ML060540040

Surry, Units 1 and 2, RAI MC8315, Redefine the Exclusion Area Boundary

ML060540040
Person / Time
Site:	Surry
Issue date:	02/22/2006
From:	Monarque S R Plant Licensing Branch III-2
To:	Christian D A Virginia Electric & Power Co (VEPCO)
Monarque, S R, NRR/DORL, 415-1544
References
TAC MC8315, TAC MC8316
Download: ML060540040 (3)

Text

February 22, 2006Mr. David A. Christian Senior Vice President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711

SUBJECT:

SURRY POWER STATION, UNIT NOS. 1 AND 2 (SURRY 1 AND 2) -REQUEST FOR ADDITIONAL INFORMATION (RAI) ON PROPOSED TECHNICAL SPECIFICATION CHANGE TO REDEFINE THE EXCLUSIONAREA BOUNDARY (TAC NOS. MC8315 AND MC8316)

Dear Mr. Christian:

By letter dated September 13, 2005, Virginia Electric and Power Company (VEPCO) submitted proposed license amendments for Surry 1 and 2. These proposed changes would redefine the exclusion area boundary as the site boundary in Technical Specification 5.1, "Site." The Nuclear Regulatory Commission (NRC) staff is reviewing the submittal and has determined thatadditional information is required to complete its review. The NRC staff's RAI is enclosed. VEPCO is requested to provide a response to the RAI within45 days. Sincerely,/RA/ Stephen Monarque, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket Nos. 50-280 and 50-281

Enclosure:

RAI cc w/encl: See next page

ML060540040NRR-088OFFICENRR/LPL2-1/PMNRR/LPL2-1/LANRR/LPL2-1/BCNAMESMonarqueMO'BrienEMarinos DATE2/21/062/21/062/22/06 EnclosureREQUEST FOR ADDITIONAL INFORMATIONREDEFINITION OF THE EXCLUSION AREA BOUNDARYSURRY POWER STATION, UNIT NOS. 1 AND 2VIRGINIA ELECTRIC AND POWER COMPANYDOCKET NOS. 50-280 AND 50-281By letter dated September 13, 2005, Virginia Electric and Power Company (VEPCO) submitted proposed license amendments for Surry Power Station, Unit Nos. 1 and 2 (Surry 1 and 2).

These proposed changes would redefine the exclusion area boundary (EAB) as the site boundary in Technical Specification 5.1, "Site" at Surry 1 and 2. VEPCO is requested to respond to the following questions.1.The proposed redefinition of the Surry 1 and 2 EAB from an area bounded by a1650-foot radius centered at the Surry 1 reactor containment building to the siteboundary will change the shape and increase the size of the EAB from approximately0.79 square kilometers (196 acres) to 3.36 square kilometers (840 acres). Pursuant to Title10 of the Code of Federal Regulations (10 CFR) 100.11(a), the Surry Power Stationsite must have an exclusion area, which is defined in 10 CFR 100.3 as an area surrounding the reactor in which the reactor licensee has the authority to determine all activities, including the exclusion or removal of personnel and property from the area.

The exclusion area may be traversed by a highway (e.g., State Route 650), provided that it is not so close to the facility as to interfere with normal operations of the facilityand provided appropriate and effective arrangements are made to control traffic on the highway, in case of emergency, to protect the public health and safety. Consequently, please confirm the following for the proposed new and larger EAB:a.VEPCO has the authority to control activities within the revised EAB, including theexclusion and removal of personnel and property.b.VEPCO has total control over access to the revised EAB, except for the publicaccess on State Route 650 to the Hog Island State Wildlife Management Area.c.No activities unrelated to plant operations (other than transit through the area) arepermitted in the revised EAB without VEPCO's approval.d.State Route 650 is sufficiently distant from plant structures so that routine use ofthis route is not likely to interfere with normal plant operation.e.Provisions have been made for controlling traffic entering and leaving the revisedEAB on State Route 650 in the event of an emergency. Please also describe these provisions. 2.The EAB source-to-receptor distances listed in Table 1 of Attachment 1 to theSeptember 13, 2005, submittal are proposed to be used to define the EAB by wind direction sector for future dose analyses that may be accommodated under 10 CFR 50.59. The distances in this table represent the minimum distances from potential release points for the loss-of-coolant accident and fuel-handling accident ineach 22.5 wind direction sector. Regulatory Position C.1.2 of Regulatory Guide (RG)1.145, "Atmospheric Dispersion Models for Potential Accident Consequence Assessments at Nuclear Power Plants," states that for releases through vents orbuilding penetrations, the distances for EAB /Q calculations should be the minimumdistance from the nearest point on the building to the EAB within a 45 sector centeredon each of the 16 wind direction sectors. The RG 1.145 procedure takes into consideration the possibility of curved airflow trajectories, plume segmentation during low wind and stable conditions, and the potential for wind speed and wind direction frequency shifts from year to year. Please justify why the RG 1.145 methodology was not used to determine the Table 1 minimum distances from potential release points tothe EAB in each wind direction.

Surry Power Station, Units 1 & 2 cc:

Ms. Lillian M. Cuoco, Esq.Senior Counsel Dominion Resources Services, Inc.

Building 475, 5th Floor Rope Ferry Road Waterford, Connecticut 06385Mr. Donald E. JerniganSite Vice President Surry Power Station Virginia Electric and Power Company 5570 Hog Island Road Surry, Virginia 23883-0315Senior Resident InspectorSurry Power Station U. S. Nuclear Regulatory Commission 5850 Hog Island Road Surry, Virginia 23883ChairmanBoard of Supervisors of Surry County Surry County Courthouse Surry, Virginia 23683Dr. W. T. LoughVirginia State Corporation Commission Division of Energy Regulation Post Office Box 1197 Richmond, Virginia 23218Dr. Robert B. Stroube, MD, MPHState Health Commissioner Office of the Commissioner Virginia Department of Health Post Office Box 2448 Richmond, Virginia 23218Office of the Attorney GeneralCommonwealth of Virginia 900 East Main Street Richmond, Virginia 23219Mr. Chris L. Funderburk, DirectorNuclear Licensing & Operations Support Dominion Resources Services, Inc.

Innsbrook Technical Center 5000 Dominion Blvd.

Glen Allen, Virginia 23060-6711