ML071060039

NRC Receipt of Perry Nuclear Power Plant, Unit 1, Response to Generic Letter 2003-01 Control Room Habitability

ML071060039
Person / Time
Site:	Perry
Issue date:	05/03/2007
From:	Thomas Wengert NRC/NRR/ADRO/DORL/LPLIII-2
To:	Pearce L FirstEnergy Nuclear Operating Co
Wengert, Thomas NRR/DORL 415-4037
References
GL-03-001, TAC MB9839
Download: ML071060039 (5)

Text

May 3, 2007 Mr. L. W. Pearce Site Vice President FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant Mail Stop A-PY-A290 P.O. Box 97, 10 Center Road Perry, OH 44081-0097

SUBJECT:

NRC RECEIPT OF PERRY NUCLEAR POWER PLANT, UNIT NO. 1, RESPONSES TO GENERIC LETTER 2003-01, CONTROL ROOM HABITABILITY (TAC NO. MB9839)

Dear Mr. Pearce:

The Nuclear Regulatory Commission (NRC) acknowledges the receipt of your responses to Generic Letter (GL) 2003-01, Control Room Habitability, dated August 11, 2003 (Agencywide Documents and Access Management System (ADAMS) Accession No. ML032320295); May 30, 2006 (ADAMS Accession No. ML061580074); and March 20, 2007 (ADAMS Accession No. ML070860220) for the Perry Nuclear Power Plant (PNPP), Unit No. 1. This letter provides a status of your responses and describes any actions that may be necessary to consider your responses to GL 2003-01 complete.

The GL requested that you confirm that your control rooms meet their design bases (e.g.,

General Design Criteria (GDC) 1, 3, 4, 5, and 19, draft GDC, or principal design criteria), with special attention to: (1) determination of the most limiting unfiltered and/or filtered inleakage into the control room and comparison to values used in your design bases for meeting control room operator dose limits from accidents (GL 2003-01, Item 1a); (2) determination that the most limiting unfiltered inleakage is incorporated into your hazardous chemical assessments (GL 2003-01, Item 1b); and, (3) determination that reactor control capability is maintained in the control room or at the alternate shutdown location in the event of smoke (GL 2003-01, Item 1b).

GL 2003-01 further requested information on any compensatory measures in use to demonstrate control room habitability, and plans to retire them (GL 2003-01, Item 2).

By letter dated May 30, 2006, you reported the following results of the American Society for Testing and Materials E741, Standard Test Method for Determining Air Change in a Single Zone by Means of a Tracer Gas Dilution tracer gas tests for the PNPP control room, which is maintained at a neutral pressure and is not pressurized for accident mitigation:

You determined that the tested value for inleakage into the control room envelope (CRE), was 257 (+/- 15) cubic feet per minute (cfm), which is less than the value of 1375 cfm assumed in the current design basis radiological analyses for control room habitability (CRH).

You indicated that the CRH analyses for hazardous chemicals stored or transported onsite or near the plant do not credit isolation of the normal control room ventilation system. For

L. W. Pearce chemical calculations that require an assumption for unfiltered air inlet flow rate, the control room heating, ventilation, and air conditioning system intake flow rate assumed is much greater than the 1375 cfm unfiltered inleakage value in the loss of coolant accident radiological calculations. You stated that oxygen monitors alarm if carbon dioxide is released from the control room subfloor fire protection system. No other hazardous chemicals stored or transported onsite or near PNPP are considered a threat based on hazard evaluations performed per Regulatory Guide (RG) 1.78, Revision 0, Standard Review Plan NUREG-0800 Section 2.2.3, and NUREG/CR-2650, dated October 1982. You also indicated that reactor control capability is maintained from either the control room or the remote shutdown controls in the event of smoke.

GL 2003-01 further requested that you assess your technical specifications (TSs) to determine if you verify the integrity of the CRE, including ongoing verification of the inleakage assumed in the design-basis analysis for control room habitability, (GL 2003-01, Item 1c). In your May 30, 2006, response, you indicated that you do not have a TS surveillance requirement for CRE integrity and that you would evaluate the final version of TS Task Force Traveler No. 448 (TSTF-448), ?Control Room Habitability. You also stated that, based on the results of that evaluation, modifications to your TSs would be requested based on TSTF-448, or an appropriate alternative program would be implemented, including periodic tracer gas testing and control room integrity assessments. In your March 20, 2007, response you indicated that you would submit a license amendment request (LAR) to adopt TSTF-448. You further stated that you anticipated submitting the associated LAR in the third quarter of 2007.

