ML19327A783

Summary of 890927 Meeting W/Util in Rockville,Md Re Site Specific Seismic Response Spectra.Attendee List,Agenda & Presentation Encl

ML19327A783
Person / Time
Site:	Oyster Creek
Issue date:	10/10/1989
From:	Dromerick A Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8910180112
Download: ML19327A783 (69)

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't UNITED STATES i

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NUCLEAR REGULATORY COMMISSION -

WASHINGTON, O. C. 20656

' October 10, 1989 Docket No. 50-219 LICENSEE: GPU N:elear Corporation

= Jer.edy Control Power and Light Company FACILITY: Oyster Creek Nuclear Generating Station 1

SUBJECT:

SUMARY OF SEPTEMBER 27, 1989 MEETING WITH GPU NUCLEAR CORPORATION (GPUN) TO DISCUSS SITE SPECIFIC SEISMIC RESPONSE SPECTRA FOR THE 4

OYSTER CREEK NUCLEAR GENERATING STATION On Wednesday, September 27, 1989 a meeting was held at NRC, Rockville, i

Naryland with GPU Nuclear Corporation (GPUN/the licensee) to discuss matters 0

related to the site specific seismic response spectra (SSRS) for the Oyster l

Creek Nuclear Generating Station. is the list of individuals participating in the discussion.

l t-the licensee's agenda and presentation. The following is a sumary of tb. 4 ignificant items discussed.

The lhasee msented the project' status and ihdicated that there objective l

was to ovvelop a site specific response spectra for use in the future seismic analyses at Oyster Creek. The imediate usage will be in qualifying some of

^

the supports and I. heir anchorages'in accbrdance'w'ith IEBs 79-02'and 79-14. The licensee provided a summary of the development of SSRS for Oyster Creek and i

' stated that as a result of_these analyses it was concluded that 1) the epicentral aistance has the strongest influence on the. final spectrum and 2)

GPUW will use the 84 SSRS as Oyster Creek's site specific spectra. The

' licensee also presented a schedule to complete this effort, i

A detailed' discussion was held regarding GPUN's. analysis and as a result of

-the discussions the staff advised the licensee of the following:

L 1)'

GPUN's schedule is very tight.

However, the staff will review the l

information but could not-assure GPUN that their schedule could be met.

2)

The staff indicated that GPUN should assure itself that the application of deconvolution in the soil-structure interaction (SSI) analysis is of consistent with assumptions used in determining the site specific L

spectra.

3)

In _GPUN's SSI analysis-the effect of deconvolution would be. limited to no

-more than 401 reduction.

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The approach GPUN is pursuing appears appropriate. The staff will reiiew-

- j the report when it is submitted and will probably have additional-

' i questions.-

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-4 4sM Alexa er W. Dromerick, Project Manager-l Project Directorate I-4

' Division of Reactor Projects - I/Il-E

Enclosures:

l 1.

Attendance List-2.=

GPUN Agenda and presentation i.

- cc w/ enclosures:.

Lii See next page p

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l 1 Mr. L. E; Fitzpatrick Oyster Creek Nuclear pyster Creek Nuclear Generating Station Generating Station g

cc:

i Ernest L.. Blake, Jr.

ResidentfInspector i

Shaw, Pittman, Potts and Trowbridge e/o U.S. NRC

-2300 N Street, NW Post Office Box 445 Washington, D.C.

20037 Forked River, New Jersey 08731

'.J.B. Liberman, Esquire Cosnissioner

~ Bishop, Liberman, Cook, et.al.

New Je'sey Department of Energy 1155 Avenue of the. Americas 101 Cunarce Street '

l New York, New York-10036 Newark, New Jersey 07:02 Jennifer Moon, Acting Chief i

Regional-Administrator,. Region I New Jersey Department of Environmental U.S; Nuclear Regulatory Connission Protection-

-475 Allencale Road Bureau of Nuclear Engineering-King of Prussia, Pennsylvania 19406 CN 415 Trenton, New Jersey 08625

<BWR Licensing Manager GPU Nuclear Corporation 1: Upper Pond Road Parsippany, New Jersey 070,54 Deputy Attorney General State.of New Jersey

. Department of Law and Public Safetf 36 West State Street ~- CN 112 Trenton; New Jersey 08625 g

L Mayor Lacey Township l.'

