ML20207G525

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Forwards Plots Showing Computed Distributions of Frequency of Exceedance Displayed in Terms of Fractile Hazard Curves in Seismic Hazard Rept
ML20207G525
Person / Time
Site: Satsop
Issue date: 08/10/1988
From: Sorensen G
WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
GO3-88-220, NUDOCS 8808240148
Download: ML20207G525 (10)
v • d • e


Text

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,b WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O. Box 968

  • Richland, Washington 99352 Docket No. 50-508 G03 220 August 10, 1988 U. S. Nuclear Regulatory Commission Attention: Document Control Desk P1-137 Washington, D. C.

20555

Subject:

NUCLEAR PROJECT N0. 3 RESOLUTION OF KEY LICENSING ISSUES SUPPLEMENTAL INFORMATION TO SEISMIC HAZARD REPORT During the meeting between the NRC and the Supply System-on July 6,1988 concerning the response to Question 230.6, the NRC staff requested plots showing the computed distributions for frequency of exceedance which were displayed in terms of fractile hazard curves in the seismic hazard report.

The requested plots are attached to this letter.

Each figure shows the probability mass function (computed using the 14 expert logic trees plus the logic tree developed for the shallow crustal-sources) and the resulting cumulative distributicn function.

The 15th, 50th, and 85th fractile levels, and the mean hazard are indicated on the figure. Figures 1 through 5 show the distributions for peak accelerations in the range of 0.1 to 0.79, and Figures 6 through 9 show the distributions for 5%-damped spectral accelerations at a period of 0.15 seconds in the range of 5 to 40 cm/sec.

If you have any questions, please contact Mr. Doug Coleman, WNP-3 Project Licensing Manager at (509) 372-5304.

Very truly yours, f

G. C.

orenscn, Manager Regule. tory Programs 8808240148 880810 Attach nent PDR ADOCK 05000500 A

PNU:

cc:

  • Mr. MF Barnoski/CE Mr. L. Reiter/NRC Mr. WC Brauer/PP&L Mr. NS Reynolds/BCP&R i

Mr. WL Bryan /WWP Mr. R. Rothman/NRC Mr. OW Cockfield/PGE

  • Mr. D. Smithpeter/BPA Mr. WJ Finnigan/ PSP &L
  • Ms. RM Taylor /Ebasco - Elma Mr. C. Goodwin/PGE Mr. G. Vissing/NRC l

Mr. JR Lewis /BPA

Mr. JB Martin /NRC Reg. V Document Control Desk /NRC 1

  • Mr. S. Prussman/Ebasco NY
  • Without attachment l

g\\l

i 1

Amax= 0.1g 85%

.8 l

20g.6 mean l

c'.

e 50% -----------,

i

'D f

o.4 i

i 2

l E

2 i

o i

I

.2 i

15% --------

l i

0 t

i 0

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l

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l l

i 4

i

.08 i

4

  1. .06 0

o u.

O r

o s

Ow Q-.04

.02

)

t 0

10-'

10-3 10-2 10-'

1 Annual Frequency Figure 1.

Computed Distribution for Frequency of Exceedance at WNP-3 Site. Peak Acceleration = 0.1 g

4 e

1

........i Amax= 0.2g asr. --------------------

.8 l

3 l-m O

1 Og.6 mean l

b I

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50 % - - - - - - - - - - - - - - - - -

l i

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);

l g

.02

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~

svar ' ' ' ' ' 'y'

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0 10-$

10-'

10-3 10-2 10-'

Annuot Frequency Figure 2.

Computed Distribution for Frequency of Exceedance at WNP-3 site.

Peak Acceleration = 0.2 g

1

,,,,,i Amax= 0.32g 85% ------- -- ----

.3 i

t 5

-a l

m O

.O

  • 6 mean 1

O a

a 50% ---------

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s i e r i t

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0 10-5 10-4 10-3 10-2 10-'

Annual Frequency Figure 3.

