Calvert Cliffs Nuclear Power Plant has a humble website at http://www.calvertcliffs.com.

The parent company, Constellation Energy Group has a website at http://www.constellationenergy.com

Sister company websites include Constellation Nuclear and Constellation Nuclear Services

NRC has a performance indicator and inspection finding matrix webpage for each plant. There are separate pages for Unit 1 and Unit 2

A variety of maps and satellite images of Calvert Cliffs plant and vicinity have been collected onto one page at cryptome2.org.

February 27, 2008

This is from the front page of today's The Examiner, of Baltimore, Maryland.

See full text of this story via the web version of this article.

February 3, 2008

This is from the front page of today's The Washington Post.

See full text of this story via the web version of this article (Washington Post requires free registration to view the article).

January 31, 2008

Constellation's options on whether to site first new EPR in Maryland or New York was front page news in both states today:

This is from the front page of today's The Sun, of Baltimore, Maryland.

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This is from the front page of today's The Post-Standard, of Syracuse, New York.

June 30, 2007

New this week from NRC Public Document Room

* [2007-06-30] Calvert Cliffs, Units 1 and 2, Notification of Extension of the Inservice Test Program Third Ten-Year Interval ML071720171 2007-06-20 3 05000317 05000318 NUREG-1482 TAC M98523 TAC M98524 TAC MB3782 TAC MB3783 TAC MC6208 TAC MC6209 2007-06-20 2007-06-29 James A. Spina Vice President constellaltionw Generation Group June 20,2007 Calvert Cliffs Nuclear Power Plant, Inc. 1650 Calvert Cliffs Pa

June 23, 2007

New this week from NRC Public Document Room

* [2007-06-22] IR 05000317-07-402 and 05000318-07-402; on 05/14/2007-05/18/2007; Calvert Cliffs Nuclear Power Plant, Units 1 and 2; Physical Protection ML071640302 2007-06-13 5 05000317 05000318 DPR-053 DPR-069 IR-07-402 2007-06-13 2007-06-21 SAFEGUARDS INFORMATION SAFEGUARDS INFORMATION June 13, 2007 Enclosure Contains Safeguards Information. When Separated from enclosure, this document is not Safeguards Information. Mr. James A

June 16, 2007

New this week from NRC Public Document Room

* [2007-06-16] 06/08/2007 ltr to Congressman Peter J. Visclosky re: providing an invitation to the Subcommittee on Energy and Water Development to a tour of Calvert Cliffs Nuclear Plant on Friday, July 27, 2007 ML071580925 2007-06-08 2 05000317 05000318 CORR-07-0093 2007-06-08 2007-06-15 ML071640019+ June 8, 2007 The Honorable Peter J. Visclosky Chairman, Subcommittee on Energy and Water Development Committee on Appropriations United States House of Representatives Washington, D.C. 20515

* [2007-06-16] Enclosure 1 - Calvert Cliffs: Safe and Secure by Design ML071640020 2007-05-31 2 05000317 05000318 CORR-07-0093 2007-05-31 2007-06-15 ML071640019+ Other national organizations hold Constellation Energy in high regard for the commitment to safe, secure operations demonstrated at Calvert Cliffs. The National Safety Council has honored Ca

* [2007-06-16] Enclosure 2 - Our Neighbor, Calvert Cliffs ML071640021 2007-05-31 2 05000317 05000318 CORR-07-0093 2007-05-31 2007-06-15 ML071640019+ As a community member Constellation Energy serves as one of the largest private employers in the county, providing about 1,000 jobs at Calvert Cliffs. The staff is dedicated to the community

* [2007-06-16] Enclosure 3 - Generating Reliable, Efficient Energy at Calvert Cliffs Nuclear Power Plant ML071640022 2007-05-31 2 05000317 05000318 CORR-07-0093 2007-05-31 2007-06-15 ML071640019+ All nuclear power plants rely on uranium fuel to make electricity. Uranium fuel pellets produce heat through a process called fission Ð the splitting of atoms in a chain reaction Ð inside a

* [2007-06-16] Enclosure 4 - Calvert Cliffs Nuclear Power Plant Earns a Place in History ML071640023 2007-05-31 1 05000317 05000318 CORR-07-0093 2007-05-31 2007-06-15 ML071640019+ Media Corporate Communications 1-888-232-1919 constellation.com In the early 1970s, Calvert Cliffs became the first nuclear power plant team in the U.S. to work through an Environmental Impa

* [2007-06-16] 06/08/2007 Ltr to Congressman Peter J. Visclosky re: providing an invitation to the Subcommittee on Energy and Water Development to a Tour of Calvert Cliffs Nuclear Plant on Friday, July 27, 2007 (with Enclosures 1 - 4) ML071640019 2007-06-15 ML071580925+ ML071640020+ ML071640021+ ML071640022+ ML071640023+ FNWEBNAVIGATE=1.0 SYSTEMTYPE=MEZZANINE DOCUMENTID=071640019 STARTPAGE=1 LIBRARYNAME= ML_adams^hqntad01

* [2007-06-15] Calvert Cliffs Nuclear Power Plant Unit No.1-Pressurizer Surge, Spray, Safety, And Relief Nozzle Weld Susceptibility To Primary Water Stress Corrosion Cracking (TAC No. MD4139) ML071340120 2007-06-06 4 05000317 DPR-053 tac md4139 2007-06-06 2007-06-14 June 6, 2007 Mr. J. A. Spina, Vice President Calvert Cliffs Nuclear Power Plant, Inc. Constellation Generation Group, LLC 1650 Calvert Cliffs Parkway Lusby, MD 20657 SUBJECT: CALVERT CLIFFS NUCLEAR POWER PL

