CNL-14-058, Project Schedule for the Extension Request Regarding the Flooding Hazard Reevaluation Report Required by NRC Request for Information Pursuant to 10 CFR 50.54(f) Re Recommendation 2.1, Flooding, of the

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Project Schedule for the Extension Request Regarding the Flooding Hazard Reevaluation Report Required by NRC Request for Information Pursuant to 10 CFR 50.54(f) Re Recommendation 2.1, Flooding, of the
ML14098A152
Person / Time
Site: Browns Ferry  Tennessee Valley Authority icon.png
Issue date: 04/07/2014
From: James Shea
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
CNL-14-058, L44 140407 002
Download: ML14098A152 (6)
v • d • e


Text

L44 140407 002 Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 CNL-14-058 April 7, 2014 10 CFR 50.54(f)

ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296

Subject:

Project Schedule for the Extension Request Regarding the Flooding Hazard Reevaluation Report Required by NRC Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f)

Regarding Recommendation 2.1, Flooding, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident

Reference:

TVA Letter to NRC, Extension Request Regarding the Flooding Hazard Reevaluation Report Required by NRC Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendation 2.1, Flooding, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident, dated March 11, 2014 In the referenced March 11, 2014 letter, the Tennessee Valley Authority (TVA) submitted an extension request regarding the Browns Ferry Nuclear Plant (BFN), flooding hazard reevaluation report (HRR). During the April 1, 2014, conference call with TVA, Nuclear Regulatory Commission staff requested the detailed schedule describing the tasks associated with completing the flooding HRR by the requested extension date of March 12, 2015.

The purpose of this letter is to provide the detailed schedule. Specifically, the enclosure to this letter provides the detailed schedule for completing the BFN flooding HRR project by March 12, 2015.

U.S. Nuclear Regulatory Commission Page 2 April 7, 2014 There are no new regulatory commitments in this letter. If you have questions regarding this matter, please contact Kevin Casey at (423) 751-8523.

Respectfully, J~~

Vice President, Nuclear Licens Enclosure Browns Ferry Nuclear Plant - Flooding Hazard Reevaluation Report Project Schedule cc (w/Enclosure):

NRC Regional Administrator - Region II NRR Director - NRC Headquarters NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRR Project Manager - Browns Ferry Nuclear Plant

ENCLOSURE BROWNS FERRY NUCLEAR PLANT FLOODING REEVALUATION REPORT PROJECT SCHEDULE

E-1 of 3

!Activity Name start Finish Nov-11-13 A Apr-16-14 Mar-04-14A Apr-17-14 May-01-14' Inflow Development BFN Inflow Development Apr-21-14' Jun-17-14 Inflow DeveloRment Extension Date Inflow Development Extension Date Jul-03-14' ROR Projects Dam Stability Analysis Tims Ford stability Analysis Complete Sep-12-14 Nickajack stability Analysis Complete Sep-15-14 Wheeler stability Analysis Complete Sep-22-14 Guntersville stability Analysis Complete Sep-23-14 4 Dam stability Analysis Complete (from ROR)

Sep-23-14' Dam Stablllty Extentlon Date Dam stability Extension Date Sep-30-14' Develop PMF Dam Rating Curve Develop lims Ford PMF Rating Curve Sep-15-14 Sep-29-14 Develop Nickajack PMF Rating Curve Sep-15-14 Sep-29-14 Develop Wheeler PMF Rating Curve Sep-23-14 Oct-07-14 Develop Guntersville PMF Rating Curve Sep-24-14 Oct-08-14 4 Dam PMF Rating Curve Complete Oct-08-14 Develop Seismic Dam Rating Curve Develop Nickajack Seismic Rating Curve Sep-15-14 Sep-29-14 Develop lims Ford Seismic Rating Curve Sep-15-14 Sep-29-14 Develop Wheeler Seismic Rating Curve Sep-23-14 Oct-07-14 Develop Guntersville Seismic Rating Curve Sep-24-14 Oct-08-14 4 Dam Seismic Rating Curve Complete Oct-08-14 Dam Rating Curve Extension Date Dam Rating Curve Extension Date Oct-27-14' TVA Review Dam Rating Curve TVA Review of 4 PMF Dam Rating Curve Oct-06-14 Oct-16-14 TVA Review of 4 Seismic Rating Curve Oct-17-14 Oct-28-14 Dam Rating Curve Review Extension Date TVA Review of 4 Seismic Rating Curve Extension D~

