Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2015-07-28 — TX
Operator
Enbridge Energy, Limited Partnership
Cause
Incorrect Operation
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$250
Incident datetime
2015-07-28 16:55
Report number
Location
TX
Narrative
At approximately 4:55 pm on july 28, 2015, a contractor employee performing rounds at the griffith terminal discovered a release from the manifold-side flange of the tank valve 301-v-7921 during a scheduled station outage for various valve stem seal replacements. The initial volume out was estimated to be approximately 21 gallons based on immediate visual assessment. The product remained completely within the area of the tank valves. Plm arrived on site and cleaned up the impacted soil. After additional measurements were taken by the griffith plm, the volume was updated to 39 gallons. Approximately 10 cubic yards of contaminated soil was disposed of at an approved site. The investigation yielded that a contract employee from future environmental was assigned the duty of monitoring pressure on isolated piping sections during the station outage. The contract employee monitored each location every half hour, but failed to open a 2" valve on the manifold headers that would expose the pressure gauges to ambient conditions. The contract employee did not understand that he needed to open the 2" valves below the pressure gauges. The high temperatures during the afternoon caused a thermal pressure buildup in the tank 79 manifold piping which resulted in a failed flanged connection (gasket) between the manifold pipe and the tank valve. The terminal staff suspended the outage work, reversed the lockout/tag out, and relieved pressure at each of the sections of piping that were impacted. Following this action, the remaining stem seal replacement project was rescheduled for a later date and the station returned to service.
Detailed record list
Report Received Date
2015-08-27 00:00:00
Iyear
2015
Report Number
20150308
Supplemental Number
20700
Report Type
Original Final
Operator Id
11169
Name
Enbridge Energy, Limited Partnership
Operator Street Address
915 N Eldridge Parkway, Suite 1100
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77079
Local Datetime
2015-07-28 16:55:00
Location Latitude
41.51769
Location Longitude
-87.44697
Commodity Released Type
Crude Oil
Unintentional Release Bbls
0.95
Recovered Bbls
0.95
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Contractor Working For The Operator
Incident Identified Datetime
2015-07-28 16:55:00
System Part Involved
Onshore Terminal/tank Farm Equipment And Piping
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
Release Took Place During A Scheduled Outage
On Site Datetime
2015-07-28 16:55:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Griffith Terminal
Segment Name
Tank Line 79
Onshore State Abbreviation
In
Onshore Postal Code
46319
Onshore City Name
Griffith
Onshore County Name
Lake
Designated Location
Milepost/valve Station
Designated Name
Griffith Term
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
Interstate
Item Involved
Flange Assembly
Installation Year
2007
Material Involved
Material Other Than Carbon Steel
Material Details
Graphite
Release Type
Other
Release Type Details
Overpressure - Thermal
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
No
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
High Pop Ind
Yes
High Pop Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
45
Est Cost Prop Damage
250
Est Cost Emergency
9903
Est Cost Environmental
573
Est Cost Other
0
Prpty
10771
Accident Psig
375
Mop Psig
285
Accident Pressure
Pressure Exceeded 110% Of 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
No
Scada Conf Ind
No
Cpm In Place Ind
No
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
Control center was no involved during station outage
Employee Drug Test Ind
No
Contractor Drug Test Ind
Yes
Num Contractors Tested
2
Num Contractors Failed
0
Cause
Incorrect Operation
Cause Details
Pipeline Or Equipment Overpressured
Operation Type
Pipeline Or Equipment Overpressured
Related No Proc Ind
Yes
Related Other Ind
Yes
Operation Related Details
Contractor Knowledge, Skill And Abilities
Category Type
Other Maintenance
Operator Qualification Ind
No
Preparer Name
S**** S****
Preparer Title
Compliance Analyst
Preparer Email
S**********@e*******.com
Preparer Telephone
715-395-3620
Preparer Fax
715-394-1564
Prepared Date
2015-08-27 00:00:00
Authorizer Name
R** C*******
Authorizer Telephone
715-395-3619
Authorizer Title
Manager Us Pipeline Compliance
Authorizer Email
R***********@e*******.com
Narrative
At approximately 4:55 pm on july 28, 2015, a contractor employee performing rounds at the griffith terminal discovered a release from the manifold-side flange of the tank valve 301-v-7921 during a scheduled station outage for various valve stem seal replacements. The initial volume out was estimated to be approximately 21 gallons based on immediate visual assessment. The product remained completely within the area of the tank valves. Plm arrived on site and cleaned up the impacted soil. After additional measurements were taken by the griffith plm, the volume was updated to 39 gallons. Approximately 10 cubic yards of contaminated soil was disposed of at an approved site. The investigation yielded that a contract employee from future environmental was assigned the duty of monitoring pressure on isolated piping sections during the station outage. The contract employee monitored each location every half hour, but failed to open a 2" valve on the manifold headers that would expose the pressure gauges to ambient conditions. The contract employee did not understand that he needed to open the 2" valves below the pressure gauges. The high temperatures during the afternoon caused a thermal pressure buildup in the tank 79 manifold piping which resulted in a failed flanged connection (gasket) between the manifold pipe and the tank valve. The terminal staff suspended the outage work, reversed the lockout/tag out, and relieved pressure at each of the sections of piping that were impacted. Following this action, the remaining stem seal replacement project was rescheduled for a later date and the station returned to service.