* [2007-06-15] Calvert Cliffs, Units 1 and 2, Response to Request for Additional Information Supplemental to Notice of Intent for Barge Shipment of Reactor Vessel Closure Heads to RACE LLC in Memphis, TN ML071570376 2007-04-04 3 05000317 05000318 PHMSA-2006-23643 2007-04-04 2007-06-14 James A. Spina Calvert Cliffs Nuclear Power Plant, Inc. Vice President 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410.495.5200 410.495.3500 Fax 0 Constellation Energy4 Generation Group April 4

* [2007-06-12] Calvert Cliffs, Unit 2, Response to Confirmatory Action Letter from NRC, Dated March 12, 2007, and Notification of Results from Inspection and Mitigation of Alloy 600/82/182 Pressurizer Butt Welds ML071520179 2007-05-30 4 05000318 TAC MD4140 2007-05-30 2007-06-11 James A. Spina Vice President 0 Constellation Energy- Generation Group Calvert Cliffs Nuclear Power Plant, Inc. 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410.495.5200 410.495.3500 Fax May 30, 2007 U. S. Nuc

June 9, 2007

New this week from NRC Public Document Room

* [2007-06-09] Calvert Cliffs Units 1 and 2, Technical Specifications, Remove Charging Pumps from Emergency Core Cooling System Technical Specification (TS) 3.5.2, "ECCS - Operating" (TAC Nos. MB6989 and MB6990) ML071590181 2003-12-03 2 05000317 05000318 DPR-053 DPR-069 2003-12-03 2007-06-08 ML033300058+ ECCS - Operating 3.5.2 3.5 EMERGENCY CORE COOLING SYSTEM (ECCS) 3.5.2 ECCS - Operating LCO 3.5.2 APPLICABILITY: Two ECCS trains shall be OPERABLE. MODES I and 2, MODE 3 with pressurizer p

* [2007-06-09] LER 07-001-00 for Calvert Cliffs, Unit 2 re Channel C Linear Range Nuclear Instrument Inoperable During Startup ML071510204 2007-05-29 6 05000318 DPR-069 LER 07-001-00 2007-05-29 2007-06-08 Calvert Cliffs Nuclear Power Plant Constellation Generation Group, LLC 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 0 Constellation Energy May 29, 2007 U.S. Nuclear Regulatory Commission Washington,

* [2007-06-09] LER 06-005-01 for Calvert Cliffs, Units 1 and 2 Re: Startup Rate Trip Bypass Removal Function Below Setpoint ML071510200 2007-05-29 6 05000317 05000318 DPR-053 DPR-069 LER 06-005-01 2007-05-29 2007-06-08 Calvert Cliffs Nuclear Power Plant Constellation Generation Group, LLC 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 0 Constellation Energy May 29, 2007 U.S. Nuclear Regulatory Commi

* [2007-06-09] Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2, License Amendment, Issuance of Amendment, Re: Removal of Charging Pumps from the Emergency Core Cooling System Technical Specification (TS) 3.5.2, "ECCS - Operating (TAC Nos. MB6989 and MB6990) ML033300058 2007-06-08 ML031320507+ ML071590181+ FNWEBNAVIGATE=1.0 SYSTEMTYPE=MEZZANINE DOCUMENTID=033300058 STARTPAGE=1 LIBRARYNAME= ML_adams^hqntad01

* [2007-06-08] 05/22/2007, Attendance List for Calvert Cliffs Annual Assessment Meeting ML071500544 2007-05-22 1 05000317 05000318 2007-05-22 2007-06-07 ATTENDANCE CALVERT CLIFFS ANNUAL ASSESSMENT MEETING HOLIDAY INN EXPRESS PRINCE FREDERICK, MD MAY 22,2007 6:30 P.M.

* [2007-06-06] 05/22/2007 Summary of Annual Assessment Meeting with Constellation Energy, LLC ML071510012 2007-05-31 4 05000317 05000318 2007-05-31 2007-06-05 May 31, 2007 MEETING SUMMARY LICENSEE: CONSTELLATION ENERGY, LLC FACILITY: CALVERT CLIFFS NUCLEAR POWER PLANT, UNITS 1 and 2 SUBJECT: SUMMARY OF MAY 22, 2007, ANNUAL ASSESSMENT MEETING WITH CONSTELLATION ENERGY, LLC

June 2, 2007

New this week from NRC Public Document Room

* [2007-06-01] Calvert Cliffs Nuclear Power Plant Unit Nos. 1 & 2 - Response to Generic Letter 2003-01 "Control Room Habitability" (TAC Nos. MB9784 and MB9785) ML071310028 2007-05-24 4 05000317 05000318 DPR-053 DPR-069 GL-03-001 tac mb9784 TAC MB9785 2007-05-24 2007-05-31 May 24, 2007 Mr. James A. Spina, Vice President Calvert Cliffs Nuclear Power Plant, Inc. 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702 SUBJECT: CALVERT CLIFFS NUCLEA

* [2007-05-31] 05/22/2007 Licensee's Slides for Calvert Cliffs 2006 Annual Assessment Meeting ML071500166 2007-05-22 9 05000317 05000318 2007-05-22 2007-05-30 1 Calvert Cliffs Nuclear Power Plant Annual Assessment Meeting May 22, 2007 2 Overview ¥ Introductions ¥ Constellation Energy ¥ 2006 Performance ¥ 2007 Initiatives ¥ Closing Comments 3 Nuclear Energy Group Mike Walla

