ML19210A571
| ML19210A571 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 01/24/1968 |
| From: | Morris P US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Neidig R METROPOLITAN EDISON CO. |
| References | |
| NUDOCS 7910300609 | |
| Download: ML19210A571 (1) | |
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Dis tribution :
AEC Document Room Formal Suppl.~/ # "
y 'o '. *ggg REG Reading Cochet No. 50-239 DRL Reading RPB-3 Reading Orig: FWKaras R. S. Boyd C. G. Long B. Grimes bec:
T. F. Engelhardt, OGC L. Kornblith, CO (2)
E. E. Hall, G!fR/H Iir. R. E. Neidig J. A. Harris, PI Vice President E. B. Tremmel, IP Metropolitan Edison Company Post Office Eox 542 Reading, Pennsylvania 19603
Dear Mr. Ueidig:
Three copies of a report dated January 17, 1963, prepared by the Advisory Co=mittee on Ecactor Safeguards titled:
"23. PORT ON T11REE ' FILE ISLAND NUCLEAR STATION UNIT 1",
are enclosed for your information.
Sincerely yours, Odp.21 EgrMd by P.nr A.l.!orns Peter A. Morris, Director Division c( Reactor Licensing
Enclosure:
ACRS Report (3) cc: George F. Trowbridge, Esq.
Shaw, Pittman, Potts, Trowbridge & :Sdden 910 17th Street, N. W.
'7ashington, D. C.
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ADVISORY COMMITTEE ON REACTOR SAFEGUARDS UNITED STATES ATOMIC ENCRGY COMMISSION WASHINGTON. D.C. 23545 DAN j7 jo'U aCJ TI J
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Honorchic Clenn T. Seaborg.
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U. S. /.temic ::ncr3y Cocaiccion U:.chington, D. C.
20543
Subject:
n 20n? C.! TIECU IIILE ISLC!D FJ0LC.'.7. STATIO ! U:*IT 1
Dear Dr. Scaborg:
/.c it ninety-third cesi.ing, Jeuucry 11-10, 1950, the f.dvicery Cormittoc en nocator Sciccuard: revic=d the prope:21 of the :::tropoli::ca Edicon Company to canotruct Threc ::11c I: lend Eacicar Station Unit 1.
Thic project had been concide. red previonely : Subec.= itece ra :::in3 held on Jcnuary 4, 1953, in Ucchington, D.
C., cnd on October. 19, 1967, in Ucrchey, Pa.
Darin3 its revicu, the Cc=ittca had tha benefit of diccussion: with rcpree nte.tiven cnd consulteats of the ::atropoliten ::dicoa C =pe.ny, the Ecbecch cnd Uilco:: Corjany, Gilbert A ::ciates, Inc., and the #1/C Regulc-tory Secff. The Co=itte cleo had avcilabic the dccument: listed belou.
The tation 1 located on Three Mile I:lcnd near the ccet chore of the Suce.uchanna niver in Dauphin County, ?c acylvanic, cbsut 10 mile: couth-cact of 1: rri:Lur3 Unit 1 i: c pro:curi:cd-nate:. ccetor pi.cnt, rated ct 2452 I :,:, cnd is ci=ilar in decian to the unit: circedy cppro;cd for con:truction at the rahe Poucr Con? ay': Oc co !! clear Otetion. Flood protcetion in to be provided at th: cito by ceitcbic carth dihec. Tuo natural-dr:ft cooling tct r: cro to be used for cc:denacr-natcr coolin3 The encr3:ncy core ccolin; cycten ('!CO3) incluC.
tuo cora flesdin3 tenha, tua independent lou-pro: ura sy ::.:, cad t;;o independent hi h-prc::urc 3
cystens. Tuo ecparato cystc.:: are provid.cd for contain=nt cohlin3 Cas cyctc= can':icts of three fen-coalia; unics, cnd the other conciste of tuo aprey cyctecc. The c?plicent etctcd chct cuitable end periodic cc pen nt and intcarated sy tca tc:t: uill be perforned on the:c cn3 ncerad Ocfety 1
festrucs. To further incurc lou c ntain12nt loch ratc, a fluid bicek systca and a contein. cat penetration prc: urinctisn cyctea are to be provided.
Op;rctica of the ECC3 is initiatcd cut 0: '.i.cc117 by redundant lou-prc: ure ci3nals from transducer cetuated by prc::ure in the t;:o pri=:ry 10sps.
