Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2016-02-07 — VA
Operator
Washington Gas Light Co
Cause
Corrosion Failure
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$0
Incident datetime
2016-02-07 15:31
Report number
Location
VA, PRINCE WILLIAM COUNTY
Narrative
On sunday, february 7, 2016, at approximately 15:18, washington gas received a call from the prince william county fire department relative to an outside gas odor located at 14100 franklin st. In woodbridge, va. Washington gas personnel arrived on scene at 15:31. Upon arrival, the washington gas technician had exited his vehicle and was applying the appropriate ppe when a possible low order explosion occurred. There were no injuries or fatalities as a result of the incident. An odorant sample was taken and the level of odorant was determined to be acceptable. Relative to part a #13 of this form. Selecting yes would not allow the date & time to be inputted before the current date. Wg response to part a #13 is yes. #13a. 2/8/2016 2100hrs. #13b. Customer has not elected to have natural gas restored that was previously inactive. Part c #3c. Reading tube corp. & revere tubing were brands used for bare copper service. Wg is unable to identify which was used for this specific service. Part d #2f. The leak size (size of opening on pipe) was unknown. Known facts included that gas was migrating into 14100 franklin st, and there was a sufficient concentration of gas to result in an ignition. In order to arrive at an estimated amount of gas lost, the home size was figured at 2,100 sq. Ft., with an estimated ceiling height of 8 ft. This results in an estimated home volume of 2,100 sq. Ft. * 8 ft = 16,800 cu. Ft. An explosive mixture would exist when approximately 5 - 15% of a volume of space is occupied by gas. Using a conservative volume of 16,800 cu. Ft., 10% (mid-range between the lel and uel) of the home volume would equal 1,680 cu. Ft. At a heating value of approximately 1,040 btu/cu. Ft., this would translate to 1,747,200 btu. At $3/mmbtu, this amount of gas would cost $5.24. It is unlikely that the entire structure filled with 10% of gas due to the localized nature of the incident. However, using the entire home volume provides a conservative estimate that takes into account some contingencies such as gas that may have migrated elsewhere (underground, or escaped the home before the ignition). Part g # 5. Bare copper service line is not coated.
Detailed record list
Occurred At
2016-02-07 15:31:00
Year
2016
Report Received Date
2016-03-08 00:00:00
Iyear
2016.0
Report Number
20160023.0
Supplemental Number
30553.0
Report Type
Supplemental
Operator Id
22182
Name
Washington Gas Light Co
Operator Street Address
1000 Maine Avenue, Sw
Operator City Name
Washington
Operator State Abbreviation
DC
Operator Postal Code
20024
Local Datetime
2016-02-07 15:18:00
Location Street Address
14100 Franklin St
Location City Name
Woodbridge
Location County Name
Prince William County
Location State Abbreviation
VA
Location Postal Code
22191
Location Latitude
38.646504
Location Longitude
-77.277534
Nrc Rpt Datetime
2016-02-07 16:41:00
Nrc Rpt Num
1139990
Commodity Released Type
Natural Gas
Unintentional Release
1.68
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
Explode Ind
Yes
Num Pub Evacuated
12.0
Incident Identified Datetime
2016-02-07 15:31:00
On Site Datetime
2016-02-07 15:31:00
Federal
No
Location Type
Private Property
Incident Area Type
Aboveground
Incident Area Subtype
Inside A Building
Crossing
No
Pipe Facility Type
Privately Owned
System Part Involved
Service