Computed Distribution for Frequency of Exceedance at WNP-3 site. Peak Acceleration = 0.32 g (SSE)

g.

- l 1

,,,,,j

....ii, Amax= 0.5g 85% --- ---------------

.8

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3 E

g.6 1A800

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b I

a.

50%

l 2

1 l

2.4 a

i l

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s

=

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x

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(

gg

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10-S 10-5 10-d 10-3 10-2 c

Annuci Frequency Figure 4.

Computed Distribution for Frequency of Exceedance at WNP-3 Site. Peak Acceleration = 0.5 g

1 Amax= 0.7g 85%

.8 x

n

.y l

,5 mean 0

o *6 o

6 1"

t O

50%

f f

.}

t i

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l

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l 15%

i 1

I e

1

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8 I

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l e

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0 10-7 10-6 10-5 10-4 Annuci Frequency l

l Figure 5.

Computed Distribution for Frequency of Exceedance at WP-3 Site.

Peak Acceleration = 0.7 g i

i

i 1

T = 0.15 sec Sv =- Scm/sec e5%

.8

  • x

.f

.-=

8 E

o I

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50%

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l 2

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l 0

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l i

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l l

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l e

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o s

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10-'

10-3 10-2 10-'

1 Annual Frequency Figure 6.

Computed Distribution for Frequency of Exceedance at WNP-3 site.

5% Damped Spectral Velocity = 5 cm/sec at T = 0.15 seconds

/

1 T = 0.15 sec 85% ------------------,

'8 Sv = 10cm/sec s

i y

5 t

.O 1

O I

g.6 mean u

e o.

50g ---------------,

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l i

C) i

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15%

l i

e t

1

l

{

0 i

i

.06 T = 0.15 sec l

i i

- Sv = 10cm/sec l

l i

i i

i f

4

.04

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)

l tr l

'T I

I a

I'

]

i t

i e

n.

.02 f

h I

l

'i

' d

1' 0

10-5 10-'

10-3 10-2 10-'

Annual Frequency Figure 7.

Computed Distribution for Frequency of Exceedance at WNP-3 site.

5% Damped Spectral Velocity = 10 cm/sec at T = 0.15 seconds 4

e 1

T = 0.15 sec 85%

i

.a Sv = 20.4cm/sec l-3 s

B rneon

.l.

e.6

-n D

a.

50% ----------------

i l

1 0.4 l

a E

l o

o l

.2 l

l 15%

i 8

i 0

.05 l.

l T = 0.15 sec l

Sv = 20.4cm/sec

.l l

.04 i

e

~

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~

g i

l 1

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l

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I o

e i

o s

s t

1 Q-

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I

.f h}

1

.01 f,\\l J

1'f j

t

a O

10-8 10-5 10 ~'

10-3 10-2 1

Annual Frequency Figure 8.

Computed Distribution for Frequency of Exceedance at WNP-3 site.

5% Damped Spectral Velocity = 20.4 sc/sec (SSE) at T = 0.15 seconds 1

i l

1 T = 0.15 sec S5%

'8 Sv = 40cm/sec l

b i

-3 meOn i

~

D 1

0g.6 i.

m a.

50%

1 l

S.4 8

i, 2

i E

,i 3

i o

i

.2 i

15%

l l

.i 0

l I

.03 T = 0.15 sec l

l

- Sv = 40cm/sec l

l l

1 i

8 i

.02 l

l

x i.

'.5

?

oo 2

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o-J

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/l

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0 Y

h j

,It f

i N

' ' ' ' ' ' ' ^

'h'

)

O 10-7 10-5 10-5 10-4 10-3 Annual Frequency Figure 9.

Computed Distibution for Frequency of Exceedance at WNP-3 site.

5% Damped Spectral Velocity = 40 cm/see at T = 0.15 seconds

_____--._-_n-

- _ _. - _ _ _ _ _. _ - -. _ - - _ _ - -

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