Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2016-07-27 — OK
Operator
Medallion Operating Company, Llc
Cause
Incorrect Operation
Commodity
Crude Oil
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$4,000
Incident datetime
2016-07-27 23:00
Report number
Location
OK
Narrative
The incident occurred on july 27, 2016 at enterprise's midland facility, at the flange where medallion's 12' delivery line is connected and isolated with an isolation flange kit. The maximum pressure rating of medallion's pipe and the enterprise meter skid is 1,440 psi. At the time of the incident, there were no deliveries being made, the pipeline was in-service, but not delivering to enterprise. Construction was on-going at the medallion midland junction which is located about a mile away from the enterprise terminal. The midland junction was operating on temporary power and air when a valve closed at the medallion midland junction that forced oil towards the enterprise facility. On july 27, 2016 at approximately 2300 enterprise control room received an alarm and saw the inlet line pressure had reach 758 psi. This exceeded the pressure set by enterprise for delivery of oil to their site. Enterprise employee went to close the inlet valve and discovered a leak at the tie-in flange (the leak was a fine mist spray). The enterprise employee immediately notified a medallion control room operator who opened gathering flow into medallions martin station tank. At 2320 the closed valve was re-opened and pressure was relieved to the main line, which stopped the release of crude oil at the enterprise station. Once the flow was shut down and the release stopped notification was received by medallion's regulatory and compliance manager at 09:00 on july 28, 2016. After the initial response to stop the release, medallion identified the source of the release to be a crack in the isolation flange kit. An investigation determined that the isolation flange kit failed due to improper torque sequence resulting in a spray of oil being discharged on the ground and releasing a total of 1 bbl. Of oil onto the ground, impacting approximately 45 cubic feet of soil. It is estimated that 60% of the oil released, landed on the enterprise meter skid. Medallion crews arrived at 0200 and worked to absorb the crude oil with absorbent pads until 0400. Repairs and clean-up to commence around 1000 the next morning. The facility remained in operation during initial response and clean-up activities. The delivery line was isolated utilizing the medallion block valve just upstream of the meter skid until the isolation flange kit could be replaced. The damaged isolation flange kit was replaced with new, the proper torque sequence was utilized during bolt-up, and the line was put back in service around 1300 on july 28, 2016. Crude oil affected soil was removed from the site and sent for proper disposal. Soil samples taken august 8, 2016 indicated the affected area had been remediated to railroad commission of texas clean-up standards and the site has been released for normal operations.
Detailed record list
Report Received Date
2016-08-23 00:00:00
Iyear
2016
Report Number
20160258
Supplemental Number
21621
Report Type
Original Final
Operator Id
39183
Name
Medallion Operating Company, Llc
Operator Street Address
100 W Fifth Street
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74103
Local Datetime
2016-07-27 23:00:00
Location Latitude
32.01921
Location Longitude
-102.013363
Commodity Released Type
Crude Oil
Unintentional Release Bbls
1
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Other
Accident Details
Enterprise Control Room Operator - Above Normal Pressure Indicated/visual Inspec
Incident Identified Datetime
2016-07-27 23:00:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
No
Shutdown Explain
The Leaking Flange Was Isolated And Normal Flow Continued On The Mainline.
On Site Datetime
2016-07-28 23:20:00
Nrc Rpt Num
Nrc Notification Not Required
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Remotely Controlled
Num Pub Evacuated
0
Pipe Fac Name
Enterprise Delivery Point
Segment Name
Midland 16/mid-1001-10
Onshore State Abbreviation
Tx
Onshore Postal Code
79076
Onshore City Name
Midland
Onshore County Name
Midland
Designated Location
Milepost/valve Station
Designated Name
Station-Entrp
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
Flange Assembly
Installation Year
2016
Material Involved
Material Other Than Carbon Steel
Material Details
Flange Isolation Gasket
Release Type
Leak
Leak Type
Crack
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
No
Est Cost Oper Paid
0
Est Cost Gas Released
40
Est Cost Prop Damage
4000
Est Cost Emergency
1300
Est Cost Environmental
1900
Est Cost Other
0
Prpty
7240
Accident Psig
758
Mop Psig
1440
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
20
Internal Inspection Ind
No
Other Inspection Ind
Yes
Internal Inspection Details
Custody Transfer/non-Piggable
Operation Complications Ind
Yes
Other Complications Ind
Yes
Inspect Comp Details
Custody Transfer/non-Piggable
Pipeline Function
< 20% Smys Regulated Transmission
Scada In Place 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
After inspection it was determined the flange was not tightened according to specifications and the operator was not at fault.
