ML040370327

Revisions of Cooldown Rates for Reactor Pressure Vessel Pressure Temperature Limits

ML040370327
Person / Time
Site:	Calvert Cliffs
Issue date:	02/03/2004
From:	Vanderheyden G Constellation Energy Group
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
TAC MB9472, TAC MB9473
Download: ML040370327 (2)

Text

George Vanderheyden 1650 Calvert Cliffs Parkway Vice President Lusby, Maryland 20657 Calvert Cliffs Nuclear Power Plant 410 495-4455 Constellation Generation Group, LLC 410 495-3500 Fax Constellation Energy Group February 3, 2004 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos. I & 2; Docket Nos. 50-317 & 50-318 Revisions of Cooldown Rates for Reactor Pressure Vessel Pressure Temperature Limits (TAC Nos. MB9472 and MB9473)

REFERENCES:

(a) Letter from Mr. G. S. Vissing (NRC) to Mr. G. Vanderheyden (CCNPP),

dated December 9, 2003, Revisions of Cooldown Rates for Reactor Pressure Vessel Pressure Temperature Limits (b) Letter from Mr. P. E. Katz (CCNPP) to Document Control Desk (NRC),

dated May 28, 2003, Revisions of Cooldown Rates for Reactor Pressure Vessel Pressure Temperature Limits (c) Letter from Mr. G. Vanderheyden (CCNPP) to Document Control Desk (NRC), dated November 25, 2003, Revisions of Cooldown Rates for Reactor Pressure Vessel Pressure Temperature Limits In reference (a), the Nuclear Regulatory Commission (NRC) granted approval of the change requested in Reference (b). This approval changed the cooldown rates for both Unit 1 and Unit 2. In Reference (c),

we requested an extended implementation period because the planning period needed to effectively implement this change for the 2004 refueling outage had passed. The goal of the extended implementation request was to allow implementation of this change after the 2004 refueling outage.

However, Reference (a) was issued on December 9, 2003 and the extended implementation ends before the start of the 2004 refueling outage. Therefore, we are requesting a modification to the amendment issued in Reference (a) to allow implementation of this change after the 2004 refueling outage. We are requesting an additional 120 days to implement this amendment.

We believe that this request is acceptable because, as noted in Reference (b), the existing cooldown rates are acceptable through the end of 2004.

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Document Control Desk February 3, 2004 Page 2 Should you have questions regarding this matter, we will be pleased to discuss them with you.

Very truly yours, or George Vanderheyden Vice President - Calvert Cliffs Nuclear Power Plant GV/PSF/bjd cc: J. Petro, Esquire H. J. Miller, NRC J. E. Silberg, Esquire Resident Inspector, NRC R. J. Laufer, NRC R. 1.McLean, DNR G. S. Vissing, NRC