Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2016-11-28 — TX
Operator
Southern Natural Gas Co
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$6,000
Incident datetime
2016-11-28 06:35
Report number
Location
TX
Narrative
Kinder morgan southern natural gas (sng) company gas control personnel received a unit malfunction alarm for hall gate compressor station (baldwin county, ga) on november 28, 2016. Upon arrival at the station by local sng operations employee, it was determined that gas was blowing through the suction valve of unit no. 3, releasing safely through the unit vent valve and out the station's blowdown piping. Employee isolated the source and stopped the natural gas release. Investigation resulted in the probable cause being failure of the seat for the pilot in a solenoid that caused unit no. 3 suction valve to open, releasing gas. A contributing factor to the solenoid seat failure is likely debris that got into the system. Very small particles, less than 25 microns, can get through the filter and cause failure/leakage.
Detailed record list
Report Received Date
2016-12-14 00:00:00
Iyear
2016
Report Number
20160095
Supplemental Number
17257
Report Type
Supplemental Final
Operator Id
18516
Name
Southern Natural Gas Co
Operator Street Address
1001 Louisiana St, Ste 1000 Suite 1000
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2016-11-28 06:35:00
Location Latitude
33.06136
Location Longitude
-83.05487
Nrc Rpt Num
1165037
Nrc Rpt Datetime
2016-11-28 09:35:00
Commodity Released Type
Natural Gas
Unintentional Release
41058
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Shutdown Explain
Release Of Gas Was Able To Be Isolated Without Facility Shutdown.
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2016-11-28 06:35:00
On Site Datetime
2016-11-28 06:35:00
On Off Shore
Onshore
Onshore State Abbreviation
Ga
Onshore Postal Code
31061
Onshore City Name
Milledgeville
Onshore County Name
Baldwin
Designated Location
Milepost
Designated Name
420.2
Pipe Fac Name
Hall Gate Compressor Station
Segment Name
Unit No. 3
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
Other
Item Involved Details
Solenoid For Suction Valve
Installation Year
2004
Material Involved
Material Other Than Carbon Steel Or Plastic
Material Details
Seat For Pilot In Solenoid Was Bad.
Release Type
Other
Release Type Details
Gas Release Due To Solenoid Failure
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
382
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
89917
Est Cost Intentional Release
0
Est Cost Prop Damage
6000
Est Cost Emergency
0
Est Cost Other
0
Prpty
95917
Accident Psig
892
Mop Psig
1200
Mop Cfr Section
192.619(A)(1)
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
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
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
Gas control personnel had taken no recent action relative to this station's operation. Moreover, pressures remained within normal operational limits.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Eq Failure Details
Seat For The Pilot In A Solenoid Was Bad.
Eq Additional Other Ind
Yes
Eq Additional Other Details
Solenoid Seat Failure Likely Due To Debris Getting Through The Filter.
Preparer Name
K****** P*****
Preparer Title
Sr Engineer
Preparer Email
K*********@k***********.com
Preparer Telephone
2053257554
Preparer Fax
2053253508
Authorizer Name
R*** G*****
Authorizer Title
Director Codes Standards
Authorizer Telephone
7134205433
Authorizer Email
R**********@k***********.com
Narrative
Kinder morgan southern natural gas (sng) company gas control personnel received a unit malfunction alarm for hall gate compressor station (baldwin county, ga) on november 28, 2016. Upon arrival at the station by local sng operations employee, it was determined that gas was blowing through the suction valve of unit no. 3, releasing safely through the unit vent valve and out the station's blowdown piping. Employee isolated the source and stopped the natural gas release. Investigation resulted in the probable cause being failure of the seat for the pilot in a solenoid that caused unit no. 3 suction valve to open, releasing gas. A contributing factor to the solenoid seat failure is likely debris that got into the system. Very small particles, less than 25 microns, can get through the filter and cause failure/leakage.
| Report Received Date | 2016-12-14 00:00:00 |
|---|---|
| Iyear | 2016 |
| Report Number | 20160095 |
| Supplemental Number | 17257 |
| Report Type | Supplemental Final |
| Operator Id | 18516 PHMSA Enforcement |
| Name | Southern Natural Gas Co |
| Operator Street Address | 1001 Louisiana St, Ste 1000 Suite 1000 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2016-11-28 06:35:00 |
| Location Latitude | 33.06136 Google Maps OpenStreetMap |
| Location Longitude | -83.05487 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1165037 NRC Report How to search |
| Nrc Rpt Datetime | 2016-11-28 09:35:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 41058 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Release Of Gas Was Able To Be Isolated Without Facility Shutdown. |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2016-11-28 06:35:00 |
| On Site Datetime | 2016-11-28 06:35:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ga |
| Onshore Postal Code | 31061 |
| Onshore City Name | Milledgeville |
| Onshore County Name | Baldwin |
| Designated Location | Milepost |
| Designated Name | 420.2 |
| Pipe Fac Name | Hall Gate Compressor Station |
| Segment Name | Unit No. 3 |
| 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 | Other |
| Item Involved Details | Solenoid For Suction Valve |
| Installation Year | 2004 |
| Material Involved | Material Other Than Carbon Steel Or Plastic |
| Material Details | Seat For Pilot In Solenoid Was Bad. |
| Release Type | Other |
| Release Type Details | Gas Release Due To Solenoid Failure |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 382 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 89917 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 6000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Prpty | 95917 |
| Accident Psig | 892 |
| Mop Psig | 1200 |
| Mop Cfr Section | 192.619(A)(1) 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 | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | 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 | Gas control personnel had taken no recent action relative to this station's operation. Moreover, pressures remained within normal operational limits. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Eq Failure Details | Seat For The Pilot In A Solenoid Was Bad. |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Solenoid Seat Failure Likely Due To Debris Getting Through The Filter. |
| Preparer Name | K****** P***** |
| Preparer Title | Sr Engineer |
| Preparer Email | K*********@k***********.com |
| Preparer Telephone | 2053257554 |
| Preparer Fax | 2053253508 |
| Authorizer Name | R*** G***** |
| Authorizer Title | Director Codes Standards |
| Authorizer Telephone | 7134205433 |
| Authorizer Email | R**********@k***********.com |
| Narrative | Kinder morgan southern natural gas (sng) company gas control personnel received a unit malfunction alarm for hall gate compressor station (baldwin county, ga) on november 28, 2016. Upon arrival at the station by local sng operations employee, it was determined that gas was blowing through the suction valve of unit no. 3, releasing safely through the unit vent valve and out the station's blowdown piping. Employee isolated the source and stopped the natural gas release. Investigation resulted in the probable cause being failure of the seat for the pilot in a solenoid that caused unit no. 3 suction valve to open, releasing gas. A contributing factor to the solenoid seat failure is likely debris that got into the system. Very small particles, less than 25 microns, can get through the filter and cause failure/leakage. |
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