ML032110016
| ML032110016 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 08/08/2003 |
| From: | Vissing G NRC/NRR/DLPM/LPD1 |
| To: | Vanderheyden G Calvert Cliffs |
| Vissing G, NRR/DLPM, 415-1441 | |
| References | |
| TAC MB6989, TAC MB6990 | |
| Download: ML032110016 (4) | |
Text
August 8, 2003 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, TECHNICAL SPECIFICATION CHANGE TO REMOVE THE CHARGING PUMPS FROM THE TECHNICAL SPECIFICATIONS (TAC NOS. MB6989 AND MB6990)
Dear Mr. Vanderheyden:
By letter dated December 13, 2002, Calvert Cliffs Nuclear Power Plant, Inc. (CCNPPI),
submitted a license amendment request to change the CCNPP, Unit Nos. 1 and 2 Technical Specifications (TSs). The proposed changes to CCNPP TS 3.5.2 would revise the TS to remove the requirements for the charging pumps. The proposal was based on an analysis that demonstrated that the charging pumps were not required to mitigate the consequences of a small-break loss-of-coolant accident. However, the charging pumps are the only components at CCNPP capable of injecting boron and coolant into the reactor vessel above the 80-percent power level or 1700 psi. CCNPPI has not addressed in its application the plant design dependence on the charging pumps to mitigate the consequences of an anticipated transient without scram and a steam generator tube break and, therefore, the Nuclear Regulatory Commission staff is not convinced that the charging pumps can be removed from the CCNPP TSs.
Enclosed is a request for additional information that the NRC staff requested in order to complete our review. We have discussed this with your staff and it was agreed 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
August 8, 2003 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, TECHNICAL SPECIFICATION CHANGE TO REMOVE THE CHARGING PUMPS FROM THE TECHNICAL SPECIFICATIONS (TAC NOS. MB6989 AND MB6990)
Dear Mr. Vanderheyden:
By letter dated December 13, 2002, Calvert Cliffs Nuclear Power Plant, Inc. (CCNPPI),
submitted a license amendment request to change the CCNPP, Unit Nos. 1 and 2 Technical Specifications (TSs). The proposed changes to CCNPP TS 3.5.2 would revise the TS to remove the requirements for the charging pumps. The proposal was based on an analysis that demonstrated that the charging pumps were not required to mitigate the consequences of a small-break loss-of-coolant accident. However, the charging pumps are the only components at CCNPP capable of injecting boron and coolant into the reactor vessel above the 80-percent power level or 1700 psi. CCNPPI has not addressed in its application the plant design dependence on the charging pumps to mitigate the consequences of an anticipated transient without scram and a steam generator tube break and, therefore, the Nuclear Regulatory Commission staff is not convinced that the charging pumps can be removed from the CCNPP TSs.
Enclosed is a request for additional information that the NRC staff requested in order to complete our review. We have discussed this with your staff and it was agreed 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 R. Laufer S. Little G. Vissing PDI-1 R/F OGC ACRS J. Jolicoeur ADAMS Accession Number: ML032110016 *Memo from SMagruder dated July 24, 2003 OFFICE PDI-1/PM PDI-1/LA NRR/DIPM/ASC PDI-1/SC NAME GVissing SLittle SMagruder*
PTam for RLaufer DATE 8/7/03 8/7/03 8/7/03 OFFICIAL RECORD COPY
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
Enclosure REQUEST FOR ADDITIONAL INFORMATION FOR CALVERT CLIFFS NUCLEAR POWER PLANT, INC.
TECHNICAL SPECIFICATION AMENDMENT REQUEST RELATED TO THE REMOVAL OF CHARGING PUMPS FROM THE TECHNICAL SPECIFICATIONS CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50-317 AND 50-318 The licensee proposed to remove the charging pumps from the Technical Specifications (TSs) because they have demonstrated that the charging pumps are not required for the small-break-loss-of-coolant accident. The charging pumps are the only components capable of injecting boron and coolant into the reactor vessel above the 80-percent power level or 1700 psi. In order to remove the charging pumps from the TSs, we request that you demonstrate that the plant can mitigate the consequences of accidents and transients such as anticipated transient without scram (ATWS) and steam generator tube rupture (SGTR), which require boron and coolant injection at power levels above 80 percent or pressure greater than 1700 psi without reliance on the charging pumps. If the charging pumps are required to mitigate the consequences of design-basis accidents and transients such as ATWS and a SGTR, then they satisfy the requirements of Criterion 3 of 10 CFR 50.36 for inclusion in the TSs.