ML20037A645
| ML20037A645 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 03/06/1973 |
| From: | Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Muntzing L US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8003250657 | |
| Download: ML20037A645 (2) | |
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Docket'No. 50-307' MM 6 1373 NCIE TO L. ?'AT!IIIG MLTING RESOLUTIGi GT CRTSTAL TJVIR, UNIT Ko. 3 FLOOD LEVEL ISSUE Dames and Moore's proprietary computer program, Hurricane Storm Sarge Analysis, used to estimate the stillwater level for the Crystal River, Unit No. 3 nuelaar power plant is currently being reviewed by the staff and our consultant, Coastal Engineering Researth Center (CERC). CM C is also refining their own acdel to evaluate possible errors as discussed in the February 15, 1973 necting between the stnff, CI20, 71crida rever Corpo:ation cul their consultant Da=es and Moore. Review of the Dancs end Mcore model ar.d refinenant of the CZ:C nodel by the respective parties will be ccepleted about Jane 1,1973.
Ve ca' mot accept the precent Dc:2cs and Moore e n stillwater level eatinste of 29.6 feet nean low water (Fl#).
It is based en hurricane parameters which in cur opinica are not appropriate, and upon a r.athec:2tical model that has not been adeq zately verified.
There is no assurancs that clditicml refint +ce of the CIRC aadel or validation cf the Dames and Meere redel 2111 result in a still-water flood ic.ici alpificantly different then the one which the
- ff is already prertred to defend mi the basis of the inforcatien pr22ently available. sen ly 33.4. feet 577.
In fac:, it is possibic that retinenent of the CZEC model eculd result in an even hi;;her estimate. As a result of discussions with the applicant, Ca=cs and Mocre, and CEEC, ve believe that thn burden of proof for the tazes and Moore estim te cf 29.6 feet S R con and should be borne by the applicaur. The applicant, by letter dated 7ebruary 22, 1973, indicated that he can provide this proof within 60 to 90 days. 72 has assured us that refinmaamt of the CE2C nodel can also be acecaplished within this time frame.
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'. Hanning 'hmtzing M6 U3 L Reading EIGoulbourne RP Reading HDenton h '9 PWR-4 Reading ',;Gacmill g
A BCBuckley AGiambusso In substance, the applicant may proceed in cna of two ways. He 9
nay provida additional validation of his model and suleit it for v k furtber staff evaluatiors thereby incurring an additicual 90 day delay in resolving this matter; or he can inmediately proceed.*ith such design modifications as will be required for the plant to withstand a stillvster level of 33.4 feet MLW, plus associated wind-waves. If the lattar course of action is chosen, the applicant indicated by phone on February 22, 1973 that a significant economic and manpower inpact would result. For a 29.6 foot level he is planning no perunnent design changee.
(Ve would need evidence to support such an assm ption). For a 33.4 fect level he feels a dike and parapet nuat be added, now doorways cut, and a major drainage systxn installed.
Coats to do this could apprench 1.3 nillion
-dollara.
Reecer.endatien.
W prcpe:e to reepend to the L.mliaant's F brm T 22, 19 3 latter urgf ag a final rasolution cf the flood 1 "c1 by:
a.
F.ee.:estin:; thnt spacific additional infomation be provided by
- be applicant to de mnstic.to that the De 5 '!cere r M cl is v.:.'.il cud conservatively cpplied to this a.,plicatica.
b.
State that this information our,t be in our hands by May 1,1971 in order not to furthar delay the staff's safety c. valuation of thi9 sepect of their applic: tion.
c.
State that while the staff will objectively evclunte this additional data, it may er v.y not prcvide a reccenabic baris for significantly revising our cresent ascescnont that the plant should be desitned to withstand a Pl".I that produces i
I a stillwater level of 33.4 feet MLW.
l d.
State that the applicant must evaluate his design on the basis of I
our final assessment of flood level and provide specific additional j
information on all necessary design nodifications as well as showing adequate design margin in existing desian features which have already been designed assming a sti11 vater flood level of 24.5 feet MLW.
Origr.a! Sip ed by A. Giamousso A. Cia =husso, Deputy Direetcr for Reactor Trojects R$Boyd Directorate of Licensing ect SEEananer
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