818' West Lacey Road -

j Forked River, New'Jerseye 08731 Licensing Manager L

Oyster Creek Nuclear Generating Station

- Mail Stop: Site Emergency: Bldg.

li P. 0,. Box 368 l

Forked River, New Jersey 08731 q

~ Mr. E. E. Fitzpatrick Vice Presid?nt.and Director p

Oyster Creek Nuclear. Generating Station L

- Post Office Box 388

?

' Forked River, New Jersey 08731 4

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! /L ENCLOSURE 1 0YSTERCREEKNUCi.EARGENERATINGSTATION DOCKET NO.150-219-i 1

_ MEETING SETPEMBER 27, 1989

'l ATTENDANCE LIST-NAMES

' ORGANIZATION ~

A. Dromerich-NRR,PDf -

.Hans Asher-NRR,ESGB/DET R.'.Rothman NRR, ESGB George Klinkiewicz Weston Geophysical U

, Richard Holf-Weston Geophysical Corp-1

6. Capodanno G?U Nuclear M.:.Sanford GPU Nuclear S. Tuminell.

- GPU Nuclear F. Orr -

NRR, PDI-4 Suren Singh N.J. State Dept.-of Env. Prot.

-Yosh Nagi-m John Stolz

. GPU Nuclear NRR/PDI-4 Raman Pichumani-NRR/ESGB/DET

-David C. Jeng NRR/ESGB/DET

.i Goutam Bachgi.

NRR/ESGB/DET Leo Reiter

NRR/ESGB/DET-

~

' Nick DiNucci N.J. State Dept's of Env. Prot.

M. Leggart GPU Nuclear

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OYSTER CREEK H

KUCLEAR GENERATING STATIO\\

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SITE SPECIFIC

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SEIS\\4lC RESPO\\lSE SPECTRA Il (L

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September 27,1989

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-AGENDA

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PROJIICT! STATUS AND OBJECTIVES II....

SUMMARY

OF DEVELOPMENTLOF SITE SPECIFIC n

RESPONSELSPECTRA/FOR 0YSTER CREEK NGS..

7

III.

TECHNICAL QUESTIONS 1

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PROJECT-STATUS AhD OBJECTIVES e

Wi 1911 GPUNLIDENTIFIED A NEED FOR UNIFICATION OF THE OYSTER CREEK FLOOR RESPONSE SPECTRA AND m

PROPOSED.A.NEW-SOIL STRUCTURE INTERACTION ANALYSIS- (SSI).

d 12/21/87:

NRCf/ GPUN MEETING:

1 NRC RECOMMENDS-TWO OPTIONS.

ONE OPTION > REQUIRES DEVELOPING A-NEW' FREE-1 FIELD SITE-SPECIFIt GR'0UND MOTION FOR THE OYSTER CREEK PLANT.

19-27-82 GPUN WILL PRESENT INFORMATION TO~-SUPPORT THE NEW SITE SPECIFIC GROUND SPECTRA.

FUTURE MEETING:

.GPUN~WILL PRESENT FLOOR-RESPONSE SPECTRA l

UTILIZING SOIL STRUCTURE INTERACTION (SSI).

1 CONCLUSION OF PROJECT:

TECHNICALLY JUSTIFIABLE FLOOR RESPONSE SPECTRA FOR OYSTER CREEK.

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OCNGS SSRS

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OPEN NRC CONCERNS FROM MAY 1988 4

. TALL BUILDING DATA COULD AFFECT RESULTING SPECTRA I

IN A NON-CONSERVATIVE MANNER-i 2

• SITE GEOLOGICAL CONDITIONS WERE NOT PRECISELY -

MATCHED l

= VERTICAL RESPONSE SPECTRA WERE NOT DILGUSSED l

j

• RECENTLY RECORDED EVEN.TS NOT ADDEQUATELY l

l ADDRESSED 1

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• GEOLOGICAL CHARACTERISTICS OF MORE.RECENT ACCELEROGRAPH SITES NOT OBTAINED 1

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,1 OCNGS.SSRS

~C DEVELOPMENT METHODOLOGY 1.

