ML20097C958
| ML20097C958 | |
| Person / Time | |
|---|---|
| Site: | Mcguire, Catawba, McGuire  |
| Issue date: | 02/07/1996 |
| From: | Tuckman M DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9602120090 | |
| Download: ML20097C958 (2) | |
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DukeherCompany M.S Dxmv P.0 Box 1006 Senior VicePresident Diarlotte,NC2820M006 Nudear Generation (704)382-2200 Onice (704)3824360 Fat DUKEPOWER February 7, 1996 U.
S.
Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, DC 20555
SUBJECT:
Duke Power Company Request for Relief from ASME Boiler and Pressure Vessel Code,Section III Requirements Duke Power Request for Relief 95-GO-002 Supplemental Information Catawba Nuclear Station Docket Nos. 50-413, 414 McGuire Nuclear Station Docket Nos. 50-369, 370 In a letter dated January 18, 1996 the NRC Staff requested additional information be provided on the scope of Duke Power Request for Relief from ASME Section III Requirements (RR) No. 95-GO-002.
The NRC Staff requested Duke to discuss the extent of manual block valves at Catawba and McGuire located in series with overpressure protection devices and subject to Article NC/ND-7153 of the Code and the provisions of 10 CFR 50.55a.
As originally submitted, RR 95-GO-002 only addressed manual block valves associated with the Volume Control Tank and the Regenerative Meat Exchangers that were specifically identified in Westinghouse Nuclear Safety Advisory Letter NSAL-94-009.
Preliminary evaluations at Catawba and McGuire have concluded there are other manual block valve applications subject to the more recent Code interpretation of Article NC/ND-7153 as described in RR 95-GO-002.
Duke believes the considerations affecting these additional valves, as with the valves originally identified in Westinghouse letter NSAL-94-009, concern only Code compliance issues and do not involve safety issues.
Based on these preliminary evaluations, Duke plans to supplement Request for Relief 95-GO-002 to include all known valve applications that are 9602120090 960207 PDR ADOCK 05000369
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determined to be subject to Article NC/ND-7153 and the provisions of 10 CFR 50.55a.
Due to the limited engineering resources currently available, some time will be required to complete the identification of the additional block valves, j
and evaluate the failure consequences to support an expanded scope of RR 95-GO-002.
Therefore, Duke plans to submit the 4
supplemental information to the NRC by September 30, 1996.
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Presently, administrative controls are in place to preclude improper closing of the manual block. valves described above.
i Questions on this relief request may be directed to J. S.
Warren at (704) 382-4986.
Very truly.yours, M.
S.
Tuckman MST/JSW
'l xc:
S.
D. Ebneter Regional Administrator, Region II i
R. E. Martin Project Manager (Catawba)
ONRR 1
V. Nerses Project Manager (McGuire)
I ONRR-R.
J.
Freudenberger Senior Resident Inspector (Catawba)
G.
F. Maxwell Senior Resident Inspector (McGuire) l
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