ML20029D135
| ML20029D135 | |
| 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-2992, NUDOCS 9405040074 | |
| Download: ML20029D135 (3) | |
Text
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l90IChGuten Avenue Pat Offa Box in St Ir.u t Macur 63166 314 S54 2GF0 UNION April 25, 1994 Donald F. Schnell Etucruic sew %ce twsident
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U.S. Nuclear Regulatory Commission ATTN.:
Document Control Desk Mail Station P1-137 Washington, D.C.
20555 ULNRC-2992 l
Gentlemen:
l i
DOCKET NUMBER 50-483 CALLAWAY PLANT ASME 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."
i Approval is hereby requested for use of the provisions of Code Case N-416-1 for ASME Class 1 and Class 2 systems.
Approval for use on ASME Class 3 systems is specifically excluded from this request, and will be submitted for consideration on a separate letter (ULNRC-2993).
The reason for separate submittal of ASME Class 3 systems is to facilitate timely approval for use of N-416-1 in ASME Class 1 and 2 systems.
Approval is requested by September, 1994, to permit utilization during Callaway's next refueling outage (currently scheduled for Spring, 1995).
The need for timely approval is a result of Callaway's implementation of Code Case N-416-0.
N-416-0 permits deferral of hydrostatic testing for specific ASME Class 2 repairs and replacements until the end of the 10-year ISI interval.
Additionally, the NRC has approved Code Case N-498, which permits elimination of 10-year ISI hydrostatic testing for ASME Class 1 and 2 systems.
Callaway has adopted Code Case N-498 which, with the exception of the tests deferred under N-416-0, eliminates the need for 10-year ISI hydroctatic tests.
Approval of Code Case Ok(
030014 9405040074 940425 PDR - ADOCK 05000483 g9-p PDs
_'U.S.: Nuclear Regulatory Commiss' ion-
,/
ULNRC-2992 Page 2 April 25, 1994 N-416-1 is needed in' order to eliminate the requirement for hydrostatic testing of the components deferred in accordance with Code: Case N-416-0.
Cost savings resulting from elimination of these deferred hydrostatic tests are conservatively estimated at approximately $19,000.00.
Cost savings resulting from elimination of all Class 1, 2,
and 3 repair / replacement hydrostatic tests are estimated at approximately $225,000.00.
Significant reductions in radiation exposure will'also result.
Very truly yours, i
Donald F. Schnell CDN/kea
-Q e-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