ML20037B314
| ML20037B314 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 04/04/1962 |
| From: | Lowenstein R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Joslin M COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8009150486 | |
| Download: ML20037B314 (2) | |
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- 9. :*:rray Jeslin 71ce rusidt.nt Gentle-sen s' By a letter dated Move:aber 27, 1961, the Cossamousalth Edimon Campsay'iss ter>aasil.ted to t:4 rivision of licensing and Perstattee a re-ort arttitled **eneter reclosure ~Aak Rate 7sst" and a supeerting recort ny the Chicas;e Bridae & Iran Cespany entitled %aance 3ata setermiaation - Essetor Cos-taiaisent lessel - Wetten tieclear iower Anties'. These recorts have been sabaitted ;nrnaant to Section 3-11, appendix *1' (*echnical 3pecificatioca) to Licenze PP!-2, o vended.
N test mits Ladicate that at the test pressure of h.33 psig, t leatage rate of 0.06% per day cf the contained free volume 1sas m aared. Ica have relatad this rate to an aatteipated M4e that would esear at 37 peig and have sempered the latter with the rete spesified for that prosaure la the Teekaical Specifications. Taar analysia indiaates that a leak mte of 0.0S$ par day eenid be anticipated at 37 peig. As sen kasw, aar tested.ges for omtrepelatist 1sekaso mese hr ese af oriftee egnations or minne methods is open to sen- , jesters as to how realistis and ammewsta the asiasted method miskt he. Isfamaties provided W the Divisian of an=pHm=== inspeeter reporttaa en a Demanh-5,1M1 visit to the Droeden Emelear Feuer Station ladicated that yes have assumed critical f3sw rela %'emakipe ta year aanlysis. 'de believe that ferada-tisms based on assemptiaan of them plate oriftee flew ropeesent a eleser s.y.. imaties to the esistias physical fles W. Ustag this latter model, een usald espoet inakoge te very as the saare mot of the internal,weesure, and senoegnestly that the Isak rate estespolated to 37 peig unald be higher than
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====d= Hat of flatare tankage tests we regseet the fb11ering addi. tiemm1 inteoustians (1) The anthountiaal formulations used to estanlish the rela
- h H r detmeen lask rates at k.33 pela and 37 Paig.
(2) The parnastern used to obtata the saaversion f*ctor of 1.15 (3) The justification that the mathenstical forestation la appropriate rar aae in tais ;hysical cit.ast.ica. Ica 5sve indicates 1 we latantica of determinias leasage of isolation velves whien de not require sphors pressurizatica fer lear detection on aspsestantely as anneal basis for the parpose of a
- M an repair of such valves. P.trsher, yem ind1:ste ;4lans to commet sa interral Imak rate test seastian in *.he Fall of 17tM. Ansadix *t',
<ctii,a 3-11 rec 3tirca that *after a study sf .a realta cf _ts above Isakage testlar and diseassion 9f these naults with the AXC, the fatore program of testing will be accred to'. Aeeardingly, we beliew %t Section 5:-u of *.he Gr-eden fee'nien1 beifica-Lias sneuld now a< aeocac to ;,roeiwe ;;or periocL: au rat.a ;esu of the c.omtainment. We have t4atatively cencInded frca our review of year report of "my 27, 1961 that the nest !ategral Isak rete test should be eendested sooner them thee Fall of 1966. M will be happy to entertain any ;,. ;:-1= from e - ith Ediana la this regard abuitted as as appliestic.a ammadment reques'.iag revisien of Section 9-11 of the Thetunical Specifications. This appliesties easedeemt should ime3nde the specifie details of yuer propoemd testing program for the oestainment shall and penetrettama. The tafbruaties requested akseld be enheitted withia 40 days with an erisiaal plas tese espies adamed under eeth er affirmatism, and 19 additteeni sopies. Seneerely yours, metritation F. A. Amrria-2 g 3;;ng Doc. Room ey a, wenn.n. Formal Suppl. Directeur LB-IAR readings Divin8m of Licesslag and itegt3aties DIAR ., DL&R DIAR, CGC / DIAR emcr,, g mi R Di sum = >. . 31.?81.6? 3W,4h.. k 'b h\\n\\ & _p/d2-om >. v-- g
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