Nov-06-14' Develop HEC-RAS Unsteady Flow for PMF Develop Nickajack HEC-RAS Unsteady Flow Rules for Sep-30-14 Oct-14-14 Develop lims Ford HEC-RAS Unsteady Flow Rules for Sep-30-14 Oct-14-14 Develop Wheeler HEC-RAS Unsteady Flow Rules for P Oct-08-14 Oct-22-14 Develop Guntersville HEC-RAS Unsteady Flow Rules f<

Oct-OS-14 Oct-23-14 4 Dam Unsteady Flow for PMF Complete Oct-23-14' Develop HEC-RAS Unsteady Flow for Seismic Develop Nickajack HEC-RAS Unsteady Flow Rules for Sep-30-14 Oct-14-14 Develop lims Ford HEC-RAS Unsteady Flow Rules for Sep-30-14 Oct-14-14 2014 Apr I

May I

Jun I

Jul I

Aug I

Sep I

Oct Nov Dec Jan BFN Inflow DeveloPment i

i i

~-~~~~-~~~~?~~~~-t-~!~~~!?n Date i

i i

  • Tims ~ord stability~alysis Comple~e Nick~jack stability,A.{ialysis Compl~te

+ Wheeler stabilit)Analysis Com~lete

  • Guntersville stabil~y Analysis domplete

*-4~ oam StB-bilit-Y +-a1ys1s-comp1Fe (fr-om-Ro-Rt

~ Dam stabilit~ Extension Da~e i

i i

c::::::J: Develop lim~ Ford PMF Ra,ting Curve

~: -oeve1op-N1ci<~Jack-PM_F_Rating-curve--

6 Develop ~heeler PMF ~ating Curve Q

Develop ~untersville P~F Rating Cur~e

  • 4 Dam P~F Rating Cur~e Complete

~~ oeve1op-NiCk~JBCk-SeiSITiiC~RBting Curve '

c::::::J: Develop lim~ Ford Seismic:Rating Curve :

Q Develop ~heeler Seis~ic Rating Curv~

~

Develop ~untersville S~ismic Rating durve

  • 4 Dam S~ismic Rating 9urve Complet$
  • !Dam Rating C~rve Extension! Date c::::J TVA ~eview of 4 P~F Dam Rating!curve c:::::J : TVA Review ~f 4 Seismic Ra~ing Curve 2015 Feb Mar I

Apr TVA Revi~w of 4 Seismi~ Rating Curve !Extension Date i

i i

i Devel~p Nickajack ~EC-RAS Unst~ady Flow Rule~ for PMF

P--~~~~~~~-~~~-~?!?_~~~--~~~-~~~-t~~-~~~-1~-~~~~~-f?!_~!-:1~----'--

c:::::::J D~velop Wheeler HEC-RAS Unisteady Flow R~les for PMF :

c:::::::J D~velop Gunter~ville HEC-RA~ Unsteady Fl'4 Rules for P~F i

i i

  • 4iDam UnsteadtFlowfor PMFiComplete b

Deve~~~-~~~~~!~~~-~~~--~~~-~~~!~~dy ~-I~-~~~~ for Seismic:

L--------------'-------------*1:::::::f Develpp lims Ford ~EC-RAS Unst~ady Flow Rule~ for Seismic:

Actual Work c::::::::J Remaining Work

  • Milestone

!Yellow Denotes NRC Extension Milestone Dates Fukushima Response -2.1 Flooding Data Date of Apr--07-14 May Jun Apr-03-14 Page 1 of3

E-2 of 3 Activity Name start Finish Apr Develop Wheeler HEC-RAS Unsteady Flow Rules for S Oct-08-14 Oct-22-14 Develop Guntersville HEC-RAS Unsteady Flow Rules f<

Oct-09-14 Oct-23-14 4 Dam Unsteady Flow for Seismic Complete Oct-23-14 HEC-RAS Unsteady Flow Extension Date HEC-RAS Unsteady Flow Extension Date Nov-14-14*

TVA Review Unsteady Flow Rules TVA Review of 4 PMF Unsteady Flow Rules Oct-21-14 Oct-30-14 TVA Review of 4 Seismic Unsteady Flow Rules Oct-31-14 Nov-12-14 HEC-RAS Unsteady Flow Rev iew Extension Date TVA Review of 4 Seismic Unsteady Flow Rules Exte1 Nov-26-14*

