ML040860799
| ML040860799 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 03/26/2004 |
| From: | Vissing G NRC/NRR/DLPM/LPD1 |
| To: | Vanderheyden G Calvert Cliffs |
| Vissing G, NRR/DLPM, 415-1441 | |
| References | |
| TAC MC1578, TAC MC1579 | |
| Download: ML040860799 (5) | |
Text
March 26, 2004 Mr. George Vanderheyden, Vice President Calvert Cliffs Nuclear Power Plant, Inc.
Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702
SUBJECT:
CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 -
REQUEST FOR ADDITIONAL INFORMATION RE: PROPOSED AMENDMENT TO INCREASE THE SETPOINT OF THE MAIN STEAM SAFETY VALVES (TAC NOS. MC1578 AND MC1579)
Dear Mr. Vanderheyden:
In reviewing your submittal of December 9, 2003, concerning the subject proposed amendment, the Nuclear Regulatory Commission (NRC) staff determined that it needs additional information to continue its review. The NRC staff discussed the issue with your staff on March 4, 2004. As we indicated during our conversation, we are enclosing the request for additional information. You have indicated that you could respond within 45 days from receipt of this letter.
Sincerely,
/RA/
Guy S. Vissing, Senior Project Manager, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-317 and 50-318
Enclosure:
As stated cc w/encl: See next page
March 26, 2004 Mr. George Vanderheyden, Vice President Calvert Cliffs Nuclear Power Plant, Inc.
Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702
SUBJECT:
CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 -
REQUEST FOR ADDITIONAL INFORMATION RE: PROPOSED AMENDMENT TO INCREASE THE SETPOINT OF THE MAIN STEAM SAFETY VALVES (TAC NOS. MC1578 AND MC1579)
Dear Mr. Vanderheyden:
In reviewing your submittal of December 9, 2003, concerning the subject proposed amendment, the Nuclear Regulatory Commission (NRC) staff determined that it needs additional information to continue its review. The NRC staff discussed the issue with your staff on March 4, 2004. As we indicated during our conversation, we are enclosing the request for additional information. You have indicated that you could respond within 45 days from receipt of this letter.
Sincerely,
/RA/
Guy S. Vissing, Senior Project Manager, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-317 and 50-318
Enclosure:
As stated cc w/encl: See next page DISTRIBUTION:
PUBLIC RLaufer OGC SSun PDI-1 R/F AHowe GVissing SLittle Accession Number: ML040860799 OFFICE PDI-1/PM PDI-1/LA SRXB/SC PDI-1/SC NAME GVissing SLittle JUhle RLAufer DATE 03/22/04 03/17/04 03/22/04 03/23/04 OFFICIAL RECORD COPY
Enclosure REQUEST FOR ADDITIONAL INFORMATION CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 REGARDING THE PROPOSED AMENDMENT TO INCREASE THE SETPOINT OF THE MAIN STEAM SAFETY VALVES 1.
In support of the Technical Specification (TS) changes, the licensee reanalyzed several events to determine the effects of the revised main steam safety valve (MSSV) setpoints on the analysis of record. Please provide the following information for the staff to review:
(1)
Discuss the methods and computer codes used in the reanalysis and address their acceptability for the licensing application.
(2)
Identify for the reanalyzed events the values of input parameters that are different from those assumed in the analysis of record, and justify the adequacy of the values.
(3)
Provide a table listing for each reanalyzed case, the calculated peak pressurizer pressure, peak steam generator pressure and peak pressurizer water level, and demonstrate that the applicable acceptable criteria are met.
2.
The purpose of the high power level trip listed in TS Table 3.7.1-1 is to provide overpressure protection with various numbers of operable MSSVs. Justify that the high power trip setpoints remain valid in light of the proposed changes to the MSSV sepoints.
- 3.
Verify the edition of the Code that is being referenced for the Section III repairs and non-destructive examination.
Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 cc:
President Calvert County Board of Commissioners 175 Main Street Prince Frederick, MD 20678 James M. Petro, Esquire Counsel Constellation Energy Group, Inc.
750 East Pratt Street, 5th floor Baltimore, MD 21202 Jay E. Silberg, Esquire Shaw, Pittman, Potts, and Trowbridge 2300 N Street, NW Washington, DC 20037 Mark Geckle 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. Richard I. McLean, Manager Nuclear Programs Power Plant Research Program Maryland Dept. of Natural Resources Tawes State Office Building, B3 Annapolis, MD 21401 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Kristen A. Burger, Esquire Maryland Peoples Counsel 6 St. Paul Centre Suite 2102 Baltimore, MD 21202-1631 Patricia T. Birnie, Esquire Co-Director Maryland Safe Energy Coalition P.O. Box 33111 Baltimore, MD 21218 Mr. Loren F. Donatell NRC Technical Training Center 5700 Brainerd Road Chattanooga, TN 37411-4017