Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2014-11-27 — KY
Operator
Southern Star Central Gas Pipeline, Inc
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$2,100
Incident datetime
2014-11-27 03:20
Report number
Location
KY
Narrative
On 11/27/2014 at 03:20 ssc gas control began receiving alarms that lasted approximately 15 minutes. During this time the pressures on the "guymon 26in." were observed as decreasing and continued for approximately 40 minutes. Gas control attempted to investigate the potential cause and after no reasoning could be determined, ssc operations were called at 03:50. Ssc operations arrived at the wakita compressor station and confirmed with gas control, at 04:16, the cap on the relief valve was off and it was the expected cause of the drop in pressure. By 11:29 all relief valves between wakita station and the upstream alva station had been confirmed as not blowing. The set-points were tested on the relief and found to work correctly. The station piping was isolated until 12/2 when the relief was rebuilt and tested again.
Detailed record list
Report Received Date
2014-12-19 00:00:00
Iyear
2014
Report Number
20140145
Supplemental Number
16590
Report Type
Original Final
Operator Id
31711
Name
Southern Star Central Gas Pipeline, Inc
Operator Street Address
4700 Highway 56; Box 20010
Operator City Name
Owensboro
Operator State Abbreviation
KY
Operator Postal Code
42301
Local Datetime
2014-11-27 03:17:00
Location Latitude
36.86646759
Location Longitude
-97.9307755
Nrc Rpt Num
1102104
Nrc Rpt Datetime
2014-11-27 05:55:00
Commodity Released Type
Natural Gas
Unintentional Release
3910
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
The Relief Valve Failed At The Wrong Set Point. The Relief Valve Was Shut In.
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2014-11-27 03:20:00
On Site Datetime
2014-11-27 04:16:00
On Off Shore
Onshore
Onshore State Abbreviation
Ok
Onshore Postal Code
73771
Onshore City Name
Wakita
Onshore County Name
Grant
Designated Location
Survey Station No.
Designated Name
150/10321+78
Pipe Fac Name
Wakita Station-Line N
Segment Name
Oklahoma Hugoton 26"
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 Compressor Station Equipment And Piping
Item Involved
Esd System, But Excluding Product Drain Lines And Tubing
Installation Year
1965
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
The Relief Valve Malfunctioned And Started To Relieve Gas Below The Set Point.
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
236
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
16031
Est Cost Intentional Release
0
Est Cost Prop Damage
2100
Est Cost Emergency
1300
Est Cost Other
0
Prpty
19431
Accident Psig
542
Mop Psig
720
Mop Cfr Section
Not On Omb-Approved Form When Submitted
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Pipeline Function
Transmission System
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
Yes, specify investigation result(s): (select all that apply)
Invest Incorrect Action Ind
Yes
Employee Drug Test Ind
Yes
Contractor Drug Test Ind
No
Num Employees Tested
1
Num Employees Failed
0
Cause
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Relief Valve Ind
Yes
Additional Alarm Ind
Yes
Eq Additional Other Ind
Yes
Eq Additional Other Details
Valve Began Blowing Below Set Point.
Preparer Name
D**** C*****
Preparer Title
Compliance Engineer
Preparer Email
D***********@s****.com
Preparer Telephone
2708524391
Authorizer Name
D**** S*******
Authorizer Title
Pipeline Compliance Manager
Authorizer Telephone
2708524424
Authorizer Email
D***************@s****.com
Narrative
On 11/27/2014 at 03:20 ssc gas control began receiving alarms that lasted approximately 15 minutes. During this time the pressures on the "guymon 26in." were observed as decreasing and continued for approximately 40 minutes. Gas control attempted to investigate the potential cause and after no reasoning could be determined, ssc operations were called at 03:50. Ssc operations arrived at the wakita compressor station and confirmed with gas control, at 04:16, the cap on the relief valve was off and it was the expected cause of the drop in pressure. By 11:29 all relief valves between wakita station and the upstream alva station had been confirmed as not blowing. The set-points were tested on the relief and found to work correctly. The station piping was isolated until 12/2 when the relief was rebuilt and tested again.
| Report Received Date | 2014-12-19 00:00:00 |
|---|---|
| Iyear | 2014 |
| Report Number | 20140145 |
| Supplemental Number | 16590 |
| Report Type | Original Final |
| Operator Id | 31711 PHMSA Enforcement |
| Name | Southern Star Central Gas Pipeline, Inc |
| Operator Street Address | 4700 Highway 56; Box 20010 |
| Operator City Name | Owensboro |
| Operator State Abbreviation | KY |
| Operator Postal Code | 42301 |
| Local Datetime | 2014-11-27 03:17:00 |
| Location Latitude | 36.86646759 Google Maps OpenStreetMap |
| Location Longitude | -97.9307755 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1102104 NRC Report How to search |
| Nrc Rpt Datetime | 2014-11-27 05:55:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 3910 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | The Relief Valve Failed At The Wrong Set Point. The Relief Valve Was Shut In. |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2014-11-27 03:20:00 |
| On Site Datetime | 2014-11-27 04:16:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ok |
| Onshore Postal Code | 73771 |
| Onshore City Name | Wakita |
| Onshore County Name | Grant |
| Designated Location | Survey Station No. |
| Designated Name | 150/10321+78 |
| Pipe Fac Name | Wakita Station-Line N |
| Segment Name | Oklahoma Hugoton 26" |
| 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 Compressor Station Equipment And Piping |
| Item Involved | Esd System, But Excluding Product Drain Lines And Tubing |
| Installation Year | 1965 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | The Relief Valve Malfunctioned And Started To Relieve Gas Below The Set Point. |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 236 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 16031 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 2100 |
| Est Cost Emergency | 1300 |
| Est Cost Other | 0 |
| Prpty | 19431 |
| Accident Psig | 542 |
| Mop Psig | 720 |
| 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 |
| Pipeline Function | Transmission System |
| 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 | Yes, specify investigation result(s): (select all that apply) |
| Invest Incorrect Action Ind | Yes |
| Employee Drug Test Ind | Yes |
| Contractor Drug Test Ind | No |
| Num Employees Tested | 1 |
| Num Employees Failed | 0 |
| Cause | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Relief Valve Ind | Yes |
| Additional Alarm Ind | Yes |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Valve Began Blowing Below Set Point. |
| Preparer Name | D**** C***** |
| Preparer Title | Compliance Engineer |
| Preparer Email | D***********@s****.com |
| Preparer Telephone | 2708524391 |
| Authorizer Name | D**** S******* |
| Authorizer Title | Pipeline Compliance Manager |
| Authorizer Telephone | 2708524424 |
| Authorizer Email | D***************@s****.com |
| Narrative | On 11/27/2014 at 03:20 ssc gas control began receiving alarms that lasted approximately 15 minutes. During this time the pressures on the "guymon 26in." were observed as decreasing and continued for approximately 40 minutes. Gas control attempted to investigate the potential cause and after no reasoning could be determined, ssc operations were called at 03:50. Ssc operations arrived at the wakita compressor station and confirmed with gas control, at 04:16, the cap on the relief valve was off and it was the expected cause of the drop in pressure. By 11:29 all relief valves between wakita station and the upstream alva station had been confirmed as not blowing. The set-points were tested on the relief and found to work correctly. The station piping was isolated until 12/2 when the relief was rebuilt and tested again. |
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