ML20235E704

Requests Analysis & Proposed Tech Specs Re Significant Change in Shape of Scram Reactivity Curve Which Could Occur W/Core Burnup,Variations in Fuel Enrichment & Configuration of Gadolinium Oxide in Core within 30 Days

ML20235E704
Person / Time
Site:	Dresden, Quad Cities, 05000000
Issue date:	11/14/1972
From:	Skovholt D US ATOMIC ENERGY COMMISSION (AEC)
To:	Butterfield L COMMONWEALTH EDISON CO.
Shared Package
ML20235B311	List: IA-87-111, Submits Rept on Plant,As Discussed in ACRS 150th Meeting on 721012-14.Listed Items Can Be Resolved During Const & Facility Can Be Constructed W/Reasonable Assurance for Operation W/O Undue Risk to Public Safety IR 05000254/1972009 IR 05000358/1972003 IR 05000358/1973001 IR 05000358/1973002 IR 05000358/1973003 IR 05000358/1973005 IR 05000358/1973006 IR 05000358/1973007 IR 05000358/1974001 IR 05000358/1974002 IR 05000358/1974003 IR 05000358/1975004 ML20235B308 ML20235B364 ML20235B401 ML20235B405 ML20235B424 ML20235B456 ML20235B461 ML20235B465 ML20235B477 ML20235B488 ML20235B507 ML20235B552 ML20235B582 ML20235B585 ML20235B588 ML20235B605 ML20235B618 ML20235B623 ML20235B649 ML20235B656 ML20235B662 ML20235B670 ML20235B679 ML20235B683 ML20235B687 ML20235B702 ML20235B708 ML20235B713 ML20235B714 ML20235B718 ML20235B720 ML20235B730 ML20235B734 ML20235B748 ML20235B754 ML20235B762 ML20235B764 ... further results
References
FOIA-87-111 NUDOCS 8709280235
Download: ML20235E704 (1)

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9 Distribution 4 cket Files pg y 4 g PDRs' Local PDRS i

RP Reading DocM m. 50-237, 50-249, Branch Reading' 3

50-265 ACRS (16)

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DJSkovholt, L:OR TJCarter, L:0R' l

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MKarman, OGC

-Conanonwealth Edison Company DLZiemann, L:cRB #2 ATTN.

L*r. L. D. Butterfield, Jr.

RDSilver, L:CRB #2 Nuclear Licensing Mainistrator JIRiesland, L:0RB #2 Post Offica Box 767 RMDiggs, L:0RB'#2 1

1 Cnicago, Illinois 60690 Gentlemen:

Analyses performed for other BWas have shown that a significant change in the shape of the scram reactivity cune could occur with core.

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burnup,_ variations in fuel e.:riciment, and configuration of gadolinium oxide.in the core. This, change can resnlt in a change in the transient

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-l analy'ses 'describod in the FSAR and a change to the Technical Specifi cations on control rod drivo scra:n ti=es and rod reactivity worth limitations for the Dresden 2 and 3 Unita and the Quad-Citics Station.

It is our understanding that you are aware of this situation aud are preparing an analysis with approirriate re,:camoudations.

It is requested that the analysis and any proposed technical specification p

j be submitted within 30 days with three sig:..ed originals and thirty seven additional' copica. If your submittal is in the form of a single document involving all four unito, please submit a total of sixty copios in lieu of forty.

Sincerely,

c.+pa wp.a bx

[p. J. shnh&:

Donald J. Skcvholt Assistant Director for 8709280235 870921 Operating Reactors PDR FOIA PDR Directorate of Liconr:ing MENZ87-111 cc:

Hr. Charles Whitmore Joan W. Ro.ic, Esquiro President and Chairman Isham, Lincoln & Beale Iowa-Illinois Gas and Counselors at Law Electric Compa67 Q)}T omer, L:0RB 2 L: ORB #2 L:vRB_#2 L:QRB_$2 ), L:CR g

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