Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2014-09-25 — ND
Operator
Dakota Gasification Company
Cause
Equipment Failure
Commodity
Co2 (Carbon Dioxide)
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$500
Incident datetime
2014-09-25 01:05
Report number
Location
ND
Narrative
After general work, the control room for the CO2 pipeline initiated efforts to start pump ga7411. The board operator called for 40% open on flow valve fv74056. During startup, pressures built to 3001 psi without the valve opening. System alarms, shuts down is initiated by the board operator. The sequence is tried again, with the same results. E&I are dispatched to find the cause, which is determined to be a faulty servo driver. During investigation of ga7411, psv 74050 was found with a micro (pin hole) leak emitting from the side body. The psv was isolated and changed with a like psv by maintenance. Subsequent examination found the valve body o-ring on the inspection port wsas bad. The o ring was changed, psv tested and placed in reserve stock. Estimate gas losses: - hydrogen sulfide 10 lbs; carbon dioxide 800 lbs = 72 gallons
Detailed record list
Report Received Date
2015-12-10 00:00:00
Iyear
2014
Report Number
20150451
Supplemental Number
22581
Report Type
Supplemental Final
Operator Id
Name
Dakota Gasification Company
Operator Street Address
1717 East Interstate Avenue
Operator City Name
Bismarck
Operator State Abbreviation
ND
Operator Postal Code
58503-0564
Local Datetime
2014-09-25 01:05:00
Location Latitude
48.3975
Location Longitude
-102.901
Commodity Released Type
Co2 (Carbon Dioxide)
Unintentional Release Bbls
1
Intentional Release Bbls
1
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations)
Incident Identified Datetime
2014-09-25 01:05:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Pressure Reduction; Psv Replaced On Vent Line
On Site Datetime
2014-09-25 07:00:00
Nrc Rpt Datetime
2014-09-25 15:57:00
Nrc Rpt Num
1096486
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Dakota Gasification
Segment Name
Tioga Station
Onshore State Abbreviation
Nd
Onshore Postal Code
58852
Onshore City Name
Tioga
Onshore County Name
Williams
Designated Location
Milepost/valve Station
Designated Name
Valvestation
Federal
No
Location Type
Totally Contained On Operator-Controlled Property
Incident Area Type
Aboveground
Incident Area Subtype
Typical Aboveground Facility Piping Or Appurtenance
Crossing
No
Pipe Facility Type
Intrastate
Item Involved
Valve
Valve Type
Relief Valve
Installation Year
2014
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Wildlife Impact Ind
No
Soil Contamination
No
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
500
Est Cost Prop Damage
500
Est Cost Emergency
1000
Est Cost Environmental
0
Est Cost Other
0
Prpty
2000
Accident Psig
3001
Mop Psig
3100
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
Yes
Scada Conf Ind
Yes
Cpm In Place Ind
No
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Non-Threaded Connection Failure
Eq Failure Type
Non-Threaded Connection Failure
Other Non Threaded Ind
O-Ring
Additional Installation Ind
Yes
Preparer Name
C***** O******
Preparer Title
Pipeline Superintendent
Preparer Email
C******@b***.com
Preparer Telephone
7018736155
Prepared Date
2017-08-21 00:00:00
Authorizer Name
C***** O******
Authorizer Telephone
7018736155
Authorizer Title
Pipeline Superintendent
Authorizer Email
C******@b***.com
Narrative
After general work, the control room for the CO2 pipeline initiated efforts to start pump ga7411. The board operator called for 40% open on flow valve fv74056. During startup, pressures built to 3001 psi without the valve opening. System alarms, shuts down is initiated by the board operator. The sequence is tried again, with the same results. E&I are dispatched to find the cause, which is determined to be a faulty servo driver. During investigation of ga7411, psv 74050 was found with a micro (pin hole) leak emitting from the side body. The psv was isolated and changed with a like psv by maintenance. Subsequent examination found the valve body o-ring on the inspection port wsas bad. The o ring was changed, psv tested and placed in reserve stock. Estimate gas losses: - hydrogen sulfide 10 lbs; carbon dioxide 800 lbs = 72 gallons