* [2007-05-31] Calvert Cliffs Nuclear Power Plant, Unit 2, Post-Accident Monitoring Report ML071410078 2007-05-17 3 05000318 2007-05-17 2007-05-30 Calvert Cliffs Nuclear Power Plant Constellation Generation Group, LLC 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 0 Constellation Energy May 17, 2007 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:

May 26, 2007

New this week from NRC Public Document Room

* [2007-05-23] Calvert Cliffs Units 1 & 2, Submittal of Emergency Core Cooling System Codes and Methods Report ML071340047 2007-05-09 16 05000317 05000318 2007-05-09 2007-05-22 I VI, James A. Spina Vice President 0Constellation Energy ¡ Generation Group Calvert Cliffs Nuclear Power Plant, Inc. 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410.495.5200 410.495.3500 Fax May 9, 2007 U. S.

* [2007-05-23] Calvert Cliffs, Nine Mile Point, R. E. Ginna, 90-Day Response to Generic Letter 2007-01, "Inaccessible or Underground Power Cable Failures that Disable Accident Mitigation Systems or Cause Plant Transients." ML071340045 2007-05-07 4 05000220 05000244 05000317 05000318 05000410 GL-07-001 2007-05-07 2007-05-22 J. M. Heffley Chief Nuclear Officer 0 Constellation Energy Generation Group Constellation Generation Group 1997 Annapolis Exchange Parkway Suite 310 Annapolis, MD 21401 410-897-50

May 19, 2007

New this week from NRC Public Document Room

* [2007-05-19] Calvert Cliffs Special Report: Noncompliance with Effluent Limitations. On 05/01/07, Plant Personnel Identified that 11 Waste Neutralizing Tank was Leaking at Rate of Approx. One Gallon Per Minute. ML071300385 2007-05-04 3 05000317 05000318 2007-05-04 2007-05-18 Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Constellation Generation Group, LLC Lusby, Maryland 20657 0 Constellation Energy May 4, 2007 Maryland Department of the Environment Water Management Admi

* [2007-05-16] Calvert Cliffs Nuclear Power Plant, License Amendment Request : Add LCO 3.0.9 on the Unavailability of Barriers Using the Consolidated Line Item Improvement Process. ML071270371 2007-05-02 8 05000317 05000318 2007-05-02 2007-05-15 James A. Spina Vice President 0 Constellation Energy- Generation Group Calvert Cliffs Nuclear Power Plant, Inc. 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410.495.5200 410.495.3500 Fax May 2, 2007 U. S. Nuclea

* [2007-05-16] Calvert Cliffs Revision to Generic Letter 2004-02 Response. ML071270372 2007-05-02 3 05000317 05000318 GL-04-002 TAC MC4672 2007-05-02 2007-05-15 James A. Spina Calvert Cliffs Nuclear Power Plant, Inc. Vice President 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410.495.5200 410.495.3500 Fax 0 Constellation Energy Generation Group May

* [2007-05-16] Press Release I-07-028 - NRC to Discuss 2006 Assessment for Calvert Cliffs Nuclear Plant. ML071350408 2007-05-15 2 05000317 05000318 Press Release-I-07-028 2007-05-15 2007-05-15 NRC NEWS U.S. NUCLEAR REGULATORY COMMISSION Office of Public Affairs, Region I 475 Allendale Road, King of Prussia, Pa. www.nrc.gov No. I-07-028 May 15, 2007 Contact: Diane Screnci, 610/337-533

* [2007-05-15] Annual Assessment Letter EOC 2006 - Calvert Cliffs Station (IR 05000317-07-001 and 05000318-07-001). ML070610618 2007-03-02 5 2007-03-02 2007-05-14

* [2007-05-15] IR 05000317-07-006, 05000318-07-006; 01/23/2007; Constellation Generation Group, LLC; 01/25/2007; Calvert Cliffs Nuclear Power Plant; Supplemental Inspection; IP 95001, "Inspection for One or Two White Inputs in a Strategic Performance Area." ML070610074 2007-02-28 11 2007-02-28 2007-05-14

* [2007-05-15] IR 05000317-07-008 and 07200008-07-008, on 01/8-12/2007 for Calvert Cliffs, Units 1 and 2, Evaluate and Review the Status of Corrective Actions Pertaining to an Improperly Seated Canister Shield Plug. ML070530101 2007-02-20 11 2007-02-20 2007-05-14

* [2007-05-15] 06/12/06 UniStar Nuclear, Calvert Cliffs, CCNPP USEPR Site Layout and Subsurface Investigation. ML070720254 2006-06-12 11 2006-06-12 2007-05-14

* [2007-05-15] Calvert Cliffs Nuclear Power Plant - Notification of Triennial Fire Protection Baseline Inspection. ML070710041 2007-03-09 5 2007-03-09 2007-05-14

* [2007-05-15] Calvert Cliffs Nuclear Power Plant, Core Operating Limits Report for Unit 2, Cycle 16, Revision 2. ML070580105 2007-02-23 26 2007-02-23 2007-05-14

* [2007-05-15] Calvert Cliffs Nuclear Power Plant, Unit No. 1-Flaw Evaluation Of Dissimilar Metal Welds (TAC No. MD2351). ML070430027 2007-03-16 4 2007-03-16 2007-05-14