DETERMINE THE CRITERIA FOR SELECTINGL SEISMiG RECORDS. APPLICABLE TO OCNGS 2.

COLLECT AND CHARACTERIZE APPLICABLE-

?

RECORDS 3.

COMPILE AND STATISTICALLY ANALYZE THE i

RESULTING SUITE OF CURVES i

4.

VALIDATE RESULT AGAINST PROBABILISTIC SEISMIC HAZARD i

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OCNGS SSRS

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DATA APPLICABILITYLSTUDIES i

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OYSTER CREEK IS e

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THE ABSENSE OF L

EARTHQU'AKES OVER y i y-i ALMOST 300 YEARS o

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4 DATA FROM 0 TO 25 Km DISTANCES IS-VALID y

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..a; OCNGS SSRS DATA APPLICABILITY STUDIES TALL BUILDING (i.e. >3 STORIES) EFFECT EVALUATED BY:

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1.

SSI STUDY BY DR. YEGIAN OF NORTHEASTERN UNIVERSITY-BASED ON 17 SITES, THE RESULTANT SPECTRA ARE lNSIGNIFICANTLY INFLUENCEQ BY SSI 2.

COMPARISON OF HOLLYWOOD STORAGE BUILDING BASEMENT

~

l RECORDINGS WITH FREE FIELD RECORDINGS:

I SHOWS NEARLY IDENTICAL RESPONSE BELOW 5 HZ 3.

COMPARISON OF FINAL DATA SUITE WITH AND WITHOUT TALL BUILDING DATA :

l SHOV S SLIGHT INCREASE IN SPECTRA.- ABOVE 10 HZ L

1

OCNGS SSRS DATA APPLICABILITY STUDIES s

L IMPORTANCE OF PRECISE MATCHING OF Soli. PROPERTIES j

EVALUATED BY:

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1. DR. Y'EGIAN OF NORTHEASTERN UNIVERSITY STUDY SHOWS.

SMALL EFFECT (i.e. <6%) FOR VARIATIONS IN THE

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ORIGINAL (5/88) DATA SET i

l 2.

REVIEW OF 6 DATA SETS FROM COALINGA EARTHQUAKE IN

[

1983 ESSENTIALLY DUPLICATE THE 1987 LLNL RESULTS OF 48 COMPONENTS FROM A VARIETY OF SOURCES 1

KEY COMPARISONS:

MEAN MAGNITUDE MEAN DISTANCE LLNLi 5.13 ML 10.9 Km COALINGA:

5.20 ML 10.2 Km I

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RESULTING DATA.

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1 EPICENTRAL DISTANCE O - 25 Km.

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MAGNITUDE 5.3 +/- 0.5 l

ALLUVIUM SOIL. FOUNDATION THERE A.RE 73'HORRIZONTAL COMPONENTS AVAILABLE INCLUDING 10 FROM TALL BUILDINGS l

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OCNGS SSRS

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DATA SET; EVALUATION AVAILABLE DATA ARE A CONSERVATIVE SET FOR l

p APPLICATION. AT OYSTER CREEK i

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DATA ARE HIGHLY WElGHTED TOWARD CLOSE IN EVENTS EPANSION OF NETWORKS IN RECENT YEARS USE OF TEMPORARY AFTERSHOCK INSTRUMENT 2.

