ML20132C365

Recommends That Seismic Design Response Spectra Rept Be Expanded to Include Procedure Used to Obtain Displacement Amplification Factors & Comparison of Upper & Lower Limits of Shear Wave Velocities of Densified Soil Profile

ML20132C365
Person / Time
Site:	Beaver Valley
Issue date:	08/14/1984
From:	Reiter L Office of Nuclear Reactor Regulation
To:	Knighton G Office of Nuclear Reactor Regulation
Shared Package
ML19283C868	List: IA-85-926, Forwards Rept of 840726-27 in-progress Audit Re Detailed Control Room Design Review (Dcrdr).Dcrdr Proceeding Satisfactorily.Concern Expressed Re Differences Between Unit 1 & 2 Control Rooms & Role of Human Factors Specialist ML20132B767 ML20132B791 ML20132C010 ML20132C076 ML20132C105 ML20132C131 ML20132C209 ML20132C245 ML20132C247 ML20132C253 ML20132C285 ML20132C290 ML20132C295 ML20132C301 ML20132C310 ML20132C323 ML20132C334 ML20132C338 ML20132C344 ML20132C365 ML20132C379 ML20132C383 ML20132C389 ML20132C394 ML20132C421 ML20132C427 ML20132C433 ML20132C442 ML20132C453 ML20132C459 ML20132C464 ML20132C468 ML20132C474 ML20132C479 ML20132C484 ML20132C487 ML20132C493 ML20132C499 ML20132C512 ML20132C518 ML20132C536 ML20132C542 ML20132C559 ML20132C569 ML20132C575 ML20132C633 ML20133M691 ML20133P834
References
FOIA-84-926 NUDOCS 8408200176
Download: ML20132C365 (2)

Text

-.

'o UNITED STATES g

! c NUCLEAR REGULATORY COMMISSION f ,I ,

WASHINGTON D.C.20555

{'  % ,,,,, AUG 14 934 1

MEMORANDUM FOR: George W. Knighton, Chief Licensing Branch No. 3, DL

?

THRU: i James P. Knight, Assistant Director for Components & Structures Engineering, Di FROM: Leon Reiter, Acting Chief Geosciences Branch, DE

SUBJECT:

SAFETY EVALUATION REVIEW - GE0 LOGY AND SEISMOLOGY Plant Name: Beaver Valley Power Station, Unit 2 (BVPS 2)

Applicant: DuquesneLightCo.(DLC)

Licensing Stage: OL Responsible Branch: LB-3, M. Leg, LPM Review Status: SER

. Docket No.: 50-412 Documents under Review: Seismic Design Response Spectra and Beaver Valley FSAR During a conference call on July 13, 1984 withthe' applicant (DLC)the (c . following subjects were discussed:

a) The procedures followed to compute the displacement amplification factors shown in Table 2-1, Seismic Design Response Spectra Report, Stone & Webster Engineering Corp. (SWEC).

b) The manner in which the BVPs soil shear wave profile was used in the soil amplification study.

Thestaffnotedthatthegeneralizedshearwavevelocityprofile(SWEC Report, Figure 6-2) was representative of the " upper bound" velocities of the soil as determined by the 1977 survey (SWEC Report Figure 6-1).

As a result the staff recommended that the SHAKE analysis which resulted inthespectrashowninFigure7-6(SWECReport)berepeatedusingthe

" lower bound" soil properties of the BVPS site.

The applicant agreed to address the problems mentioned and to elaborate on the methodology used to obtain the reported results.

The staff recommends that the SWEC Seismic Design Response Spectra i Report be expanded to include the following:

9 S4 GlqmnemQ XA $

AUG 14 1984

\ Document the procedure used to obtain the displacement 1.

amplification factors listed in Table 2-1,

2. Expand the Soil Response Analysis (Section 7) to incidue a comparison of response spectra using the upper limits and lower limits of the shear wave velocities of the densified scil profile (Figure 6-1, 1977 survey, dashed lines) at foundation level of the Containment Building.

This memorandum was prepared by Gus Giese-Koch, Geophysicist, Geosciences Branch.

Leon Reiter, Acting Chief Geosciences Branch, DE cc: G. Giese-Koch L. Heller

(~ ..

e 9

g 6

(

O