* [2007-05-15] Calvert Cliffs Nuclear Power Plant-Request For Withholding Information From Public Disclosure Regarding Calvert Cliffs Nuclear Power Plant, Unit No.1 (TAC No. MD2351). ML070380445 2007-03-01 4 2007-03-01 2007-05-14

* [2007-05-15] Calvert Cliffs Unit 1, Temporary Exemption Request for Use of Lead Fuel Assemblies. ML070580103 2007-02-23 5 2007-02-23 2007-05-14

* [2007-05-15] Calvert Cliffs Units 1 & 2, Request for Additional Information Regarding Implementation for Alternative Source Term (TAC MC8845 and MC8846). ML070870110 2007-03-22 80 2007-03-22 2007-05-14

* [2007-05-15] Calvert Cliffs, Unit 1, License Amendment Request: Use of Lead Fuel Assemblies. ML070610414 2007-02-27 12 2007-02-27 2007-05-14

* [2007-05-15] Calvert Cliffs, Unit No. 1 - Letter of Intent to Irradiate Lead Fuel Assemblies Above the Current Maximum Burnup Limit. ML070580107 2007-02-23 10 2007-02-23 2007-05-14

* [2007-05-15] Calvert Cliffs, Unit No. 2 - Exemption from Requirements of 10 CFR 50.46, 10 CFR 50.44, and 10 CFR Part 50, Appendix K (TAC Nos. MB5648 and MB6065). ML030640137 2003-04-11 9 2003-04-11 2007-05-14

* [2007-05-15] Calvert Cliffs, Units 1 and 2 - Revision to the Emergency Response Data System. ML070640034 2007-02-28 10 2007-02-28 2007-05-14

* [2007-05-15] Calvert Cliffs, Units 1 and 2, License Amendment Request: Change to the Core Operating Limits Report Analytical Methods List. ML070610357 2007-02-27 11 2007-02-27 2007-05-14

* [2007-05-15] Confirmatory Action Letter, Calvert Cliffs Nuclear Power Plant, Unit 2 (TAC MD4140). ML070660040 2007-03-12 5 2007-03-12 2007-05-14

* [2007-05-15] LER 06-001-01 for Calvert Cliffs, Unit 2 Re: Reactor Trip During Performance of Maintenance Clearance Order. ML070580101 2007-02-23 6 2007-02-23 2007-05-14

* [2007-05-15] LER 06-004-00 for Calvert Cliffs Nuclear Power Plant, Unit 1 re Reactor Trip Due to Loose Wire During Maintenance on Turbine Control System. ML070470649 2007-02-12 5 2007-02-12 2007-05-14

* [2007-05-15] LER 06-005-00 for Calvert Cliffs re Startup Rate Trip Bypass Enabling Function Below Setpoint. ML070520454 2007-02-15 5 2007-02-15 2007-05-14

May 12, 2007

New this week from NRC Public Document Room

* [2007-05-12] 06/12-13/2006 Summary of Calvert Cliffs Site Visit Regarding Combined License Pre-Application Subsurface Investigation Activities. ML071020191 2007-05-03 5 PROJ0746 2007-05-03 2007-05-11 May 3, 2007 APPLICANT: Constellation Energy / UniStar Nuclear PROJECT: Project No. 746 SUBJECT: SUMMARY OF CALVERT CLIFFS SITE VISIT ON JUNE 12 - 13, 2006, REGARDING COMBINED LICENSE PRE-APPLICATION SUBSURFACE INVESTIGATION A

* [2007-05-12] Bulletin 2004-01, "Inspection Of Alloy 82/182/600 Materials Used In The Fabrication Of Pressurizer Penetrations And Steam Space Piping Connection At Pressurized-Water Reactors," (TAC Nos. MC3466 And MC3467). ML071130006 2007-05-04 5 05000317 05000318 DPR-053 DPR-069 BL-04-001 TAC MC3466 TAC MC3467 2007-05-04 2007-05-11 May 4, 2007 Mr. James A. Spina, Vice President Calvert Cliffs Nuclear Power Plant, Inc. Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4

* [2007-05-12] IR 05000317-07-002 and 05000318-07-002, on 03/31/2007, Calvert Cliffs, Units 1 and 2, Integrated Inspection Report. ML071270730 2007-05-07 53 05000317 05000318 DPR-053 DPR-069 IR-07-002 2007-05-07 2007-05-11 UNITED STATES NUCLEAR REGULATORY COMMISSION REGION I 475 ALLENDALE ROAD KING OF PRUSSIA, PENNSYLVANIA 19406-1415 May 7, 2007 Mr. James A. Spina, Vice President Calvert Cliffs Nuclear Power P

* [2007-05-11] Branch Chief Assignment - Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2. ML071090586 2007-05-03 3 05000317 05000318 DPR-053 DPR-069 2007-05-03 2007-05-10 May 3, 2007 Mr. James A. Spina, Vice President Calvert Cliffs Nuclear Power Plant, Inc. Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702 SUBJECT: BRANCH CHIEF ASSIGN

* [2007-05-09] 05/22/2007 Notice of Calvert Cliff Annual Assessment Meeting With Constellation Management. ML071280113 2007-05-08 4 05000317 05000318 MN 07-022 2007-05-08 2007-05-08 May 8, 2007 MN No. 07-022 U.S. NUCLEAR REGULATORY COMMISSION REGION I NOTICE OF LICENSEE MEETING Licensee: Constellation Energy Group, LLC Facility: Calvert Cliffs Nuclear Power Plant, Units 1 and 2 Docket

