ML12130A220

2011 Annual Environmental Operating Report

ML12130A220
Person / Time
Site:	North Anna
Issue date:	04/26/2012
From:	Gerald Bichof Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
12-256
Download: ML12130A220 (6)

Text

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 April 26, 2012 United States Nuclear Regulatory Commission Serial No.12-256 Attention: Document Control Desk NAPS/JHL Washington, D. C. 20555 Docket Nos. 50-338 50-339 License Nos. NPF-4 NPF-7 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION)

NORTH ANNA POWER STATION UNITS 1 AND 2 ANNUAL ENVIRONMENTAL OPERATING REPORT Enclosed is the Annual Environmental Operating Report for North Anna Power Station Units 1 and 2 for 2011, pursuant to Section 5.4.1 of the Technical Specifications, Appendix B - Environmental Protection Plan.

-Ifyou have any questions or require additional information, please contact Donald Taylor at (540) 894-2616.

Very truly yours, G. T. Bischof Site Vice President Enclosure cc: U. S. Nuclear Regulatory Commission Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257 NRC Senior Resident Inspector North Anna Power Station

VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNITS 1 AND 2 APPENDIX B ENVIRONMENTAL PROTECTION PLAN 2011 ANNUAL REPORT DOCKET NOS. 50-338 AND 50-339 Page 1 of 5

1. - - 1ý INTRODUCTION The 2011 Environmental Operating Report for the North Anna Power Station is submitted by Virginia Electric and Power Company in accordance with Section 5.4.1 of Appendix B, of the Environmental Protection Plan (EPP).

The objective of the EPP is to verify that the North Anna Power Station is operated in an environmentally acceptable manner, consistent with NRC and other federal, state and local requirements as well as to keep the NRC informed of any environmental effects of facility construction or operation.

During 2011, no significant adverse environmental impact occurred as a result of the operation of North Anna Power Station, Units 1 and 2. Aquatic issues are addressed in the licensee's VPDES permit (Number VA 0052451) issued by the Virginia State Water Control Board. The VPDES Permitting Program is administered by the Virginia (VA) Department of Environmental Quality (DEQ). The NRC relies on this agency for regulation of matters involving water quality and aquatic biota.

Listed below are the summaries and analyses required by Subsection 4.2 of the EPP.

PLANT DESIGN AND OPERATION (SECTION 3.1)

A review of all changes in station design, operation, tests and experiments did not reveal any potentially significant or unreviewed environmental issues.

EROSION CONTROL INSPECTION - SITE (SECTION 4.2.2.1)

Performance of Periodic Test Procedure, l-PT-9.3, Erosion Control Inspection-Station Site, and 0-PT-75.12, Visual Inspection of the Service Water Reservoir Dike Crest and Toe, were completed by the Civil/Design Engineering Department. Fifteen (15) areas of concern were identified during the performance of l-PT-9.3 and five (5) areas of concern were identified during the performance of 0-PT-75.12.

The areas identified in I-PT-9.3 were minor erosion issues. Three concrete ditches needed to be repaired/cleaned out, near the Recreation Island access road, discharge canal road, and the Snubber Shop. Two animal burrows near the Snubber Shop and Independent Spent Fuel Storage Installation (ISFSI) areas needed Page 2 of 5

to be filled. Four areas were identified which needed reseeding (sloped areas near ISFSI (2), Calibration Lab, and North Anna Nuclear Information Center (NANIC)). There were three areas identified which needed gravel/rip-rap replacement (NANIC, south east corner of ISFSI, and ISFSI drainage ditch) . Two areas were identified were drain pipes and a drain cover needed to be cleaned out (ISFSI) . A rip-rap area near the intake structure had small tree growth which needed to be removed. All of the issues identified were entered into the station's Corrective Action Program (CAP) and work orders were assigned to each of them.

Corrective action for all of the above were completed. All of the issues identified were minor erosion issues that do not adversely impact site erosion control measures.

The areas of concern identified in 0-PT-75.12 were also minor erosion issues and include 1) animal burrows on the north slope of the Service Water Reservoir (SWR), 2) vegetation growth on the SWR slopes 3) minor erosion at the top of the slope near the SWR Pump House 4) pot holes and ruts in the road. All issues were entered into the station's CAP. All corrective actions were completed.