RECENT PRACTICES OF ONLY DIGITIZING LARGEST. COMPONENTS RESULTS IN HIGHER PEAK ACCELERATIONS 1

HIGHER SPECTRAL ORDINATES-

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.lDEAL DISTRIBUTION I

ALL DATA-

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RESULTS ILLUSTRATED. iN 1 OLLOWING CASES-

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SPECTRUM USING ALL 73 DATA LSETS

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SPECTRUM WITHQUT TALL BUILDINGS l

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SPECTRUM ;USING ONLY DATA FROM >12 Km a

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LEPICENiRAL?DISTANCEHAS.THE' STRONGEST

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BASEDLONLPROBABILISTI.C SEISMIC.. HAZARD ESTIMATE FROM LLNL (NUREG/CR-5250):

0C4SEP0 SPECTRUM LIES NEAR 85TH FRACTILE I

0FlA410,000 YEAR: RETURN: PERIOD 9

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PROJECT SCHEDULE 1

1 o-PRESENT SSRS TO NRC SEPTEMBER-1989 Lo; PRESENT SSI TO NRC JANUARY 1990 (TIME AVAILABLE T0~COME TO CLOSURE '

u WITH NRCLAND...

GENERATE

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IF NEEDED) o.

ENG RELEASE FOR ANY JULY 1990 NEEDED FIELD CHANGE l

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REPORT OVERVIEW s

GEOLOGICAL and SEISMOLOGICAL BACKGROUND

)

o

• Review of Geology and Seismicity 1

e Local Geology &. Stratigraphy e SEP Site Specific Spectrum-a n

SITE SPECIFIC RESPONSE SPECTRA 1

m:

L

-e Related SSRS Studies, i

e' Data Sources, Quhlity,' Availability c

e Sensitivity Analyses

- Effects of Epicentral Distance

- Effects of Soil-Structure Interaction 4

- Effects of Mis-matched Stratigraphies e Comparison with Probabilistic Hazard Study L

e Observations and Conclusions

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PROJECT REVIEW ll L

INITIAL MEETING - NRC/NRR - 25 MAY 1988 1

i L

e Presentation of initial SSRS Results

Conclusion:

"SEP Site-Specific Spectrum for OCNGS 1

was a conservative model for the l

free-field ground motion at the site."

[

i NRC/NRR STAFF -INITIAL REVIEW COMMENTS r

-e Certain Records Could Have SSI Effects e Site Conditions Not Precisely Matched i

e Vertical Component SSRS Not Discussed

• Recent-Accelerograms Not included

• Geologic Conditions at Recently Installed Accelerograph Sites Not Discussed u

Weston Geophysical J

g.

52.

% ^

q SSRS CR TERIA Establishedin letter (Dec. 16, 1987) to W. P. B. Fiedler (GPU) from Mr. A. W. Dromerick (USNRC)

MAGNITUDE RANGE 5.3 (+/- 0.5 or less) mbig DISkANCE RANGE less than 25 km SITE CONDITION Deep Alluvium w

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RICOR1SE.EC"'ON 3ROCDURE 1.

. initial search for records in the magnitude range

1. rom 4.6 to 5.9 M recorded on deep alluvium t

or alluvium sites at distances less than 40 km.

~

a 2.

Select most.aopropria';e records for SSRS for the OCNGS by comparison of subsurface conditions

- for sites that have measured shear wave profiles

[e.g.:as published in sUREG/C.R ~ 643, /CR-0055 and others, principally for the CIT Vol. 2 Accellero-L

- gram data base].

4 l-

. l 3.

Review more' recerr; acc'eleroa' ram data to identify records that fit the general site condition selection criteria. Accelerograph site conditions are typically j

reported as Alluvium or Deep Alluvium; no shear l

-wave profiles are given in publications on the more a

recent strong motion data. Data recorded at sites L

underlain by Alluvium or Deep Alluvium in the proper. magnitude and distance range were compiled for the SSRS analyses.

