ML12089A127
| ML12089A127 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/19/2012 |
| From: | Flores R, Mireles K Luminant Power |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation, State of TX, Commission on Environmental Quality |
| References | |
| TXX12043 | |
| Download: ML12089A127 (4) | |
Text
Rafael Flores Senior Executive Vice President
& Chief Nuclear Officer rafael.ifores@ Luminant.com Luminant Power P 0 Box 1002 6322 North FM 56 Glen Rose, TX 76043 Luminant T 254 897 5550 C 817 559 0403 F 254 897 6652 March 19,2012 Log #: TXX12043 CERTIFIED MAIL 7002 2030 0000 3748 1249 Texas Commission on Environmental Quality Compliance Monitoring Team (MC224)
Enforcement Division P.O. Box 13087 Austin, Texas 78711-3087 Comanche Peak Nuclear Power Plant TPDES Wastewater Permit #001854 Unauthorized Bypass Notification
Dear Sir/Madam:
This letter and attachment are provided in accordance with the above referenced permit, Monitoring and Reporting Requirements, Item 7.a., page 5. The initial telephone notification was provided to Ms.
Carol Moulton, TCEQ Region 4, on 03/13/2012, 14:41 hours.
If you have any questions, please contact Mr. David Rutledge at 214-875-8296 or david.rutledge@luminant.com.
Sincerely, By: R DER A member of the STARS (Strategic Teaming and Resource Sharing) Alliance i6e~S Callaway
- Comanche Peak
- Diablo Canyon - Palo Verde
- San Onofre
- South Texas Project
- Wolf Creek
Texas Commission on Environmental Quality TXX-12043 Page 2 03/19/2012 Xc: Ms. Carol Moulton Texas Commission on Environmental Quality, Region 4 2309 Gravel Drive Fort Worth, TX 76118-6951 U.S. Nuclear Regulatory Commission Document Control Desk 11555 Rockville Pike Rockville, MD 20852
A, Water Quality Noncompliance Notification
- See back of Form for Guidance for Completion*
X Unauthorized Discharge E-Reportable Effluent Violation El Other
- General I1hnformation I
Entity Name: Comanche Peak NPP Telephone No:
(214) 875-8296 X Permittee El Subscriber TCEQ Region: 4 County: Somervell
- Permit Number: 001854
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Description of Noncompliance (include location, discharge route, and estimated volume of unauthorized discharge):
Sewage lift station overflow on-site at facility resulting to a storm water drainage conveyance. No precise volume of release is available due to the nature of the failure. Several hundred gallons may be assumed to have entered the drainage, but a significant amount less is believed to have reached Squaw Creek Reservoir. Telephone notification provided to the Regional Office 03/13/2012, 14:41 hours.
Cause of Noncompliance: A power failure due to lift station transformer malfunction which eliminated all power to both lift station pumps and lift station alarm. Consequently, the lift station alarm function was disabled and plant personnel were not immediately aware of the failed pumps.
Duration:
Start Date and Time: 03/13/2012, 14:00 hours (DISCOVERY)
End Date and Time: 03/13/2012, 14:20 hours Or Date Expected to be Corrected: NA Potential Danger to Human Health and Safety or the Environment: Minimal due to fast response and no evidence of fish kill.
AActions Taken Monitoring Data: Data should be attached or submitted to TCEQ when available.
HYes X No Field Measurements Yes No Laboratory Samples C1 Yes X No Fish Kill If yes, estimated number killed: NA Actions Taken to Mitigate Adverse Effects: Power was restored and lift station pumps returned to service eliminating the discharge. Water which could be recovered was returned to the system and the area and piping was disinfected as much as reasonably possible with a sodium hypochlorite solution.
Actions Taken to Correct the Problem and Prevent Recurrence: A modification was made to the affected sewage lift station controls to separate the alarm circuit from the pump circuit. This will ensure the operation of the lift station's audible and strobe alarms should a potential failure of the transformer occur in the future. In addition, this event was captured in the Comanche Peak Nuclear Power Plant's corrective action program to investigate other enhancements to this lift station and to assess the extent this event may apply to other on-site sewage lift stations.
