ML21089A082

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Rev. 20 to Updated Final Safety Analysis Report, Chapter 2, Section 2.4, Figures - Redacted
ML21089A082
Person / Time
Site: Seabrook NextEra Energy icon.png
Issue date: 10/22/2020
From:
NextEra Energy Seabrook
To:
Office of Nuclear Reactor Regulation
Poole J, NRR/DORL/LPLI, 415-2048
Shared Package
ML21088A388 List:
References
SBK-L-20124
Download: ML21089A082 (33)


Text

SEABROOK STATION Site Topography and Plot Plan UPDATED FINAL SAFETY ANALYSIS REPORT Rev. 12 Figure 2.4-1

SEABROOK STATION Topographic Map Depicting Major Hydrologic Features of Region UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-2

SEABROOK STATION UPDATED FINAL SAFETY ANALYSIS REPORT 30 25 Time Incremental Distribution of Local PMP z 20 0

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C,:V) 15 a..w LLI ou i------1 I ~-

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Figure I

O 5Min 15Min l Hr 3Hr 5Hr 12 Hr l0Min 2.4-3 30Min 2 Hr 4 Hr 6 Hr 24 Hr TIME

  • aout\.t *1.111111111o1 **u1,1f.1n**

,"°"'i~t"-f~:-f--4--4----+-...J.~gJ.-...U ,., ::: ::~:,:;:;*:.:-:::::*-, .L-+--f:-,-

REFERENCE:

Figure 1 of Ried~l, J.T., J. F. Appleby, and R. W. Schloemer, April 1956, "Sf':isonal Variation of the Probable Maximum Precipitation East of the 105th Meridian for Areas from 10 to 1000 Square Miles and Durations of 6, 12, 24 and 48 Hours," Hydrometeorological Report No. 33, U. 5. Department of Commerce.

SEABROOK STATION Probable Maximum Precipitation for 200 Square Miles - 24 Hours (in Inches) - The All Season Envelope UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-4

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REFERENCE:

Figure 2 of R,iedel, J.T., J. F. Appleby, and R. W. Schloemer, April 1956, "Seasonal Variation of the Probable Maximum Precipitation East of the 105th Meridian for Areas from 10 to 1000 Square Miles and Durations of 6, 12, 24 and 48 Hours," Hydrometeorological Report No. 33, U.S. Department of Commerce.

SEABROOK STATION Depth - Area - Duration Relationships UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-5 I

REFERENCE:

Portion of USGS Topographic Map Scale: 1:62,500 Exeter, New Hampshire-Mass.

SEABROOK STATION Hampton Harbor Drainage Basin UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-6

SEABROOK STATION Hampton Harbor Drainage Basin - Detailed Topography

[2 Sheets]

UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-7 Sh. 1 of 2

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SEABROOK STATION Hampton Harbor Drainage Basin - Detailed Topography

[2 Sheets]

UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-7 Sh. 2 of 2

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_ _ _ _ _ _ _ _ _ 10200' 3280 CFS 1180 0 5 oL-------~===============~====~ 10 15 20 25 Tl ME {HOURS}

( B) SUBMERGED AREA SEABROOK STATION PMP Hydrographs UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-8

SEABROOK STATION UPDATED FINAL SAFETY 150 i

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ANALYSIS REPORT II I

PMF Discharge Hydrograph 100 V'l LL u

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NOTE : DRAINAGE AREA =4 7 4 SQ. Ml.

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SEABROOK STATION Hampton Harbor Surface Area vs. Elevation UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-10

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TIME (HOURS)

SEABROOK STATION Astronomical Tidal Cycle - Hampton Harbor - November 22, 1972 UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-11

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SEABROOK STATION Hampton Harbor PMF Hydrograph UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-12

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STILLWATER LEVEL 0

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  • _1 00 0 50 800 so 45 40 35 30 25 ,o 15 0 DISTANCE FROM DEEP WATER (NAUTICAL MILES)

SEABROOK STATION Offshore Depth Profile - Transverse Line N75W (True)

UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-14

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>1.001 LI 10 zoo 1opoo 20,000 Rthtffl Petied CTHtt I Estimated probability of extreme high tide height at Boston, Mass. (Based on data for 1922-1960)

REFERENCE:

Figures 26 and 27 of U.S. Weather Bureau Hydrometeorological Section, "Criteria for a Standard Project Northeaster for New England North of Cape Cod," National Hurricane Research Project Report /168, 1964.

