ML20037A946
| ML20037A946 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 03/24/1964 |
| From: | Lowenstein R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Bower D COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8008250812 | |
| Download: ML20037A946 (2) | |
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MAR 2 4 ;;g Docket No. 50-10 havealth Edison Ccepany 72 West Adams Street Chicago 90, Illinois Attention
!@. D. Bobert Bower Treasurer Gentlem n:
At a meeting en March 3,1964, between representatives of Crermenvealth Edison and the AEC's Begulatory Staff, the sub *ect of containment testing icr Obs 1resden Juclear 2c.er Jtaticn reactcr vaa discuscea.
2he discussion centered arcund the need for an integrated leakcGe rate test of the ccatainment in the very near future and also the need to develop a suitable pztgram for containment testing on a img term besis.
The following items were identified as basic elementa of such testing progmass l
l 1.
Specification of the allevable leakage rats (by weight) at design pressure.
2.
Use of a sufficiently high test pressum fe the integrated leakage tests and the use of a ameningful artmpolation of the test n eults to deci p ce postulated accident pressures.
3 Periodie individua'. leakage rate testing of the een+ min==nt yemetratices which -=1cate directly with the envir===nt, such as the air
- locks and ventilation valves.
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Periodio leakage deteetion tests of centain==nt penetrations which communicate to ciceed systems, such as main steam line isolation valves.
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Es*=h14=h==nt af a fwguaney for periodio integral retesting et the centm % t sphere until such time as a long term testing program has been formulated.
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- m.m As was pointed out by Commonwealth M ison representatives, the incorpora-tien of design features in containment penetrations which would permit individual ccarpcment leakage rate determinatica at design pressure con-ditiens wculd be expected to significantly increase the period at which integrated leakage rate tests would be necessary.
In view of the ecmplexity of the problem of centainent testing and the need for develcpment of adequate technical specificatiens relating to such testing as soce as practicable, we would appreciate reviewing any propesals which you may wish to submit in this matter at your earliest convenience.
~ihe possibility of changing the containment leakage rate requirements was also discussed with you. We vculd censider er.y prepesal in this regard that you =ay wish to present tcgether with a =odified accident anslysis incorporating the i=portant features of ycur propcsal.
Sincerely yours, Orip.nl Crd h 1 L:n.u!ais
.N. m tcr Divisien of Licensing & Regulatien l
CC:
Mr. Eugene Eailey ddministrative Insineer l
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l bee: R. H. Eryan i
E. G. Case R. Boyd R. Maccary Distribution Dec. Pa.
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