Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2020-05-19 — TX
Operator
Anr Pipeline Co
Cause
Equipment Failure
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$400,000
Incident datetime
2020-05-19 12:46
Report number
Location
TX
Narrative
A root cause failure analysis (rcfa) final report, which incorporated the findings from the mechanical and metallurgical testing report summarized the event as, "... A rupture of facility piping on the shell side of the gas-gas heat exchanger (e-2053) leading to the ejection of process piping as well as the release of natural gas to the environment. Causal factors were recognized for the event sequences pertaining to (1) a natural gas leak from the high pressure injection header to lower pressure process piping through isolation valve xv-2070 and xv-2071 and (2) inadequate safety systems in the shell side of the heat exchanger loop to prevent rupture of the lower maop piping." metallurgical lab completed the failure analysis of the fractured piping and concluded that the rupture of the shell side piping was caused by ductile overload from pipe over-pressurization. Causal factors were identified as: leaking isolation valves; inadequate design-no overpressure protection or alarms; no positive isolation of shell side loop. Based on the rcfa, recommendations and potential improvement opportunities identified, corrective actions have been assigned to address each contributing factor.
Detailed record list
Report Received Date
2020-06-19 00:00:00
Iyear
2020
Report Number
20200065
Supplemental Number
34502
Report Type
Supplemental Final
Operator Id
Name
Anr Pipeline Co
Operator Street Address
700 Louisiana Street Suite 700
Operator City Name
Houston
Operator State Abbreviation
TX
Operator Postal Code
77002
Local Datetime
2020-05-19 12:46:00
Time Zone
Eastern
Daylight Savings Ind
No
Location Latitude
44.77025
Location Longitude
-85.07459
Nrc Rpt Num
1277651
Nrc Rpt Datetime
2020-05-19 14:33:00
Additional Nrc Report Numbers
1277764
Commodity Released Type
Natural Gas
Unintentional Release
26.5
Intentional Release
2156
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Status When Identified
Normal Operation, Includes Pauses During Maintenance
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2020-05-19 13:20:00
Still Shutdown Ind
Yes
Communication State Fed Ind
Yes
Party Initiated Communication
Local/state/federal Emergency Responder
Initial Responder Com Datetime
2020-05-19 13:50:00
Ignite Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2020-05-19 12:46:00
On Site Datetime
2020-05-19 13:19:00
On Off Shore
Onshore
Onshore State Abbreviation
Mi
Onshore Postal Code
49646
Onshore City Name
Excelsior Township
Onshore County Name
Kalkaska
Designated Location
Not Applicable
Pipe Fac Name
Excelsior 6 Compressor Station
Segment Name
Anr Storage
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
Interstate
System Part Involved
Onshore Compressor Station Equipment And Piping
Item Involved
Pipe
Pipe Type
Pipe Seam
Pipe Diameter
20
Pipe Wall Thickness
0.375
Pipe Smys
60000
Pipe Specification
Api-5l Pls2 X60
Pipe Seam Type
Longitudinal Erw - High Frequency
Pipe Manufacturer
Salzgitter Mannesmann Line Pipe
Pipe Coating Type
Paint
Coating Applied Ind
Yes
Installation Year
2018
Manufactured Year
2017
Material Involved
Carbon Steel
Release Type
Rupture
Rupture Orient
Circumferential
Rupture Length
62.8
Rupture Width
62.8
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
467
Heat Damage Ind
No
Non Heat Damage Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
46
Est Cost Intentional Release
3751
Est Cost Prop Damage
400000
Est Cost Emergency
0
Est Cost Other
0
Gas Cost In Mcf
1.74
Prpty
403797
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
2961
Gas Flow In Pipe In Mcf
0
Mop Psig
1050
Mop Cfr Section
192.619(A)(1)
Maop Established Date
2018-09-22 00:00:00
Maop Reversal Flow Ind
No
Accident Pressure
Pressure Exceeded The Applicable Allowance In 192.201
Pressure Restriction Ind
No
Gas Required Odorized Ind
No
Pipeline Function
Transmission In Storage Field
Scada In Place Ind
No
Accident Identifier
Notification From Public
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest No Controller Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Malfunction Of Control/relief Equipment
Eq Failure Type
Malfunction Of Control/relief Equipment
Block Valve Ind
Yes
Additional Overpressure Ind
Yes
Preparer Name
R****** P******
Preparer Title
Compliance Specialist
Preparer Email
R**************@t*******.com
Preparer Telephone
248-561-7803
Authorizer Name
L** R*****
Authorizer Title
Director Pipeline Regulator Compliance
Authorizer Telephone
832-320-5315
Authorizer Email
L*********@t*******.com
Narrative
A root cause failure analysis (rcfa) final report, which incorporated the findings from the mechanical and metallurgical testing report summarized the event as, "... A rupture of facility piping on the shell side of the gas-gas heat exchanger (e-2053) leading to the ejection of process piping as well as the release of natural gas to the environment. Causal factors were recognized for the event sequences pertaining to (1) a natural gas leak from the high pressure injection header to lower pressure process piping through isolation valve xv-2070 and xv-2071 and (2) inadequate safety systems in the shell side of the heat exchanger loop to prevent rupture of the lower maop piping." metallurgical lab completed the failure analysis of the fractured piping and concluded that the rupture of the shell side piping was caused by ductile overload from pipe over-pressurization. Causal factors were identified as: leaking isolation valves; inadequate design-no overpressure protection or alarms; no positive isolation of shell side loop. Based on the rcfa, recommendations and potential improvement opportunities identified, corrective actions have been assigned to address each contributing factor.
