NOTICE: This report is required by 49 CFR Part 191. Failure to report can result in a civil penalty not to exceed
100,000 for each violation for each day that such violation persists except that the maximum civil penalty shall not
exceed $1,000,000 as provided in 49 USC 60122.

U.S Department of Transportation
Pipeline and Hazardous Materials Safety Administration

OMB NO: 2137-0522
EXPIRATION DATE: 10/31/2017

Original Report
Date:
No.

08/29/2016
20160077- 16511
-------------------------------------------------(DOT Use Only)

INCIDENT REPORT - GAS DISTRIBUTION
SYSTEM
A federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to a penalty for failure to comply with a
collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number.
The OMB Control Number for this information collection is 2137-0522. All responses to this collection of information are mandatory. Send comments regarding the
burden or any other aspect of this collection of information, including suggestions for reducing the burden to: Information Collection Clearance Officer, PHMSA, Office
of Pipeline Safety (PHP-30) 1200 New Jersey Avenue, SE, Washington, D.C. 20590.

INSTRUCTIONS
Important: Please read the separate instructions for completing this form before you begin. They clarify the information requested and provide specific examples. If
you do not have a copy of the instructions, you can obtain one from the PHMSA Pipeline Safety Community Web Page at
http://www.phmsa.dot.gov/pipeline/library/forms.

PART A - KEY REPORT INFORMATION
Original:

Report Type: (select all that apply)
Last Revision Date
1. Operator's OPS-issued Operator Identification Number (OPID):
2. Name of Operator
3. Address of Operator:
3a. Street Address
3b. City
3c. State
3d. Zip Code
4. Local time (24-hr clock) and date of the Incident:
5. Location of Incident:
5a. Street Address or location description
5b. City
5c. County or Parish
5d. State:
5e. Zip Code:
5f. Latitude:
Longitude:
6. National Response Center Report Number:
7. Local time (24-hr clock) and date of initial telephonic report to the National
Response Center:
8. Incident resulted from:
9. Gas released:
- Other Gas Released Name:
10. Estimated volume of gas released - Thousand Cubic Feet (MCF):
11. Were there fatalities?
- If Yes, specify the number in each category:
11a. Operator employees
11b. Contractor employees working for the Operator
11c. Non-Operator emergency responders
11d. Workers working on the right-of-way, but NOT
associated with this Operator
11e. General public
11f. Total fatalities (sum of above)
12. Were there injuries requiring inpatient hospitalization?
- If Yes, specify the number in each category:
12a. Operator employees
12b. Contractor employees working for the Operator
12c. Non-Operator emergency responders
12d. Workers working on the right-of-way, but NOT
associated with this Operator
12e. General public
12f. Total injuries (sum of above)
13. Was the pipeline/facility shut down due to the incident?
- If No, Explain:
- If Yes, complete Questions 13a and 13b: (use local time, 24-hr clock)

Supplemental:
Yes

03/13/2017
603
CENTERPOINT ENERGY RESOURCES CORP.
1111 LOUISIANA ST. SUITE 2223D
HOUSTON
Texas
77002
07/31/2016 16:18
2437 Fairfield Ave.
Shreveport
Caddo
Louisiana
71103
32.291799
-93.445797
1154972
07/31/2016 20:30
Unintentional release of gas
Natural Gas

Yes
0
0
0
0
1
1
Yes
0
0
0
0
1
1
Yes

Form PHMSA F 7100.1

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Final:

 14.
15.
16.
17.

13a. Local time and date of shutdown:
13b. Local time pipeline/facility restarted:
- Still shut down? (* Supplemental Report Required)
Did the gas ignite?
Did the gas explode?
Number of general public evacuated:
Time sequence (use local time, 24-hour clock):
17a. Local time operator identified Incident - effective 10-2014, "Incident"
changed to "failure"
17b. Local time operator resources arrived on site:

07/31/2016 21:20
08/04/2016 14:00
Yes
No
0
07/31/2016 17:00
07/31/2016 16:53

PART B - ADDITIONAL LOCATION INFORMATION
1. Was the Incident on Federal land?
2. Location of Incident
3. Area of Incident:
Specify:
If Other, Describe:
Depth of Cover:
4. Did Incident occur in a crossing?
- If Yes, specify type below:
- If Bridge crossing –
Cased/ Uncased:
- If Railroad crossing –
Cased/ Uncased/ Bored/drilled
- If Road crossing –
Cased/ Uncased/ Bored/drilled
- If Water crossing –
Cased/ Uncased
Name of body of water (If commonly known):
Approx. water depth (ft):

