Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2020-11-23 — IA
Operator
Black Hills Energy
Cause
Incorrect Operation
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2020-11-23 00:36
Report number
Location
IA
Narrative
On november 22 the spring valley compressor station was purged, packed and made ready to be put online. The station was on standby with no compression running. On november 23, 2020 0036 ' three high priority alarms were received by controller 0059 ' controller acknowledged all three alarms did not notify field operations. 11:35am- field operations personnel visited the site to clean up from weekend work and discovered blowing gas out of the blow-down silencer. Secured the site and evaluated the situation on station hmi. 11:39am- reset esd system shutting in the venting gas. It was found that a malfunction of a fire eye detection device caused an emergency shutdown (esd). There were station purge lines left in the open position after charging the station which caused a bypass of esd block valves resulting in the blowing gas.
Detailed record list
Report Received Date
2020-12-18 00:00:00
Iyear
2020
Report Number
20200131
Supplemental Number
34793
Report Type
Supplemental Final
Operator Id
15359
Name
Black Hills Energy
Operator Street Address
2287 College Road Po Box 2006
Operator City Name
Council Bluffs
Operator State Abbreviation
IA
Operator Postal Code
51502
Local Datetime
2020-12-09 10:53:00
Time Zone
Mountain
Daylight Savings Ind
Yes
Location Latitude
39.4804694
Location Longitude
-107.2045072
Nrc Rpt Num
1293896
Nrc Rpt Datetime
2020-12-09 10:53:00
Additional Nrc Report Numbers
1294036
Commodity Released Type
Natural Gas
Unintentional Release
37162
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Idle
Communication State Fed Ind
No
Ignite Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2020-11-23 00:36:00
On Site Datetime
2020-11-23 11:35:00
On Off Shore
Onshore
Onshore State Abbreviation
Co
Onshore Postal Code
81601
Onshore City Name
Not Within A Municipality
Onshore County Name
Garfield
Designated Location
Survey Station No.
Designated Name
Spring Valley
Pipe Fac Name
Spring Valley Compressor Station
Segment Name
Spring Valley Compressor Station
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
Intrastate
System Part Involved
Onshore Compressor Station Equipment And Piping
Item Involved
Esd System, But Excluding Product Drain Lines And Tubing
Installation Year
2014
Manufactured Year
2014
Material Involved
Carbon Steel
Release Type
Other
Release Type Details
Purging Valve Left Out Of Position
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
300
Heat Damage Ind
No
Non Heat Damage Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
80567
Est Cost Intentional Release
0
Est Cost Prop Damage
0
Est Cost Emergency
0
Est Cost Other
0
Gas Cost In Mcf
2.168
Prpty
80567
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Wildlife Impact Ind
No
Accident Psig
833
Gas Flow In Pipe In Mcf
0
Mop Psig
1200
Mop Cfr Section
192.619(A)(3)
Maop Established Date
2014-08-31 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Gas Required Odorized 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
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 Schedule Ind
Yes
Invest No Control Room Ind
Yes
Invest Incorrect Action Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Valve Left Or Placed In Wrong Position, But Not Resulting In An Overpressure
Operation Type
Valve Left Or Placed In Wrong Position, But Not Resulting In An Overpressure
Related Inadequate Proc Ind
Yes
Category Type
Normal Operating Conditions
Operator Qualification Ind
Yes
Qualified Individuals
Yes, They Were Qualified For The Task(S)
Preparer Name
S***** D*******
Preparer Title
Compliance Coordinator
Preparer Email
S**************@b***************.com
Preparer Telephone
719 359-0586
Local Contact Name
T***** W*****
Local Contact Email
T************@b***************.com
Local Contact Telephone
970 406-1467
Authorizer Name
S***** D*******
Authorizer Title
Compliance Coordinator
Authorizer Telephone
719 359-0586
Authorizer Email
S**************@b***************.com
Narrative
On november 22 the spring valley compressor station was purged, packed and made ready to be put online. The station was on standby with no compression running. On november 23, 2020 0036 ' three high priority alarms were received by controller 0059 ' controller acknowledged all three alarms did not notify field operations. 11:35am- field operations personnel visited the site to clean up from weekend work and discovered blowing gas out of the blow-down silencer. Secured the site and evaluated the situation on station hmi. 11:39am- reset esd system shutting in the venting gas. It was found that a malfunction of a fire eye detection device caused an emergency shutdown (esd). There were station purge lines left in the open position after charging the station which caused a bypass of esd block valves resulting in the blowing gas.