LVerification Information Information Reported By (Name/Title): Kim Mireles Date Reported: 03/19/2012 Signature:
"1y/k,*
i.a.,
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NM: If this form Is being used for a 5-day written report, a copy of the form should be sent to the TCEQ Region Office, and the original to: TCEQ, Compliance Monitoring Team (MC224), Enforcement Division, P.O. Box 13087, Austin, TX 78711-3087.
- If the noncompliance is an unauthorized discharge from a wastewater collection system, use the permit number of the treatment plant to which the collection system is tied. If you are uncertain of this permit number, you may call the TCEQ Regional Office for assistance.
TCEQ - 00501 (Rev. 09-07-10)
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Guidance - Water Quality l V
"* When reporting an unauthorized N
discharge or sanitary sewer overflow (SSO), it is important to include all information that is requested on the notification form. If you have questions about the form, do not hesitate to call your TCEQ Regional Office and ask to speak to a wastewater investigator. All information should comply with reporting requirements noted in Texas Water Code Section 26.039, 30 Texas Administrative Code (TAC)
Section 305.125(9), and, if applicable, 30 TAC Section 319.302(b).
This form may be used as the 24-hour notification to the Regional Office and may also be used as the 5-day written report. If the event was reported within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> via phone, or an incomplete form was submitted as part of the 24-hour reporting requirement, you must fax or mail a completed, signed copy within 5 days to the Water Section Manager at your TCEQ Regional Office. The original, signed copy should be mailed to the address located at the bottom of the form.
Unauthorized Discharge - An unauthorized discharge is any discharge of wastewater into or adjacent to waters in the state at a location not permitted as an outfall. An SSO is any overflow, regardless of volume, from a sewer collection system (i.e., lift stations, manholes, force mains, cleanouts, service lines). An SSO is considered to be an "unauthorized discharge."
General Information "Entity name" is your permitted name (owner name for subscriber systems). Designate with an "Y' or "V" to identify whether you are a permittee or subscriber.
Permit Number - Include your TCEQ WQ permit number (i.e., WQoo1234500l). If you are a subscriber, use the permit number of the treatment plant to which the collection system is tied. If the WQ permit is unknown, please call the TCEQ Regional Office for assistance.
Noncompliance Summary Description of Noncompliance:
Location & collection system structure (i.e.,
Manhole at 65o Main St.)
Route of discharge - Follow the discharge from its origin to where it was contained or entered a receiving waterway. If the receiving waterway is unnamed, provide the name of the nearest named adjoining TCEQ - 00501 (Rev. 9-7-10) loncompliance Notification Form waterway. (Examples: soaked into ground; manhole -* nearby storm ditch -
unnamed tributary of Kings Creek)
Estimated amount of the discharge (includes any recovered amount)
Cause of Noncompliance: Why did this incident occur? Was it caused by grease, blockage, infiltration or inflow, equipment failure, structural failure, power outage, vandalism, human error, contractor, unknown?
Duration: Include dates and times.
Potential Danger to Human Health & Safety or the Environment: Any danger to the aforementioned should be promptly discussed with the TCEQ Regional Office. Additional notifications may be necessary.
Actions Taken Monitoring Data: Designate with an "X" or "."
Actions taken to Mitigate Adverse Effects:
Ask yourself, "How did we keep this from becoming an environmental or health problem?" Include information such as:
amount recovered from the total estimated amount stated under the description above method used to recover the wastewater treatments used for disinfection or deodorizing activities to lessen impact to property, a waterway, or public health Actions taken to correct the problem and prevent recurrence: Ask yourself, "How did we address the direct cause of the overflow, and was there anything else we did to prevent this noncompliance from occurring again?" Include actions such as:
- jetting the main educating residents about proper grease disposal adding the location to your preventative maintenance list repairing equipment, circuits, or replacing lines, etc.
Verification Information Information Reported By: Include both your name and title. Please sign and date the form.
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