No
Utility Right-of-way / Easement
Underground
Under soil
54
No

PART C - ADDITIONAL FACILITY INFORMATION
1. Indicate the type of pipeline system:

Investor Owned
- If Other, specify:

2. Part of system involved in Incident:

Main
- If Other, specify:
2a. Year "Part of system involved in Incident" was installed:
1911
3. When "Main" or "Service" is selected as the "Part of system involved in Incident" (from PART C, Question 2), provide the following:
3a. Nominal diameter of pipe (in):
4
3b. Pipe specification (e.g., API 5L, ASTM D2513):
Unknown
3c. Pipe manufacturer:
Unknown
3d. Year of manufacture:
Unknown
4. Material involved in Incident:
Cast/Wrought Iron
- If Other, specify:
4a. If Steel, Specify seam type:
None/Unknown?
4b. If Steel, Specify wall thickness (inches):
4c. If Plastic, Specify type:
- If Other, describe:
4d. If Plastic, Specify Standard Dimension Ratio (SDR):
Or wall thickness:
4e. If Polyethylene (PE) is selected as the type of plastic in Part C, Question 4.c:
- Specify PE Pipe Material Designation Code (i.e. 2406, 3408,
etc.)
Unknown?
5. Type of release involved :
Leak
- If Mechanical Puncture - Specify Approx size:
Approx. size: in. (axial):
in. (circumferential):
- If Leak - Select Type:
Crack
- If Other, Describe:
- If Rupture - Select Orientation:
- If Other, Describe:
Approx. size: (widest opening):
(length circumferentially or axially):
- If Other - Describe:

Form PHMSA F 7100.1

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 PART D - ADDITIONAL CONSEQUENCE INFORMATION
1. Class Location of Incident :
2. Estimated Property Damage :
2a. Estimated cost of public and non-Operator private
property damage paid/reimbursed by the Operator – effective 6-2011,
"paid/reimbursed by the Operator" removed
Estimated cost of gas released – effective 6-2011, moved to item 2f
2b. Estimated cost of Operator's property damage & repairs
2c. Estimated cost of Operator's emergency response
2d. Estimated other costs
- Describe:
2e. Property damage subtotal (sum of above)

Class 3 Location
$ 50,000

$ 11,046
$ 1,360
$0
$ 62,406

Cost of Gas Released
2f. Estimated cost of gas released
Total of all costs
3. Estimated number of customers out of service:
3a. Commercial entities
3b. Industrial entities
3c. Residences

$0
$ 62,406
0
0
1

PART E - ADDITIONAL OPERATING INFORMATION
1. Estimated pressure at the point and time of the Incident (psig):
2. Normal operating pressure at the point and time of the Incident (psig):
3. Maximum Allowable Operating Pressure (MAOP) at the point and time of
the Incident (psig):
4. Describe the pressure on the system relating to the Incident:
5. Was a Supervisory Control and Data Acquisition (SCADA) based system in
place on the pipeline or facility involved in the Incident?
- If Yes:
5a. Was it operating at the time of the Incident?
5b. Was it fully functional at the time of the Incident?
5c. Did SCADA-based information (such as alarm(s), alert(s),
event(s), and/or volume or pack calculations) assist with the
detection of the Incident?
5d. Did SCADA-based information (such as alarm(s), alert(s),
event(s), and/or volume calculations) assist with the confirmation of
the Incident?
6. How was the Incident initially identified for the Operator?
- If Other, Specify:
6a. If "Controller", "Local Operating Personnel, including
contractors", "Air Patrol", or "Ground Patrol by Operator or its
contractor" is selected in Question 6, specify.
7. Was an investigation initiated into whether or not the controller(s) or control
room issues were the cause of or a contributing factor to the Incident?
- If "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)
- If Yes, Specify investigation result(s) (select all that apply):
- Investigation reviewed work schedule rotations, continuous hours
of service (while working for the Operator), and other factors
associated with fatigue
- Investigation did NOT review work schedule rotations, continuous
hours of service (while working for the Operator), and other factors
associated with fatigue
- Provide an explanation for why not:
- Investigation identified no control room issues
- Investigation identified no controller issues
- Investigation identified incorrect controller action or controller error
- Investigation identified that fatigue may have affected the
controller(s) involved or impacted the involved controller(s) response
- Investigation identified incorrect procedures
- Investigation identified incorrect control room equipment operation
- Investigation identified maintenance activities that affected control
room operations, procedures, and/or controller response
- Investigation identified areas other than those above
Describe:

