ML20005E816

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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 Ameren icon.png
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)


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l' Donaldf. Schnell January 3, 1990 sero v,x pec3 ment p

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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

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O, STATE OF MISSOURI )

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SS CITY OF ST. LOUIS )

i Donald F. Schnell, of lawful age, being'first duly sworn i

upon oath says that he is Senior Vice President-Nuclear and an t

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 Donald F. Sdhnell i

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Senior Vice President Nuclear i.

SUBSCRIBED and sworn to before mc this 32 day of

  • f*#4*

1990.

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IM DARBARA PIAFF W

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

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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

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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

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L. Randolph i

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Irwin i

H. Wuertenbaecher W.

R. Campbell l

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C. Passwater R. P. Wendling D.

E.

Shafer D.

J. Walker O. Maynard (WCNOC)

N. P. Goel (Bechtel)

T. P.

Sharkey 1

NSRB (Sandra Auston)

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