ML20140H042
| ML20140H042 | |
| Person / Time | |
|---|---|
| Site: | 05000231 |
| Issue date: | 03/18/1969 |
| From: | Hanauer S US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Seaborg C US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20140G249 | List:
|
| References | |
| FOIA-97-34 ACRS-GENERAL, NUDOCS 9705120297 | |
| Download: ML20140H042 (2) | |
Text
ADVl'SORY COMM.TTEE ON R.EACTOR 9 73.A A?,s I
UNITED STATES ATOMIC ENIRGY COMMISSION 9
WASHINGTON. D.C. 20545 idEc.ie,1969 o
IIonorsble Clenn T. Scaborg Chairacn U. S. Atomic 2ncrgy Comiccion Washington, D. C.
20545
Subject:
Pc::PG2T ON Ti!3 SOUTil:EST 1222RDCNTAI. FAST OXIDC PCACTCR Deer Dr. Scaborg:
At its 107th macting, March 6-3, 1969, the /.dvicory Comittee on Eccctor Safeguards concidered the cpplication oJ the Concral dicctric Cc=pcny for a provicional operating liccace for tha Southwest 2::pericental Fest Oxida Rocctor (S FCE). Operation of this facility at steady-ctate power levels up to 1 !!acewatt van discucced by the C=nittee in its report of Octo-ber 10, 1960. A subcoc::aittoc of the AC2S discucced the proposed SEF02 operation on 11 arch 5,1969. In its current review the Co=ittee had the benefit of diccuccions with representctivao of the applicant and the /CC Regulatory Staff, and of the docu= cuts licted.
Tho final dccign provisions for protection of coro intcarity accinct pri-c:ary system lecks do not coct all the criteria proposed by the applicant during tha construction parait revicu. For excepic, in the unliucly ovant of a large pri= cry cycto:2 lech, ciphon breaker cetion will not be adequate to prevent the core frca becoming unscvared tc=porcrily cnd to prevent in-torruptica of ficw in the cunilicry cooling cyctcm. D2pendence for core cooling in thic unlikely event wocid then be placed upon the ability to re-plonich the codiu:2 supply in tha rocctor vaccci via the pump-around-loop, cnd the ability to reprima and initicte cooling via tha cuxiliary coolin3 cyatc=. Licvarth:1cca, the AC20 belicvas the provisions for coping with pri= cry cyctes leaks to ba ecceptchla in visu of the low steady-ctcto power cnd power density of the core in the proposed c::paricantal progrca, and beccuse of the other en31ncored cafety features of tha facility. Eca-over, for significant chances in power density or level, or for extended operation concidarably baycad the expericantal procrca doccribed in the curront do:umentation, tha Co=ittoc believec that further reguletory re-vicw would ba appropriato.
884 i
i 9705120297 970505 PDR FOIA l
VARADY97-34 PDR s.
Honorablo Glenn T. Ocabora.
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Guidelines for determining actionsfin the event of enocalous behavior have boca propoced. Prior to operation ce full powar (20 MUt), tha l
' op licent and the acaulatory Staff chould carce on quantitative def t-tr ticas of suitablo limits on uno::plained behavior of reactivity, coolant comparaturcs, and other parameters of significanco.
l Ths primary cyctem does not currently include a sc.mpling station that l
parmits routino monitoring of the codium' for ficciou product or other inpuritics of significanco. Howover, tho applicant otated that he will attempt to prcvido, at an early dcto, equipmont thct vould enabic tha oport.cora to obtain samples much more frequently chan is now p.ac-tical. ; Locause of the potential uccfulncas of relatively frequent sam-pling in characterizing impuritics in the sodium and in diagnosing and undcratanding the probablo status of fuel element dofacts which acy arise during roactor operation, the Cocaitteo recommcada that such equipmant be made available prior to the start of 20 Mut operation.
Before operation at full power, the applicant and the Regulatory Staff l
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.should also cgree on the necessary doccction stops and on specific l
critoria, and the basco thercof, for judging the acceptability of con-tinued steady-state operation in the presence of a known loss of fuel clad integrity.
The ACKS belicvec that, if due acconcion is given to the foregoing com-monts and if experience in the stopwise experimoncal prograa is favo'rable, the S2FOR reactor can be operated at stcady-stato powers up to 20 Edc and in the pulsed moda, as proposed, without unduo risk to the health and I
safety of the public.
Sincoroly yours, Original. Signed by l
Stephen H. Hanauer l
Stephen H. Hanausr Chairman i
References attached.-
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!!onorable C1cnn T. Secherg 3-
" N' i%n ne feronene. - southout ?xnerimental Fast Oxido n'enetor - (SEFO'O 1.
Latter from General Electric Company, dated October 9, 1963; Amand. tent No.: 23 to License Application 2.
Lettcr fro.n General Electric Cc=pany,- dated November 1,1963;
/m nd.sant No.~24 to License Application 3.
Latta Tro:n concral Oloctric company, dated Deccaber 10, 1950; hunda.ut No. 25 to Licence Application; Supplosent Co. 21 and Srrato 4 to FDdAR
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4.
Lotter from Concral Electric Company, dated January 14, 1969; l
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Amandcont No. 26 to Licenzo Application 5.
Lettor from General Electric Comycny, decod Jcnuary 24, 1969; Amendment Co. 27 to 1.icansa Application; Supplemant No. 22 and drrata 5 to FDSAR 6.
Letter tro.a concral J.lectric company, dated January 31, 1969; Proposed Tochnical Specifications for 20 Et Opcration of SEFOR r
7.
Letter fros General Electric Company, dated February 20, 1969; Amende.cnt No. 28 to License Application; Supplacant No. 23 and
. Errate 6 to FDSAR Letter froh Cancral 21cceric Company, dated February 28, 1969 i
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