ML11217A109

Emergency Response Data System Transition from Existing Modem to Virtual Private Networking Technology

ML11217A109
Person / Time
Site:	Calvert Cliffs
Issue date:	08/04/2011
From:	Fick M Calvert Cliffs, Constellation Energy Group, EDF Group
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML11217A109 (2)

Text

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• Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 CENG a joint venture of OEnergy Constellatin Vol%

eDF CALVERT CLIFFS NUCLEAR POWER PLANT August 4,2011 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos. 1 & 2; Docket Nos. 50-317 & 50-318 Emergency Response Data System Transition from Existing Modem to Virtual Private Networking Technology Pursuant to the requirements of 10 CFR Part 50, Appendix E, Section VI.3, "Maintaining Emergency Response Data System" Calvert Cliffs Nuclear Power Plant, LLC (Calvert Cliffs) is submitting this letter to inform the Nuclear Regulatory Commission (NRC) of changes to the Calvert Cliffs Emergency Response Data System (ERDS). These changes will involve transition from modem-based communications to virtual private network (VPN) technology.

The ERDS changes are scheduled to be implemented in 2011, pending coordinated testing and scheduling with the NRC ERDS Transition team. During implementation, the existing ERDS link will remain available and the ability to activate the existing ERDS link (if required) will not be affected.

This information is being provided to comply with 10 CFR Part 50, Appendix E, Section VI.3.b, which requires NRC notification at least 30 days prior to any ERDS hardware or software changes that could affect the transmission format and computer communication protocol.

This letter contains no new regulatory commitments.

Document Control Desk August 4, 2011 Page 2 Should you have questions regarding this matter, please contact me at (410) 495-5216 or Mr. Douglas E. Lauver at (410) 495-5219.

Very truly yours, for Michael J. Fick Director-Emergency Preparedness MJF/PSF/bjd cc: D. V. Pickett, NRC Resident Inspector, NRC W. M. Dean, NRC S. Gray, DNR