SEABROOK STATION Estimated Probability of Extreme High Tide at Portland, Maine and Boston, Mass.

UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-15

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SEABROOK STATION Open Coast Storm Surge Hydrographs - Seabrook Plant UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-16 I

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0 2 4 6 8 10 12 TIME-HOURS SINCE PMH CROSSED CONTINENTAL SHELF SEABROOK STATION SPF Discharge Hydrograph UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-17

19.7FT. MLW TOTAL STILLWATER LEVEL AT SITE CORRECTED FOR

/LOCAL WIND SETUP ON BAY 18 16 OPEN co.--.ST PMH SURGE HYDROGRAPH AND SPF DISCHARGE HYDROGRAPH

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ROUTED INTO BAY

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TIME 10 1 CORRESPONDS TO ARRIVAL OF PEAK SWL AT SITE SWL =STILLWATER LEVEL SEABROOK STATION Resultant PMH and SPF Stillwater Levels UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-18

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SEABROOK STATION Design Wave Heights, Periods and Waterlevels UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-19

SEABROOK STATION Flow Pathways for Wave Overtopping Waters UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-20

SEABROOK STATION Wave Protection Revetments and Seawall UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-21 1---

SECTION l RETAINING WALL Q MAX . STILLWATER LEVEL M = 0.020 30 SECTION 2

.,_180 FEET TO PUMP HOUSE 2

~~ . , ~ R~MENT ~

3 .0 *::?>..: ~-~ ----'M.;..___..;*..;.0..;0..;6..;3;_,._ _ __

0 30 SECTION 3 20

.,,._ RZETMENT 10 3.0 M = .0108 0

SECTION 4

~ REVETMENT 'v u ~ ~ - - - - - - - -M-=-0.020 ----------

,_ SECTION 5

..... +-111 FEET TO FUEL STORAGE BUILDING 2

z , , . _ SEAWALL 'v 0 +

10 M= 0 . 020

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..... 0 SECTION 6 JOj ,._ 70 FEET TO COOLING 20 TOWER

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SECTION 7 20 'v 1~ + - REVETMENT 1.5 cS~-------......:M:!!...:.=~O'...:.~o::::3.:::5:.._7_ _ _ _ __:__ _

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0 SECTION 8

~ REVETMENT 'v 20]

1. 5 ~----------.llM!L=~Q1......1:0~2:.:"25:,!:!0'......__ _ _ __:_

10 0 10 20 30 40 50 DISTANCE, FEET SEABROOK STATION Topographic Profiles UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-22

REV.04 A INFLOW DUE TO LOCAL INTENSE V) SPS-PRECIPITATION LL u B - INFLOW DUE TO WAVE OVERTOPPING 1500 ON SOUTHEAST FLANK w C TO*TAL INFLOW= A B C

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SEABROOK STATION SPS - PMH Site Flooding UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-23

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UJ SEABROOK STATION Typical Sections - Revetments A, B, & C UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-24

2111 LBS/FT. OF WALL PLANT GRADE,MSL EL=20.0' - - - - - - - F " " - : : Z r - - - - - ; r -

hc =5.54' 381 PSF (DYNAMIC PRESSURE)

EL.= ll.71'-

6398 LBS OF WALL MS _7 o'- (STATIC FORCE)

L EL .-

  • 905 PSF (STATIC PRESSURE)

BROKEN WAVE CONDITION ON VERTICAL SEAWAI l WAVE PARAMETERS Ht, = 7. 91 I (BREAKING WAVE HEIGHT)

T = (INDEPENDENT OF WAVE PERIOD) d1 = 8.6 1 (WATFR DEPTF-1 IN FRONT OF STRUCTURE) 26,622 LBS/FT OF WALL PLANT GRADE, MSL EL.= 20.0'- - - - - - ,

(DYNAMJC FORCE)

EL= 19.56' 10,097 PSF (DYNAMIC PRESSURE) 5047 LBS/FT.

