ML22124A148: Difference between revisions

From kanterella
Jump to navigation Jump to search
← Older editNewer edit →
VisualWikitext
StriderTol Bot change
StriderTol Bot change
Line 18: Line 18:


=Text=
=Text=
{{#Wiki_filter:Calvert Cliffs Nuclea r Power Plant Control Element A ssembly Rec overy Time I mprovement P roject LAR
{{#Wiki_filter:Calvert Cliffs Nuclear Power Plant Control Element Assembly Recovery Time Improvement Project LAR NRC Pre-submittal Meeting May 10, 2022 Proprietary (Redacted Version)
* Framatome Topical Report ANP-3915P, Calvert Cliffs Misaligned CEA Evaluation
- Framatome performed calculations that validate extended operation at reduced power level with a single misaligned regulating rod.
* [ The Framatome analysis considered the following conditions:
- Hot Full Power Initial-State (most limiting)
- Five (5) times in life (BOC, Early-MOC, MOC, Late-MOC and EOC)
- Location of the misaligned CEA
- Time spent at full power before power reduction (COLR Limit)
- Time at reduced power condition
- Analysis through duration of CEA recovery ]
Supporting Framatome Analysis Summary CEA Recovery Time Improvement Privileged and Confidential 1
FRAMATOME PROPRIETARY


NRC P re-submittal Meeting May 10, 2022
Supporting Framatome Analysis Summary (cont.)
 
CEA Recovery Time Improvement Privileged and Confidential 2
Proprietary (Redacted Version)
Supporting Framatome Analysis Summary
* Framatome Topical Report ANP-3915P, Calvert Cliffs Misaligned C E A Evaluation
- Framatome performed calculations that validate extended operation at reduced power level with a single misaligned regulating rod.
* [ The Framatome analysis considered the following conditions:
- Hot Full Power Initial-State (most limiting)
- Five (5) times in life (BOC, Early-MOC, MOC, Late -MOC and EOC)
- Location of the misaligned CEA
- Time spent at full power before power reduction (COLR Limit)
- Time at reduced power condition
- Analysis through duration of CEA recovery ]
 
1 CEA Recovery Time Improvement Privileged and Confidential FRAMATOME PROPRIETARY Supporting Framatome Analysis Summary (cont.)
* Analysis validated a reduction to 60% Reactor Thermal Power (RTP) provided adequate margin for safe operation
* Analysis validated a reduction to 60% Reactor Thermal Power (RTP) provided adequate margin for safe operation
- [ FRT behavior for the analyzed conditions meet FRT LCO during operation at 60 %
- [ FR T behavior for the analyzed conditions meet FR T LCO during operation at 60%
RTP
RTP
- Extended operation for up to 7 days
- Extended operation for up to 7 days
- 60% RTP must be maintained until the dropped CEA is fully recovered. ]
- 60% RTP must be maintained until the dropped CEA is fully recovered. ]
* After the recovery of the misaligned CEA
* After the recovery of the misaligned CEA
- [ Reactor can return to full power using vendor supported ramp rate limits
- [ Reactor can return to full power using vendor supported ramp rate limits
- Evaluation of FRT until the return of steady state conditions ]
- Evaluation of FR T until the return of steady state conditions ]
* [ All LCOs must be met, including required actions, during the CEA misalignment and recovery ]
* [ All LCOs must be met, including required actions, during the CEA misalignment and recovery ]
FRAMATOME PROPRIETARY


2 CEA Recovery Time Improvement Privileged and Confidential FRAMATOME PROPRIETARY LAR Acceptance and Review
LAR Acceptance and Review CEA Recovery Time Improvement Privileged and Confidential 3
* The Framatome ANP-3915P Licensing Report summarizes the methodology and approach and will be submitted by Constellation with the LAR
* The Framatome ANP-3915P Licensing Report summarizes the methodology and approach and will be submitted by Constellation with the LAR
* We intend to provide the detailed Framatome ANP-3915P Analysis Report to the NRC for review via a secure website
* We intend to provide the detailed Framatome ANP-3915P Analysis Report to the NRC for review via a secure website FRAMATOME PROPRIETARY}}
 
3 CEA Recovery Time Improvement Privileged and ConfidentialFRAMATOME PROPRIETARY}}

Revision as of 17:14, 27 November 2024

(Ccnpp) Control Element Assembly (CEA) Recovery Time Improvement Project LAR Pre-Submittal Redacted (Public)
ML22124A148
Person / Time
Site: Calvert Cliffs  
Issue date: 05/10/2022
From:
Constellation Energy Nuclear Group
To: Jason Paige
NRC/NRR/DORL/LPL1
Marshall M, NRR/DORL/LPL1, 415-2781
Shared Package
ML22124A157 List:
References
Download: ML22124A148 (4)
v • d • e


Text

Calvert Cliffs Nuclear Power Plant Control Element Assembly Recovery Time Improvement Project LAR NRC Pre-submittal Meeting May 10, 2022 Proprietary (Redacted Version)

  • Framatome Topical Report ANP-3915P, Calvert Cliffs Misaligned CEA Evaluation

- Framatome performed calculations that validate extended operation at reduced power level with a single misaligned regulating rod.

  • [ The Framatome analysis considered the following conditions:

- Hot Full Power Initial-State (most limiting)

- Five (5) times in life (BOC, Early-MOC, MOC, Late-MOC and EOC)

- Location of the misaligned CEA

- Time spent at full power before power reduction (COLR Limit)

- Time at reduced power condition

- Analysis through duration of CEA recovery ]

Supporting Framatome Analysis Summary CEA Recovery Time Improvement Privileged and Confidential 1

FRAMATOME PROPRIETARY

Supporting Framatome Analysis Summary (cont.)

CEA Recovery Time Improvement Privileged and Confidential 2

  • Analysis validated a reduction to 60% Reactor Thermal Power (RTP) provided adequate margin for safe operation

- [ FR T behavior for the analyzed conditions meet FR T LCO during operation at 60%

RTP

- Extended operation for up to 7 days

- 60% RTP must be maintained until the dropped CEA is fully recovered. ]

  • After the recovery of the misaligned CEA

- [ Reactor can return to full power using vendor supported ramp rate limits

- Evaluation of FR T until the return of steady state conditions ]

  • [ All LCOs must be met, including required actions, during the CEA misalignment and recovery ]

FRAMATOME PROPRIETARY

LAR Acceptance and Review CEA Recovery Time Improvement Privileged and Confidential 3

  • The Framatome ANP-3915P Licensing Report summarizes the methodology and approach and will be submitted by Constellation with the LAR
  • We intend to provide the detailed Framatome ANP-3915P Analysis Report to the NRC for review via a secure website FRAMATOME PROPRIETARY
Retrieved from "https://kanterella.com/w/index.php?title=ML22124A148&oldid=3797014"