ML17252A664
| ML17252A664 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 05/13/1981 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Abel J COMMONWEALTH EDISON CO. |
| References | |
| TASK-09-01, TASK-9-1, TASK-RR LSO5-81-05-022, LSO5-81-5-22, NUDOCS 8106010479 | |
| Download: ML17252A664 (3) | |
Text
- ,*.
- ** Mr.. J. S *
- Abel
- o; rector o.f Nuclear Licensing:
c*omrnonweal th Edi son Company Post Office Box 767 Chicago, Illinois:
- 60690
Dear Mr.* Abel:
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. Duri.ng the Systematic Evaluation Program review of the.seismi:c analysis
.o'f the Dresden_2 and.3 spentfl.lel poo_l racks.wehave identified an, area that...
requires additional*. information to pet"lllit us to evaluate. Systematic Ev.aluation Program Topic IX-1, Fuel St6rage.
- please p~vide. thejnformation requested~in Enc.losure l.within*14 days
. * ~f you~.receipt of this: letter.*
- Ehclosure:
- As stated* *
~cc w/enclosure:
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.. **r;Sn e~ly:,
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- enn.1s M.* Crutchfield,~
Operating Re.actors Branch #5 Division of Licensing_.*
See next' page *
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... May* 13, 1981 *"'.::
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- isham, Lincoln & Beale
. Counsel ors*.at Law
- One Fi.rst Natic>>nal Plaza, 42n*d Floor.
Chi~~gci~ ~llinois §0603 *
.. ~1r~ -B. B~. Stephenson
.
- Pl ant Superi nte.ndent
.* Dr.esden Nuclear Power Station Rural. Route #l
. Morrisw Illinois 604~0~
N~tural Resour~es Defense C6unci1 *
. 917 15th Street-~ N.
w~.'
Washington, o. c 2ooqs
- U~ S~ Nuclear.Regulatory. Coninission
- Resfdent Inspectors o*ffi ce.
- Dresden Station*
- *.RR #1,
- .Morris, Illinojs 60450 *
. SUsa*n-*N. seku.ler.. '-*.-.'_. -_*.. :*.
Assist ant Attorney General.
- Envfronmental Control Division*
-188 w. Randolph.Street., *
- Suite 2315.
- Chicago, Illinoi.s 60601
- Morris Public Library.*
. 604 Liberty Street
- /
- . *. Merri s, Illinois 60451 *
. ch a i rma n. ' '. *.
- Soard*of: Su.pervisors of
. Grundy County *.*
...... Grundy County Courthou~e.
- 0cirris, Illt~ois
~0450 *
- .JohnF *.
- Wolfe9*.Esquire 3409*. Shepherd Street Chevy Chase~ Maryland'.. 20015 *
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- Dr. "ti.nda* w~ Little soo: Hermitage* Ori ve.*
- Raleigh~ North Carolina 27612*
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. Department of :.Public Health ATTN:. **Chief~ Division of Nucle.ar Safety 535 Hest Jefferson
- Springfiel.d, Illinois 62761~*
bi rector, s'tandards and Cilte.l"ia.
Division.
- *Office of Radiation*Progr_ams*
.... * (ANR.-460). **
- . u. s~ En vi ronmenta lProtect fon Agency
- Washington,.o. c. 20460 U.
- S. E.nvi ronmental *Protection*
- Agency*
Federal Activities Branch **
Regian*v O,ffice ATTN:
- EIS COORDINATOR 230.. South Dearborn Street
- Chicago, Illinois.. 60£.04*
- Dr. Forrest J.* Remfck
- .. 305 East Hamilton _Avenue~..
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- *sta~eCollege,* Pennsylvania.* 16801.
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- DRESbE.N 2* A::o:3.:si'ENr:*FuEL * * *
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- POOL STORAGE' RACKS REQUEST FOR ADDITIONAL* INFORf*1ATION..
SYSTEMATIC EVALUATION PROGRAM* BRAHCH l)
- Verify that the** horiZ'ontal ve16city usecf in t~&--rack-to.,;r.aCk impact
. evaluatfoli was that from.the:'nonlinear analysis of ttie empty rack
- with the. 2* coefficient of frii:t ion. between the rack legs an(f.pool
.. floor~ Revise Table 3.4:-2 to*reflect any in.creases* in stresses in the" overall. rac'k structure under. such a condition, as appropriate.*..
Clearly state and jµstify all assumptions made* in your analyses.
. -2). Pr.ovide-tne: results '9f* yo~r.analyses*. to *demonstrate th~t 'the 4.625
. ' inch mi nimurri gap between the racks :.and' pool* wa l1 is: adequate {pro-
- vides for the
- minimurri f(!Ctors.,of safety a_gainst impact stated in
- Standard Review Plan ~ection 3.8:.5) considering both rocking and
- sliding of the racks under all postulated ra.ck loading cor:iditi.ons. *
- and considering.the variations* in. the_(:oefficient of frictio.n be-
. tween the rack feet and pool floor*..'* lf. such impact cannot be pre-*~
eluded, demonstrate that the focal: and gross effects on the racks and pool wal 1 are acceptabte.. Revise Tables 3*.4-2 and* 3.5-2 -to reflect any.increase in loads an*d stres~es, as appropriate *. Clearly state and justify all: assur:nptions made.in your an~lyses...
.**. 3}. cci~s,idering' both rocking and sl idi'ng.:of the racks_ ~nder all' postU".'.
lated rack loadi!19 cond.itions. af.ld considering.the* variatio~s in, the.
coefficient :of friction -'between the*:rack feet and *pool floor, pro- * *...., *
. ~._ vide.the results of your analyses.to demonstrate.that* the local and
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- ". 'gross effects of the uplift and resulting impact. of the rack.legs
. *with the pool floor ate.acceptable for both the rac:kand pool slab structures.
Revise Tables 3.4~2 and 3.5.. 2 to reflect any increase in loads and stresses, as appropriate.. Clearly state and.justify.
. 'all assumptions.made,i.n your analyses*.. ".. *. :..
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- 4.
For an. loading conditio.ns.cC>nsidered. in.the.abo~e.analyses,. pro.vide.
. the locatiol'l of; the center of gravit.Y assumed<.. > *
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