Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2016-02-24 — MO
Operator
Laclede Gas Co
Cause
Pipe, Weld, Or Joint Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$114,000
Incident datetime
2016-02-24 08:20
Report number
Location
MO, SAINT LOUIS
Narrative
After completing a leak investigation from a customer reported call of a slight inside odor, it was determined a nearby 24 inch cast iron main was leaking. Excavation crews had difficulty reaching the main due its depth of 84 inches along with the concrete and brick found below the pipe. Two longitudinal cracks totaling 32 inches in length were found on the bottom section of the pipe. Installation of a stainless steel clamp was attempted to repair the leak; however it was unsuccessful. The incident was deemed to be reportable on february 27, 2016, when it was determined that the repair costs would probably exceed $50,000. The company ordered a 44 inch long steel, split sleeve encapsulation fitting as an alternate repair. The encapsulation fitting required additional excavation of the pipe which uncovered a third crack 16 inches long. The encapsulation fitting was successfully installed around the original two cracks. The third crack was soap taped as a temporary repair. Service technicians remained onsite to monitor the leak while the repairs were made. It is unclear if the pipe was constructed resting on concrete and brick or if subsidence over the past 113 years moved the pipe to its current position. The company is also unable to determine if outside forces from the traffic above the pipe was a contributing factor to the failure. The uncertainty of the root cause of failure has prompted the company to accelerate its plans for full replacement of this pipe segment and adjoining main. The company has proposed replacing or abandoning approximately 2,800 feet of the 24 inch cast iron main involved and approximately 900 feet of 12 inch cast iron main.
Detailed record list
Occurred At
2016-02-24 08:20:00
Year
2016
Report Received Date
2016-03-25 00:00:00
Iyear
2016.0
Report Number
20160029.0
Supplemental Number
16338.0
Report Type
Supplemental Final
Operator Id
11032
Name
Laclede Gas Co
Operator Street Address
700 Market Street
Operator City Name
Saint Louis
Operator State Abbreviation
MO
Operator Postal Code
63101
Local Datetime
2016-02-24 07:52:00
Location Street Address
1010 Saint Charles St
Location City Name
Saint Louis
Location County Name
Saint Louis
Location State Abbreviation
MO
Location Postal Code
63101
Location Latitude
38.629945
Location Longitude
-90.194248
Nrc Rpt Datetime
2016-02-27 09:45:00
Nrc Rpt Num
1141503
Commodity Released Type
Natural Gas
Unintentional Release
1420.0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2016-02-24 08:20:00
On Site Datetime
2016-02-24 08:43:00
Federal
No
Location Type
Utility Right-Of-Way / Easement
Incident Area Type
Underground
Incident Area Subtype
Under Pavement
Depth Of Cover
84.0
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Main
Installation Year
1903.0
Pipe Diameter
24.0
Pipe Specification
Unknown
Pipe Manufacturer
Unknown
Material Involved
Cast/wrought Iron
Release Type
Leak
Leak Type
Crack
Class Location Type
Class 4 Location
Est Cost Oper Paid
0.0
Est Cost Prop Damage
114000.0
Est Cost Emergency
500.0
Est Cost Other
0.0
Est Cost Unintentional Release
6093.0
Prpty
120593.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
12.0
Normal Psig
12.0
Mop Psig
25.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Accident Identifier
Notification From Public
Investigation Status
Yes, specify investigation result(s): (select all that apply)
Invest No Schedule Ind
Yes
Invest No Schedule Ind Details
System Pressure Was Not A Contributing Factor To The Leak
Invest No Control Room Ind
Yes
Invest No Controller Ind
Yes
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Pipe, Weld, Or Joint Failure
Cause Details
Body Of Pipe
Pwjf Failure Type
Body Of Pipe
Pipe Body Subtype
Crack
Additional Crack Ind
Yes
Additional Other Ind
Yes
Additional Factor Details
Outside Forces From The Traffic Above The Pipe And Subsidance Near Concrete And Brick May Have Been Contributing Factors To The Failure.
Result Material Ind
Yes
Result Material Subtype
Other
Result Material Details
Cast Iron
Hydrotest Conducted Ind
No
Preparer Name
P****** S*******
Preparer Title
Manager Of Pipeline Safety And Compliance
Preparer Email
P***************@t**************.com
Preparer Telephone
(314) 349-2936
Authorizer Name
C**** R* H********
Authorizer Title
Vice President Of Operations Services
Authorizer Telephone
(314) 349-2972
Authorizer Email
C**************@t**************.com
Narrative
After completing a leak investigation from a customer reported call of a slight inside odor, it was determined a nearby 24 inch cast iron main was leaking. Excavation crews had difficulty reaching the main due its depth of 84 inches along with the concrete and brick found below the pipe. Two longitudinal cracks totaling 32 inches in length were found on the bottom section of the pipe. Installation of a stainless steel clamp was attempted to repair the leak; however it was unsuccessful. The incident was deemed to be reportable on february 27, 2016, when it was determined that the repair costs would probably exceed $50,000. The company ordered a 44 inch long steel, split sleeve encapsulation fitting as an alternate repair. The encapsulation fitting required additional excavation of the pipe which uncovered a third crack 16 inches long. The encapsulation fitting was successfully installed around the original two cracks. The third crack was soap taped as a temporary repair. Service technicians remained onsite to monitor the leak while the repairs were made. It is unclear if the pipe was constructed resting on concrete and brick or if subsidence over the past 113 years moved the pipe to its current position. The company is also unable to determine if outside forces from the traffic above the pipe was a contributing factor to the failure. The uncertainty of the root cause of failure has prompted the company to accelerate its plans for full replacement of this pipe segment and adjoining main. The company has proposed replacing or abandoning approximately 2,800 feet of the 24 inch cast iron main involved and approximately 900 feet of 12 inch cast iron main.