OF WALL (STATIC FORCE)

MSL EL.= 7 .o' -L---------::8--i!04._,....,PS=F,...,.,STATIC PRESSURE)

BREAKING. WAVE CONDITION ON VERTICAL SEAWALL WAVE PARAMETERS Ht, = 7.9Jl (BREAKING WAVE HEIGHT)

T = 4.8 SECONDS (WAVE PERIOD) d1 = 8.6 1 (WATER DEPTH IN FRONT OF STRUCTURE)

PLANT GRADE,MSL EL . = 2 0 . 0 ' - - - - - ,

d=7.6' EL .= 10 .5 3 ' -

1862 LBS/FT.

OF WALL i--104 PSF I MSL EL. = 8 .o*- (STATIC FORCE) (DYNAMIC PRESSURE) 490 PSF (STATIC PRESSURE}

NON-BREAKING WAVE CONDITION ON RETAINING WALL WAVE PARAMETERS H = 2.0 1 (WAVE HEIGHT)

T = 4.8 SECONDS (WAVE PERIOD) d 5 = 7 .6 1 (WATER DEPTH IN FRONT OF STRUCTURE)

SEABROOK STATION Wave Pressure Distributions against Seawall and Retaining Wall UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-25

SEABROOK STATION L EGEND UPDATED FINAL SAFETY --

m BEACH DEPOSIT fl!E JO MIO. SIU USUILLI IUlll 01 Millll DIPOSIJI SWAMP OEPOS IT ORGINIC Mlllllll PLUS SINO, Sill, SOME OIIHL 11 ANALYSIS REPORT

!HIS 1111 OVIILIEI Jill 01 Ml!III DEPOSITS

~

"' OUTWASH OEPOS IT l

0 D .

COIRSI IUD UO rllE GRllll !HIN {LISS THU 20')

OYIRLIIS Jill 01 INJIIFINGIII WIJH MIIINI OIPOSIJI Surficial Geology in the Seabrook Area MAR I NE DEPOSIT SITE ~ CUI , SILT, SIM SANO LIMIIIJID I CE-CONTACT DEPOSIT IIRIJlfllD 1110, OIIVll, 11D CO!lllS II Plllll ,

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HRRICIS UD HILLS

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TI LL CUI, !Ill, 11D !OULDIRS INTIRMIIID , GENE!llll LISS THI! 20' !Hit! IUJ MIi !EICH 200' JHICI II DIUMLINI 1--- I I::?:*~#

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Scale in Milu

@) PUBLIC SUPPLY WELL Figure 0 DOMESTIC WELL 2.4-26

SEABROOK STATION Geologic Profile of Seabrook Area UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-27 I

SEABROOK STATION T

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UPDATED FINAL SAFETY ANALYSIS REPORT Water Table Contours o.

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2.4-28

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rm AJOYI IIDI SIA i.lTIL Farm *.._

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- -**-**- lllur !lllle Cantauw

_ _ _ TlltoCTlllliiJ

APPROXIMATE GROUNDWATER ELEVATION CONTOURS SEABROOK STATION yCj ~"'

~

Notes: 1) Elevation in feet above MSL.

__./ .~ 2) Contours shown are based on water level readings in borings at the time the borings were performed.

3) Groundwater contours shown are superimposed on a copy of UPDATED FINAL SAFETY fig. 2. 5-12 from Seabrook. FSAR.

TIDAL MARSH

  • ~

Approximate Groundwater Elevation Contours

- - - - - - Original Surface Topog raphy ANALYSIS REPORT W.<

    • ....<F;'~ "-----

5' /;:-:-:~;.;::;,:~:-:.:.::)j_..J ~

Groundwater Contours in Plant Site Area Prior to

-~-

(_~

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\ ~ll 1--- -\- TIDAL MARSH '.[

Construction DATUM = MEAN SEA LEVEL 0' I0J' 200' 300' 400' 500' Mt6.l I I ' I Figure

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2.4-29

\ NORTH

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'tl-0 I

I 000 FOOT GRID SEABROOK STATION Site Vicinity Wells UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-30

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SEABROOK STATION Seabrook Area Wells UPDATED FINAL SAFETY ANALYSIS REPORT Figure 2.4-31

SEABROOK STATION

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UPDATED FINAL SAFETY

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I ANALYSIS REPORT

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Water Level Variations in the Seabrook Area

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