| Report Received Date | 2015-12-10 00:00:00 |
|---|---|
| Iyear | 2014 |
| Report Number | 20150451 |
| Supplemental Number | 22581 |
| Report Type | Supplemental Final |
| Operator Id | 515 PHMSA Enforcement |
| Name | Dakota Gasification Company |
| Operator Street Address | 1717 East Interstate Avenue |
| Operator City Name | Bismarck |
| Operator State Abbreviation | ND |
| Operator Postal Code | 58503-0564 |
| Local Datetime | 2014-09-25 01:05:00 |
| Location Latitude | 48.3975 Google Maps OpenStreetMap |
| Location Longitude | -102.901 Google Maps OpenStreetMap |
| Commodity Released Type | Co2 (Carbon Dioxide) |
| Unintentional Release Bbls | 1 |
| Intentional Release Bbls | 1 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Cpm Leak Detection System Or Scada-Based Information (Such As Alarm(S), Alert(S), Event(S), And/or Volume Calculations) |
| Incident Identified Datetime | 2014-09-25 01:05:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Pressure Reduction; Psv Replaced On Vent Line |
| On Site Datetime | 2014-09-25 07:00:00 |
| Nrc Rpt Datetime | 2014-09-25 15:57:00 |
| Nrc Rpt Num | 1096486 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Dakota Gasification |
| Segment Name | Tioga Station |
| Onshore State Abbreviation | Nd |
| Onshore Postal Code | 58852 |
| Onshore City Name | Tioga |
| Onshore County Name | Williams |
| Designated Location | Milepost/valve Station |
| Designated Name | Valvestation |
| Federal | No |
| Location Type | Totally Contained On Operator-Controlled Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Typical Aboveground Facility Piping Or Appurtenance |
| Crossing | No |
| Pipe Facility Type | Intrastate |
| Item Involved | Valve |
| Valve Type | Relief Valve |
| Installation Year | 2014 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Wildlife Impact Ind | No |
| Soil Contamination | No |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 500 |
| Est Cost Prop Damage | 500 |
| Est Cost Emergency | 1000 |
| Est Cost Environmental | 0 |
| Est Cost Other | 0 |
| Prpty | 2000 |
| Accident Psig | 3001 |
| Mop Psig | 3100 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | Yes |
| Scada Conf Ind | Yes |
| Cpm In Place Ind | No |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Non-Threaded Connection Failure |
| Eq Failure Type | Non-Threaded Connection Failure |
| Other Non Threaded Ind | O-Ring |
| Additional Installation Ind | Yes |
| Preparer Name | C***** O****** |
| Preparer Title | Pipeline Superintendent |
| Preparer Email | C******@b***.com |
| Preparer Telephone | 7018736155 |
| Prepared Date | 2017-08-21 00:00:00 |
| Authorizer Name | C***** O****** |
| Authorizer Telephone | 7018736155 |
| Authorizer Title | Pipeline Superintendent |
| Authorizer Email | C******@b***.com |
| Narrative | After general work, the control room for the CO2 pipeline initiated efforts to start pump ga7411. The board operator called for 40% open on flow valve fv74056. During startup, pressures built to 3001 psi without the valve opening. System alarms, shuts down is initiated by the board operator. The sequence is tried again, with the same results. E&I are dispatched to find the cause, which is determined to be a faulty servo driver. During investigation of ga7411, psv 74050 was found with a micro (pin hole) leak emitting from the side body. The psv was isolated and changed with a like psv by maintenance. Subsequent examination found the valve body o-ring on the inspection port wsas bad. The o ring was changed, psv tested and placed in reserve stock. Estimate gas losses: - hydrogen sulfide 10 lbs; carbon dioxide 800 lbs = 72 gallons |
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