ML20213C809
| ML20213C809 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 11/16/1978 |
| From: | Heller L Office of Nuclear Reactor Regulation |
| To: | Lynch M Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-0235, CON-WNP-235 NUDOCS 7811240105 | |
| Download: ML20213C809 (2) | |
Text
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RIBUTION:
CKET FILE (50-397)
NRR RDG 40Y I 6 S
_GB RDG ME!1DRANDUlf FOR:
M. D. Lynch Li ht Water Reactdrs Branch f4, DPli S
f FROM L. W. Heller, Leader Geotechnical Engineering Section Ccosciences Lranch, DSE
SUBJECT:
ROUND ONE QUESTIONS - CEOTECUUICAL EUGINEERIUC PLANT NAlE: UPPSS Mucicar Project f2 LICENSING STAGE: OL DOCKET UUI:3ER: 50-397 i
RESPOUSIELE BKANCH: LWK-4 P.EQUESTED COMPLETI0" DATE: 11/0/78 DESCRIPTION OP RESPONSE: Q-1 of FSAR REVIEW-STATUS: Awaiting Applicant Responses A detailed review ;qn been made of the FSAR Section 2.5 and its appendices as tendered in March 1978 by the Unchington Public Power Supply Systen for an Operating License for the Wachingten Huclear Pir..*t #2.
In order for us to complete our review, we need responses to the questions 362.5 through 362.9, as attached, and responsec to our cuestions 362.1 through 362.4 submitted in my memo to you on April 20, 1978.
This review has been made by Ouen O. Thompson, Geosciences Branch, Geotechnient Engineering Section.
OriS nal Signed by L+ g* Ecl10E
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Lyman W. Heller, Leader Geotechnical Engineering Secticn
~Ccosciences Pranch Division of Site Safety m.d l
Environmental Analysis I
Enclosure:
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362.5 During earthquake loading, the lateral pressures on below (2.5.4.10) grade walls can be large and approach passive pressures.
Show that the lateral pressures calculated using the dynamic coefficient (Kg) are adequately conservative by comparing the lateral loads from the dynamic coefficient methods with the lateral loads you calculated from the model for structure response to dynamic loading shown in Figure 3.7-14a.
362.6 The Poisson's ratio values provided in Section 2.5.4.2 and (2.5.4.2)
(App. 2.5D)
Table 2.5D-1 are not consistent. Explain why these values are different.
362.7 Provide the report of the studies relating to backfill (2.5.4.14) under Condensate Storage Tanks (page 2.5-144).
362.8 Provide a summary of gradation tests performed on backfill (App. 2.5H) material under Category I structures. How many such tests were performed?
362.9 Describe the method used to obtain unit weight (wet) values (2.5.4.2) in the Ringold Formation, as shown on Figure 2.5-64.
Provide a summary of the tests results and identify their source.
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