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Incorrect Operation
Cause Details
Equipment Not Installed Properly
Operation Type
Equipment Not Installed Properly
Related Failure Follow Ind
Yes
Category Type
Construction
Operator Qualification Ind
No
Preparer Name
T*** B*****
Preparer Title
Regulatory - Compliance Manager
Preparer Email
T******@m*****************.com
Preparer Telephone
4692626060
Prepared Date
2016-08-22 00:00:00
Authorizer Name
T*** B*****
Authorizer Telephone
4692626060
Authorizer Title
Regulatory - Compliance Manager
Authorizer Email
T******@m*****************.com
Narrative
The incident occurred on july 27, 2016 at enterprise's midland facility, at the flange where medallion's 12' delivery line is connected and isolated with an isolation flange kit. The maximum pressure rating of medallion's pipe and the enterprise meter skid is 1,440 psi. At the time of the incident, there were no deliveries being made, the pipeline was in-service, but not delivering to enterprise. Construction was on-going at the medallion midland junction which is located about a mile away from the enterprise terminal. The midland junction was operating on temporary power and air when a valve closed at the medallion midland junction that forced oil towards the enterprise facility. On july 27, 2016 at approximately 2300 enterprise control room received an alarm and saw the inlet line pressure had reach 758 psi. This exceeded the pressure set by enterprise for delivery of oil to their site. Enterprise employee went to close the inlet valve and discovered a leak at the tie-in flange (the leak was a fine mist spray). The enterprise employee immediately notified a medallion control room operator who opened gathering flow into medallions martin station tank. At 2320 the closed valve was re-opened and pressure was relieved to the main line, which stopped the release of crude oil at the enterprise station. Once the flow was shut down and the release stopped notification was received by medallion's regulatory and compliance manager at 09:00 on july 28, 2016. After the initial response to stop the release, medallion identified the source of the release to be a crack in the isolation flange kit. An investigation determined that the isolation flange kit failed due to improper torque sequence resulting in a spray of oil being discharged on the ground and releasing a total of 1 bbl. Of oil onto the ground, impacting approximately 45 cubic feet of soil. It is estimated that 60% of the oil released, landed on the enterprise meter skid. Medallion crews arrived at 0200 and worked to absorb the crude oil with absorbent pads until 0400. Repairs and clean-up to commence around 1000 the next morning. The facility remained in operation during initial response and clean-up activities. The delivery line was isolated utilizing the medallion block valve just upstream of the meter skid until the isolation flange kit could be replaced. The damaged isolation flange kit was replaced with new, the proper torque sequence was utilized during bolt-up, and the line was put back in service around 1300 on july 28, 2016. Crude oil affected soil was removed from the site and sent for proper disposal. Soil samples taken august 8, 2016 indicated the affected area had been remediated to railroad commission of texas clean-up standards and the site has been released for normal operations.
