Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2022-06-08 — TX
Operator
Mobil Pipe Line Company
Cause
Corrosion Failure
Commodity
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2022-06-08 15:25
Report number
Location
TX
Narrative
At 3:15 pm on june 8, 2022, the mont belvieu operation first line supervisor (fls) received a call from oneok stating that there was a release occurring inside of purity station. Fls called operations control center, and they remotely isolated the inlet and outlet of the facility. Fls and technician arrived to site, accessed upwind, and isolated the system closer to the leak source using manual valves. The isolated section of pipe was allowed to bleed off until line pressure reached 0 psig, resulting in a 184.32-pound release of isobutane to atmosphere. Atmospheric corrosion was located on the bottom of piping at interface with pipe support, causing a pinhole leak. To prevent recurrence, operations removed the pipe spool and installed pressure rated blind flanges. As part of its mitigation plan, mobil pipe line will have a qualified corrosion inspector, from outside the operational area, perform a new atmospheric corrosion inspection within the storage area of operation, including pipe supports. Per our atmospheric corrosion program, we will develop a repair plan for anomalies, if any, found during the cold-eyes review. Area management will also purchase handheld mirrors to assist corrosion technicians with inspections in hard to reach areas, including to pipe to support interfaces. In addition, corrosion technician will be requalified with a skills demonstration on perform atmospheric inspections to confirm inspections are meeting our corrosion control program practices.
Detailed record list
Report Received Date
2022-07-07 00:00:00
Iyear
2022
Report Number
20220144
Supplemental Number
37801
Report Type
Supplemental Final
Operator Id
12628
Name
Mobil Pipe Line Company
Operator Street Address
22777 Springwoods Village Parkway E2.2b-Emp
Operator City Name
Spring
Operator State Abbreviation
TX
Operator Postal Code
77389
Local Datetime
2022-06-08 20:06:00
Time Zone
Central
Daylight Savings Ind
Yes
Location Latitude
29.861793
Location Longitude
-94.888812
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid)
Unintentional Release Bbls
0.96
Intentional Release Bbls
0
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Other
Accident Details
Third-Party Was Working In The Area.
Incident Identified Datetime
2022-06-08 15:25:00
System Part Involved
Onshore Pump/meter Station Equipment And Piping
On Off Shore
Onshore
Status When Identified
Normal Operation, Includes Pauses Between Batches And During Maintenance
Shutdown Due Accident Ind
No
Shutdown Explain
Pipeline Was Down, Awaiting Batch Change.
Communication State Fed Ind
No
On Site Datetime
2022-06-08 15:25:00
Confirmed Discovery Datetime
2022-06-08 20:06:00
Nrc Rpt Datetime
2022-06-08 16:47:00
Nrc Rpt Num
1338176
Additional Nrc Report Numbers
1338395
Ignite Ind
No
Num Pub Evacuated
0
Pipe Fac Name
Mont Belvieu Purity Station
Segment Name
Mpl-118 Hull - Mont Belvieu Lpg Purity
Onshore State Abbreviation
Tx
Onshore Postal Code
77580
Onshore City Name
Mont Belvieu
Onshore County Name
Chambers
Designated Location
Survey Station No.
Designated Name
85+45
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
Meter/prover
Installation Year
Unknown
Manufactured Year
Unknown
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
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Est Cost Oper Paid
0
Est Cost Gas Released
68
Est Cost Prop Damage
0
Est Cost Emergency
0
Est Cost Environmental
0
Est Cost Other
1875
Est Cost Other Details
Labor Cost To Remove The Pipe Segment And Install Blind Flanges.
Prpty
1943
Num Persons Hosp Not Ovnght
0
Num Injured Treated By Emt
0
Num Resident Building Affctd
0
Num Business Building Affctd
0
Accident Psig
362
Mop Psig
660
Mop Cfr Section
Subpart E Pressure Test �195.406(A)(3)
Maop Established Date
1976-07-30 00:00:00
Maop Reversal Flow Ind
No
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
No
Scada Conf Ind
Yes
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
No
Cpm Conf Ind
Yes
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
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
Localized Pitting
Atmosphere Corrosion Ind
Yes
Field Exam Basis Ind
Yes
Underground Location
No
Externally Coated
Yes
Prior Damage
Yes
Preparer Name
D**** R* S*****
Preparer Title
Pipeline Safety Advisor
Preparer Email
D*************@e*********.com
Preparer Telephone
832-624-7531
Prepared Date
2022-07-27 00:00:00
Authorizer Name
T****** H* B*****
Authorizer Telephone
832-624-7775
Authorizer Title
Regulatory Compliance Supervisor
Authorizer Email
T***************@e*********.com
Narrative
At 3:15 pm on june 8, 2022, the mont belvieu operation first line supervisor (fls) received a call from oneok stating that there was a release occurring inside of purity station. Fls called operations control center, and they remotely isolated the inlet and outlet of the facility. Fls and technician arrived to site, accessed upwind, and isolated the system closer to the leak source using manual valves. The isolated section of pipe was allowed to bleed off until line pressure reached 0 psig, resulting in a 184.32-pound release of isobutane to atmosphere. Atmospheric corrosion was located on the bottom of piping at interface with pipe support, causing a pinhole leak. To prevent recurrence, operations removed the pipe spool and installed pressure rated blind flanges. As part of its mitigation plan, mobil pipe line will have a qualified corrosion inspector, from outside the operational area, perform a new atmospheric corrosion inspection within the storage area of operation, including pipe supports. Per our atmospheric corrosion program, we will develop a repair plan for anomalies, if any, found during the cold-eyes review. Area management will also purchase handheld mirrors to assist corrosion technicians with inspections in hard to reach areas, including to pipe to support interfaces. In addition, corrosion technician will be requalified with a skills demonstration on perform atmospheric inspections to confirm inspections are meeting our corrosion control program practices.
