ML090780272

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Transition to Areva Fuel Meeting
ML090780272
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 03/19/2009
From:
AREVA, Constellation Energy Group
To:
Office of Nuclear Reactor Regulation
Pickett D
References
Download: ML090780272 (14)
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Text

Constellation Energy*

A AREVA Calvert Cliffs Transition to AREVA Fuel The way energy works~~

NRC Meeting - White Flint March 19, 2009 Non-Proprietary 1

Constellation Energy Non-Proprietary Thewayenergy works~*

Introductions

The following Constellation and AREVA personnel are attending todays meeting in support of the presentation and discussions.

Constellation Kevin Nietmann - Project Manager Tim Schearer - Technical Project Manager Pat Furio - Calvert Cliffs Licensing Supervisor Phil Wengloski - General Supervisor, Fuels AREVA Rod Kliewer - Project Manager Bob Baxter - LOCA Supervisor John Link - Advisory Engineer, Safety Analysis Gayle Elliott - Licensing Supervisor 2

Constellation Energy Meeting Purpose Non-Proprietary The way energy works~~

  • Provide the NRC staff with our licensing plans and schedules for transitioning Calvert Cliffs from Westinghouse to AREVA fuel.
  • All material in this handout has been determined to be NON-PROPRIETARY.

3

Constellation Energy Non-Proprietary Thewayenergy works~w Agenda

  • Fuel Transition Overview
  • Safety Analyses
  • Discuss Submittals and Schedule
  • Feedback 4

Constellation Energy Overview Non-Proprietary The wayenergy works~w

  • Constellation signed a contract with AREVA in Dec 2007 to transition Calvert Cliffs from Westinghouse to AREVA fuel starting with the fresh fuel delivered for the 2011 RFO.
  • Industry operating experience indicates that AREVA fuel has superior performance in Combustion Engineering (CE) designed plants using 14x14 fuel assemblies.
  • Calvert Cliffs will be the last CE designed 14x14 plant to switch to AREVA fuel.

5

Constellation Energy Non-Proprietary Theway energy works~~

Phase-In of AREVA Fuel

  • The following table provides the approximate Phase-In schedule.

Unit 1 Cycle 20 (2010-2012)

Cycle 21 (2012-2014)

Cycle 22 (2014-2016)

Cycle 23 (2016-2018)

Unit 2 Cycle 18 (2009-2011)

Cycle 19 (2011-2013)

Cycle 20 (2013-2015)

Cycle 21 (2015-2017)

AREVA Fuel 00/0 440/0 880/0 1000/0 AREVA Fuel 0%

440/0 880/0 1000/0 Westinghouse Fuel 1000/0 560/0 120/0 00/0 Westinghouse Fuel 100%

560/0 120/0 00/0

  • As an outage contingency and to provide flexibility in core design, the ability to reinsert Westinghouse fuel assemblies will be preserved in both analyses and licensing methodologies.

6

Constellation Energy Non-Proprietary Thewayenergy works~w Calvert Cliffs Experience with AREVA Fuel

  • Calvert Cliffs has AREVA Lead Fuel Assemblies (LFAs) with M5' cladding.

Unit 2 Cycle 15 (2003-2005)

Unit 2 Cycle 16 (2005-2007)

Unit 1 Cycle 18 (2008-2010) 4 LFAs 4 LFAs 2 LFAs for high burnup (peak pin <70 GWD/MTU)

  • All 4 LFAs were inspected during 2007 after 2 full cycles of operation.
  • The inspections determined that the AREVA Lead Fuel Assemblies at Calvert Cliffs are performing as expected.
  • Extrapolation of inspection results support a licensed peak pin burnup limit for AREVA fuel at Calvert Cliffs of 62 GWD/MTU.

7

Constellation Energy Non-Proprietary The way energy works~*

AREVA Fuel Transition Scope (2011 RFO)

  • Calvert Cliffs fuel assemblies will be essentially the same design as the fuel manufactured by AREVA for other CE 14 x 14 plants.