Site Separation construction activities for the proposed construction of Unit 3, began in November 2010 and are currently on-going. Site Separation construction activities are controlled by a construction permit and construction Storm Water Pollution Prevention Plan (SWPPP). Silt fences, rip-rap and straw bales are used to control erosion and storm water runoff impacts. Drilling, Digging, and Cutting (DDC) permits are reviewed by the station Environmental Compliance Coordinator (ECC) prior to this type of work being performed. The area impacted by the site separation construction is routinely inspected by a qualified Louisa County Storm Water/Land Disturbance Inspector. It is also inspected weekly and after every qualifiable rainfall event to meet the requirements of the construction SWPPP. There were no instances of non-compliance to applicable environmental regulations in 2011. No reports were submitted relative to non-compliance during the site separation construction activity. There were no adverse erosion concerns identified in the routine storm water inspections. There were no erosion issues related to the site separation work areas identified in 0-PT-9.3.

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EROSION AND SEDIMENT CONTROL PROGRAM - CORRIDOR RIGHTS-OF-WAY SECTION 4.2.2.2)

During 2011, all transmission line rights-of-way were patrolled to coordinate brush and tree work needed for maintenance of the lines. This work involved the following:

• North Anna-to-Gordonsville corridor: The patrol revealed that there was no significant tree and brush work needed. No significant erosion and sedimentation issues were observed.

• North Anna-to-Morrisville corridor: The patrol revealed that there was no significant tree and brush work needed. No significant erosion and sedimentation issues were observed.

• North Anna to Ladysmith corridor: The patrol revealed that there was no significant tree or brush work needed. No significant erosion and sedimentation issues were observed.

• North Anna to Midlothian corridor: Brush and tree work, which began in 2010, was on-going at the time this area was patrolled. All tree work was completed in February,2011.

Herbicide applications were performed in October,2011.

Herbicide application is scheduled to be completed in 2012.

No significant erosion and sedimentation issues were observed.

During all of the above-noted patrols and follow-up observations, no abnormal erosion conditions were observed on any of the above corridors associated with transmission line construction, modification, maintenance activities or the use of herbicides during 2011.

NON-COMPLIANCE (SECTION 5.4.1)

There were no non-compliances with the Environmental Protection Plan during 2011.

NON-ROUTINE REPORTS (SECTION 5.4.2)

There were four (4) five day notification letters submitted to the VA DEQ in 2011 for the following events:

On 08/23/2011, there was an un-authorized discharge of approximately 200-300 gallons of bearing cooling water from the bearing cooling basin to Lake Anna. The discharge was due to the loss of power to the Bearing Cooling System when both units Page 4 of 5

tripped due to the seismic event that day. The discharge did not negatively impact the lake, and no exceedance to the station's VPDES permit occurred. Bearing Cooling System water chemistry is maintained to ensure compliance with the VPDES permit discharge limits. There were no notices of violations or warning letters issued by the VA DEQ due to this event.

On 08/23/2012, there was a reportable oil spill from a transformer in the site switchyard. Approximately 30 to 40 gallons of non-PCB mineral oil was spilled when a transformer bushing shifted as a result the seismic event that day. The spill was immediately cleaned up after discovery, and the damaged transformer parts were replaced. None of the spilled oil was discharged to the lake or a storm drain. There were no notices of violations or warning letters issued by the VA DEQ due to this event.

On 08/24/2012, there was a reportable oil spill of approximately 150 gallons of lubrication oil while venting the main generator during the Unit 2 shutdown due to the seismic event. The spill was caused by leakage past the main generator lubrication oil seal. The oil spill was immediately cleaned up after discovery, and the ruptured seal was replaced. None of the oil spilled was discharged to the lake or a storm drain. There were no notices of violations or warning letters issued by the VA DEQ due to this event.

On 10/14/2011, there was an un-authorized discharge of approximately 272 gallons of bearing cooling water from the bearing cooling basin to Lake Anna. The overflow of the basin was due to incorrectly calibrated high level sensors which did not measure the correct level in the bearing cooling tower basin. A condition report was submitted, and the bearing cooling tower basin level sensors were re-calibrated. The discharge did not negatively impact the lake, and no exceedance to the station's VPDES permit occurred. Bearing Cooling System water chemistry is maintained to ensure compliance with the VPDES permit discharge limits. There were no notices of violations or warning letters issued by the VA DEQ due to this event.

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