.50
.50
1.00
Pressure did not exceed MAOP
No

Notification from Emergency Responder

No, the facility was not monitored by a controller(s) at the time
of the Incident

Form PHMSA F 7100.1

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 PART F - DRUG & ALCOHOL TESTING INFORMATION
1. As a result of this Incident, were any Operator employees tested under the
post-accident drug and alcohol testing requirements of DOT's Drug & Alcohol
Testing regulations?
- If Yes:
1a. How many were tested:
1b. How many failed:

No

2. As a result of this Incident, were any Operator contractor employees tested
under the post-accident drug and alcohol testing requirements of DOT's Drug &
Alcohol Testing regulations?
- If Yes:
2a. How many were tested:
2b. How many failed:

No

PART G - CAUSE INFORMATION
Select only one box from PART G in shaded column on left representing the Apparent Cause of the Incident, and answer the questions on the
right. Describe secondary, contributing, or root causes of the Incident in the narrative (PART H).
G8 - Other Incident Cause

Apparent Cause:

G1 - Corrosion Failure – only one sub-cause can be picked from shaded left-hand column
Corrosion Failure Sub-Cause:
- If External Corrosion:
1. Results of visual examination:
- If Other, Specify:
2. Type of corrosion:
- Galvanic
- Atmospheric
- Stray Current
- Microbiological
- Selective Seam
- Other
- If Other, Describe:
3. The type(s) of corrosion selected in Question 2 is based on the following:
- Field examination
- Determined by metallurgical analysis
- Other
- If Other, Describe:
4. Was the failed item buried under the ground?
- If Yes:
4a. Was failed item considered to be under cathodic protection at the
time of the incident?
- If Yes, Year protection started:
4b. Was shielding, tenting, or disbonding of coating evident at the
point of the incident?
4c. Has one or more Cathodic Protection Survey been conducted at
the point of the incident?
If "Yes, CP Annual Survey" – Most recent year conducted:
If "Yes, Close Interval Survey" – Most recent year conducted:
If "Yes, Other CP Survey" – Most recent year conducted:
- If No:
4d. Was the failed item externally coated or painted?
5. Was there observable damage to the coating or paint in the vicinity of the
corrosion?
6. Pipeline coating type, if steel pipe is involved:
- If Other, Describe:
- If Internal Corrosion:
7. Results of visual examination:
- If Other, Describe:
8. Cause of corrosion (select all that apply):
- Corrosive Commodity
- Water drop-out/Acid
- Microbiological
- Erosion
- Other
Form PHMSA F 7100.1

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 - If Other, Specify:
9. The cause(s) of corrosion selected in Question 8 is based on the following: (select all that apply):
- Field examination
- Determined by metallurgical analysis
- Other
- If Other, Describe:
10. Location of corrosion (select all that apply):
- Low point in pipe
- Elbow
- Drop-out
- Other
- If Other, Describe:
11. Was the gas/fluid treated with corrosion inhibitor or biocides?
12. Were any liquids found in the distribution system where the Incident
occurred?
Complete the following if any Corrosion Failure sub-cause is selected AND the "Part of system involved in incident" (from PART C,
Question 2) is Main, Service, or Service Riser.
13. Date of the most recent Leak Survey conducted
14. Has one or more pressure test been conducted since original construction
at the point of the Incident?
- If Yes:
Most recent year tested:
Test pressure:

G2 – Natural Force Damage – only one sub-cause can be picked from shaded left-handed column
Natural Force Damage – Sub-Cause:

-

If Earth Movement, NOT due to Heavy Rains/Floods:
1. Specify:
- If Other, Specify:

-

If Heavy Rains/Floods:
2. Specify:
- If Other, Specify:

-

If Lightning:
3. Specify:
- If Temperature:
4. Specify:
- If Other, Specify:
If Other Natural Force Damage:
5. Describe:
Complete the following if any Natural Force Damage sub-cause is selected.
6. Were the natural forces causing the Incident generated in conjunction with
an extreme weather event?
6.a If Yes, specify (select all that apply):
- Hurricane
- Tropical Storm
- Tornado
- Other
- If Other, Specify:

-

G3 – Excavation Damage – only one sub-cause can be picked from shaded left-hand column
Excavation Damage – Sub-Cause:

