ML17083A265

Discusses Interim Solution for Rod Drop Problem Agreed Upon at 791119 Meeting W/Westinghouse in Bethesda,Md.Plant May Operate in Automatic Control from 0-100% Power W/No Charges in Current Rod Insertion Limits

ML17083A265
Person / Time
Site:	Diablo Canyon
Issue date:	02/13/1980
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Morrissey J PACIFIC GAS & ELECTRIC CO.
References
NUDOCS 8002280669
Download: ML17083A265 (6)

Text

Distr'ion:

D et File RR Reading LWR tl File FEB 13 i980 D.

F. 'Ross D. B. Vassallo S.

A. Varga F. J. Williams J.

F. Stolz B.

C. Buckley E.

G. Hylton R. J. Mattson ST H.=Hanauer J,

p. Knight R. L. Tedesco R.

C.

DeYoung Docket Nos:

50-275 and 50-323 Mr. John C. Mdnrissey Vice President 8 General Counsel Pacific Gas tI Electric Company 77 Beale Street San Francisco, California 94106 V, A. floore WI Kreger M, L. Etnst R, p. Denise R. Hartfield ELD IE (3) bcc:

NRC PDR Local PDR NSIC TIC TERA ACRS (16)

SUBJECT:

ROD DROP PROTECTION FOR DIABLO CANYON UNITS 1

& 2 Westinghouse Electric Corporation notified the-NRC on November 15, 1979 of the potential for predicting more limiting results 'for single dropped rod events in its power plants with negative rate trips." This matter was dis-cussed further with Westinghouse and the NRC Staff at a meeting in Bethesda, Maryland on November 19, 1979.

The interim solution agreed upon at the meeting is:

(a)

The plant may operate in manual control from 0 to 1005 power with no changes in the current rod insertion limits.

(b)

The plqjf, may operate in automatic control from 0 to 905 power with no changes in the current rod insertion 'limits; above 90$ power the D control rod bank would have to be withdrawn to 215 steps or greater.

This has been implemented for operating reactor's by an agreement to follow the interim procedures by each licensee on his docket.

It seems that the most expedient way to clear this matter up for Diablo Canyon Units 1

8 2 would be to provide such an agreement.

Please indicate your position on this matter by fiarch 10, 1980.

Sincerely, Original signod, by "John P. Stolz John F.,Stolz, Chief Light Water Reactors Branch No.

1 Division of Project Management CC'ee next page 8008280@</

OFFICE P SURNAME

,. DPN:

1 BCBuc/ley:pcm 02/ Jp

/80 DPM:

. Pl,...

JFSto 02/ P

/80 NRC FORM 318 (9-76) NRCM 0240

'AU.S. GOVERNMENT PRINTING OFFICE: 1979.289 369

'h C

E 4

k

~

I'

~

I 4

h h

F "J

~,

I I

I

'4 j

Ih I

Vh VVI 4

SI I

v E,

V,l ~ ~

1

~4c Mr. John C. Morrissey FEB i, 3 la80 CC:

Phil i p A. Crane, Jr.,

Esq.

Pacific Gas

& Electric Company 77 Beale Street San Francisco, California 94106 Janice E. Kerr, Esq.

California Public Utilities Commission 350 McAllister Street San Francisco, California 94102 Mr. Frederick Eissler, President Scenic Shoreline Preservation Conference, Inc.

4623 More Mesa Drive Santa Barbara, California 93105 Ms. Elizabeth E. Apfelberg 1415 Cazadero

~ San Luis Obispo, California 93401 Ms. Sandna A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Mr. Gordon A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Paul C. Valentine, Esq.

321 Lytton Avenue Palo Alto, California 94302 Yale I. Jones, Esq.

19th Floor 100 Van Ness Avenue San Francisco, California 94102 I

Mr. Richard Hubbard MHB Technical Associates Suite K "

1723 Hamilton Avenue San Jose, California 95125 Mr. John Marrs Managing, Editor San Luis Obispo County Telegram - Tribune 1321 Johnson Avenue P. 0.

Box 112 San Luis Obispo, California 93406 Elizabeth S.

Bowers, Esq.,

Chairman Atomic Safety

& Licensing Board U. S. Nuclear Regulatory Commission Washington, D.

C.

20555 Mr. Glenn 0. Bright=

Atomic Safety

& Licensing Board U.

S. Nuclear Regulatory Commission Washington, D.

C.

20555 Tolbert Young P. 0.

Box 219 Avila Beach, California 93424 Richard S.

Salzman, Esq.,

Chairman Atomic Safety

& Licensing Appeal Board U.

S. Nuclear Regulatory Commission Washington, D.

C.

20555 Dr.

W.

Reed Johnson Atomic Safety

& Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D.

C.

20555 Alan S. Rosenthal, Esq.

Atomic Safety

& Licensing Appeal Borad U.

S. Nuclear Regulatory Commission Washington, D.

C.

20555 Ms.

Raye Fleming 1920 Mattie Road Shell Beach, California 93440.

Brent Rushforth, Esq.

Center for Law in the Public Interest 10203 Santa Monica Boulevard Los Angeles, California 90067 Arthur B. Gehr, Esq.

Snell

& Wilmer 3100 Valley Center Phoenix, Arizona 85073 Mr. James

0. Schuyler, Nuclear Projects Engineer Pacific Gas

& Electric Company 77 Beale Street San Francisco, California 94106

~ '

'<<y.

~ ~

p>~

)'

Mr. John C. Morrissey cc:

Bruce Norton, Esq.

3216 North 3rd Street Suite 202 Phoenix, Arizona 85012 Mr.

W.

C. Gangloff Wes tin ghouse Electri c Corpora tion P. 0.

Box 355 Pittsburgh, Pennsylvania 15230 Michael R. Klein, Esq.

Wilmer, Cutler 5.Pickering 1666 K Street, N.

W.

Washington, D.

C.

20006 David F. Fleischaker, Esq.

Suite 709 l735 Eye'Street, N.

W.

Washington, D.

C.

20006 Dr. William E. Martin Senior Ecologist Battelle Memorial Institute

Columbus, Ohio 43201 W. Andrew Bal dwin, Esq.

124 Spear Street San Francisco, California 94105 Resident Inspector/Diablo Canyon NPS c(o U, S, NRC P. 0, Box 219 Avila Beach, Caltfornta 93424