ML042020196
| ML042020196 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 07/22/2004 |
| From: | Clark R NRC/NRR/DLPM/LPD1 |
| To: | Korsnick M Ginna |
| Clark R, NRR/DLPM, 415-2297 | |
| References | |
| TAC MB9123 | |
| Download: ML042020196 (4) | |
Text
July 22, 2004 Mrs. Mary G. Korsnick Vice President R.E. Ginna Nuclear Power Plant R.E. Ginna Nuclear Power Plant, LLC 1503 Lake Road Ontario, NY 14519
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING R. E. GINNA NUCLEAR POWER PLANT LICENSE AMENDMENT REQUEST RELATING TO THE CONTROL ROOM EMERGENCY AIR TREATMENT SYSTEM MODIFICATION (TAC NO. MB9123)
Dear Mrs. Korsnick:
By letter dated May 21, 2003, as supplemented on December 1, 2003, (two letters),
February 16, 2004, March 1, 2004, and May 21, 2004, Rochester Gas & Electric Corporation, now R. E. Ginna Nuclear Power Plant, LLC, submitted a request to revise the Ginna Technical Specifications to reflect design modifications to the Control Room Emergency Air Treatment System, and elimination of the requirements for the Containment Post Accident Charcoal Filters. The proposed design modifications are based on the use of the alternate source term.
The Nuclear Regulatory Commission (NRC) staff has reviewed the information and based on our review, we have determined that additional information is required in order for the staff to complete its review. Enclosed is the NRC staffs request for additional information (RAI). This RAI was discussed with your staff on July 15, 2004, and it was agreed that your response would be provided 30 days from the date of this letter.
Sincerely,
/RA/
Robert Clark, Project Manager, Section 1 Project Directorate 1 Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-244
Enclosure:
RAI cc w/encl: See next page
July 22, 2004 Mrs. Mary G. Korsnick Vice President R.E. Ginna Nuclear Power Plant R.E. Ginna Nuclear Power Plant, LLC 1503 Lake Road Ontario, NY 14519
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING R. E. GINNA NUCLEAR POWER PLANT LICENSE AMENDMENT REQUEST RELATING TO THE CONTROL ROOM EMERGENCY AIR TREATMENT SYSTEM MODIFICATION (TAC NO. MB9123)
Dear Mrs. Korsnick:
By letter dated May 21, 2003, as supplemented on December 1, 2003, (two letters),
February 16, 2004, March 1, 2004, and May 21, 2004, Rochester Gas & Electric Corporation, now R. E. Ginna Nuclear Power Plant, LLC, submitted a request to revise the Ginna Technical Specifications to reflect design modifications to the Control Room Emergency Air Treatment System, and elimination of the requirements for the Containment Post Accident Charcoal Filters. The proposed design modifications are based on the use of the alternate source term.
The Nuclear Regulatory Commission (NRC) staff has reviewed the information and based on our review, we have determined that additional information is required in order for the staff to complete its review. Enclosed is the NRC staffs request for additional information (RAI). This RAI was discussed with your staff on July 15, 2004, and it was agreed that your response would be provided 30 days from the date of this letter.
Sincerely,
/RA/
Robert Clark, Project Manager, Section 1 Project Directorate 1 Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-244
Enclosure:
RAI cc w/encl: See next page DISTRIBUTION:
PUBLIC PDI-1 R/F RLaufer SLittle RClark ACRS OGC JLee HWalker DFrumkin SWeerakkody CBixler, R1 Accession Number: ML042020196 OFFICE PDI-1/PM SPSB-B/SC PDI-1/SC NAME RClark SWeerakkody RLaufer DATE 07/21/04 07/16/04 07/22/04 OFFICIAL RECORD COPY
R.E. Ginna Nuclear Power Plant cc:
Mr. Michael J. Wallace President R.E. Ginna Nuclear Power Plant, LLC c/o Constellation Energy 750 East Pratt Street Baltimore, MD 21202 Mr. John M. Heffley Senior Vice President and Chief Nuclear Officer Constellation Generation Group 1997 Annapolis Exchange Parkway Suite 500 Annapolis, MD 21401 R.E. Ginna Senior Resident Inspector U.S. Nuclear Regulatory Commission 1503 Lake Road Ontario, NY 14519 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Peter R. Smith, President New York State Energy, Research, and Development Authority 17 Columbia Circle Albany, NY 12203-6399 James M. Petro, r., Esquire Counsel Constellation Energy 750 East Pratt Street, 5th Floor Baltimore, MD 21202 Charles Donaldson, Esquire Assistant Attorney General New York Department of Law 120 Broadway New York, NY 10271 Daniel F. Stenger Ballard Spahr Andrews & Ingersoll, LLP 601 13th Street, N.W., Suite 1000 South Washington, DC 20005 Ms. Thelma Wideman, Director Wayne County Emergency Management Office Wayne County Emergency Operations Center 7336 Route 31 Lyons, NY 14489 Ms. Mary Louise Meisenzahl Administrator, Monroe County Office of Emergency Preparedness 1190 Scottsville Road, Suite 200 Rochester, NY 14624 Mr. Paul Eddy New York State Department of Public Service 3 Empire State Plaza, 10th Floor Albany, NY 12223
Enclosure REQUEST FOR ADDITIONAL INFORMATION R. E. GINNA NUCLEAR POWER PLANT CONTROL ROOM EMERGENCY AIR TREATMENT SYSTEM R. E. Ginna Nuclear Power Plant, LLC proposed design modifications to the Control Room Emergency Air Treatment System, the Control Room Emergency Cooling System, and the Containment Post Accident Charcoal Filters are based on the full scope implementation of the alternate source term. The Nuclear Regulatory Commission staff has reviewed the license amendment request and has determined that the following additional information is needed.
1.
Isolation Dampers Isolation dampers with minimal leakage are installed in the charcoal units. In the event of a fire or over heating of the charcoal filters how are the isolation dampers closed (automatically, manually)? How will the dampers be affected by fire or high temperatures (for example are they expected to leak or deform, will this create a path for combustion products to enter the control room)? How will the isolation dampers or other plant features prevent an unmitigated fire from causing smoke to enter the control room and therefore creating a challenge to plant operation?
2.
Fire Detection Instrumentation Will the relay room annex detection system annunciate to a constantly attended location?
3.
Charcoal Filiter Bank Fire Suppression System The new charcoal filter banks, which are the major combustible in the area of concern, will be protected by manually actuated deluge systems with spray heads mounted inside the filter housings. The NRC staffs position on this issue, as outlined in Section 4.10 of RG 1.52 is that when a water-based fire suppression or prevention system is installed in the charcoal filter housing, the fire system should be manually actuated unless there is a reasonable probability that the iodine desorption and adsorbent auto-ignition could occur in the housing, in which case the fire system should have both automatic and manual actuation. Section 4.10 of RG 1.52 further states that, the fire system should be hard piped.
Therefore, we request that you demonstrate that there is not a reasonable probability that the iodine desorption and adsorbent auto-ignition could occur in the housing. One example of an acceptable way of demonstrating this is to provide the results of your calculations that demonstrate that the highest possible temperature that could occur in the vicinity of the charcoal (including the temperature rise associated with radioactivity-induced heat in the charcoal), as a result of a design-basis accident, is lower than the iodine desorption and adsorbent auto-ignition temperature of the adsorbent. Also, we request that you demonstrate that based on Ginnas specific configuration that the arrangement of the hose connection is a reasonable substitute for hard piping of the fire protection system.