-

If Previous Damage due to Excavation Activity: Complete the following ONLY IF the "Part of system involved in Incident" (from Part C,
Question 2) is Main, Service, or Service Riser.
1. Date of the most recent Leak Survey conducted
2. Has one or more pressure test been conducted since original construction
at the point of the Incident?
- If Yes:
Most recent year tested:
Test pressure:
Complete the following if Excavation Damage by Third Party is selected.
3. Did the operator get prior notification of the excavation activity?
3a. If Yes, Notification received from: (select all that apply):
- One-Call System

Form PHMSA F 7100.1

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 - Excavator
- Contractor
- Landowner
Complete the following mandatory CGA-DIRT Program questions if any Excavation Damage sub-cause is selected.
4. Do you want PHMSA to upload the following information to CGA-DIRT (
www.cga-dirt.com)?
5. Right-of-Way where event occurred (select all that apply):
- Public
- If Public, Specify:
- Private
- If Private, Specify:
- Pipeline Property/Easement
- Power/Transmission Line
- Railroad
- Dedicated Public Utility Easement
- Federal Land
- Data not collected
- Unknown/Other
6. Type of excavator :
7. Type of excavation equipment :
8. Type of work performed :
9. Was the One-Call Center notified?
9a. If Yes, specify ticket number:
9b. If this is a State where more than a single One-Call Center exists, list
the name of the One-Call Center notified:
10. Type of Locator:
11. Were facility locate marks visible in the area of excavation?
12. Were facilities marked correctly?
13. Did the damage cause an interruption in service?
13a. If Yes, specify duration of the interruption:
14. Description of the CGA-DIRT Root Cause (select only the one predominant first level CGA-DIRT Root Cause and then, where available as a
choice, the one predominant second level CGA-DIRT Root Cause as well):
- Root Cause Description:
- If One-Call Notification Practices Not Sufficient, specify:
- If Locating Practices Not Sufficient, specify:
- If Excavation Practices Not Sufficient, specify:
- If Other/None of the Above, explain:

G4 - Other Outside Force Damage - only one sub-cause can be selected from the shaded left-hand column
Other Outside Force Damage – Sub-Cause:

-

If Damage by Car, Truck, or Other Motorized Vehicle/Equipment NOT Engaged in Excavation:
1. Vehicle/Equipment operated by:
- If Damage by Boats, Barges, Drilling Rigs, or Other Maritime Equipment or Vessels Set Adrift or Which Have Otherwise Lost Their
Mooring:
2. Select one or more of the following IF an extreme weather event was a factor:
- Hurricane
- Tropical Storm
- Tornado
- Heavy Rains/Flood
- Other
- If Other, Specify:
- If Previous Mechanical Damage NOT Related to Excavation: Complete the following ONLY IF the "Part of system involved in Incident" (from
Part C, Question 2) is Main, Service, or Service Riser.
3. Date of the most recent Leak Survey conducted:
4. Has one or more pressure test been conducted since original construction
at the point of the Incident?
- If Yes:
Most recent year tested:
Test pressure (psig):
- If Intentional Damage:
5. Specify:
- If Other, Specify:
- If Other Outside Force Damage:
6. Describe:

Form PHMSA F 7100.1

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 G5 - Pipe, Weld, or Joint Failure - only one sub-cause can be selected from the shaded left-hand column
Pipe, Weld or Joint Failure – Sub-Cause:

-

If Body of Pipe:
1. Specify:
- If Other, Describe:

-

If Butt Weld:
2. Specify:
- If Other, Describe:

-

If Fillet Weld:
3. Specify:
- If Other, Describe:

-

If Pipe Seam:
4. Specify:
- If Other, Describe:

-

If Mechanical Fitting:
5. Specify the mechanical fitting involved:
- If Other, Describe:
6. Specify the type of mechanical fitting:
- If Other, Describe:
7. Manufacturer:
8. Year manufactured:
9. Year Installed:
10. Other attributes:
11. Specify the two materials being joined:
11a. First material being joined:
- If Other, Specify:
11b. If Plastic, specify:
- If Other Plastic, specify:
11c. Second material being joined:
- If Other, Specify:
11d. If Plastic, specify:
- If Other Plastic, Specify:
12. If used on plastic pipe, did the fitting – as designed by the manufacturer –
include restraint?
12a. If Yes, specify:
- If Compression Fitting:
13. Fitting type:
14. Manufacturer:
15. Year manufactured:
16. Year installed:
17. Other attributes:
18. Specify the two materials being joined:
18a. First material being joined:
- If Other, specify:
18b. If Plastic, specify:
- If Other Plastic, specify:
18c. Second material being joined:
If Other, specify:
18d. If Plastic, specify:
- Other Plastic, specify:
- If Fusion Joint:
19. Specify:
- If Other, Specify:
20. Year installed:
21. Other attributes:
22. Specify the two materials being joined:
22a. First material being joined:
- If Other, Specify:
22b. Second material being joined:
- If Other, Specify:
- If Other Pipe, Weld, or Joint Failure:
23. Describe:

