ML13092A288

From kanterella
Jump to navigation Jump to search
Licensee Slides for 4/3/13 Pre-Submittal Meeting to Discuss License Amendment Request
ML13092A288
Person / Time
Site: San Onofre  Southern California Edison icon.png
Issue date: 04/02/2013
From:
Southern California Edison Co
To:
Division of Operating Reactor Licensing
Paige J
References
Download: ML13092A288 (19)
v • d • e


Text

SONGS EXCELLENCE 2013 SONGS License Amendment Request Pre-Submittal Meeting April 3, 2013 1

SONGS EXCELLENCE 2013 Meeting Agenda Opening Remarks R. St. Onge Meeting Purpose SONGS Background Information RAI #32 Recap License Amendment Request R. Treadway LAR Topics and Questions Closing Remarks R. St. Onge 2

SONGS EXCELLENCE 2013 Meeting Purpose

  • Discuss SCEs proposed Licensing Amendment Request to support SONGS Unit 2 return to service
  • Provide overview of the draft License Amendment Request
  • Address any issues with the scope and content of the proposed LAR and confirm SCE understands the NRC staff position 3

SONGS EXCELLENCE 2013 SONGS Background Information

- Brief Recap of Unit 3 Stem Generator Event

- Summary of CAL Response Letter and RTS Report

- RAI Status

- SCE submitted RAI-32 response

- SONGS Unit 2 target restart date of June 1, 2013 4

SONGS EXCELLENCE 2013 Recap of RAI-32

  • SCEs RAI-32 response provided:

- TS 5.5.2.11.b.1 is met since normal steady state full power was determined to be 70% power for the operating cycle

- Additionally, 100% power OA was submitted to NRC

  • SCEs response to RAI-32 is still under review by NRC

- SCE is voluntarily providing this LAR

- SCE views this as a parallel success path to address the concerns raised by NRC staff 5

SONGS EXCELLENCE 2013 License Amendment Request

  • SCE has determined adjusting SG thermal-hydraulic parameters will prevent the loss of tube integrity due to FEI
  • To implement this strategy, Unit 2 will be operated at 70%

power

  • This LAR addresses the staff concern in RAI-32 that operation at reduced power is within the TS regulatory constraints rather than the licensees flexibility 6

SONGS EXCELLENCE 2013 License Amendment Request

  • The proposed license amendment enables SCE to satisfy the TS at an adjusted value of normal steady state full power operation consistent with the Operational Assessments submitted in its response to the CAL
  • The LAR proposes two footnote changes in order to address the temporary nature of this request 7

SONGS EXCELLENCE 2013 TS 5.5.2.11 and Maximum Power Level LAR

  • LAR is being submitted to address RAI-32

- As a parallel path, SCE has prepared a LAR because review of the 100% OA may not be complete in order to support a June 1, 2013 restart date

- Amendment to both the TS and License are expected to be temporary for use during Cycle 17 only

- PRA shows there is no change in risk when operating at 70% power, which supports the No Significant Hazards Consideration 8

SONGS EXCELLENCE 2013 TS 5.5.2.11 and Maximum Power Level LAR

  • LAR changes to T.S.

- TS 5.5.2.11 defines SCE SG Program requirements

- Amendment will clarify that normal steady state full power is limited to 70%, consistent with the CAL response and the RTSR commitment

- LAR is a temporary measure until the final power level at which Unit 2 can operate is determined

  • Final power level will be determined during cycle 17 9

SONGS EXCELLENCE 2013 TS 5.5.2.11 and Maximum Power Level LAR

  • LAR changes to License Condition

- Amendment will specify that the Maximum power level at which Unit 2 will operate at during Cycle 17 will not be in excess of 70%

  • This is consistent with the changes to TS 5.5.2.11
  • Technical issues associated with acceptability of 70% power operation are addressed in the CAL response (and the associated RAI responses)
  • We recognize that approval of the LAR will be based on approval of the CAL response and RAI responses 10

SONGS EXCELLENCE 2013 TS 5.5.2.11 and Maximum Power Level LAR

  • Unit 2 is currently licensed to operate at all power levels up to 100% including 70% power
  • Outline of LAR and support for NSHC

- Description of change to TS and License

- LAR and NSHC Discussion

  • Addresses Extended Reduced Power Operation on Safety Analysis
  • SG Tube Integrity requirements are met
  • Limited to one refueling cycle of operation 11

SONGS EXCELLENCE 2013 TS 5.5.2.11 and Maximum Power Level LAR

  • No Significant Hazards Consideration

- There is no significant increase in the probability or consequences of an accident previously evaluated

- There is no possibility of a new or different kind of accident introduced because of this amendment

- There is no change with this LAR that involves a significant reduction in margin of safety 12

SONGS EXCELLENCE 2013 TS 5.5.2.11 and Maximum Power Level LAR

  • SCE Commitment for operation beyond Cycle 17

- Commitment is to submit and obtain NRC approval of License Amendment Request for long term continued operation of Unit 2 beyond Cycle 17 13

SONGS EXCELLENCE 2013 LAR Topics for Discussion

  • Addressing Maximum Power 14

SONGS EXCELLENCE 2013 LAR Topics for Discussion

- Addressing RAI #32 15

SONGS EXCELLENCE 2013 LAR Topics for Discussion

- Scope of the LAR 16

SONGS EXCELLENCE 2013 LAR Topics for Discussion

- LAR Process Issues 17

SONGS EXCELLENCE 2013 LAR Topics for Discussion

- Technical basis documented for NSHC 18

SONGS EXCELLENCE 2013 Closing Remarks 19

Retrieved from "https://kanterella.com/w/index.php?title=ML13092A288&oldid=2065604"