Installation Year
1963.0
Pipe Diameter
0.5
Pipe Specification
Type K
Pipe Manufacturer
Reading Tube Corp. Or Revere Tubing
Material Involved
Copper
Release Type
Leak
Leak Type
Pinhole
Class Location Type
Class 3 Location
Est Cost Oper Paid
48600.0
Est Cost Prop Damage
0.0
Est Cost Emergency
30000.0
Est Cost Other
0.0
Est Cost Unintentional Release
5.0
Prpty
78605.0
Commercial Affected
0.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
20.0
Normal Psig
20.0
Mop Psig
25.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
No
Accident Identifier
Notification From Emergency Responder
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Corrosion Failure
Cause Details
External Corrosion
Internal External
External Corrosion
Visual Exam Results
General Corrosion
Other Corrosion Ind
Yes
Corrosion Type Details
Corrosive Soil
Metallurgical Basis Ind
Yes
Underground Location
Yes
Under Cathodic Protection Ind
No
Shielding Evident
No
Cathodic Survey Type
No
Prior Damage
No
Coating Type
Other
Coating Type Details
See Narrative
Cor Hydrotest Leak Survey Date
2015-05-19 00:00:00
Cor Hydrotest Conducted Ind
No
Preparer Name
R****** F**********
Preparer Title
Supervisor - Pipeline Safety
Preparer Email
R*****************@w******.com
Preparer Telephone
703-750-5921
Authorizer Name
S**** P****
Authorizer Title
Avp - Pipeline Safety
Authorizer Telephone
703-750-4341
Authorizer Email
S*****@w******.com
Narrative
On sunday, february 7, 2016, at approximately 15:18, washington gas received a call from the prince william county fire department relative to an outside gas odor located at 14100 franklin st. In woodbridge, va. Washington gas personnel arrived on scene at 15:31. Upon arrival, the washington gas technician had exited his vehicle and was applying the appropriate ppe when a possible low order explosion occurred. There were no injuries or fatalities as a result of the incident. An odorant sample was taken and the level of odorant was determined to be acceptable. Relative to part a #13 of this form. Selecting yes would not allow the date & time to be inputted before the current date. Wg response to part a #13 is yes. #13a. 2/8/2016 2100hrs. #13b. Customer has not elected to have natural gas restored that was previously inactive. Part c #3c. Reading tube corp. & revere tubing were brands used for bare copper service. Wg is unable to identify which was used for this specific service. Part d #2f. The leak size (size of opening on pipe) was unknown. Known facts included that gas was migrating into 14100 franklin st, and there was a sufficient concentration of gas to result in an ignition. In order to arrive at an estimated amount of gas lost, the home size was figured at 2,100 sq. Ft., with an estimated ceiling height of 8 ft. This results in an estimated home volume of 2,100 sq. Ft. * 8 ft = 16,800 cu. Ft. An explosive mixture would exist when approximately 5 - 15% of a volume of space is occupied by gas. Using a conservative volume of 16,800 cu. Ft., 10% (mid-range between the lel and uel) of the home volume would equal 1,680 cu. Ft. At a heating value of approximately 1,040 btu/cu. Ft., this would translate to 1,747,200 btu. At $3/mmbtu, this amount of gas would cost $5.24. It is unlikely that the entire structure filled with 10% of gas due to the localized nature of the incident. However, using the entire home volume provides a conservative estimate that takes into account some contingencies such as gas that may have migrated elsewhere (underground, or escaped the home before the ignition). Part g # 5. Bare copper service line is not coated.