* [2007-05-09] Calvert Cliffs, Units 1 and 2, Technical Specifications 3.1 and 3.2, Appendix B, Reporting Related to National Pollutant Discharge Elimination System (NPDES) Permit. ML071200285 2007-04-25 112 05000317 05000318 02-DP-0187 2007-04-25 2007-05-08 Calvert Cliffs Nuclear Power Plant Constellation Generation Group, LLC 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 0 Constellation Energy April 25, 2007 U. S. Nuclear Regulatory Commission Washington

* [2007-05-08] 2006-7 Annual Assessment Meeting Slides for Calvert Cliffs. ML071270042 2007-05-07 21 05000317 05000318 2007-05-07 2007-05-07 NRC Annual Performance Assessment NRC Annual Performance Assessment of of Calvert Cliffs Calvert Cliffs 2006 Reactor Oversight Program 2006 Reactor Oversight Program 2 Purpose of TodayÕs Meeting The NRC will address

May 5, 2007

New this week from NRC Public Document Room

* [2007-05-05] Part 21 Interim Report, Dresser Investigation File No. 2007-02, Interim Reporting of a Potential Defect Involving Power Actuated Pressure Relief Valves Supplied to Calvert Cliffs, Fort Calhoun and Oconee Plants. ML071230090 2007-04-27 3 05000269 05000270 05000285 05000287 05000317 05000318 2007-04-27 2007-05-04 Consolidated April 27, 2007 Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555 Subject: Dresser, Pressure Relief Operation 1 OCFR Part 21 Interim Report

April 28, 2007

New this week from NRC Public Document Room

* [2007-04-27] Calvert Cliffs, Units 1 and 2, Nine Mile Point, Units 1 and 2 and R.E. Ginna, Biennial Report: Status of Decommissioning Funding Per 10 CFR 50.75(f)(1). ML071080262 2007-03-30 11 05000220 05000244 05000317 05000318 05000410 2007-03-30 2007-04-26 J. M. Heffley Chief Nuclear Officer Constellation Generation Group 1997 Annapolis Exchange Parkway Suite 310 Annapolis, MD 21401 410-897-5020 0 Constellation Energy@ Generation Group March

* [2007-04-25] Calvert Cliffs, Unit 2 - Emergency Response Data System. ML071060085 2007-04-10 4 05000318 2007-04-10 2007-04-24 Calvert Cliffs Nuclear Power Plant Constellation Generation Group, LLC 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 0 Constellation Energy April 10, 2007 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION

April 21, 2007

New this week from NRC Public Document Room

* [2007-04-21] Calvert Cliffs, Core Operating Limits Report for Unit 2, Cycle 17, Revision 1. ML071020034 2007-04-09 27 05000318 2007-04-09 2007-04-20 James A. Spina Vice President 0 Constellation Energy, Generation Group Calvert Cliffs Nuclear Power Plant, Inc. 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410.495.5200 410.495.3500 Fax April 9, 2007 U. S. Nuclear Regul

* [2007-04-17] NRC Receipt of Calvert Cliffs, Unit Nos. 1 and 2, Response to Generic Letter 2006-03, "Potentially Nonconforming HEMYC and MT Fire Barrier Configurations" (TAC Nos. MD1560 and MD1561). ML070880103 2007-04-09 3 05000317 05000318 DPR-053 DPR-069 GL-06-003 tac Md1560 TAC MD1561 2007-04-09 2007-04-16 April 9, 2007 Mr. James A. Spina, Vice President Calvert Cliffs Nuclear Power Plant, Inc. Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657

March 12, 2007

Control of PWSCC in pressurizer dissimilar metal butt welds containing Alloy 82/182 material

NRC issued Confirmatory Action Letter NRR-07-014 to agree with Calvert Cliffs-2 proposed follow-up of Oct 2006 finding of PWSCC in dissimilar metal (DM) welds on the pressurizer at Wolf Creek.

Recent NRC inspections

* (released Jan 28) Calvert Cliffs inspection report 50-317/2004-7

* (released March 17) Calvert Cliffs plant design team report 50-317-2004-2

* Calvert Cliffs report 50-317-2003-2

* Calvert Cliffs E-plan report 50-317-2003-4

* Calvert Cliffs report 50-317/2002-6

* 2005-05-21: Calvert Cliffs Site Pushed For New Nuclear Reactor
Amit R. Paley, Washington Post

December 31, 2004

Summary of Plant Status - Oct - Dec 2004

Unit 1 began the period at 100 percent reactor power and remained unchanged until October 6th when reactor power was reduced to approximately 95 percent to support condenser waterbox cleaning. Following the maintenance, reactor power was restored to 100 percent. Power was again reduced on October 12th, 13th, and 15th to approximately 95 percent to support additional condenser waterbox cleaning activities. Following each cleaning, reactor power was restored to 100 percent. On December 18th, reactor power was reduced to approximately 82 percent to support turbine control valve testing. Following completion of the testing, the unit was restored to 100 percent power and remained there the remainder of the period.

Unit 2 began the period at 100 percent power and remained unchanged until October 3rd when power was reduced to support condenser waterbox cleaning. Following the cleaning, power was restored to 100 percent. Power was again reduced on October 14th and 18th to approximately 94 percent to support additional condenser waterbox cleaning activities. On November 5th, power was reduced to 87 percent for main turbine control valve testing. Following the completion of testing, power was reduced to 65 percent to support maintenance on the 22 steam generator feedwater pump. Following completion of this maintenance, the unit was restored to 100 percent power and remained there the remainder of the period.

