ML20235D056

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Discusses ACRS 80th Meeting on 661208-10 Re Review of Util Proposal to Const Two BWRs at Plant Site Near Cordova,Il. ACRS Believes That Matters Mentioned Can Be Resolved During Const & Plant Can Operate Safely
ML20235D056
Person / Time
Site: Quad Cities, 05000000
Issue date: 12/14/1966
From: Okrent D
Advisory Committee on Reactor Safeguards
To: Seaborg G
US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20235B311 List: ... further results
References
FOIA-87-111 NUDOCS 8709250099
Download: ML20235D056 (4)
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. . . . - lAU LIDS /75 ADVISORY COMMITTEE ON REACTOR SAFEGUARDS UNITED STATES ATOMIC ENERGY COMMISSION l WASHINGTON. D.C. 20545 l l

DEC 141966 i

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Honorable Clona T. Seaborg j Chairman U. S. Atomic Enorgy Commission Washington, D. C.

Subjects REPORT ON QUAD-CITIES STATION, UNITS 1 AND 2

Dear Dr. Scaborg:

At its eightieth meeting, on December 8-10, 1966, the Advisory Committee on Reactor Safeguards reviewed the proposal of the Commonwealth Edison Company to construct two boiling water reactors at its Quad-Cities site near Cordova, Illinois. Each unit would be operated at a power level of 22551G(t) and be substantially similar in design to the previously re-viewed Drooden Unita 2 and 3. The Committee had the benefit of discus-

'sion with representatives of the applicant, the Concral Electric Company, Sargent & Lundy, and the AEC Regulatory Staff, and of the documents listed.

An ACRS Subcoccittee mot to review this project at Chicago, Illinois on e pmMr ?.6,1M6 e:A on t' ven.5er 17,1966. The Subceemittee visited the sin durics the hptcher lo caan.;.

The cocplex of emergency core cooling systems for Quad-Cities is similar to that proposed for Dresden 3. Each reactor includes:

1. A High Pressure Coolant Injection (HPCI) System.

L A high-volume, low-pressure coolant injection (LPCI) system.

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3. Two core spray systems.
4. A system that will make river water available i to the foedwater pumps for emergency cooling.  !

Considerably more information is now available on these systems and they )

appear to bo adequate for tho Quad-Citics Roactors. When additional de- i:

sign details becomo availablo, it is recommended that the Regulatory Staff satisfy itccif with respect to the analyses of system characteristics, in-cluding the analysis related to coro flooding, and the effects of blowdown on the reactor internals.

8709250099 870921 PDR FOIA MENZB7-111 PDR-

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. - *9 nonorc31c Glenn T. Scaborg -2 DECI'ii36 As in the case of Dresden 3, the Committeo notes that the applicant has made improvements in the requirements for pressure vessel inspec-tion during fabrication.*

The applicant has outlined a general program for periodic inspection of the pressure vessols and other components in the primary systems during the lifetime of the reactors. The Quad-Cities plants have boon designed to permit improved accessibility for purposes of inspoetion of the regions of high stress, such as no::les and flanges. The Committee may wish to review further the frequency and extent of inspection cf the pressure vessels at the time of the request for the operating licenso.

Steam line isolation valves are an important safeguard in the event of failure of the secam lino external to the contain:ent. The Committoo recommends that the applicant develop means of testing thcao valvon under simulated accident conditions. Those tests should be discussed with the Regulatory Staff.

The Advisory Committee on Reactor Safeguards believes that the various matters mentioned can be resolved during construction and that the pro-i posed reactors can be constructed at the Quad-Cities site with reason-ablo assuranco that they can be operated without unduo risk to the health and safety of the public.

Sincerely yours, OR1CI!dL SIOW2D BY DAVID OK22NT David Okront Chairman Roferencos Attached.

l 9 ,e 0 ..ai .. e believes that th 2 L.due:r; chould continue to pursuo l en orderly program leading to further improvemaat" in the quality '

of prosauro vostols and other components of the primary oystem auch c.- tva a , pumps, and piping.

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Honorcble Gican T. Soabors DEC 141965 Roforencoo - Oued-Citios

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1. Quad-cicios Station, Unit 1, Plant Docign Ar.alysia, Volumos I and II, undated, roccived June 6,1966.
2. Cormonucalth Edicon company lotter dated August 16,1966 to AEC -

Division of Reactor Liconsing, with attachments: Amendment No. 1.

3. Commonwealth Edicon Company lottor datad' September 9,1966' to AEC Divicion of Reactor. Licensing','with attachments: Amendment No. 2.
4. Co=conwealth Edicon Company lottor dated Octobc 18, 1966 to AEC Divioion of Roactor Licensing, with attachments: Acondmont No. 3.
5. - Concral Eloctric company lettor dated November 1,1966 to Mr. Brian Crimos, AEC, with onclosure.
6. Co=conucalth Edison Company lof, tor dated Novc=bor 25, 1966 to Dr.

Potor t.. Morris, AEC Division of Reactor Liconting, with attachments Amendment No. 4.

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