ML20210T417

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Summary of 750225 Meeting W/Util & C-E in Bethesda,Md Re Proposed Rev to Design of UHS for Facility.List of Attendees & Documentation Encl
ML20210T417
Person / Time
Site: Satsop
Issue date: 03/14/1975
From: Oreilly P
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
References
CON-WNP-1760 NUDOCS 8605300200
Download: ML20210T417 (21)


Text

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,g c .~ - on rebruary 25, 1975, r.r -- - :=*ives of NFPSS, FMam, ard OzrN= tion U Wrela-ing met with the Imc staff in BetNah, Marylarx1. The meetig ins hald at wrP3s' rup t in ordse to ai-- -- their r w revisicm i % to the a-irm of the Ultiosta Heat Sink for NPPSS thelaar Projects Ib. 3 and No. 5. Enclomsre..No. I contains a list of attendees. w, w, n. ~ a l ,~

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..r f s S.....h Yl'%th JY* $ <44 >~1s?.*o M VN' e' i-l .w Jibasco described the 3 resent Ultimate Best Sink design. The present ~ - !h l design consists of a mahination ~of wet and dry coolig towers located ". en the roof of the >=r414=*y mildig for each unit. The propoemi design revision iculd use only dry r=14ng towers, which would be hr=*=d on the Anr414=ry mildig roof. (see nv1 = $re No. 2). 1 .c i* Ebeeno than described how the mobeca:ological A-ip. bases for the present Ultimate Heat fdnk were obtained. The 20-year set of J,_ me*=<=nimin=1 data obtained at Olympia was used to obtain the ^N i me*=r=elenical design beans. ma mathed used to esctrapolate the '/ l amt of 20 years of data to a 100-year recurrence interval was described i by Ebasco.

nstbod. 4._describel,in,.hel-n1LNo.,,3.,Jaig,this method, "ce6 mist'n'HisiclyisitEdaTa ~iiFthii~ data o'Eni5ed'onsite or a maximum tangerature of 108 E' was obtained.

~ made to ~ No attempt was L with limited data availahh fecm Elma. Ibasco described a penhah414= tic ~ 9 '.) +=r+=irria that was used to 'aggart a==vi=== 'em.ae of 93.5 P ,,;diddch they proposed to use Scar the revised Ultimate Heat Sink design. t ~ Details of this y 4= hili =*ia argoment are also dancribed in Enclosure, x . ; G N..,3 - ) y Q~.h.- Q., h Q. Q : :+ Q.., f Y ',: n g : *'.: ' f n: c e. .m fin response' to our'irrpiry '4nimm stated'that, if the eWEic i temperature exceeded the da-fem basis Inavin= tarperature for the dry emling towers for a sufi'iciant paHed of timo (about 4-G hours), - the capability of the Ultinata Beat Sink to functica in the event of l ', f an.=r"4Aarit might be inpaired. ~. 1 ,o .a. .., S,cy:i v...' As.W N N.- ; k,2, ;'$.. ': ' A @w

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~ e: ~ / MAR. I 41975 o O e 3 -a. c e- ' Die reconnandations of P=an1=+~y Guide 1.27 ranawlirig the r t.w,ulogical i I da=ip bases for the Ultimate Heat Sink were then diam = mad. M, - ;, s i .c ,..-..,...a.x..wL ~ nm .-..t.. -,....,c,.,.<.. c. s -( h -= 'x /Cl@1 design bases for the' Ultimate Heat Sink would be considered. -. %, A ,E t i (

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;,L(1) c se an appropriate historically recorded maximum temperature frcm i,W s

. the region, i n temperatse,near the ide a staEiiiiiirrit.~that Olympia recceded 103 F.sitq(10 ans~3ew M,J 3 ' J,A 2 q. - 4 T6 Jas the highnet temperature.c ~,4' wo m, A, ~.. -,c^ y;_ 3 f ? + a.s

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' > ~ s. i ^ recorded at Olympia, <==4A= ring wwp.. late ecI1fidencei. intervals, i to demonstrate that the 103 F m=4==i taparature recorded"~ ~ l' % 04"'."12 is "'": :.Wativa cf sits carditicrs than t.he e,, ,7

105 F ramrdad at Elca. Use the'103 F taperature in the Ultimata Heat Sink dee6pn., a_,.,y

., s J,% -.u.+,...,.p, s.. ~.m.c.m;y..x.o,.,w~.~.,- ~, --? n n- ~ l q (3) Use the y---Idl14=e 4, = -w=4 described, *1 Ming 'a-isi all -- -.; ate t*- emf'idarion intervals. The worst,==iM= conditions ~ ~ l reammable combinations thereof should be used (Icss of cffsite ~ ~. r power, earthquakes, =i==41ma, +---=+3= es, high winds) along l With the gper confidence ilmits. i 2 j . (4). Use a 2cuer==vi== '.-- he (such as 93.5 F) and show that 32 i the casequences of exceeding this temperature are ar-e=him, i $ s , Q p.R - '.. \\ l;. m; L ~ Original Signed by ".A$ . Patrick D. O'Reilly j ;. d. f g r ,.,,. ;,4 ce., ,.3. ,a -N r e . 3 .c q- - e ', y. A. M... y.M G ;.Q:n Patrick D. O'Reilly r l .f w sc y. ?yE ,,j' a 'Y.,j g ,.,. i t, ~&p. & ~

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( j. i ENCIDSURE 10. l-ATI'E20AtCE LIST WASEDUKN PUBLIC POWER SUPPLY SYSTEM i i D. B. Whitford G. Soreisen l O'EBUSTIN DGINEERDG, DC. C. B. Brinkman EBASCD T. Raney J. Silvey P. Astor J. Fill 4an E. Chan W. Moritz W. Rezak A. Wern R. Nouran A. Barchas NUCLEAR REGJLA'IORY COMISSIN P. D. O'Reilly F. Kantor C. Y. Liang W. Bivins T. Johraon D. L. Milliken R. Kornasiewicz L. G. ntiman J. E. Fairobent I l l l I P I I l 9-


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