| Occurred At | 2016-02-24 08:20:00 |
|---|---|
| Year | 2016 |
| Report Received Date | 2016-03-25 00:00:00 |
| Iyear | 2016.0 |
| Report Number | 20160029.0 |
| Supplemental Number | 16338.0 |
| Report Type | Supplemental Final |
| Operator Id | 11032 PHMSA Enforcement |
| Name | Laclede Gas Co |
| Operator Street Address | 700 Market Street |
| Operator City Name | Saint Louis |
| Operator State Abbreviation | MO |
| Operator Postal Code | 63101 |
| Local Datetime | 2016-02-24 07:52:00 |
| Location Street Address | 1010 Saint Charles St |
| Location City Name | Saint Louis |
| Location County Name | Saint Louis |
| Location State Abbreviation | MO |
| Location Postal Code | 63101 |
| Location Latitude | 38.629945 Google Maps OpenStreetMap |
| Location Longitude | -90.194248 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2016-02-27 09:45:00 |
| Nrc Rpt Num | 1141503 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 1420.0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2016-02-24 08:20:00 |
| On Site Datetime | 2016-02-24 08:43:00 |
| Federal | No |
| Location Type | Utility Right-Of-Way / Easement |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Pavement |
| Depth Of Cover | 84.0 |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Main |
| Installation Year | 1903.0 |
| Pipe Diameter | 24.0 |
| Pipe Specification | Unknown |
| Pipe Manufacturer | Unknown |
| Material Involved | Cast/wrought Iron |
| Release Type | Leak |
| Leak Type | Crack |
| Class Location Type | Class 4 Location |
| Est Cost Oper Paid | 0.0 |
| Est Cost Prop Damage | 114000.0 |
| Est Cost Emergency | 500.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 6093.0 |
| Prpty | 120593.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 12.0 |
| Normal Psig | 12.0 |
| Mop Psig | 25.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Accident Identifier | Notification From Public |
| Investigation Status | Yes, specify investigation result(s): (select all that apply) |
| Invest No Schedule Ind | Yes |
| Invest No Schedule Ind Details | System Pressure Was Not A Contributing Factor To The Leak |
| Invest No Control Room Ind | Yes |
| Invest No Controller Ind | Yes |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Pipe, Weld, Or Joint Failure |
| Cause Details | Body Of Pipe |
| Pwjf Failure Type | Body Of Pipe |
| Pipe Body Subtype | Crack |
| Additional Crack Ind | Yes |
| Additional Other Ind | Yes |
| Additional Factor Details | Outside Forces From The Traffic Above The Pipe And Subsidance Near Concrete And Brick May Have Been Contributing Factors To The Failure. |
| Result Material Ind | Yes |
| Result Material Subtype | Other |
| Result Material Details | Cast Iron |
| Hydrotest Conducted Ind | No |
| Preparer Name | P****** S******* |
| Preparer Title | Manager Of Pipeline Safety And Compliance |
| Preparer Email | P***************@t**************.com |
| Preparer Telephone | (314) 349-2936 |
| Authorizer Name | C**** R* H******** |
| Authorizer Title | Vice President Of Operations Services |
| Authorizer Telephone | (314) 349-2972 |
| Authorizer Email | C**************@t**************.com |
| Narrative | After completing a leak investigation from a customer reported call of a slight inside odor, it was determined a nearby 24 inch cast iron main was leaking. Excavation crews had difficulty reaching the main due its depth of 84 inches along with the concrete and brick found below the pipe. Two longitudinal cracks totaling 32 inches in length were found on the bottom section of the pipe. Installation of a stainless steel clamp was attempted to repair the leak; however it was unsuccessful. The incident was deemed to be reportable on february 27, 2016, when it was determined that the repair costs would probably exceed $50,000. The company ordered a 44 inch long steel, split sleeve encapsulation fitting as an alternate repair. The encapsulation fitting required additional excavation of the pipe which uncovered a third crack 16 inches long. The encapsulation fitting was successfully installed around the original two cracks. The third crack was soap taped as a temporary repair. Service technicians remained onsite to monitor the leak while the repairs were made. It is unclear if the pipe was constructed resting on concrete and brick or if subsidence over the past 113 years moved the pipe to its current position. The company is also unable to determine if outside forces from the traffic above the pipe was a contributing factor to the failure. The uncertainty of the root cause of failure has prompted the company to accelerate its plans for full replacement of this pipe segment and adjoining main. The company has proposed replacing or abandoning approximately 2,800 feet of the 24 inch cast iron main involved and approximately 900 feet of 12 inch cast iron main. |
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