| Report Received Date | 2020-06-19 00:00:00 |
|---|---|
| Iyear | 2020 |
| Report Number | 20200065 |
| Supplemental Number | 34502 |
| Report Type | Supplemental Final |
| Operator Id | 405 PHMSA Enforcement |
| Name | Anr Pipeline Co |
| Operator Street Address | 700 Louisiana Street Suite 700 |
| Operator City Name | Houston |
| Operator State Abbreviation | TX |
| Operator Postal Code | 77002 |
| Local Datetime | 2020-05-19 12:46:00 |
| Time Zone | Eastern |
| Daylight Savings Ind | No |
| Location Latitude | 44.77025 Google Maps OpenStreetMap |
| Location Longitude | -85.07459 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1277651 NRC Report How to search |
| Nrc Rpt Datetime | 2020-05-19 14:33:00 |
| Additional Nrc Report Numbers | 1277764 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 26.5 |
| Intentional Release | 2156 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Status When Identified | Normal Operation, Includes Pauses During Maintenance |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2020-05-19 13:20:00 |
| Still Shutdown Ind | Yes |
| Communication State Fed Ind | Yes |
| Party Initiated Communication | Local/state/federal Emergency Responder |
| Initial Responder Com Datetime | 2020-05-19 13:50:00 |
| Ignite Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2020-05-19 12:46:00 |
| On Site Datetime | 2020-05-19 13:19:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Mi |
| Onshore Postal Code | 49646 |
| Onshore City Name | Excelsior Township |
| Onshore County Name | Kalkaska |
| Designated Location | Not Applicable |
| Pipe Fac Name | Excelsior 6 Compressor Station |
| Segment Name | Anr Storage |
| 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 | Interstate |
| System Part Involved | Onshore Compressor Station Equipment And Piping |
| Item Involved | Pipe |
| Pipe Type | Pipe Seam |
| Pipe Diameter | 20 |
| Pipe Wall Thickness | 0.375 |
| Pipe Smys | 60000 |
| Pipe Specification | Api-5l Pls2 X60 |
| Pipe Seam Type | Longitudinal Erw - High Frequency |
| Pipe Manufacturer | Salzgitter Mannesmann Line Pipe |
| Pipe Coating Type | Paint |
| Coating Applied Ind | Yes |
| Installation Year | 2018 |
| Manufactured Year | 2017 |
| Material Involved | Carbon Steel |
| Release Type | Rupture |
| Rupture Orient | Circumferential |
| Rupture Length | 62.8 |
| Rupture Width | 62.8 |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 467 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 46 |
| Est Cost Intentional Release | 3751 |
| Est Cost Prop Damage | 400000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Gas Cost In Mcf | 1.74 |
| Prpty | 403797 |
| 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 | 2961 |
| Gas Flow In Pipe In Mcf | 0 |
| Mop Psig | 1050 |
| Mop Cfr Section | 192.619(A)(1) View CFR 49 §192 |
| Maop Established Date | 2018-09-22 00:00:00 |
| Maop Reversal Flow Ind | No |
| Accident Pressure | Pressure Exceeded The Applicable Allowance In 192.201 |
| Pressure Restriction Ind | No |
| Gas Required Odorized Ind | No |
| Pipeline Function | Transmission In Storage Field |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Public |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Malfunction Of Control/relief Equipment |
| Eq Failure Type | Malfunction Of Control/relief Equipment |
| Block Valve Ind | Yes |
| Additional Overpressure Ind | Yes |
| Preparer Name | R****** P****** |
| Preparer Title | Compliance Specialist |
| Preparer Email | R**************@t*******.com |
| Preparer Telephone | 248-561-7803 |
| Authorizer Name | L** R***** |
| Authorizer Title | Director Pipeline Regulator Compliance |
| Authorizer Telephone | 832-320-5315 |
| Authorizer Email | L*********@t*******.com |
| Narrative | A root cause failure analysis (rcfa) final report, which incorporated the findings from the mechanical and metallurgical testing report summarized the event as, "... A rupture of facility piping on the shell side of the gas-gas heat exchanger (e-2053) leading to the ejection of process piping as well as the release of natural gas to the environment. Causal factors were recognized for the event sequences pertaining to (1) a natural gas leak from the high pressure injection header to lower pressure process piping through isolation valve xv-2070 and xv-2071 and (2) inadequate safety systems in the shell side of the heat exchanger loop to prevent rupture of the lower maop piping." metallurgical lab completed the failure analysis of the fractured piping and concluded that the rupture of the shell side piping was caused by ductile overload from pipe over-pressurization. Causal factors were identified as: leaking isolation valves; inadequate design-no overpressure protection or alarms; no positive isolation of shell side loop. Based on the rcfa, recommendations and potential improvement opportunities identified, corrective actions have been assigned to address each contributing factor. |
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