| Report Received Date | 2016-08-23 00:00:00 |
|---|---|
| Iyear | 2016 |
| Report Number | 20160258 |
| Supplemental Number | 21621 |
| Report Type | Original Final |
| Operator Id | 39183 PHMSA Enforcement |
| Name | Medallion Operating Company, Llc |
| Operator Street Address | 100 W Fifth Street |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74103 |
| Local Datetime | 2016-07-27 23:00:00 |
| Location Latitude | 32.01921 Google Maps OpenStreetMap |
| Location Longitude | -102.013363 Google Maps OpenStreetMap |
| Commodity Released Type | Crude Oil |
| Unintentional Release Bbls | 1 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Other |
| Accident Details | Enterprise Control Room Operator - Above Normal Pressure Indicated/visual Inspec |
| Incident Identified Datetime | 2016-07-27 23:00:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | The Leaking Flange Was Isolated And Normal Flow Continued On The Mainline. |
| On Site Datetime | 2016-07-28 23:20:00 |
| Nrc Rpt Num | Nrc Notification Not Required NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Remotely Controlled |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Enterprise Delivery Point |
| Segment Name | Midland 16/mid-1001-10 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 79076 |
| Onshore City Name | Midland |
| Onshore County Name | Midland |
| Designated Location | Milepost/valve Station |
| Designated Name | Station-Entrp |
| 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 | Flange Assembly |
| Installation Year | 2016 |
| Material Involved | Material Other Than Carbon Steel |
| Material Details | Flange Isolation Gasket |
| Release Type | Leak |
| Leak Type | Crack |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 40 |
| Est Cost Prop Damage | 4000 |
| Est Cost Emergency | 1300 |
| Est Cost Environmental | 1900 |
| Est Cost Other | 0 |
| Prpty | 7240 |
| Accident Psig | 758 |
| Mop Psig | 1440 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 20 |
| Internal Inspection Ind | No |
| Other Inspection Ind | Yes |
| Internal Inspection Details | Custody Transfer/non-Piggable |
| Operation Complications Ind | Yes |
| Other Complications Ind | Yes |
| Inspect Comp Details | Custody Transfer/non-Piggable |
| Pipeline Function | < 20% Smys Regulated Transmission |
| Scada In Place 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 | After inspection it was determined the flange was not tightened according to specifications and the operator was not at fault. |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Incorrect Operation |
| Cause Details | Equipment Not Installed Properly |
| Operation Type | Equipment Not Installed Properly |
| Related Failure Follow Ind | Yes |
| Category Type | Construction |
| Operator Qualification Ind | No |
| Preparer Name | T*** B***** |
| Preparer Title | Regulatory - Compliance Manager |
| Preparer Email | T******@m*****************.com |
| Preparer Telephone | 4692626060 |
| Prepared Date | 2016-08-22 00:00:00 |
| Authorizer Name | T*** B***** |
| Authorizer Telephone | 4692626060 |
| Authorizer Title | Regulatory - Compliance Manager |
| Authorizer Email | T******@m*****************.com |
| Narrative | The incident occurred on july 27, 2016 at enterprise's midland facility, at the flange where medallion's 12' delivery line is connected and isolated with an isolation flange kit. The maximum pressure rating of medallion's pipe and the enterprise meter skid is 1,440 psi. At the time of the incident, there were no deliveries being made, the pipeline was in-service, but not delivering to enterprise. Construction was on-going at the medallion midland junction which is located about a mile away from the enterprise terminal. The midland junction was operating on temporary power and air when a valve closed at the medallion midland junction that forced oil towards the enterprise facility. On july 27, 2016 at approximately 2300 enterprise control room received an alarm and saw the inlet line pressure had reach 758 psi. This exceeded the pressure set by enterprise for delivery of oil to their site. Enterprise employee went to close the inlet valve and discovered a leak at the tie-in flange (the leak was a fine mist spray). The enterprise employee immediately notified a medallion control room operator who opened gathering flow into medallions martin station tank. At 2320 the closed valve was re-opened and pressure was relieved to the main line, which stopped the release of crude oil at the enterprise station. Once the flow was shut down and the release stopped notification was received by medallion's regulatory and compliance manager at 09:00 on july 28, 2016. After the initial response to stop the release, medallion identified the source of the release to be a crack in the isolation flange kit. An investigation determined that the isolation flange kit failed due to improper torque sequence resulting in a spray of oil being discharged on the ground and releasing a total of 1 bbl. Of oil onto the ground, impacting approximately 45 cubic feet of soil. It is estimated that 60% of the oil released, landed on the enterprise meter skid. Medallion crews arrived at 0200 and worked to absorb the crude oil with absorbent pads until 0400. Repairs and clean-up to commence around 1000 the next morning. The facility remained in operation during initial response and clean-up activities. The delivery line was isolated utilizing the medallion block valve just upstream of the meter skid until the isolation flange kit could be replaced. The damaged isolation flange kit was replaced with new, the proper torque sequence was utilized during bolt-up, and the line was put back in service around 1300 on july 28, 2016. Crude oil affected soil was removed from the site and sent for proper disposal. Soil samples taken august 8, 2016 indicated the affected area had been remediated to railroad commission of texas clean-up standards and the site has been released for normal operations. |
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