ML052210320

RAI, Positive Reactivity Additions

ML052210320
Person / Time
Site:	Calvert Cliffs
Issue date:	08/19/2005
From:	Milano P NRC/NRR/DLPM/LPD1
To:	Vanderheyden G Calvert Cliffs
Milano P, NRR/DLPM 415-1457
References
TAC MC7328, TAC MC7329
Download: ML052210320 (4)

Text

August 19, 2005 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:

REQUEST FOR ADDITIONAL INFORMATION REGARDING REQUIREMENTS RELATED TO POSITIVE REACTIVITY ADDITIONS, CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 (TAC NOS. MC7328 AND MC7329)

Dear Mr. Vanderheyden:

In a letter dated June 7, 2005, Calvert Cliffs Nuclear Power Plant, Inc. (CCNPP) requested an amendment to Technical Specification 3.1.1, Shutdown Margin, to modify a positive reactivity addition restriction. The proposed amendment would also correct an administrative error in Limiting Condition for Operation (LCO) 3.4.17, Special Test Exception (STE) [Reactor Coolant System] Loops - Modes 4 and 5. Specifically, the reference to LCO 3.9.1 in LCO 3.4.17.b would be changed to LCO 3.1.1.

The Nuclear Regulatory Commission staff has reviewed the information supporting the proposed amendment and has determined that additional information is required in order for the staff to complete its review. The specific questions are found in the enclosed request for additional information (RAI). During a telephone call on August 11, 2005, the CCNPP staff indicated that a response to the RAI would be provided within 45 days.

Please contact me at (301) 415-1457 if you have any questions on this issue.

Sincerely,

/RA/

Patrick D. Milano, Sr. 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:

RAI cc w/encl: See next page

August 19, 2005 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:

REQUEST FOR ADDITIONAL INFORMATION REGARDING REQUIREMENTS RELATED TO POSITIVE REACTIVITY ADDITIONS, CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 (TAC NOS. MC7328 AND MC7329)

Dear Mr. Vanderheyden:

In a letter dated June 7, 2005, Calvert Cliffs Nuclear Power Plant, Inc. (CCNPP) requested an amendment to Technical Specification 3.1.1, Shutdown Margin, to modify a positive reactivity addition restriction. The proposed amendment would also correct an administrative error in Limiting Condition for Operation (LCO) 3.4.17, Special Test Exception (STE) [Reactor Coolant System] Loops - Modes 4 and 5. Specifically, the reference to LCO 3.9.1 in LCO 3.4.17.b would be changed to LCO 3.1.1.

The Nuclear Regulatory Commission staff has reviewed the information supporting the proposed amendment and has determined that additional information is required in order for the staff to complete its review. The specific questions are found in the enclosed request for additional information (RAI). During a telephone call on August 11, 2005, the CCNPP staff indicated that a response to the RAI would be provided within 45 days.

Please contact me at (301) 415-1457 if you have any questions on this issue.

Sincerely,

/RA/

Patrick D. Milano, Sr. 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:

RAI cc w/encl: See next page DISTRIBUTION:

PUBLIC R. Laufer P. Milano OGC PDI-1 Reading File J. Nakoski S. Little ACRS DLPM DPR Y. Hsii J. Trapp, R-I Accession Number: ML052210320 OFFICE PDI-1/PM SRXB/SC PDI-1/LA PDI-1/SC NAME PMilano JNakoski SLittle RLaufer DATE 08/10/05 08/17/05 08/18/05 08/19/05 OFFICIAL RECORD COPY

Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 cc:

President Maryland Safe Energy Coalition Calvert County Board of P.O. Box 33111 Commissioners Baltimore, MD 21218 175 Main Street Prince Frederick, MD 20678 Mr. Loren F. Donatell NRC Technical Training Center Carey Fleming, Esquire 5700 Brainerd Road Sr. Counsel - Nuclear Generation Chattanooga, TN 37411-4017 Constellation Generation Group, LLC 750 East Pratt Street, 17th floor Baltimore, MD 21202 Lou Larragoite 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, Administrator Radioecology Environ Impact Prog Department of Natural Resources Nuclear Evaluations 580 Taylor Avenue Tawes State Office Building 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 People's Counsel 6 St. Paul Centre Suite 2102 Baltimore, MD 21202-1631 Patricia T. Birnie, Esquire Co-Director

REQUEST FOR ADDITIONAL INFORMATION REGARDING POSITIVE REACTIVITY ADDITION RESTRICTION CALVERT CLIFFS NUCLEAR POWER PLANT, INC.

CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50-317 AND 50-318 In a letter dated June 7, 2005, Calvert Cliffs Nuclear Power Plant, Inc. (the licensee) requested a change to Technical Specification (TS) 3.1.1, Shutdown Margin, to modify a Required Action B.1 in Limiting Condition for Operation (LCO) when the reactor coolant system (RCS) is at or below the bottom of the hot leg nozzles. The proposed amendment would also correct an administrative error in LCO 3.4.17, Special Test Exception (STE) RCS [Reactor Coolant System] Loops - Modes 4 and 5. Specifically, the reference to LCO 3.9.1 in LCO 3.4.17.b would be changed to LCO 3.1.1. The Nuclear Regulatory Commission staff requests the following information:

LCO 3.4.17.b states that:

No operations are permitted which could cause introduction of coolant into the RCS with boron concentration less than that required to meet the minimum boron concentration of LCO 3.9.1 The licensee proposed to change the reference from LCO 3.9.1 to LCO 3.1.1, which indicates it as being an administrative error related to a previous license amendment request dated July 29, 2003. LCO 3.4.17 specifies conditions for the STE for RCS loops during Modes 4 and 5 operation, and LCO 3.9.1 specifies boron concentration requirements for refueling operations (Mode 6). Therefore, the licensee states that it is appropriate to reference LCO 3.1.1 since it specifies the shutdown margin requirements for Modes 3, 4, and 5.

However, although LCO 3.1.1 provides implicit minimum boron concentration requirements through the shutdown margin requirements, this LCO does not explicitly specify the minimum boron concentration.

LCO 3.4.17.b should be revised to provide the minimum boron concentration for LCO 3.1.1.

Enclosure