ML073620418
| ML073620418 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 01/08/2008 |
| From: | Pickett D NRC/NRR/ADRO/DORL/LPLI-1 |
| To: | Spina J Calvert Cliffs |
| Pickett D, NRR/DORL, 415-1364 | |
| References | |
| TAC MD5928, TAC MD5929 | |
| Download: ML073620418 (4) | |
Text
January 8, 2008 Mr. James A. Spina, Vice President Calvert Cliffs Nuclear Power Plant, Inc.
Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION RE: CONTROL ROOM HABITABILITY - CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 (TAC NOS. MD5928 AND MD5929)
Dear Mr. Spina:
By letter dated June 29, 2007, Calvert Cliffs Nuclear Power Plant, Inc. requested a license amendment to Renewed Operating License Nos. DPR-53 and DPR-69 to modify Technical Specification requirements for the control room emergency ventilation system in accordance with Technical Specification Task Force-448, Control Room Habitability, Revision 3, for the Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2.
The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided and has determined that additional information is needed to complete its review. Enclosed is the NRC staffs request for additional information (RAI). As discussed with your staff, we understand that you intend to respond to this RAI within 60 days of receipt of this letter.
Please contact me at 301-415-1364 if you have any questions.
Sincerely,
/RA/
Douglas V. Pickett, Senior Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-317 and 50-318
Enclosure:
As stated cc w/encl: See next page
ML073620418 OFFICE PM/LPL1-1 LA:LPL1-1 BC/SCVB BC/LPL1-1 NAME DPickett SLittle RDennig MKowal DATE 1/03/08 1/03/08 1/8/08 1/8/08
Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 cc:
Mr. Michael J. Wallace, President Constellation Energy Nuclear Group, LLC 750 East Pratt Street, 18th Floor Baltimore, MD 21202 Mr. John M. Heffley, Senior Vice President and Chief Nuclear Officer Constellation Energy Nuclear Generation Group 111 Market Place Baltimore, MD 21202 President Calvert County Board of Commissioners 175 Main Street Prince Frederick, MD 20678 Mr. Carey Fleming, Esquire Sr. Counsel - Nuclear Generation Constellation Energy Nuclear Group, LLC 750 East Pratt Street, 17th floor Baltimore, MD 21202 Mr. Jay S. Gaines Director, Licensing Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702 Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 287 St. Leonard, MD 20685 Mr. R. I. McLean, Manager Nuclear Programs Power Plant Research Program Maryland Department of Natural Resources 580 Taylor Avenue (B wing, 3rd floor)
Tawes State Office Building Annapolis, MD 21401 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Ms. Kristen A. Burger, Esquire Maryland People's Counsel 6 St. Paul Centre Suite 2102 Baltimore, MD 21202-1631 Ms. Patricia T. Birnie, Esquire Co-Director Maryland Safe Energy Coalition P.O. Box 33111 Baltimore, MD 21218 Mr. Roy Hickok NRC Technical Training Center 5700 Brainerd Road Chattanooga, TN 37411-4017 Mr. Louis S. Larragoite Manager - Nuclear Licensing Constellation Energy Nuclear Generation Group 111 Market Place, 2nd Floor Baltimore, MD 21202
Enclosure REQUEST FOR ADDITIONAL INFORMATION CONTROL ROOM HABITABILITY TSTF-448 CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50-317 AND 50-318 Technical Specification Task Force (TSTF) TSTF-448, Revision 3, Control Room Habitability, was developed for plants with pressurized control room envelopes (CREs). The Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2, have non-pressurized CREs. Note that the programs and manuals section of the standard technical specifications (STS), as modified by TSTF-448, Revision 3, paragraph (d) of Section 5.5.18, Control Room Envelope Habitability Program, specifies a differential pressure (dp) test to be conducted between performances of inleakage testing for the purpose of providing input to a periodic assessment of the CRE boundary. The NRC staff recognizes that non-pressurized CREs may not be able to conduct a dp test.
However, the staff believes that all plants requesting the adoption of TSTF-448 should include a method to collect data that will serve as input to a periodic assessment of the CRE boundary.
This position is supported by the technical analysis section of TSTF-448, Revision 3, on page 8 where an explanation of the basis for paragraph (d) is provided. Consequently, the NRC staff is requesting that you provide a method to collect data, and an explanation of how you intend to use it to periodically assess the integrity of your CRE boundary. The method should, to the extent practicable, provide information that can be used in a manner similar to the manner in which the information is to be used that is requested by paragraph (d) of Section 5.5.18 of the programs and manuals section of the STS as modified by TSTF-448, Revision 3.