PMF Simulations PMF Simulations (21,400) (BFN)

Oct-31-14 Nov-17-14 PMF Simulations (7,980) (BFN)

Oct-31-14 Nov-17-14 PMF Simulations Downstream Dam Failure (BFN)

Oct-31-14 Nov-17-14 BFN PMF Simulations Complete Nov-17-14*

TVA Review of PMF Simulations TVA Review of PMF Simulations (BFN)

Nov-13-14 Nov-19-14 PMF Calclulations PMF Calculations (BFN)

Nov-20-14 Dec-09-14 TVA Review of PMF Calculations TVA Review of PMF Calculation (BFN)

Dec-10-14 Dec-16-14 PMF Slmulatlon Extension Date PMF Simulation Extension Date Jan-07-15*

Sunny Day Failure Sunny Day Failure #1 (BFN)

Jun-16-14*

Jul-02-14 Sunny Day Failure #2 (BFN)

Jun-16-14 Jul-02-14 Sunny Day Failure #3 (BFN)

Jun-16-14 Jul-02-14 BFN Sunny Day Failure Complete Jul-02-14' TVA Review of Sunny Day Failure TVA Review of Sunny Day Failures (BFN)

Jul-03-14 Jul-10-14 Sunny Day Failure Calculation Sunny Day Failure Calculation (BFN)

Jul-03-14 Jul-28-14 TVA Review of Sunny Day Failure TVA Review of Sunny Day Failure Calculation (BFN)

Jul-29-14 Jul-30-14 Sunny Day Failure Extension Date Sunny Day Failure Extension Date Dec-17-14*

Single Dam Seismic Simulations Seismic Dam Failure Simluations #1 (BFN)

Oct-24-14 Nov-06-14 Seismic Dam Failure Simluations #2 (BFN)

Oct-24-14 Nov-06-14 Seismic Dam Failure Simluations #3 (BFN)

Oct-24-14 Nov-06-14 BFN Seismic Failure Simulations Complete Nov-06-14*

TVA Review of Single Dam Seismic Simulations TVA Review of Single Dam Seismic Simulations (BFN)

Nov-07-14 Nov-14-14 Combination Dam Seismic Simulations Seismic Dam Failure Combination Simulation #1 (BFN)

Oct-24-14 Nov-06-14 Seismic Dam Failure Combination Simulation #2 (BFN)

Oct-24-14 Nov-06-14

  • Milestone

!Yellow Denotes NRC Extension Milestone Dates Actual Work c::::::::J Remaining Work May 2014 2015 Jun I

Jul I

Aug I

Sep I

Oct Nov Dec Jan Feb Mar I

Apr c:::::::J D~velop Wheeler HEC-RAS un;steady Flow R~les for Seism~c c:::::::J D~velop Gunter~ville HEC-RA:$ Unsteady FIO'fv Rules for S~ismic

  • 4 :oam Unstead~ Flow for Seisrhc Complete i

i i

.- -HEC~RAs-u~-ste-adYf 1~

-&tens10~-o-ate- -

c::::J! TVA Review bf 4 PMF Unsteady Flow Rules t::::::J TVA Review of 4 Seisrnc Unsteady ~low Rules

--*-!T\\tA-Re-view-o~ 4-se1smic-u-n~-eadY-F1_ow _

R-~1es-EX-te-n-SiO_n_ pate- -

i i

i t:::::::J PMR Simulations (21,400) (BFN)

  • i::::::::J PM~ Simulations (~,980) (BFN)

~

PM~ Simulations D~nstream Da~ Failure (BF~) ____________

1 I

11 l~I:I:r*...............

D TVA ~eview of PMF! Calculation (~FN)

PMF SimUlation Extension Date cs sLi'1r1ioayFai1ure#i isFN) -----------

l c:::::::i Sunny Day failure #2 (BFN)