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! GEOLOGICAL AND SEISMOLOGICAL 1

g BACKGROUND-1 b

LOBSERVATIONS i

• Site'is Located in' Area of Low Seismicity

)

e NoLEvents within 25 Km (300 Year' Record)-

e No Known or Inferred Faults Near Site Le Nearest Rift Basin Border Faults (Triassic);

i;

> 30-40 Km from Site Lf e More Seismically' Active Region Located

> 30 Km West to North of Site i

CONCLUSIONS

• Seismic Grourid Motion at OCNGS Site

- More Likely to Result from Regional Event,

>-25 Km

'e Occurrence of Local Event within 10 Km of Site, Assessed to be Extremely Unlikely i

Weston Geophysical J 9

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Note on Peak Accelerations ~

lu CONCLUSIONS The observed spatial variations of the recorded peak accelerations -

suggest the following conclusions:

1.

The high frequency strong motion amplitudes during the 1 and 4 October 1987 earthquakes in Los Angelea appear to have been very coherent. The variations of the recorded peaks with azimuth and with epteentral sistance were governed mainly by tne raatation pattern or the eartnquate source and '6y the wave l

propagation errects through the three-dimensional geology of l

the area.

The proportion of random fluctuations in the recorded peak amplitudes was small, considering that the L

closest spacing of the adjacent accelerograph stations was more than 2 km.

2..The shape of the average attenuation function and the ampli-tudes of the observed peak accelerations are consistent with our earlier empirical estimates of the expected peak acceler-scions for M = 5.3 snd 5.9 saithqsakes in Southerg. california L

(Trifunac,1976).

3.

The data presented in' this note sus' gests that if the source mechanism and the effects of the propagation path are intro-duced into the empirical equations describing attenuation of peak accelerations with distance, that it will be possible to predict peak aip11tudes with much higher confidence than what is possible with the presently available methods.

TRt FVW AC

-(1999)

~

E O S PECTR A, Vel. 4, A. l 4

i

?-

a

. CONCLUSIONS A'preliminaryanalysisofpeak-horizontalaccelerationfromthe Whittier Narrows earthquake clearly indicates that the stound motions recorded during this earthquake were influenced by a complex interaction of source mechanism, building embedmont, site soolosy, and seography.

Source effects may have been responsible for'the higher-than-expected accelerations as well as some of the observed azimuthal variation..The correlation of peak acceleration with geography may have been caused in-part'by the gross soologic structure of the region.

Beyond distances of 20-30 km, the attenuation of peak horizontal

- acceleration-during the Whittier Narrows earthquake was found to be similar to that predicted from the attenuation relationships of Campbell (in press).

However, the amplitudes are about 65 percent hisher than predicted.

Understandins the true causes for the unusually high secelerations will have to await seismolosical studies of the earthquake, however, it is possible that factors such as a relatively shallow-dippins fault plane, relatively small source dimensions, a relatively larse depth of rupture, and an unusually hish stress drop may have contributed to this anomaly.

Source effects, propasation effects, and/or seologic effects may have contributed to the anomalously high accelerations--

relative to other accelerations from the same earthquake--observed at relatively large distances west. east, and north of the epicenter.

These azimuths also correspond to lobes in the MM*V intensity contour.

Al'1 sites tended to'hav'e about the same level of acceleration within about 20 km of the fault. whether they were located on deep' soil

(>10-m deep), soft rock. or hard rock.

Peak accelerations from deep-soil sites fell into clusters that correlated with distance and azimuth.

C A M P B E L t., K. W.

(.1980 b

EQ S P E C.T R A ', % i. 84, Md, 1

~

.... ~..

7,.

-1 132 a c.,,

t.

To see if the observed trends in Fisure 9 aisht be influenced by stography, both #R and R were plotted as a function of azimuth in Fisure 10.

This fisure indicates that all of the sites beyond 60 km are located north-northwest and east-southeast of-the epicenter.

Deep-soil sites and soft-rock sites also e,xhibited relatively high residuals at these asinuths at'similar distances..Both of these directions coincide with lobes in the MHsV intensity contour (U.S. Geological Survey,1987).

The

- northern direction also coincides with an inferred maximum in the shear-wave radiation pattern (Charles Bufe, personal communication, 1987).

It-

.is also possible that the relatively high accelerations observed at these distances are the result' of multiple phase arrivals and an increased influence of surface waves.

