ML051050448
| ML051050448 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 04/07/2005 |
| From: | Jamil D Duke Energy Corp, Duke Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| TAC MC2547, TAC MC2548 | |
| Download: ML051050448 (4) | |
Text
Duke LPowere A Duke Energy Company D.M. JAMIL Vice President Duke Power Catawba Nuclear Station 4800 Concord Rd. / CNO1VP York, SC 29745-9635 803 831 4251 803 831 3221 fax April 7, 2005 U.S. Nuclear Regulatory Commission Attention:
Document Control Desk Washington, D.C. 20555
Subject:
Duke Energy Corporation Catawba Nuclear Station, Units 1 and 2 Docket Numbers 50-413 and 50-414 Proposed Technical Specifications Amendments 3.3.2, Engineered Safety Feature Actuation System Instrumentation 3.3.6, Containment Air Release and Addition Isolation Instrumentation Reply to Request for Additional Information TAC Numbers MC2547 and MC2548
References:
- 1.
Letter from Duke Energy Corporation to NRC, same subject, dated March 22, 2004
- 2.
Telephone Conversation between Duke Energy Corporation and NRC, April 6, 2005 Pursuant to 10 CFR 50.4 and 10 CFR 50.90, this letter revises a portion of the technical justification contained in the Reference 1 letter.
In Reference 1, Duke Energy Corporation provided a confirmatory statement concerning the applicability of relay types used at Catawba and whether they were bounded by the underlying evaluation documented in WCAP-13878-P-A Revision 2.
In the Reference 2 telephone conversation, the NRC requested Duke Energy Corporation to revise this confirmatory statement to include an additional relay type evaluated under the WCAP which Catawba does not use.
This request was made so as to ensure that any possible future relay replacements using this relay type would remain bounded by the WCAP evaluation.
CD www. duke-energy. corn
Document Control Desk Page 2 April 7, 2005 Accordingly, Reference 1, Attachment 3 Page 7, contains the following confirmatory statement:
(a) Confirm the applicability of the WCAP-13878-P-A Revision 2 analyses to Catawba.
Response
Catawba Units 1 and 2 use P&B Model 4121-1 relays in ESFAS applications or as interposing relays.
These relays are bounded by WCAP-13878-P-A Revision 2 and have environmental conditions similar to those in the WCAP.
This confirmatory statement is being revised via this letter to read as follows:
(a) Confirm the applicability of the WCAP-13878-P-A Revision 2 analyses to Catawba.
Response
Catawba Units 1 and 2 use P&B Model 4121-1 relays in ESFAS applications or as interposing relays.
These relays are bounded by WCAP-13878-P-A Revision 2 and have environmental conditions similar to those in the WCAP.
Although Catawba does not presently use P&B Model 4103-1 relays and has no plans to do so, these relays are nevertheless also bounded by WCAP-13878-P-A Revision 2.
There are no regulatory commitments contained in this letter.
Pursuant to 10 CFR 50.91, a copy of this letter is being sent to the appropriate state official.
Inquiries on this matter should be directed to L.J. Rudy at (803) 831-3084.
Very truly yours, D.M. Jamil LJR/s
Document Control Desk Page 3 April 7, 2005 D.M. Jamil affirms that he is the person who subscribed his name to the foregoing statement, and that all the matters and facts set forth herein are true and correct to the best of his knowledge.
Subscribed and sworn to me:
gate My commission expires:
//
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Date SEAL
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Document Control Desk Page 4 April 7, 2005 xc:
W.D. Travers U.S. Nuclear Regulatory Commission Regional Administrator, Region II Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, GA 30303 E.F. Guthrie Senior Resident Inspector (CNS)
U.S. Nuclear Regulatory Commission Catawba Nuclear Station S.E. Peters (addressee only)
NRC Project Manager (CNS)
U.S. Nuclear Regulatory Commission Mail Stop 0-8 G9 Washington, D.C. 20555-0001 H.J. Porter, Director Division of Radioactive Waste Management Bureau of Land and Waste Management Department of Health and Environmental Control 2600 Bull St.
Columbia, SC 29201