ML20005E816

Responds to NRC Bulletin 89-002 Re Stress Corrosion Cracking of high-hardness Type 410 Stainless Steel Internal Preloaded Bolting in Anchor Darling Model S350W Swing Check Valves or Valves of Similar Design

ML20005E816
Person / Time
Site:	Callaway
Issue date:	01/03/1990
From:	Schnell D UNION ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-89-002, IEB-89-2, NUDOCS 9001110111
Download: ML20005E816 (4)

Text

pe m.

• 1901 Grotrot Streci Post Offee Ba 149 i' '

. St. lows. Mrssasti C3t&G t

, ~ 314 554 2650 0

I l'

Donaldf. Schnell p -

January 3, 1990 sero v,x pec3 ment 1

C- Mdem F hbl U.S. Nuclear R9gulatory Commission n Attn Document Control Desk i Mail Station Pl-137 r Washington, DC 20555 ULNRC- 2135 L Gentlemen DOCKET NUMBER 50-483 CALLAWAy PLANT

, STRESS CORROSION CRACKING OF HIGH-HARDNESS TYPE 410 STAINLESS-STEEL INTERNAL PRELOADED BOLTING IN ANCHOR DARLING MODEL S350W SWING  !

CHECK VALVES OR VALVES OF SIMILAR DESIGN

Reference:

NRC Bulletin No. 89-02, dated July 19, 1989 NRC. Bulletin No. 89-02, Action Item I.A.

requested licensees to disassemble and inspect all safety-related Anchor Darling Model S350W swing check valves supplied with internal retaining block studs of ASTM specification A193 grade B6 type 410 stainless steel, and all other safety-related check valves of similar

' design and material selection. A review of our records indicates that Callaway Plant does not-have any Ancho.r Darling Model S350W swing check valves or any check valves of similar design and material selection that would require disassembly and inspection.

5 If there are any questions concerning this matter, please contact me.

Very truly ou ,

4hb Donald F. Schnell DFS/JMC/bjp i

I, l C ffg.DP sass I

I \

l

O, .

STATE OF MISSOURI )  !

) SS CITY OF ST. LOUIS ) ,

i Donald F. Schnell, of lawful age, being'first duly sworn t

i upon oath says that he is Senior Vice President-Nuclear and an i- officer of Union Electric Company; that he has read the foregoing f document and knows the content thereof; that he has executed the ,

L same for and on behalf of said company with. full power and- '

authority to do so; and that the facts therein stated are true and-correct to the best of his knowledge, information and belief. ,

By -

t- Donald F. Sdhnell i~

Senior Vice President Nuclear ,

i.

SUBSCRIBED and sworn to before mc this 32 day of *f*#4* 1990.

fl ' - IM DARBARA PIAFF W '

NOTARY PUBUC, STAi[ OF MISSOURI WY COMMIS$10N EXPLRES APRll 22. 1993 '

ST. LOUIS COUNTY. , ,,,

l.

s-i w

\.

t g; i  ;

cc Gerald Charnoff, Esq.

Shaw, Pittman, Potts & Trowbridge 2300 N. Street, N.W.

Washington, D.C. 20037 Dr. J. O. Cermak ,

CFA, Inc. i 4 Professional Drive (Suite 110)

Gaithersburg, MD 20879 j l

R. C. Knop Chief, Reactor Project Branch 1 U.S. Nuclear Regulatory Commission

' Region III  !

799 Roosevelt Road Glen Ellyn, Illinois 60137 Bruce Little  :

Callaway Resident Office U.S. Nuclear Regulatory Commission RRM1 Steedmam, Missouri 65077 Tom Alexion (2) i Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission ,

1 White Flint, North, Mail Stop 13E21 l 11555 Rockville Pike Rockville,14D 20852 Manager, Electric Department Missouri Public Service Commission  ;

P.O. Box 360 Jefferson City, MO 65102

b'

. ' I bec D. Shafer/A160.761

/QA Record (CA-758)

Nuclear Date E210.01 DFS/ Chrono D. F. Schnell J. E. Birk i J. V. Laux M. A. Stiller d G. L. Randolph i R. J. Irwin i H. Wuertenbaecher l W. R. Campbell l A. C. Passwater l R. P. Wendling l D. E. Shafer <

D. J. Walker O. Maynard (WCNOC) '

N. P. Goel (Bechtel) i T. P. Sharkey 1 NSRB (Sandra Auston) l l

- . .. . _ . . _ _ - _ _ _ _____.