~

~:n~~na:};~~r:a:~r~

8

~~~plete

:-o- --rvA ReFew-ot sunny- ~-ay-Fai1ures-(~F-N)- -

!=.i:":J:::::1.::"'.,,,,,T'"'"

J 11 Sun~y Day Failure ~tension Oat~

6 Seismic Oam Failure Simluations #1 (B~N)

Q Seismic Qam Failure Si~luations #2 (B~N)

____________ T __

~ -seiSrTiic-qam-1=-BilUr-eSi~1U-atiOnS-#3-(1WN)

BFN Seisf"nic Failure Siniulations Compl~te i

i i

i D

TVA ~eview of Singl~ Dam Seismic !simulatiais (~FN)

I I

I I

I

ci--se1smic-6-am-1=-ailUr-eco~birlBt-iOn-s1m-ui~ti~-~i1-(B-FN_) __

Q Seismic tjam Failure Co~bination Simuiatiai #2 (BF~)

Fukushima Response -2.1 Flooding Data Date of Apr--07-14 May Jun Apr-03-14 Page 2 of3

E-3 of 3 Activity Name start Finish Apr May Seismic Dam Failure Combination Simulation #3 (BFN)

Oct-24-14 Nov-06-14 TVA Review Combination Dam Seismic Simulations TVA Review Seismic Dam Combination Simulatioos (BF Nov-07-14 Nov-14-14 Seismic Calculations Seismic Calculation (BFN)

Nov-07-14 Nov-21-14 TVA Review of Seismic Calculations TVA Review Seismic Calculation (BFN)

Nov-24-14 Dec-01-14 Seism ic Calculations Extension Date Seismic Failure Simulations Extension Date Jan-02-15*

Uncertainty Simulations and Calculations Manning's Uncertainty Simulations (BFN)

Oct-31-14 Nov-19-14 Gate Operability Simulations (BFN)

Nov-13-14 Dec-02-14 PMF with Peaked/Lagged Unit Hydrographs (BFN)

Nov-13-14 Dec-24-14 Prepare Uncertainty Simulation Calculation (BFN)

Dec-01-14*

Dec-30-14 100% Runoff Simulations with Peak/Lagged UH (BFN)

Dec-10-14 Dec-26-14 100% Runoff Simulations (BFN)

Dec-10-14 Dec-30-14 Uncertainty Simulations Extension Date Uncertainty Simulation Extension Date Dec-30-14*

TVA Review of Uncertainty Simulations TVA Review Uncertainty Simulations (BFN)

Dec-26-14 Jan-02-15 TVA Review Simulations Extension Date TVA Review Simulations Extension Date Jan-27-15*

Prepare, Review, and Submit Final Report to NRC Prepare Final BFN HRR Jan-05-15 Jan-05-15 TVA Owner's Review of BFN Final Report Jan-06-15 Jan-27-15 Submit BFN Final Hazard Re-Evaluation Report to NRC Jan-27-15*

Prepare Final Report Extension Date Submit Final Report Extension Date Mar-11-15*

Actual Work c::::::::J Remaining Work Milestone

!Yellow Denotes NRC Extension Milestone Dates I 2014 2015 Jun I

Jul Aug Sep Oct Nov Dec Jan Feb Mar I

Apr I

May

~

Seismic qam Failure Co~bination Simu!atioo #3 (BF~)

i i

i i

______________ L -~--~y~~~~~~~-~~!~~i~~~~~~~~~~~!~~-~~~_u_l~!i?_ts (BFN) c::::::::J Seismic Calculation (BFN) d TVA Review: Seismic Calculation (BFN) :

~-SeiS-n1iC-FBi~re-si-n1UIBiiO~s-EXt-erlSi-Orl-D~te i

i i

~

Mahning's UncertSi.intySimulatiooS (BFN) c:::::::::i Gate Opera)iility Simulation~ (BFN)

~MF with Peake~/Lagged Uni~ Hydrographs ~BFN)

- -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -,- - - - - - - - - - - - -,- - - - - - - - - - - - - - ~ -Prep-ar-e UrlC~-rt8i_n_tY-SirTI-U1~tiO_n_ CB1_c_U1Etti-O~ -(BFt,h--

c::::::::J

~00% Runoff S!mulations witr Peak/Lagged: UH (BFN)

~ Uncertainty ~mulation Ext~nsion Date

:-------------:--------------~----

q TVA Revie~ Uncertainty $mulations (BF~)

~VA Review $imulations Ext~nsion Date

L

r-1 -prepa-re-Fl~BIBFN-HRW c::::::::::J ~TVA Owner's :Review of BFN Final Report :

~ubmit BFN ~inal Hazard R~-Evaluation R~port to NRC Submit final Report Eitension Date Fukushima Response -2.1 Flooding Apr-03-14 Data Date of Apr--07-14 Page 3 of3 Jun

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