Replace Incore Monitoring System (CECOR/BASSS) with the AREVA Incore Monitoring System (POWERTRAX).

Increase peak pin burnup from 60 to 62 GWD (AREVA fuel only).

  • Change Technical Specifications and licensing basis documents.

Update 13 UFSAR Safety Analyses with AREVA methods.

8

Constellation Energy Non-Proprietary The way energyworks."

Safety Analyses 13 UFSAR Safety Analyses will be reanalyzed by AREVA using NRC generically approved methodology.

  • The 13 safety analyses include all events with a Required Overpower Margin (ROPM) impact and all events impacted by changing the fuel.

The Calvert Cliffs current UFSAR Safety Analyses design bases will be maintained, i.e., not changed to SRP acceptance criteria.

Calvert Cliffs will submit 2 of the 13 reanalyzed Safety Analyses to the NRC for review and approval.

  • Realistic Large Break LOCA (RLBLOCA), submittal required by NRC SER for EMF-21 03(P)(A).
  • Loss of Forced Reactor Coolant Flow, submittal of one Non-LOCA event covered by EMF-2310(P)(A) is required per NRC letter dated November 13, 2003.

9

Constellation Energy Non-Proprietary Theway energy works~w Realistic Large Break LOCA (RLBLOCA)

  • EMF-2103(P)(A) Rev. 0 is the current NRC approved methodology.
  • Sequoyah Unit 1 was approved by the NRC in September 2008 via the Rev 0 methodology and the NRC-negotiated "interim method".
  • The Calvert Cliffs submittal will be similar to the Sequoyah Unit 1 submittal in that we will use the Rev 0 methodology and address the following items from the "interim method":

- Fuel Rod Quench

- Forslund-Rohsenow

- Break Size

- Containment Pressure

- Rod-to-Rod Radiation

- Downcomer Boiling

- Core Power

- GDC-35

- Post-SIT Injection Condensation 10

Constellation Energy Non-Proprietary Thewayenergy works~~

Schedule for Non-Submitted AREVA Analyses The following table provides the estimated completion date for those Safety Analyses that will not be submitted to the NRC but will be available for review by the NRC.

1 2

3 4

5 6

7 8

9 10 11 Safety Analyses Main Steam Line Break Small Break LOCA Seized Rotor Control Element Assembly Ejection Control Element Assembly Withdrawl Boron Dilution Reactor Coolant System Depressurization Excess Feed Water Heat Removal Excess Load Asymmetric Steam Generator Event Control Element Assembly Drop Current Estimated Completion Date September 2009 December 2009 January 2010 February 2010 April 2010 April 2010 May 2010 July 2010 July 2010 October 2010 November 2010 11

Constellation Energy Non-Proprietary Thewayenergy works~*

Safety Analyses NOT Reanalyzed by AREVA The following UFSAR Safety Analyses that continue to use Westinghouse methodology will be confirmed to remain valid and conservative:

  • Loss of Load
  • Loss of AC Power
  • Feedline Break
  • Steam Generator Tube Rupture The following UFSAR Safety Analyses that use other methodologies will be confirmed to remain valid and conservative:
  • Excessive Charging Event
  • Fuel Handling Incident
  • Containment Response
  • Maximum Hypothetical Accident 12

Constellation Energy Non-Proprietary The wayenergy works~w Expected NRC Correspondence and Schedule

  • One submittal is planned to include the following:

Technical Specification changes RLBLOCA and non-LOCA analyses M5 exemption

  • Submittal is scheduled to allow 12 month review time by NRC staff
  • Core loading scheduled for February 2011 Submittal expected no later than January 2010 13

Constellation Energy Non-Proprietary Thewayenergy works~~

Feedback

  • Questions?
  • Concerns?
  • Comments?

14

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