ML20141K922

Forwards Util 710520 Ltr Clarifying Misunderstanding Concerning Reliability of Plant Onsite Emergency Diesel Generators

ML20141K922
Person / Time
Site:	Oyster Creek
Issue date:	05/26/1971
From:	Morris P US ATOMIC ENERGY COMMISSION (AEC)
To:	Bush S Advisory Committee on Reactor Safeguards
Shared Package
ML20091A092	List: IA-91-282, Forwards Written Statement Submitted by Sp Russo for ECCS Subcommittee Meeting on 770129,for Info.W/O Encl ML20141K026 ML20141K047 ML20141K056 ML20141K063 ML20141K066 ML20141K070 ML20141K076 ML20141K082 ML20141K091 ML20141K095 ML20141K121 ML20141K137 ML20141K141 ML20141K153 ML20141K163 ML20141K175 ML20141K185 ML20141K190 ML20141K359 ML20141K365 ML20141K368 ML20141K372 ML20141K375 ML20141K379 ML20141K382 ML20141K386 ML20141K390 ML20141K395 ML20141K398 ML20141K402 ML20141K406 ML20141K408 ML20141K415 ML20141K418 ML20141K423 ML20141K426 ML20141K432 ML20141K436 ML20141K441 ML20141K618 ML20141K620 ML20141K625 ML20141K626 ML20141K630 ML20141K633 ML20141K635 ML20141K637 ML20141K641 ML20141K643 ... further results
References
FOIA-91-282 NUDOCS 9203260113
Download: ML20141K922 (3)

Text

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• ' UNITED STATES ATOMIC ENERGY. COMMISSION ,

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wAsmuoTon, o c rosas g De x p RECEIVED i r May 26, 1971 e " t'el 27 /M 9 3B l Docket No. 50-219 l

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i Dr. Spencer'H Bush Chairman, Advisory Committee 4- on Reactor Safeguards- l U. S.- Atomic Energy Commission

! Washington, D. C.- 20545 l-

Dear Dr. Bush. ,

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Three (3) copies of the following are transmitted ,

for information the Committee: i l

j l- Letter from Jersey Central Power 6 Light Company dated May 20, 1971, clarifying a misunderstanding concerning the reliability of.the Oyster Creek i on-site emergency diesel generators. l I

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g Sincerely, ,

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.L Peter A. Morris, Director Division of Reactor-Licensing.

Enclosures:

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Project: Oyster Creek Status: Provisional Operating License issued Operation at increased power level requested Backtroend: December 12, 1968 - ACRS operating license report April 9, 1969 - POL issued -

May 3, 1969 - Initial criticality December 22, 1969 - Completed 100 hr full power (1600 Mwt) demonstration May 5, 1970 - Amendment No. 55 requesting authorization to operate at 1690 th.>t June 2,1970 - Amend.rient No. 57 correcting and I supplementing Amendment No. 55 July 30, 1970 - Amendrant 1:o . 58, startup test results September 17, 1970 - Am.2ndment 1;o. 63, additional j

information in support of Amendment No. 55 i September 30, 1970 - DRL report on the proposed power increase to 1690 thit October 14, 1970 - Subcommittee meeting October 15, 1970 - ACRS meeting November 10, 1970 - Supplemeatal DRL report l November 11, 1970 - Subcommittee meeting j November 12-14, 1970 - ACRS meeting j

i November 17, 1970 - ACRS Report favorable to " mini

, stretch" to 1690 Met -

December 10, 1970 - Reactor operates at 1690 Mwt l December 30, 1970 - Amendment No. 65 requesting i

authorization to operate at 1930 th7t

' January 26, 1471 - Supplement No. I to Amendment No. 65 11ay 21,1971 - DRL report on the proposed power increase to 1930 Mwt May 2 6,1971 - Subcowaittee meeting June 10, 1971 - Supplc.nent No. I to DRL report June 10-12, 1971 - ACRS meeting '

Jersey Central Power and Light Company has requested a power Icvel increase for the Oyster Creek Nuclear Generating Station to 1930 Mwt which in the maximum capacity of the main turbine and about 70 Mw above the origint.1 " stretch" capacity.

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2 DRL has completed its review of the proposed power increase and is now cat is fied that operation at 1930 Mwt will not produce an undue risk to the health and safety of the public. DRL believes that l the I'CCS is adequate to cope with an LOCA at power levels up to 1930 M't.

Operation at 1930 thit 1spredicated on the availability of five relief valves. The fif th relief valve will not be available antil the Fall of 1971. Until such time as the fifth relief valve is installed the licensee proposes to limit power to 1865 Mwt.

l The Coraittee advised the licensee that i t would at terrpt to write a letter favorable to the power increase. Draft No. 1 of a letter is l I available for consideration at the June 16-17, 1971 Special ACRS mee t i n;; .

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