ML20029D146

Requests Approval for Use of Provisions of ASME Code Case N-416-1 for ASME Class 3 Sys

ML20029D146
Person / Time
Site:	Callaway
Issue date:	04/25/1994
From:	Schnell D UNION ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ULNRC-2993, NUDOCS 9405040087
Download: ML20029D146 (2)

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. I901 Ct:cuteaa Avenue Pc:t C!bce &n 141 St Lo;r Mw.oun C3lER 31J M4 2bb')

e Union April 25, 1994 f0"8/dI sna Sch"*ll vaavemient Etscruic w.

M U.S. Nuclear Regulatory Commission ATTN.: Document Control Desk Mail Station P1-137 Washington, D.C. 20555 ULNRC-2993 Gentlemen:

DOCKET NUMBER 50-483 CALLAWAY PLANT ASE CODE CASE N-416-1 The American Society of Mechanical Engineers has submitted Code Case N-416-1 to the Nuclear Regulatory Commission for review and approval. Code Case N-416-1 is entitled " Alternative Pressure Test Requirement for Welded Repairs or Installation of Replacement Items by Welding." Approval is hereby requested for use of the provisions of Code Case N-416-1 for ASME Class.3 systems.

Approval for use on ASME Class 1 and Class 2 systems is excluded from this request, and is addressed on a separate letter (ULNRC 2992).

Approval is requested by October, 1994, to permit utilization during Callaway's next refueling outage (Spring 1995). The need for timely approval is a result of'the upcoming implemontation of numerous ASME Section XI repair and replacem e activities at the Callaway Plant and the extensive <mt and scheduling impacts associated with hydrostatic osting. Cost savings resulting from elimination of all Class 1, 2, and 3 repair / replacement hydrostatic tests a2o estimated at approximately $225,000.00. Union Electric considers the alternative testing requirements proposed in the Code Case to constitute a reasonable, safe alternative to the existing hydrostatic testing requirements, and requests timely approval.

Ver truly yours,

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Donald F. Schnell CDN/kea o k(i 9405040007 940425 3 D

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cc: T. A.- Baxter, Esq.

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

Washington, D.C. 20037 M. H. Fletcher CFA, Inc.

18225-A Flower Hill Way Gaithersburg, MD 20879-5334 L. Robert Greger Chief,. Reactor Project Branch 1 U.S. Nuclear Regulatory Commission Region III 801 Warrenville Road Lisle, IL 60532-4351 Bruce Bartlett Callaway Resident Office U.S. Regulatory Commission RR#1 Steedman, MO 65077 L. R. Wharton -(2)

Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 1 White Flint, North, Mail Stop 13E21 11555 Rockville Pike Rockville, MD 20852 Manager, Electric Department Missouri Public Service Commission '

P.O. Box 360 Jefferson City, MO 65102 I

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