Thus, it is inferred that the a1 parent Aistance-dependence of the hard-rock residuals--as well as tse soft-rock ano aeep-soil restauals--is due, at least in part, to both source and propagation effects.

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t Site Specifie Respense Spectrum for the OCNGS: Compiete Date Set Magnitude:

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+/- 0 3 Distence i 15 0

+/- 9 2 O -

e Figure 3.12 wesion GeoDhYsical

%u i

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. C*un 310 Sate Spee.r e R opense Speetrum fee the OCNGS No fell Structures Magnitudei 5.3

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+/- 9 4 l

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+/- 0 3 a

~

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+/- 94 Figure 3.14 I

wesion Geophysscot

~

_. _.. _ _ _ _. ~. _... _. _. _. _ _ _ _ _ _. _,.,. _ _ _, _..

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16 68 20.

T IME (s e c ond s)

Free-Field vs. Basemerit Accelerograms at the Hollywood Storage. Building Whittier Main Shock l.

6.1 ' ML at 33 Km Figure 3.7 weston Geoonysicot

r;

).

/

p 4

w 10-

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1 10 10 10 70 Period (e s e o n d)

• • stno9og*fo g

60I.55i5 Hollysosd Storage Build.ng So.1 Steveture Interset.on Whaitier Ms.n Shock. E Comp.

Magnitude 6.1 ML st-33 1 Ka

• Figure 3.10 Weston Geophys# cot

.... -. _ _, ~ _ _ _.

x F.:

11 0[<

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1 10 10 10..

TO Period (s e c o n d) f!!!hhf/N Hollywood Storage Sv.lding Soil Structure Intereetion Whittier Main Shoca. OP Comp.

Magnitude 6.1 ML et 33.1 Ka -

Figure 3.9 weston Geoonymcat

+6

' h I?*

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i i

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10 10 l-1 Peried (6econd)

1. 6Gt)t3050

~4 i.5!5

• I Hollyeoed Storene Build.ng So.1 Strueture Intereetion Wh.ttier Mein Shoek. N Comp.

Magnitude 61 ML et 33.1 K m.,

1' 1.

1 1

l-Figure 3.8 Weston Geophysical

. ~

N I

i i

i l

1. wilifter Nelshi.

Plots of ## versus building height.are displayed i

in Fisure 1.

ror taas purpose, building heisht is characterised by number of stories, and embedded and steund-level sites have been combined in a single plot.

The plots fail to indicate any significant dependence of the residuals on outzsins netant.

i i

i I

t e

l e

C A M P B E L L,

k. W.

( l 9 B S)

EG S PECTRA Vol. '4, Ne, I b,

' e i

e

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Mesnitude's 5.4

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en. k$

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s.t.

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r.it Stroeive.

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t Comparison of Vertical Component SSRS Figure 3.21 wesion Geopnyscot

ffS i

i TAE.8 11 - Strees Meties Sata = Area 1 (Continued) hs. Aseeleraties Station Structure Epioenter Trigger Grad. Struet.

[

anna.

m _

12aa m aa' am**

tmar seat. at at tu R

a *="2== 'ar

==

28

• • 5

'a

• a

'.07 Cesswell Dam (9 sensors)

Op 0.03 0 60 0.04 0.10 T D 2**t'"***

2***r-

'8 '

1**

i gates oil Tard skate. A Op 0 07 13707 3. Broadway 360 0.12

.A tarhaak 24370 6-story 23 130 0.12 0.10 l

f1-

. Cal. red. Saviass bids.

Op 0.05 l

==

314s.

(13 mensors) to 0.09 0.06 p

Barhaak 24385 10-etery 23 40 0.12 0 31 Pamiyae Namor bids.

?

Op 0603 (16 sensors) 310 0.09 0.23 3 A Los Angeles 24157 Instr.

25 43 7 to*0.14 165 Saldwin tills shitr.'A Op 0.05 360 0.07 D

North sollywood 24464 - to-story -

25 42 7 90 0.04 0.07 R

Sheraton-Universal bids.