| Report Received Date | 2022-07-07 00:00:00 |
|---|---|
| Iyear | 2022 |
| Report Number | 20220144 |
| Supplemental Number | 37801 |
| Report Type | Supplemental Final |
| Operator Id | 12628 PHMSA Enforcement |
| Name | Mobil Pipe Line Company |
| Operator Street Address | 22777 Springwoods Village Parkway E2.2b-Emp |
| Operator City Name | Spring |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77389 |
| Local Datetime | 2022-06-08 20:06:00 |
| Time Zone | Central |
| Daylight Savings Ind | Yes |
| Location Latitude | 29.861793 Google Maps OpenStreetMap |
| Location Longitude | -94.888812 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid) |
| Unintentional Release Bbls | 0.96 |
| Intentional Release Bbls | 0 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Other |
| Accident Details | Third-Party Was Working In The Area. |
| Incident Identified Datetime | 2022-06-08 15:25:00 |
| System Part Involved | Onshore Pump/meter Station Equipment And Piping |
| On Off Shore | Onshore |
| Status When Identified | Normal Operation, Includes Pauses Between Batches And During Maintenance |
| Shutdown Due Accident Ind | No |
| Shutdown Explain | Pipeline Was Down, Awaiting Batch Change. |
| Communication State Fed Ind | No |
| On Site Datetime | 2022-06-08 15:25:00 |
| Confirmed Discovery Datetime | 2022-06-08 20:06:00 |
| Nrc Rpt Datetime | 2022-06-08 16:47:00 |
| Nrc Rpt Num | 1338176 NRC Report How to search |
| Additional Nrc Report Numbers | 1338395 |
| Ignite Ind | No |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Mont Belvieu Purity Station |
| Segment Name | Mpl-118 Hull - Mont Belvieu Lpg Purity |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 77580 |
| Onshore City Name | Mont Belvieu |
| Onshore County Name | Chambers |
| Designated Location | Survey Station No. |
| Designated Name | 85+45 |
| 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 | Meter/prover |
| Installation Year | Unknown |
| Manufactured Year | Unknown |
| 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 | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 68 |
| Est Cost Prop Damage | 0 |
| Est Cost Emergency | 0 |
| Est Cost Environmental | 0 |
| Est Cost Other | 1875 |
| Est Cost Other Details | Labor Cost To Remove The Pipe Segment And Install Blind Flanges. |
| Prpty | 1943 |
| Num Persons Hosp Not Ovnght | 0 |
| Num Injured Treated By Emt | 0 |
| Num Resident Building Affctd | 0 |
| Num Business Building Affctd | 0 |
| Accident Psig | 362 |
| Mop Psig | 660 |
| Mop Cfr Section | Subpart E Pressure Test �195.406(A)(3) View CFR 49 §192 |
| Maop Established Date | 1976-07-30 00:00:00 |
| Maop Reversal Flow Ind | No |
| 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 | No |
| Scada Conf Ind | Yes |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | No |
| Cpm Conf Ind | Yes |
| 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 | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | Localized Pitting |
| Atmosphere Corrosion Ind | Yes |
| Field Exam Basis Ind | Yes |
| Underground Location | No |
| Externally Coated | Yes |
| Prior Damage | Yes |
| Preparer Name | D**** R* S***** |
| Preparer Title | Pipeline Safety Advisor |
| Preparer Email | D*************@e*********.com |
| Preparer Telephone | 832-624-7531 |
| Prepared Date | 2022-07-27 00:00:00 |
| Authorizer Name | T****** H* B***** |
| Authorizer Telephone | 832-624-7775 |
| Authorizer Title | Regulatory Compliance Supervisor |
| Authorizer Email | T***************@e*********.com |
| Narrative | At 3:15 pm on june 8, 2022, the mont belvieu operation first line supervisor (fls) received a call from oneok stating that there was a release occurring inside of purity station. Fls called operations control center, and they remotely isolated the inlet and outlet of the facility. Fls and technician arrived to site, accessed upwind, and isolated the system closer to the leak source using manual valves. The isolated section of pipe was allowed to bleed off until line pressure reached 0 psig, resulting in a 184.32-pound release of isobutane to atmosphere. Atmospheric corrosion was located on the bottom of piping at interface with pipe support, causing a pinhole leak. To prevent recurrence, operations removed the pipe spool and installed pressure rated blind flanges. As part of its mitigation plan, mobil pipe line will have a qualified corrosion inspector, from outside the operational area, perform a new atmospheric corrosion inspection within the storage area of operation, including pipe supports. Per our atmospheric corrosion program, we will develop a repair plan for anomalies, if any, found during the cold-eyes review. Area management will also purchase handheld mirrors to assist corrosion technicians with inspections in hard to reach areas, including to pipe to support interfaces. In addition, corrosion technician will be requalified with a skills demonstration on perform atmospheric inspections to confirm inspections are meeting our corrosion control program practices. |
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