| Report Received Date | 2015-08-27 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150308 |
| Supplemental Number | 20700 |
| Report Type | Original Final |
| Operator Id | 11169 PHMSA Enforcement |
| Name | Enbridge Energy, Limited Partnership |
| Operator Street Address | 915 N Eldridge Parkway, Suite 1100 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77079 |
| Local Datetime | 2015-07-28 16:55:00 |
| Location Latitude | 41.51769 Google Maps OpenStreetMap |
| Location Longitude | -87.44697 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 0.95 |
| Recovered Bbls | 0.95 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Contractor Working For The Operator |
| Incident Identified Datetime | 2015-07-28 16:55:00 |
| System Part Involved | Onshore Terminal/tank Farm Equipment And Piping |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Release Took Place During A Scheduled Outage |
| On Site Datetime | 2015-07-28 16:55:00 |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Griffith Terminal |
| Segment Name | Tank Line 79 |
| Onshore State Abbreviation | In |
| Onshore Postal Code | 46319 |
| Onshore City Name | Griffith |
| Onshore County Name | Lake |
| Designated Location | Milepost/valve Station |
| Designated Name | Griffith Term |
| 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 | Interstate |
| Item Involved | Flange Assembly |
| Installation Year | 2007 |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Graphite |
| Release Type | Other |
| Release Type Details | Overpressure - Thermal |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | No |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| High Pop Ind | Yes |
| High Pop Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 45 |
| Est Cost Prop Damage | 250 |
| Est Cost Emergency | 9903 |
| Est Cost Environmental | 573 |
| Est Cost Other | 0 |
| Prpty | 10771 |
| Accident Psig | 375 |
| Mop Psig | 285 |
| Accident Pressure | Pressure Exceeded 110% Of 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 | No |
| Scada Conf Ind | No |
| Cpm In Place Ind | No |
| 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 | Control center was no involved during station outage |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | Yes |
| Num Contractors Tested | 2 |
| Num Contractors Failed | 0 |
| Cause | Incorrect Operation |
| Cause Details | Pipeline Or Equipment Overpressured |
| Operation Type | Pipeline Or Equipment Overpressured |
| Related No Proc Ind | Yes |
| Related Other Ind | Yes |
| Operation Related Details | Contractor Knowledge, Skill And Abilities |
| Category Type | Other Maintenance |
| Operator Qualification Ind | No |
| Preparer Name | S**** S**** |
| Preparer Title | Compliance Analyst |
| Preparer Email | S**********@e*******.com |
| Preparer Telephone | 715-395-3620 |
| Preparer Fax | 715-394-1564 |
| Prepared Date | 2015-08-27 00:00:00 |
| Authorizer Name | R** C******* |
| Authorizer Telephone | 715-395-3619 |
| Authorizer Title | Manager Us Pipeline Compliance |
| Authorizer Email | R***********@e*******.com |
| Narrative | At approximately 4:55 pm on july 28, 2015, a contractor employee performing rounds at the griffith terminal discovered a release from the manifold-side flange of the tank valve 301-v-7921 during a scheduled station outage for various valve stem seal replacements. The initial volume out was estimated to be approximately 21 gallons based on immediate visual assessment. The product remained completely within the area of the tank valves. Plm arrived on site and cleaned up the impacted soil. After additional measurements were taken by the griffith plm, the volume was updated to 39 gallons. Approximately 10 cubic yards of contaminated soil was disposed of at an approved site. The investigation yielded that a contract employee from future environmental was assigned the duty of monitoring pressure on isolated piping sections during the station outage. The contract employee monitored each location every half hour, but failed to open a 2" valve on the manifold headers that would expose the pressure gauges to ambient conditions. The contract employee did not understand that he needed to open the 2" valves below the pressure gauges. The high temperatures during the afternoon caused a thermal pressure buildup in the tank 79 manifold piping which resulted in a failed flanged connection (gasket) between the manifold pipe and the tank valve. The terminal staff suspended the outage work, reversed the lockout/tag out, and relieved pressure at each of the sections of piping that were impacted. Following this action, the remaining stem seal replacement project was rescheduled for a later date and the station returned to service. |
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