'Up 0.02

[

Ictel (16 sensors) 360 0.04 0.06 l '

Loss Beach 14242 Zastr.

27 44.4

-90 0.06 2ancho Los Cerritos ahltr. I Up 0.07 360 0.05 Los Angeles 24332 3-story 29 51 0.04 0.23 i

Century City Su11ook bids.

Up 0.02 0.03 l

t Department Store (15 sensors) 321 0.04 0.12 Century City 24389 Instr.

30 51.6 90 0.02 Los Angeles Country shltr. I Up 0.01 Club Worth 360 0.02 s

Loas teach 14311 5-story 32 90 0.06 0.20 l

CSUL3 Eas. Sids. 1 bids.

Op 0.02

(

, 9 sensors) 360 0.05 0.07 to 0.02 0.02 i

Los Angeles 24231 6-story 32 DCLA Nath-Soieaos bids.

Up. 0.02 Bids.

(12 sensors) 360 0.02 0.04 L

g.

e g.

TABLB A1. Stecas Motten Baba. Aftersboek of 4 October 1987.

I Mas. Aooeleration Station Structure Epteenter Trigger Orod. Street.

M

.30a

- tunaJimas gggg,ee,,gggg, gggg. jg),,, g g,g,,

- up A334 1

--z--

I. A Alhambre 24461 1-story 5

39 9 270 0.22 181 yresent Sebeel -

bids.

Up 0.24 180 0 18 f San k eine-24401 1-etery 6

40.0 360 0.21 181 I

~8outtuostern Academy b1dg.

Op 0.09 2600 Mosterey Rd.

270 0.18 R, MA Les Angeles 24468 8-etery 7

N Osska Admin. B143 bids.

i (16 sensors)

A Les Angeles 24400 1-story 8

41.0 360 0 33 182 Obregon park badg.

Op 0.09 270 0 35 A Altadena.

24402 1-story 12 42.2 90 0.20 182 Baton Canyon Park

. bids.

Up 0.14 360 0 30 1

g Les Angeles..

24463 5-et'ry 12

350'.0.24 0 35 186 o

8 ears warehouse bids.

Up 0.04 (13 sensors) 260 0.12 0.18 Q[gDowney 14368 1-story 17 270 0.06 183 i

County Maint. Bida.

~

bids.

Up 0.07 11283 3. Garfield Ave 180 0.36 1 R

• Calteet Seisato aaa asa ai-a a' '

a a

B Vault Up 0.09 Station 360 0.15 T D t.os Angeles 1803 1-story 22 43 4 360 0.14 184

-116th 8t.'Soboel bids.

Up 0.05 270 0.15 f.LosAngeles 24236 14-story 22

'90 0.04 0.08 Bel 17 weed Storage

. bids.

Up 0.03 Sids.

-(18 sensors) 360 0,07 0.13 A Les Angeles 24303 Instr.

22 90 0.06 Hollywood Storage shitr. I Up 0.05 Blds. yr 360 0.08

'd 1

\\

l CSMtP Strong Motion Data 81 l

's gs isig i

e i j sivig i

e i gising.

i i.

j TARZANA l

4' aa a

=

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=

=

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=.

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=

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+

asb ea a CSWIP DATA

. U808 DATA-g. 01 4,

p

- J0YNER & 900Rt (1981)

=

=

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t i fieset i

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10 100 DISTANCE - km 1

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~

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_.._...__,_.,,,__.m..__..

l-'

.... _... - - ~

w

.g

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.2.,

i 6 Aftershoeks. 5.2 Mg, i

e-at Station CHP.a=10 km 08 pe 2

e o'

0 06 O

LLNL (NUREG /CR.4861)

]

5.2 geste km l

w SEP c

O.4

.J './ '.

Complete Data Set, s.3 g, O

a= 14.She s.

.,*s y

No TtN Strustwes, s.3 M,

i a

g a

a=10 km (n

02

... " ~....,..............

i S.4 %ostikm 00 0

5 i

10 15 20 25 Frequency (Hg.)

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t i

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4.t.