| Report Received Date | 2020-12-18 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200131 |
| Supplemental Number | 34793 |
| Report Type | Supplemental Final |
| Operator Id | 15359 PHMSA Enforcement |
| Name | Black Hills Energy |
| Operator Street Address | 2287 College Road Po Box 2006 |
| Operator City Name | Council Bluffs |
| Operator State Abbreviation | IA |
| Operator Postal Code | 51502 |
| Local Datetime | 2020-12-09 10:53:00 |
| Time Zone | Mountain |
| Daylight Savings Ind | Yes |
| Location Latitude | 39.4804694 Google Maps OpenStreetMap |
| Location Longitude | -107.2045072 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1293896 NRC Report How to search |
| Nrc Rpt Datetime | 2020-12-09 10:53:00 |
| Additional Nrc Report Numbers | 1294036 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 37162 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Status When Identified | Idle |
| Communication State Fed Ind | No |
| Ignite Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2020-11-23 00:36:00 |
| On Site Datetime | 2020-11-23 11:35:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Co |
| Onshore Postal Code | 81601 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Garfield |
| Designated Location | Survey Station No. |
| Designated Name | Spring Valley |
| Pipe Fac Name | Spring Valley Compressor Station |
| Segment Name | Spring Valley Compressor Station |
| 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 | Intrastate |
| System Part Involved | Onshore Compressor Station Equipment And Piping |
| Item Involved | Esd System, But Excluding Product Drain Lines And Tubing |
| Installation Year | 2014 |
| Manufactured Year | 2014 |
| Material Involved | Carbon Steel |
| Release Type | Other |
| Release Type Details | Purging Valve Left Out Of Position |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 300 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 80567 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 2.168 |
| Prpty | 80567 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Wildlife Impact Ind | No |
| Accident Psig | 833 |
| Gas Flow In Pipe In Mcf | 0 |
| Mop Psig | 1200 |
| Mop Cfr Section | 192.619(A)(3) View CFR 49 §192 |
| Maop Established Date | 2014-08-31 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Gas Required Odorized 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 | 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 Schedule Ind | Yes |
| Invest No Control Room Ind | Yes |
| Invest Incorrect Action Ind | Yes |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Incorrect Operation |
| Cause Details | Valve Left Or Placed In Wrong Position, But Not Resulting In An Overpressure |
| Operation Type | Valve Left Or Placed In Wrong Position, But Not Resulting In An Overpressure |
| Related Inadequate Proc Ind | Yes |
| Category Type | Normal Operating Conditions |
| Operator Qualification Ind | Yes |
| Qualified Individuals | Yes, They Were Qualified For The Task(S) |
| Preparer Name | S***** D******* |
| Preparer Title | Compliance Coordinator |
| Preparer Email | S**************@b***************.com |
| Preparer Telephone | 719 359-0586 |
| Local Contact Name | T***** W***** |
| Local Contact Email | T************@b***************.com |
| Local Contact Telephone | 970 406-1467 |
| Authorizer Name | S***** D******* |
| Authorizer Title | Compliance Coordinator |
| Authorizer Telephone | 719 359-0586 |
| Authorizer Email | S**************@b***************.com |
| Narrative | On november 22 the spring valley compressor station was purged, packed and made ready to be put online. The station was on standby with no compression running. On november 23, 2020 0036 ' three high priority alarms were received by controller 0059 ' controller acknowledged all three alarms did not notify field operations. 11:35am- field operations personnel visited the site to clean up from weekend work and discovered blowing gas out of the blow-down silencer. Secured the site and evaluated the situation on station hmi. 11:39am- reset esd system shutting in the venting gas. It was found that a malfunction of a fire eye detection device caused an emergency shutdown (esd). There were station purge lines left in the open position after charging the station which caused a bypass of esd block valves resulting in the blowing gas. |
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