[Source: Mark A. Giles (NRC senior resident inspector) et al., Inspection conducted at Calvert Cliffs Nuclear Power Plant, October 1, 2004 - December 31, 2004, NRC Region I inspection report 50-317/2004-07, January 20, 2005]

March 24, 2004

* Calvert Cliffs-2 - Jan 24 reactor trip should have been classified as Unusual Event

March 22, 2004

* Calvert Cliffs-1 - reactor trip due to short or ground during chart recorder maintenance

September 17, 2003

'Part of nuclear security is not talking about it'

"Part of nuclear security is not talking about it," said Gene Gwiazdowski, director of security for a nuclear power plant in Calvert Cliffs, Md. Gwiazdowski said the less information that is available to the general public about security at the plants, the easier it is to protect the facilities.

Physical barriers such as steel cables, roadway blockades and several layers of fencing around nuclear power plants do the job, he said. But all of the preparation could be undermined if a plant worker provided classified information to terrorists.

He said guards at the 103 nuclear power plants in the United States undergo extensive background checks before being hired.

[Source: Crystal Bolner (Times-Picayune business writer), "TECHNOLOGY TAKES ON TERRORISM: Experts monitoring latest security devices at N.O. convention", The Times-Picayune (New Orleans), September 17, 2003]

Calvert Cliffs to add NUHOMS-32P cask to ISFSI license

Calvert Cliffs' ISFSI is presently licensed for use of the NUHOMS-24P model dry storage cask. The plant wants to use Transnuclear's newer, higher-capacity cask design, the NUHOMS-32P. Changes that can not be made under 10 CFR 72.48 are planned to be submitted in a license amendment request to NRC by December 31, 2003. The ability to load 32 bundles per cask instead of 24 will allow the plant to get by with loading three casks per year instead of four. Using fewer casks will, in turn, extend the useful life of the ISFSI by six years.

[Source: Stephen C. OÕConnor (SFPO project manager, NRC/NMSS), "Summary of September 17, 2003, meeting with Calvert Cliffs Nuclear Power Plant, Inc.", November 28, 2003] Note: a PDF copy of the NRC memo is available from NRC at: http://www.nrc.gov/reading-rm/adams/web-based.html, by entering accession number ML033350048.

* Spent fuel cask-related diagrams: NUHOMS-24P (Transnuclear, Inc.), plus Horizontal Storage Module and Transfer Cask

August 26, 2003

* Calvert Cliffs - containment sump strainer review

July 29, 2003

No need for 10-year checks of containment spray system anymore, sez Calvert Cliffs

Several other plants have been authorized by NRC to delete requirement for 10-year inspections of the containment spray system. Calvert Cliffs wants to do the same. The piping is stainless steel, so corrosion isn't considered a potential problem. The risk of blockage from boron deposits is minimized by drains, and the risk of foreign material entering the system during maintenance is minimized by the plant's Foreign Material Exclusion program. No other potential causes of blockage have been identified. [More]

June 2003 operations - both units ran at 100% power for the entire month of June, according to plant's monthly operating report (released by NRC on July 29).

June 18, 2003 - Calvert Cliffs - emergency siren test result tracking method has been inconsistent with NRC performance indicator expectations

April 8, 2003 - New NRC resident inspector is Joseph M. O'Hara II. He joins Senior Resident Inspector Fred Bower, and succeeds Leonard Cline, who is now the Senior Resident Inspector at FitzPatrick plant in Scriba, N.Y. O'Hara joined NRC in 2002 as a region-based inspector in the Division of Reactor Safety. He also worked as a project engineer in the Region I Division of Reactor Projects. Prior to joining the NRC, O'Hara worked at the Norfolk Naval Shipyard. O'Hara has a Bachelor's degree in marine engineering from the Massachusetts Maritime Academy and a Master's in engineering management from George Washington University. O'Hara, his wife and children reside in California, Md., where he's an assistant soccer coach in the St. Mary's Youth Soccer League. The Calvert Cliffs resident inspectors can be reached at 410/586-2626. [source: NRC press release]

April 4: July 2003 is latest target for reopening of Cove Point liquified natural gas terminal, according to Dominion spokesperson Dan Donovan. The 1-billion-cubic-foot/day capacity facility is expected to take in one to two ships a week through the end of the year, or around 30 cargoes between July and December. This slippage from May date reflects weather-related delays in construction of a new dock. The dock, located about a mile offshore, is a bit more remotely located than previous location. Coast Guard Lt. Dulani Woods told Natural Gas Week that since 1980 there has been a safety zone around the terminal of up to 200 yards when a carrier is docked. New proposals under consideration would increase the security zone to a 500-yard radius, he said. Incoming and outgoing LNG ships will be escorted up the Chesapeake Bay by a Coast Guard vessel. A similar rule is in effect for LNG ships that enter Boston Harbor destined for the Everett LNG terminal in Massachusetts. Meanwhile, the Coast Guard has finalized its "security zone" of 300 yards (into the bay) by 500 yards (along the coast) around the nearby Calvert Cliffs plant, effective March 31, to be marked by white bouys. The Coast Guard called the zone "urgently necessary for public safety and power plant security." Lt. Woods stressed that a vessel the size of an LNG carrier couldn't get very close to the Calvert Cliffs plant. "It's just too shallow," he said. The draught on a ship the size of an LNG tanker -- generally about 33 feet -- would prevent it from moving closer. [Sources: Madeline Jowdy (Energy Intelligence Group, Inc.), "War May Add Security Wrinkles To Cove Point's Spring Start-Up", Natural Gas Week, April 4, 2003; and Elizabeth A. Shack (Capital News Service), "Coast Guard creates security zone", The Capital (Annapolis), March 30, 2003 p. D2]

