed that the bushing leading to the pressure transducer was broken and isolated the area by closing 2 manual block valves. The bushing and valve were replaced shortly thereafter. After this incident questar pipeline added an alarm on the scada system for this pressure transducer.
Detailed record list
Report Received Date
2014-01-17 00:00:00
Iyear
2013
Report Number
20140008
Supplemental Number
16464
Report Type
Supplemental Final
Operator Id
12874
Name
Questar Pipeline Company
Operator Street Address
One Williams Center
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74172
Local Datetime
2013-12-18 01:50:00
Location Latitude
39.908284
Location Longitude
-108.294385
Nrc Rpt Num
1068887
Nrc Rpt Datetime
2013-12-18 08:41:00
Commodity Released Type
Natural Gas
Unintentional Release
4980
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
Above Ground Piping Isolated And Repaired.
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2013-12-18 08:21:00
On Site Datetime
2013-12-18 08:21:00
On Off Shore
Onshore
Onshore State Abbreviation
Co
Onshore Postal Code
81641
Onshore City Name
Meeker
Onshore County Name
Rio Blanco
Designated Location
Survey Station No.
Designated Name
206+60
Pipe Fac Name
Ml 126, Hatch Gulch
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 Pipeline, Including Valve Sites
Item Involved
Other
Item Involved Details
1" X 3/4" Bushing
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Connection Failure
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
27
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
21165
Est Cost Intentional Release
0
Est Cost Prop Damage
100
Est Cost Emergency
300
Est Cost Other
0
Est Cost Other Details
*basis For 7.f Was $4.25 Per Mcf
Prpty
21565
Accident Psig
1081
Mop Psig
1480
Mop Cfr Section
Not On Omb-Approved Form When Submitted
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Length Segment Isolated
15
Internal Inspection Ind
No
Other Restrictions Ind
Yes
Operation Complications 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
Yes
Accident Identifier
Other
Accident Details
Adjacent Foreign Pipeline 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 control room was manned when the incident occured. Staff in the control room had no way of knowing that a leak occured at the 1" x 3/4" threaded bushing as there was no alarm set at the pressure transducer. Therefore, the control room had no direct way of knowing that there was a leak occuring until confirmed on-site. A control room alarm has now been added to that pressure transducer.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Threaded Connection/coupling Failure
Eq Failure Type
Threaded Connection/coupling Failure
Other Stripped Ind
Threaded Fitting
Eq Additional Other Ind
Yes
Eq Additional Other Details
Fatigue Crack In 1" X 3/4 "steel Bushing
Preparer Name
C*** W******
Preparer Title
Supervisor Pipeline Compliance
Preparer Email
C***********@q******.com
Preparer Telephone
801-324-3814
Authorizer Name
R** J********
Authorizer Title
Vice President Gas Control And Operations
Authorizer Telephone
801-324-5145
Authorizer Email
R************@q******.com
Narrative
Created supplemental to indicate that the report is final. At 01:50 a broken 1" x 3/4" threaded bushing to a pressure transducer resulted in an unintended natural gas loss of approximately 4.98 mmscf. A questar employee arrived on site at 08:21 and confirmed that the bushing leading to the pressure transducer was broken and isolated the area by closing 2 manual block valves. The bushing and valve were replaced shortly thereafter. After this incident questar pipeline added an alarm on the scada system for this pressure transducer.
| Report Received Date | 2014-01-17 00:00:00 |
|---|---|
| Iyear | 2013 |
| Report Number | 20140008 |
| Supplemental Number | 16464 |
| Report Type | Supplemental Final |
| Operator Id | 12874 PHMSA Enforcement |
| Name | Questar Pipeline Company |
| Operator Street Address | One Williams Center |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74172 |
| Local Datetime | 2013-12-18 01:50:00 |
| Location Latitude | 39.908284 Google Maps OpenStreetMap |
| Location Longitude | -108.294385 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1068887 NRC Report How to search |
| Nrc Rpt Datetime | 2013-12-18 08:41:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 4980 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Above Ground Piping Isolated And Repaired. |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2013-12-18 08:21:00 |
| On Site Datetime | 2013-12-18 08:21:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Co |
| Onshore Postal Code | 81641 |
| Onshore City Name | Meeker |
| Onshore County Name | Rio Blanco |
| Designated Location | Survey Station No. |
| Designated Name | 206+60 |
| Pipe Fac Name | Ml 126, Hatch Gulch |
| 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 Pipeline, Including Valve Sites |
| Item Involved | Other |
| Item Involved Details | 1" X 3/4" Bushing |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Connection Failure |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 27 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 21165 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 100 |
| Est Cost Emergency | 300 |
| Est Cost Other | 0 |
| Est Cost Other Details | *basis For 7.f Was $4.25 Per Mcf |
| Prpty | 21565 |
| Accident Psig | 1081 |
| Mop Psig | 1480 |
| Mop Cfr Section | Not On Omb-Approved Form When Submitted View CFR 49 §192 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Length Segment Isolated | 15 |
| Internal Inspection Ind | No |
| Other Restrictions Ind | Yes |
| Operation Complications 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 | Yes |
| Accident Identifier | Other |
| Accident Details | Adjacent Foreign Pipeline 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 control room was manned when the incident occured. Staff in the control room had no way of knowing that a leak occured at the 1" x 3/4" threaded bushing as there was no alarm set at the pressure transducer. Therefore, the control room had no direct way of knowing that there was a leak occuring until confirmed on-site. A control room alarm has now been added to that pressure transducer. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Threaded Connection/coupling Failure |
| Eq Failure Type | Threaded Connection/coupling Failure |
| Other Stripped Ind | Threaded Fitting |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Fatigue Crack In 1" X 3/4 "steel Bushing |
| Preparer Name | C*** W****** |
| Preparer Title | Supervisor Pipeline Compliance |
| Preparer Email | C***********@q******.com |
| Preparer Telephone | 801-324-3814 |
| Authorizer Name | R** J******** |
| Authorizer Title | Vice President Gas Control And Operations |
| Authorizer Telephone | 801-324-5145 |
| Authorizer Email | R************@q******.com |
| Narrative | Created supplemental to indicate that the report is final. At 01:50 a broken 1" x 3/4" threaded bushing to a pressure transducer resulted in an unintended natural gas loss of approximately 4.98 mmscf. A questar employee arrived on site at 08:21 and confirmed that the bushing leading to the pressure transducer was broken and isolated the area by closing 2 manual block valves. The bushing and valve were replaced shortly thereafter. After this incident questar pipeline added an alarm on the scada system for this pressure transducer. |
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