ML20210B403
| ML20210B403 | |
| Person / Time | |
|---|---|
| Issue date: | 03/14/1960 |
| From: | Silverman L Advisory Committee on Reactor Safeguards |
| To: | Mccone J US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20210B278 | List: |
| References | |
| FOIA-86-346 ACRS-GENERAL, NUDOCS 8609180066 | |
| Download: ML20210B403 (3) | |
Text
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ADVISORY COMMITTEE ON REACTOR SAFEGUARDS UNITED STATES ATCMIC ENERGY COMMISSION ,
- WASH IN GTON 15. D. C.
5 March 14, 1960 i
Bonorable John A. Necome Chairman U. 8. Atomic Energy Comeiosion i
Washington 25, D. C.
Subject:
REW PRODUCTION REACTOR CONFIEDENT 51 ST
Dear Mr. McCone:
h The confinement concept for the New Production Rosetor ttag propos Oeneral Electric Company 6 for use at annford f tsa I
in Washington on March 10-12, 19 0.
8 on the NPR had discussed the eencept References pertinent in todetail with representative the proposed In arriving the General Electric Company.
t of XPR Confinement are listed as an attambeent to this letter.
j at the viewpoints espressed herein the Comunit ;
Licensing and Regulation. t The saliest feature of the design oosoept y.ra::d for the coafiasmen of radioactive products released fron'the, reactor in the event of major rupture in the coolant system and failure of all emergeoey d with j j
cooling is the use of a low-pressure buildias structure provide She '
steam vents rather than the more conventional sostat====st sphere. ure vents are coaled with diaphragme which rypture at ad moderate with press to release the steam to the staaephere, and are also equippe l s spring-loaded butterfly valves and a backup water l tion sealofwhich e oo
, after the steem eurge and seal the building prior to the evo u fission products resulting from seltdown of fuel elem t of thecoolant.
confinement program now under way at the present Emaford re It was chosen by Gomeral Electric la preference to full contaisse because of its lower moet.
The major elements of immeertainty in the p..,d confinement sch l are: 1) whether the time separution between the esempe l of ste the evolution of fission products will follow the assumed pattern a i
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f I i 2- 3/14/60 Bonorable John A. Mecone
Subject:
'EPR Confinement t tion theeventofanactualaseident;and2)thepossibilityofamiune of the valve closure in one or more of the tenf ste evolution of fission products, of the ter Prodne-Although the cononittee feels that complete con +=i====t t . ,
I tion Rosetor would afford a W gher degree of off-site protection agains .
the consequences of a major reactor accident thma the eg:: ld ' confine-ment structure, it recognises that sentain= mat of this one re It also recognises the act greatly change th be difficult to justify on an soooomic basis.
ki probability that the EPR will have a greater degree of inharest- saf than that possessed by any of the present prodnetion reactors. .
I i It is the conclusion of the Advisory Comunittee on Remotor Saftqua the confinement structure proposed for the Buw Production Boeotor, .
not suitable for a less isolated location, will prov ii l
by the building structures around the other Emnfo
- ( cantly increase the present hasards of the Emaford operations.
Sincerely yours, laslie Silverman
. Chairman ect A.R.Luedecke, GN
- V.F.Finan, 09(
i B.L. Price, DIAR l
l I
6, e i
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( -3 3/14/60 Eamorable John A. McCone
Subject:
RPR Confinement ~
70eferences v IDi-6k156 . March 3,1960 (tanelassified) vs.63280 . December October 31, IM 9 (s) 19, 1959 (s) v W-62435 Ausust 21, 1959 (s)
. w-61628
- W-607k2 RD2 - August 10, 1959 (s)
W-57668 . october 3,1958 (s)
- 1. w-54492 . .h==v 31, IM8 (s)
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