April 1: The Coast Guard's security measures for LNG tankers using the Cove Point facility include notification by incoming ship four days before reaching the Chesapeake Bay. The Coast Guard will cross-check the passenger and crew list with terrorist watch list. At Cape Henry, an armed Coast Guard team will inspect each vessel. After clearance is granted, a "moving safety/security zone" will be enforced around the ship, ensuring that no other vessels come near. Coast Guard Lt. Cmdr. Brendon McPherson told The Washington Post that the operation will continue until the tanker finishes unloading and returns to sea, representing "unprecedented" security measures. The Post reports that months before Sept. 11, 2001, residents told federal regulators that they feared that terrorists could commandeer a liquefied natural gas tanker. Should its massive storage tanks be breached, either by grounding or explosion, the gas would vaporize on contact with the air and could, if ignited, send a giant fireball hurtling toward the nuclear plant and their community. "We were afraid of terrorists before 9/11 -- and 9/11 came," said Mary Robinson, a Lusby resident whose home is within several miles of the Cove Point LNG plant... Robinson said that she is "feeling less secure, period." She, like many other Americans, no longer believes she is protected from "terrorism by the big Atlantic Ocean." "I feel that whatever happens will happen quickly and unpredictably," she said. [Source: Raymond McCaffrey (Washington Post Staff Writer), "Gas Tanker to Pass Within Miles Of Calvert Nuclear Power Plant; First Such Trip in 20 Years to Test Bay Anti-Terror Measures", The Washington Post, April 1, 2003, p. B7]

March 25: Sport fisherman have enthusiastic things to say about Calvert Cliffs these days. Here's some excerpts from angler's column in Washington Post: "Fishing, like most things, is all about timing. Usually you get it wrong but occasionally you get it right, which keeps you coming back. And once in a long while, with a bit of luck, you hit it perfectly. Australians call these "bottle days" -- the ones you want to put in a bottle and keep forever. Such a day was Tuesday. [We headed] down to Calvert Cliffs nuclear power plant, where big rockfish returning to the Chesapeake to spawn are likely to stop early in the spring to feed around the warm-water discharge pipe... The outfall comes churning out in 30 feet of water a few hundred yards offshore. My fancy electronics said it was only a degree warmer than the surrounding bay -- 48 degrees vs. 47. But that and the vigorous flow apparently were enough to attract rock, because we both had strikes very quickly..." He also noted the watchful presence of Maryland state DNR police boat and inspection-conducting Coast Guard crew in inflatable boat. [Source: Angus Phillips, "A Picture-Perfect Day on the Bay to Remember", The Washington Post, March 30, 2003, p. D3]

March 20: Calvert Cliffs plans to request exception to NRC's requirement for ultrasonic testing of vessel head penetration nozzles. A February 11 NRC order specifies testing each nozzle starting two inches above the J-groove weld and extending to the bottom of the nozzle. The configuration of the nozzles at Calvert Cliffs unit two apparently makes it quite a problem to obtain UT data near the J-groove welds. A request for relaxing the inspection requirements, from Turkey Point, was the first relaxation of the February 11 order to be approved by NRC. Nucleonics Week reports, however, that the Turkey Point particulars are quite different. Turkey Point proposed carrying out full inspections on all but nine nozzles. And on those nine, Turkey Point proposed inspecting to at least an inch below the weld." The story cited an unnamed NRC staffer who follows the issue closely as saying that the Turkey Point and Calvert Cliffs requests are "totally different animals". A key difference cited by the staffer is thaaat the Turkey Point request affects only non-pressure boundary portions of the nozzles. An NRC letter to Turkey Point last month included safety evaluation which noted the plant's "analysis which demonstrated that no flaw below that portion of the nozzle would propagate to a level adjacent to the J-groove weld within an 18-month operating period". The methodology used by Turkey Point for estimating crack growth rate was based on an EPRI report, which NRC is independently evaluating. NRC's approval to Turkey Point is contingent upon that evaluation. The NRC staffer reportedly told Nucleonics Week that the requirement to inspect to the bottom may be conservative, but that any request for relaxation must be justified by the requesting plant. [Source: Daniel Horner (McGraw-Hill, Washington), "NRC approves Turkey Point request for VHP inspection order relief", Nucleonics Week, March 27, 2003, p. 2]

February 14: Unit 2 started refueling and steam generator replacement project (SGRP) outage today. The unit 1 SGRP in 2002 took more than 100 days. Nuclear News reports that "for proprietary reasons, the plant's management is not commenting on when the unit is expected back on line." Bill Baines, engineering trainer at the plant, told Nuclear News that "the project does not replace the entire steam generator. Instead, we are using the containment equipment hatch for all moves, versus cutting a hole in the containment wall as some other utilities have done. For the replacement project, we are cutting the upper steam drum off of the old steam generators, setting them to the side, and then transporting the old lower steam generator assemblies out of the containment: As to the steam drum internals, they are being cut out of the steam drums ahead of time, with the drums to be set aside in the containment for installation of the new internals. The old lower assemblies will be lifted out and new ones brought in. Then the refurbished steam drums with internals will be welded back onto the new lower assemblies. The new steam drum internals, by the way, use a completely different design of moisture separators and steam dryers. Also, the moisture drain system is different." The trade magazine noted that specific information about this is proprietary under B&W's contract with Constellation Nuclear. [Source: Nuclear News, "The Nuclear News Interview", April 2003, p. 36]

Feb 13: The cold spell has dampened the winter sport fishing here in Maryland, except for ice fishing through the foot-thick cover at Deep Creek Lake and the rockfish action in the waters warmed by Calvert Cliffs [Ref: Bill Burton, "Take Stock in Better Days", The Capital (Annapolis), February 13, 2003].