Form PHMSA F 7100.1

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 Complete the following if any Pipe, Weld, or Joint Failure sub-cause is selected.
24. Additional Factors (select all that apply):
- Dent
- Gouge
- Pipe Bend
- Arc Burn
- Crack
- Lack of Fusion
- Lamination
- Buckle
- Wrinkle
- Misalignment
- Burnt Steel
- Other
- If Other, Specify:
25. Was the Incident a result of:
- Construction defect
Specify:
- Material defect
Specify:
- If Other, Specify:
- Design defect
- Previous damage
26. Has one or more pressure test been conducted since original construction
at the point of the Incident?
- If Yes:
Most recent year tested:
Test pressure:

G6 - Equipment Failure - only one sub-cause can be selected from the shaded left-hand column
Equipment Failure – Sub-Cause:

-

If Malfunction of Control/Relief Equipment:
1. Specify:
- Control Valve
- Instrumentation
- SCADA
- Communications
- Block Valve
- Check Valve
- Relief Valve
- Power Failure
- Stopple/Control Fitting
- Pressure Regulator
- Other
- If Other, Specify:

-

If Threaded Connection Failure:
2. Specify:
- If Other, Specify:

-

If Non-threaded Connection Failure:
3. Specify:
- If Other, Specify:

- If Valve:
4. Specify:
- If Other, Specify:
4a. Valve type:
4b. Manufactured by:
4c. Year manufactured:
- If Other Equipment Failure:
5. Describe:

G7 - Incorrect Operation - only one sub-cause can be selected from the shaded left-hand column
Incorrect Operation Sub-Cause:
- If Other Incorrect Operation:
1. Describe:
Form PHMSA F 7100.1

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 Complete the following if any Incorrect Operation sub-cause is selected.
2. Was this Incident related to: (select all that apply)
- Inadequate procedure
- No procedure established
- Failure to follow procedure
- Other
- If Other, Describe:
3. What category type was the activity that caused the Incident:
4. Was the task(s) that led to the Incident identified as a covered task in your
Operator Qualification Program?
4a. If Yes, were the individuals performing the task(s) qualified for the
task(s)?

G8 - Other Incident Cause - only one sub-cause can be selected from the shaded left-hand column
Other Incident Cause – Sub-Cause:

Unknown

-

If Miscellaneous:
1. Describe:
- If Unknown:
2. Specify:

Still under investigation, cause of Incident to be determined*
(*Supplemental Report required)

PART H - NARRATIVE DESCRIPTION OF THE INCIDENT
Investigation revealed erosion of soil and cave in of surface pavement around a sewer manhole discovered on May 6, 2016,
which caused damage to the connection of a service line providing service to 2437 Fairfield Ave.. This service line connection was
repaired with the installation of a new service line and tap on May 6, 2016. There is no evidence that there was any damage to the
cast iron main at that time or during the May 23, 2016 bar hole inspection or during the visual inspection of May 26, 2016.
Subsequent metallurgical inspection revealed that the pipe wall thickness/strength was well preserved without any graphitic
corrosion beyond shallow surface corrosion. The metallurgy and the investigation indicate that the pipe fractured due to a recent
overload event occurring after a loss of support, most likely caused by washout/erosion, possibly from leaking liquid from the
sewer manhole, and improper backfill and compaction. The investigation to date established that the fracture occurred
subsequent to the May 26, 2016 inspection and before the July 31, 2016 incident.

PART I - PREPARER AND AUTHORIZED SIGNATURE
Preparer's Name
Preparer's Title
Preparer's Telephone Number
Preparer's E-mail Address
Preparer's Facsimile Number
Authorize Signature's Name
Authorized Signature's Title
Authorized Signature's Email Address

James Todd Hebert
Operations Specialist
337-256-2161
james.hebert@centerpointenergy.com
Bobby R. Burns
Regional Operations Director
bobby.r.burns@centerpointenergy.com

Form PHMSA F 7100.1

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