Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2018-09-22 — NE
Operator
Northern Natural Gas Co
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$100
Incident datetime
2018-09-22 01:30
Report number
Location
NE
Narrative
On 9/22/2018, at approximately 1:30am, a plc failed on unit #4 at the belleville compressor station resulting in a gas release. The facility was secured at ~4:30am. The estimated gas loss was 3,489 mcf. The initial calculation had an error and it was thought to be under the reporting limit. Upon further review when it was realized that the reporting threshold was exceeded, an urgent occ call was initiated at 10:55am with members from the platteville team, facility planning, and pipeline safety departments. Update: on 12/07/2018 the nrc report number was corrected to show the original in place of the 48-hour update.
Detailed record list
Report Received Date
2018-10-11 00:00:00
Iyear
2018
Report Number
20180102
Supplemental Number
31292
Report Type
Supplemental Final
Operator Id
13750
Name
Northern Natural Gas Co
Operator Street Address
1111 South 103rd Street
Operator City Name
Omaha
Operator State Abbreviation
NE
Operator Postal Code
68124
Local Datetime
2018-09-22 01:30:00
Location Latitude
42.686499
Location Longitude
-89.640977
Nrc Rpt Num
1225389
Nrc Rpt Datetime
2018-09-22 11:05:00
Commodity Released Type
Natural Gas
Unintentional Release
3489
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2018-09-22 01:30:00
Restart Datetime
2018-09-22 04:30:00
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2018-09-22 01:30:00
On Site Datetime
2018-09-22 04:30:00
On Off Shore
Onshore
Onshore State Abbreviation
Wi
Onshore Postal Code
53818
Onshore City Name
Not Within A Municipality
Onshore County Name
Green
Designated Location
Survey Station No.
Designated Name
Wi-001
Pipe Fac Name
Belleville Compressor Station
Segment Name
Wi-001
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
Instrumentation
Installation Year
1996
Material Involved
Material Other Than Carbon Steel Or Plastic
Material Details
Aluminum
Release Type
Other
Release Type Details
A Plc On Unit #4 At The Station Failed Resulting In A Gas Release.
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
427
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
8897
Est Cost Intentional Release
0
Est Cost Prop Damage
100
Est Cost Emergency
500
Est Cost Other
0
Prpty
9497
Accident Psig
910
Mop Psig
960
Mop Cfr Section
192.619(A)(2)
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
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
Controllers detected the shut down immediately and notified field operations.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Communications Ind
Yes
Eq Additional Other Ind
Yes
Eq Additional Other Details
Age Of Equipment And Long Use
Preparer Name
J*** A* G******
Preparer Title
Sr Corrosion Specialist - Pipeline Safety
Preparer Email
J***********@n****.com
Preparer Telephone
4023987494
Preparer Fax
4025485267
Authorizer Name
T***** C******
Authorizer Title
Vp Pipeline Safety And Risk
Authorizer Telephone
4023987715
Authorizer Email
T*************@n****.com
Narrative
On 9/22/2018, at approximately 1:30am, a plc failed on unit #4 at the belleville compressor station resulting in a gas release. The facility was secured at ~4:30am. The estimated gas loss was 3,489 mcf. The initial calculation had an error and it was thought to be under the reporting limit. Upon further review when it was realized that the reporting threshold was exceeded, an urgent occ call was initiated at 10:55am with members from the platteville team, facility planning, and pipeline safety departments. Update: on 12/07/2018 the nrc report number was corrected to show the original in place of the 48-hour update.
| Report Received Date | 2018-10-11 00:00:00 |
|---|---|
| Iyear | 2018 |
| Report Number | 20180102 |
| Supplemental Number | 31292 |
| Report Type | Supplemental Final |
| Operator Id | 13750 PHMSA Enforcement |
| Name | Northern Natural Gas Co |
| Operator Street Address | 1111 South 103rd Street |
| Operator City Name | Omaha |
| Operator State Abbreviation | NE |
| Operator Postal Code | 68124 |
| Local Datetime | 2018-09-22 01:30:00 |
| Location Latitude | 42.686499 Google Maps OpenStreetMap |
| Location Longitude | -89.640977 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1225389 NRC Report How to search |
| Nrc Rpt Datetime | 2018-09-22 11:05:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 3489 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2018-09-22 01:30:00 |
| Restart Datetime | 2018-09-22 04:30:00 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2018-09-22 01:30:00 |
| On Site Datetime | 2018-09-22 04:30:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Wi |
| Onshore Postal Code | 53818 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Green |
| Designated Location | Survey Station No. |
| Designated Name | Wi-001 |
| Pipe Fac Name | Belleville Compressor Station |
| Segment Name | Wi-001 |
| 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 | Instrumentation |
| Installation Year | 1996 |
| Material Involved | Material Other Than Carbon Steel Or Plastic |
| Material Details | Aluminum |
| Release Type | Other |
| Release Type Details | A Plc On Unit #4 At The Station Failed Resulting In A Gas Release. |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 427 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 8897 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 100 |
| Est Cost Emergency | 500 |
| Est Cost Other | 0 |
| Prpty | 9497 |
| Accident Psig | 910 |
| Mop Psig | 960 |
| Mop Cfr Section | 192.619(A)(2) 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 | 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 | Controllers detected the shut down immediately and notified field operations. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Communications Ind | Yes |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Age Of Equipment And Long Use |
| Preparer Name | J*** A* G****** |
| Preparer Title | Sr Corrosion Specialist - Pipeline Safety |
| Preparer Email | J***********@n****.com |
| Preparer Telephone | 4023987494 |
| Preparer Fax | 4025485267 |
| Authorizer Name | T***** C****** |
| Authorizer Title | Vp Pipeline Safety And Risk |
| Authorizer Telephone | 4023987715 |
| Authorizer Email | T*************@n****.com |
| Narrative | On 9/22/2018, at approximately 1:30am, a plc failed on unit #4 at the belleville compressor station resulting in a gas release. The facility was secured at ~4:30am. The estimated gas loss was 3,489 mcf. The initial calculation had an error and it was thought to be under the reporting limit. Upon further review when it was realized that the reporting threshold was exceeded, an urgent occ call was initiated at 10:55am with members from the platteville team, facility planning, and pipeline safety departments. Update: on 12/07/2018 the nrc report number was corrected to show the original in place of the 48-hour update. |
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