The information you provided also supported the fact that there are no compensatory measures needed to be in place to demonstrate control room habitability.

The information you provided also supported the conclusion that you are committed to meet the GDC regarding control room habitability.

The information provided above, and your commitment to submit a LAR based on TSTF-448 is acceptable for purposes of closing out your responses to GL 2003-01.

If you have any questions regarding this correspondence, please contact me at (301) 415-4037.

Sincerely,

/RA/

Thomas J. Wengert, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-440 cc: See next page

ML071060039 NRR-106 OFFICE LPL3-2/PM LPL3-2/LA SCVB/BC PGCB/BC LPL3-2/BC NAME TWengert:mw EWhitt RDennig CJackson RGibbs DATE 4/23/2007 4/23/2007 5/1/2007 4/24/2007 5/3/2007 Perry Nuclear Power Plant, Unit 1 cc:

David W. Jenkins, Attorney Dennis Clum FirstEnergy Corporation Radiological Assistance Section Supervisor Mail Stop A-GO-18 Bureau of Radiation Protection 76 South Main Street Ohio Department of Health Akron, OH 44308 P.O. Box 118 Columbus, OH 43266-0118 Resident Inspector's Office U.S. Nuclear Regulatory Commission Zack A. Clayton P.O. Box 331 DERR Perry, OH 44081-0331 Ohio Environmental Protection Agency ATTN: Mr. Zack A. Clayton Regional Administrator, Region III P.O. Box 1049 U.S. Nuclear Regulatory Commission Columbus, OH 43266-0149 2443 Warrenville Road, Suite 210 Lisle, IL 60532-4531 Chairman Perry Township Board of Trustees Sue Hiatt 3750 Center Road, Box 65 OCRE Interim Representative Perry, OH 44081 8275 Munson Mentor, OH 44060 Daniel Z. Fisher Transportation Department Manager, Site Regulatory Compliance Public Utilities Commission FirstEnergy Nuclear Operating Company 180 East Broad Street Perry Nuclear Power Plant Columbus, OH 43215-3793 Mail Stop A-PY-A210 P.O. Box 97, 10 Center Road James H. Lash Perry, OH 44081-0097 Senior Vice President of Operations and Chief Operating Officer Mayor, Village of North Perry FirstEnergy Nuclear Operating Company North Perry Village Hall Mail Stop A-GO-14 4449 Lockwood Road 76 South Main Street North Perry Village, OH 44081 Akron, OH 44308 Donna Owens, Director Director, Fleet Regulatory Affairs Ohio Department of Commerce FirstEnergy Nuclear Operating Company Division of Industrial Compliance Mail Stop A-GO-2 Bureau of Operations & Maintenance 76 South Main Street 6606 Tussing Road Akron, OH 44308 P.O. Box 4009 Reynoldsburg, OH 43068-9009 Joseph J. Hagan President and Chief Nuclear Officer Carol OClaire, Chief, Radiological Branch FirstEnergy Nuclear Operating Company Ohio Emergency Management Agency Mail Stop A-GO-19 2855 West Dublin Granville Road 76 South Main Street Columbus, OH 43235-7150 Akron, OH 44308 Mayor, Village of Perry P.O. Box 100 Perry, OH 44081-0100

Perry Nuclear Power Plant, Unit 1 cc:

Danny L. Pace Senior Vice President, Fleet Engineering FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 76 South Main Street Akron, OH 44308 Jeannie M. Rinckel Vice President, Fleet Oversight FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 76 South Main Street Akron, OH 44308 Manager, Fleet Licensing FirstEnergy Nuclear Operating Company Mail Stop A-GO-2 76 South Main Street Akron, OH 44308 Richard Anderson Vice President, Nuclear Support FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 76 South Main Street Akron, OH 44308