| Occurred At | 2016-02-07 15:31:00 |
|---|---|
| Year | 2016 |
| Report Received Date | 2016-03-08 00:00:00 |
| Iyear | 2016.0 |
| Report Number | 20160023.0 |
| Supplemental Number | 30553.0 |
| Report Type | Supplemental |
| Operator Id | 22182 PHMSA Enforcement |
| Name | Washington Gas Light Co |
| Operator Street Address | 1000 Maine Avenue, Sw |
| Operator City Name | Washington |
| Operator State Abbreviation | DC |
| Operator Postal Code | 20024 |
| Local Datetime | 2016-02-07 15:18:00 |
| Location Street Address | 14100 Franklin St |
| Location City Name | Woodbridge |
| Location County Name | Prince William County |
| Location State Abbreviation | VA |
| Location Postal Code | 22191 |
| Location Latitude | 38.646504 Google Maps OpenStreetMap |
| Location Longitude | -77.277534 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2016-02-07 16:41:00 |
| Nrc Rpt Num | 1139990 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 1.68 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| Explode Ind | Yes |
| Num Pub Evacuated | 12.0 |
| Incident Identified Datetime | 2016-02-07 15:31:00 |
| On Site Datetime | 2016-02-07 15:31:00 |
| Federal | No |
| Location Type | Private Property |
| Incident Area Type | Aboveground |
| Incident Area Subtype | Inside A Building |
| Crossing | No |
| Pipe Facility Type | Privately Owned |
| System Part Involved | Service |
| Installation Year | 1963.0 |
| Pipe Diameter | 0.5 |
| Pipe Specification | Type K |
| Pipe Manufacturer | Reading Tube Corp. Or Revere Tubing |
| Material Involved | Copper |
| Release Type | Leak |
| Leak Type | Pinhole |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 48600.0 |
| Est Cost Prop Damage | 0.0 |
| Est Cost Emergency | 30000.0 |
| Est Cost Other | 0.0 |
| Est Cost Unintentional Release | 5.0 |
| Prpty | 78605.0 |
| Commercial Affected | 0.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 20.0 |
| Normal Psig | 20.0 |
| Mop Psig | 25.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Emergency Responder |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Corrosion Failure |
| Cause Details | External Corrosion |
| Internal External | External Corrosion |
| Visual Exam Results | General Corrosion |
| Other Corrosion Ind | Yes |
| Corrosion Type Details | Corrosive Soil |
| Metallurgical Basis Ind | Yes |
| Underground Location | Yes |
| Under Cathodic Protection Ind | No |
| Shielding Evident | No |
| Cathodic Survey Type | No |
| Prior Damage | No |
| Coating Type | Other |
| Coating Type Details | See Narrative |
| Cor Hydrotest Leak Survey Date | 2015-05-19 00:00:00 |
| Cor Hydrotest Conducted Ind | No |
| Preparer Name | R****** F********** |
| Preparer Title | Supervisor - Pipeline Safety |
| Preparer Email | R*****************@w******.com |
| Preparer Telephone | 703-750-5921 |
| Authorizer Name | S**** P**** |
| Authorizer Title | Avp - Pipeline Safety |
| Authorizer Telephone | 703-750-4341 |
| Authorizer Email | S*****@w******.com |
| Narrative | On sunday, february 7, 2016, at approximately 15:18, washington gas received a call from the prince william county fire department relative to an outside gas odor located at 14100 franklin st. In woodbridge, va. Washington gas personnel arrived on scene at 15:31. Upon arrival, the washington gas technician had exited his vehicle and was applying the appropriate ppe when a possible low order explosion occurred. There were no injuries or fatalities as a result of the incident. An odorant sample was taken and the level of odorant was determined to be acceptable. Relative to part a #13 of this form. Selecting yes would not allow the date & time to be inputted before the current date. Wg response to part a #13 is yes. #13a. 2/8/2016 2100hrs. #13b. Customer has not elected to have natural gas restored that was previously inactive. Part c #3c. Reading tube corp. & revere tubing were brands used for bare copper service. Wg is unable to identify which was used for this specific service. Part d #2f. The leak size (size of opening on pipe) was unknown. Known facts included that gas was migrating into 14100 franklin st, and there was a sufficient concentration of gas to result in an ignition. In order to arrive at an estimated amount of gas lost, the home size was figured at 2,100 sq. Ft., with an estimated ceiling height of 8 ft. This results in an estimated home volume of 2,100 sq. Ft. * 8 ft = 16,800 cu. Ft. An explosive mixture would exist when approximately 5 - 15% of a volume of space is occupied by gas. Using a conservative volume of 16,800 cu. Ft., 10% (mid-range between the lel and uel) of the home volume would equal 1,680 cu. Ft. At a heating value of approximately 1,040 btu/cu. Ft., this would translate to 1,747,200 btu. At $3/mmbtu, this amount of gas would cost $5.24. It is unlikely that the entire structure filled with 10% of gas due to the localized nature of the incident. However, using the entire home volume provides a conservative estimate that takes into account some contingencies such as gas that may have migrated elsewhere (underground, or escaped the home before the ignition). Part g # 5. Bare copper service line is not coated. |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA