ML20247L865

Concurs W/Util 881130 Response to Generic Ltr 88-11, Indicating That Draft Rev 2 to Reg Guide 1.99 Currently Used to Predict Effect of Neutron Radiation on Reactor Vessel Matls

ML20247L865
Person / Time
Site:	Callaway
Issue date:	05/24/1989
From:	Alexion T Office of Nuclear Reactor Regulation
To:	Schnell D UNION ELECTRIC CO.
References
RTR-REGGD-01.099, RTR-REGGD-1.099 GL-88-11, TAC-71474, NUDOCS 8906020282
Download: ML20247L865 (2)

Text

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May24,1959'.

J-Docket No.j. 50-483:

U L LMr. Donald F. Schns11I *, '

D:NRC'& Local PDRs TAlexion.

OGC Senior ~VicetPresident.- Nuclear GHolahan EJordan ,.

Union Electric Company MVirgilio BGrimes.

P. O.' Box.149- ," PKreutzer '

ACRS(10)

-St. Louis =-Missouri ~63166

, PDIII-3 r/f-Gray File

.CCheng ADeAgazio Dea'r Mr. Schnell: ,

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SUBJECT:

RESPONSE'T0 GENERIC LETTER.88-11 (TAC 71474);

l Generic' LetterI(GL)[88 k'1 requested licensees to use the method described in Revision 2 to. Regulatory Guide (RG)?1.99 ~to. predict the effect of neutron

-radiation on reactor vessel materials. "In. addition,La: technical analysis was required to be performed and a schedule"of proposed actions'was to be submitted-within 180 days of-the effective?date ofLRG 1.99.. Revision 2.

Your response to GL.88-11,dat'ed November ~ 30.-1988, states-that you currently .

Lutilize the Draft Revision 2 to RG 1.99 methodo1_ogy to. predict the effect of neutron radiation on reactor vessel materials. -This methodology-was used

, to revise the- Callaway Plant reactor- coolant system heatup and cooldown rates,- '

the cold. overpressure mitigation system setpoints and' associated technical

, ,  : specifications and was approved.in Amendment 36 to the Callaway operating.

license.. Your~ response also states that the Draft Revision 2 methodology-

-utilizes a more conservative fluence factor than the Revision 2 methodology, a reanalysis of the Amendment 36 issues discussed above is not necessary at this

time, and future analyses submitted per 10 CFR Part 50.. Appendix G,1will .

utilize'RG"1.99,. Revision 2.

.The staff has reviewed and agrees with your response to GL 88-11 andLconsiders

.GL 88-11'to be closed for.Callaway.

~

Sincerely,

! /s/

/

l. .

Thomas W. Alexion, Project Manager Project Directorate III-3 Division of Reactor Projects - III,

! , IV, V and Special Projects Office of Nuclear Reactor Regulation cc::<See next page-

' Office: . LA/PD Surname: PKr I-3 r

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Mr..D. F. Schnell-Callaway. Plant

@H. L Union Electric Company Unit No. 1

.c'c : -

Dr. 'J. 0. - Cermack . Mr. Bart D. Withers

-CFA Inc. President and Chief 4 Professional Dr., Suite 110 Executive Officer Gaithersburg, MD 20879. Wolf Creek Nuclear Operating Corporation Gerald Charnoff,;Esq. P. O. Box 411 Thomas A. Baxter, Esq. Burlington, Kansas '66839 Shaw,-Pittman,~Potts & Trowbridge 2300'N Street, N. W. Mr. Dan I.'Bolef, President

~ Washington, D. C. 20037 Kay Drey, Representative.

Board of. Directors Coalition Mr. T. P. Sharkey. for the Environment Supervising Engineer, St. Louis Region

. Site Licensing 6267 Delmar Boulevard

. Union Electric Company. University City, Missouri. 63130 Post Office Box 620

.Fulton, Missouri 65251 U. S. Nuclear Reculatory Consnission Resident Inspectors Office RRi1 Steedman, Missouri 65077 Mr. Alan C. Passwater, Manager Licensing and Fuels Union Eltctric Company Post Office Box 149 St. Louis, Missouri _ 63166

' Manager - Electric Department Missouri Public Service Commission 301 W. High ,

Post Office Box 360 '

Jefferson City, Missouri 65102 Regional Administrator U. S. NRC, Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137

-Mr. Ronald A. Kucera, Deputy Director

~ Department of Natural Resources P. O. Box 176 Jefferson City, Missouri 65102 I;

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