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l Comparison of Various Horizontal SSRS Figure 3.20 weson Geopnyeol

\\.

l

,,n,,,,,., _ - - - - -,... - -,, -, - -, - - - - - - - ~ ~ - - - ~ = -, ~ ~ ~ ~ ~ - ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

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wesion Geophyucal

2.

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Period (s e c o n d) a 5 iot u o.ios Ovn$ ion

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10.000 reer cetven pee.co i

... ocNcS SEP Seeete um Figure 2.5 1

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r-'

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...............3

.................. 8 ANNUAL PRECUENC 0F EVENT Stseter than 8.0mg in the EUS t

Log Ne = 4.144 - 0.00 mg j

n C Cumulative Annust Rates l

+ instemental Annual Aales

+

t

. gg w

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1O i

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3

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{......................

10 i...............

l..

l....................

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j l

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10 40 50 60 7 0.,,

8 P

MAGN 1TUDE Figure 6-3 annual Frequency of Moderate-to-!.arge Earthquakes in the tus study Region er

..v+..

. ~...

- ~.

..----.m..

~m.

6W$

SQ

$1 A TI$ it t S Tfd b43 Mc 4.l94

.$0 mg N 7###'km I Rste

? s.3

. ass R.R u 4 pg.

i Ct3 ley e :

. is y i 98 m

" 1/4 k =

• Al a

re e ve = to A m l

Rsts t s.3 = 13 x to

R.R " 8C,000 vs.

8 O] Le3 '#, = /. Ilt

. 90 eny

" f, 8 f t km' are s : 25-to km Rate a S.1 = 2.2 3 x t i "

tt R ~ 4. seo y < s.

l L

k 6

g i

l

_ -. ~. _..,.. _ - ~ ~..... _ _ _.. _....... _. _. _ _..

G'

• M S N 83:M hESTON E0P>Ns! CAL P.5 r

SITE SPECIFIC RESPONSE SPECTRA

' OBSERVATIONS J

o Currently Available Strong Motion Data

[

for Moderate' Magnitude Events (~ 5.3 Mt.)

j' are Skewed to Near Epicentral Distances

• No Current Efforts to Determine Geologic Conditions at New Accelerograph Installations L

e Effect of' Epicentral Distance on SSR$

L is Substantial o Effect of Using'Bisemeht Records in Tall '-

Structuresis Small e Effect of Mis-matched Site $ratigraphies is Small Relative to Distance Effects

• OCNGS SEP Spectrum is Near 85th Fractile of 10,000 Year Return Period Uniform Hazard Spectrum 1

l-

,m

,, y}.y ;,,

m W

.w

. 4 :, }

~^~

L*>,.

p y,

f, f.

y

-DISTRIBUTION FOR MEETING

SUMMARY

' DATED: 10/10/89

. OYSTER CREEK N&]f,{$?N>

g L-NRC & Local.PDRs i

. Plant File i

S. Norris 0GC.

E. Jordan:(MNBB3302)

B. Grimes (9A2)~

1

3 NRC

Participants:

A. Dromerick

.i i

Hans Ashar 1

R. Rothman I

-[

F. Orr

'i E

John Stolz

'Raman Pichumani.

'l David C. Jeng

-Goutam Bachgi Leo Reiter-ACRS(10)'

B.Clayton-(17D19) cc: Licensee / Applicant Service List B

e f

i l'

l l"

l r

1 i

)

l

?

Y.

60

\\-

PU Nuclear Corporation,

4)

-The approach GPUN is pursuing appears appropriate. The staff will review

{

the report when it is submitted and will probably have additional questions.

RJ

\\

Alexander b. Dromerick, Project Manager Project Directorate I-4 Division of Reactor Projects - I/II-j

Enclosures:

'1.

Attendance List 2.

GPUN Agenda and presentation cc w/ enclosures:

1 See next page

~

3

[MTG

SUMMARY

OC]

LA:PDI-4 PM:R PD:P SN ek:lm JStolz 10/b/89

/jg/89 10/g /

j w

- - ~

g -

,,er-e