Feb 13: Deer population on the plant site and elsewhere in Calvert County is cause for concern. Vehicle accidents related to deer on the roads have been increasing in recent years. A natural resource manager for Maryland's state Department of Natural Resources was quoted in today's Washington Post as saying that deer population "has been increasing to a level that is not compatible with the natural environment ... One a habitat becomes over-browsed by deer it is very difficult to restore the understory forest habitat that is utilized by many bird species." The manager, W. Daniel Esteves, also reportedly noted that heightened security at Calvert Cliffs has made it impossible to implement a deer management program there. [Ref: Michael Amon and Raymond McCaffrey (Washington Post staff writers), "Southern Maryland Notebook", The Washington Post, February 13, 2003, p. T02]

Jan 9: In a corporate efficiency initiative, Calvert Cliffs has eliminated 126 positions since November 2002. Another 45 jobs could be eliminated in the coming months, although no more full time employees will lose their jobs. Only six of the affected workers have obtained jobs elsewhere in the company. The cuts represent about 10% of the workforce, which stood at 1,111 back on September 1, 2002. Amongst those laid off was the recently reelected state legislator Del. Anthony J. O'Donnell. O'Donnell has worked at the plant for 15 years, first as an I&C technician and most recently in the Emergency Preparedness group. [Ref: Raymond McCaffrey and Colleen Jenkins (Washington Post staff writers), "Calvert Cliffs Cuts 126 Jobs in Streamlining Effort", Washington Post, January 9, 2003, p. T2; plus details and typical Washington Post rudeness in January 12 ("For State Delegate, Unemployment is a Personal Concern Now", p. C4) and Jan 19 (p. T2)]

2002

Dec 16: The planned replacement of the remaining steam generators at Calvert Cliffs in early 2003 was cited as the principal near term financial concern by Fitch Ratings. The schedule, Fitch figures, "exposes CEG to plant outages that could continue into the peak summer season." [Ref: Fitch Ratings press release, "Fitch Rates Constellation Energy Group's Senior Notes 'A-'", December 16, 2002]

Dec 9: License extension has immediate accounting effect on Calvert Cliffs. Spreading the decommissioning liability over longer period is a major factor in predicted after-tax gain of about $ 140-million for next year. Interest rates may be the key determinant in how big any gain actually is. [Ref: CEG 3rd quarter 10-Q filing with SEC].

Dec 5: 73 positions were eliminated at Calvert Cliffs last week, as Constellation Energy Group seeks "cost efficiency". Spokesperson didn't specify what positions were cut, but said that safety and security were off-limits. [Ref: Raymond McCaffrey and Michael Amon (Washington Post staff writers), "73 Calvert Cliffs Employees Told They Must Find New Jobs", The Washington Post, December 5, 2002, p. T2].

Oct 31: The top quartile production cost (TQPC) initiative at Calvert Cliffs was touted by CEG president Michael Wallace in teleconference with financial analysts today. The process improvement and engineering aspects of the program involves employees looking at ways to streamline processes, increase generation, and reduce fuel and O&M costs. The goal of TQPC is to place all of CEG's baseload plants in the top 25% of comparable plants for cost, production, reliability and safety.

Oct 31: With an eye on cracking the top quartile of INPO's liquid radwaste performance ratings, Calvert Cliffs has contracted with RWE Nukem for an advanced processing system. The system, called Alcon, is processing waste at the site now, for site-specific comparison testing. Similar systems have also been contracted for at Callaway, Palisades and Seabrook plants [Ref: "More Waste to Process for RWE Nukem", Nuclear Engineering International, Oct 31, 2002, p. 2].

Oct 10: This week, FERC approved restart of Cove Point LNG import facility, located about 4 miles from Calvert Cliffs. The facility is expected to be operational in a few months. Opponents included Sen. Mikulski (D-MD). The main argument against opening such a facility was the potential impact of an explosion on the nearby nuclear plant. Dominion Resources, which serves customers in Virginia, not Maryland, owns the Cove Point facility [Ref: Colin Sullivan (Greenwire staff writer), "FERC Acts On Southern RTO, Derivatives, Cove Point LNG Facility", Greenwire, October 10, 2002].

Sept 12: The last time Calvert Cliffs had a full emergency plan drill scheduled, it was cancelled because it was the same day as the events we know as "9/11".

Sept 12: Maryland has 80,000 residents eligible to receive two free potassium iodide pills by virtue of their proximity to commercial nuclear power plants. 75% of these live within 10 miles of Calvert Cliffs. The state has distributed about half of its federally-supplied pills so far [Ref: Raymond McCaffrey (Washington Post Staff Writer), "Counties Conduct Nuclear Plant Emergency Drill", September 12, 2002, p. T2].

Sept 10: NRC categorized the "silent sirens" violation as a "white level finding", which is the lowest severity rating they use. NRC regulations require plants to have the capability to warn the local population within 15 minutes. But most of the sirens could not be activated during the period August 14, 2001 through November 5, 2001. The problem was traced to someone deleting an icon on computers in a Maryland 911 center. The utility plans to set up a single system instead of relying on the three local government siren systems in the future. The project is budgeted at $2-million.