The Cocaittoc reco ::nd th::: in th: ia:: crest of divorcity cnother nothod,
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JM I 71900 Eonorchic G1can T. Secborg different in principle frota the onc propoced, chould be cdded to initicts this function. The divorcity thun cchieved uculd enhcnce the probcbility thct this vital function could be initinted in the unlikel.y event it is nacded.
The output circuit of the proposed recctor protection cyctem consicts of a single d-c circuit (bus) fed fro.n tuo section batterica. Eoth feedero cuct be interrupted to de-cacr31zo the bus cad drop all rods. Fcilure to interrupt either fcoder, or any other cvent that provcato de-encr:1:ing j the cin3 c bus, vill inhibit dropping cil the rods. The Co mittco believes 1
this cyctea ccn cnd chould be rovined to correct the deficiency. The revised design nhould be provided for rcvica prior to instcllction of the protection cyctea.
The cpplicant hcc propoced usin, cartcin ci3ncle from protection in:tre-thc'. control and n nte for control pur,000cc. Th2 Concittcc belicve:
i protcetion in tru;acntction chould be ccpcrcted to the fullect c:: tent prccticcble, cad recom.nonds th. t the applicent exploro further the poccibility of nchin; ccfety in:tru.r.cate::ica core n:crly independent of control functions.
Concidarctica chould bc given to the de.valopacnt end utili::ction of instru-ucntation for pronpt actcction of 3ro:: fcilure of c fuel cicment.
The cpplicent de:cribed the rcccerch cnd devclor :nt vorh planned to '.onfira the final do:13n of the plcut. The Cc=itte: centinues to emphecisc the irepor:: caco of vorh to ccourc that fuel-rod failure: in lo:s-of-coalant cccidenta vill not cffcet significen::ly the chility of the r003 to prevent cicd c:lting.
The cpplicent is continuin; ctedic; on the pe:ci' ale uce of part-length rods for etchili:in; potenticl.acan occillctionc. Solid poison chics vill be cdded to the fuel elecent: if necc : cry to ache the to.dcretor tempercturo coefficient core ncactivo ct the bcsinnin3 of core life.
The P.c3ulatory Stcff should revicu the effects of bicudoun forece en core interacia cad the d:.valop :ct of cyprepricte lond coc.binctions cad deforac-tion limits. The no3ulctory Staff chould cleo revicu canis /ces of the peccible effcetc upon prcccure vo::cl integrity o'f thornci choch induced by ECCS operction.
The applicent has propo:cd corc *ccreci chech velves betecca the hot ic; cnd the cold le; to incuro propaz c,. crc.tica of th: T.003 under cil circua-ctanecc. Anclyticci c:.cdic: indic h thct vibrctica: uill not unscat the c vcivos du. in ; norncl operc.ticc. Thic poinc chculd be verifi:d c.:periment:11y.
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Honorabic Glenn T. Scaborg JAN 171960 The Advicory Conaittcc on ?.ccctor Safeguard: believes thct the variou:
ice =s concioned ccn be recolved durin; construction end that the propoccd reactor can be con tructed at the Three Mile Icland,cito uith reccon:ble coeuranec thct it can be operated without unduc rich to the health and cafety of the public.
Sincercly yourc, Originel niCntd b7 Carrell W. Zatol Carroll U. "cbcl Chairena
References:
1.
Metropolitan Edison Cc pony letter, acted Mcy 1,1957; Applicction for Recctor Construction Pconit nad Operating License, Metropoliten Edicca Company, Three Mile I: land nucicar Station Unit 1; Prclininary Safety Anclycio Report, Vols.1, 2, and 3.
2.
Metropolitan Edicon Company letter, dated July 21, 1967; /monacent Uo. 1 to cpplication.
3.
Metropolitan Edison Compcny letter, deted October 2, 1967; Aacadacnt
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No. 2 to application, incle. ling Oupplement Uo.1, Safety Analysis Report, Vol. 4.
4.
Metrepolitan Edicca Cocycay letter, dated I;ovcabar 6,1967; A=endacnt No. 3 to cpplication, includin3 C ;,ple.:ca t 1:o. 2.
5.
Metropolitan ndicon Company letter, dated reccabcr 8, 1957; A= cad: cat no. 4 to appliention, includin; Cupplement Eo. 3.
6.
Metror alitan Edi:.on Compcny letter, dated D:cc=ber 22, 1957; Amendment no. 5 to cpplication, includin3 suppleuant no. 4, 7.
Metropoliten Edicon Company letter, dated Jcnuary 8, 1968; Amendmant no. 6 to application.
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