ML20154B859
| ML20154B859 | |
| Person / Time | |
|---|---|
| Site: | Mcguire, Catawba, McGuire  |
| Issue date: | 09/30/1998 |
| From: | Tuckman M DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9810060035 | |
| Download: ML20154B859 (2) | |
Text
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g Duk) Energy Corporttiin 526 South Church Street EO. Box 1006 (EC07H)
Charlotte NC 28201-1006 M. S. Tuckman (704) 382-2200 ornct Exivutive Vice 1%ident (70D 382-4360 FAX Nuclear Generation September 30, 1998 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 McGuire Nuclear Station, Units 1 and 2 Docket Numbers 50-369 and 50-370 Request for NRC Position Regarding Instrument Calibration Setting Tolerances for Trip Setpoints in the Technical Specifications (TS) for the Catawba and McGuire Nuclear Stations
Reference:
Letter from M.S.
Tuckman to NRC, same subject, dated August 20, 1998 The reference letter requested NRC review of a Duke Energy licensing position on the subject TS requirement and a docketed NRC position concerning this subject.
On September 29, 1998, a conference call was held among various representatives of Duke Energy and the NRC to discuss the reference letter.
As a result, Duke Energy would like to supplement the reference letter to include the following information:
Existing setpoint calculations for tne Catawba and McGuire Reactor Protection Systems and Engineered Safety Features Actuation Systems are consistent with either the Westinghouse or the Duke setpoint methodologies (as applicable) as previously docketed to NRC.
Both of these methodologies take into account two-sided calibration tolerances when determining the Allowable Value and the nominal Trip Setpoint.
If the setpoint is left at the worst calibration tolerance allowed by the calibration procedure, the setpoint calculations support that the respective trip will occur as assumed in the safety analysis.
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.n 9810060035 980930
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'PDR ADOCK 05000369 P
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U.S. Nuclear Regulatory Commission-Page 2
' September 30, 1998
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If you have any qnestions concerning this information, please call L.J.
Rudy at (803) 831-3084.
Very'truly yours, 4 s. q A M.S. Tuckman LJR/s xc:
L.A. Reyes U.S. Nuclear Regulatory Commission Regional Administrator,-Region II Atlanta Federal Center 61 Forsyth St.,
SW, Suite 23T85 Atlanta, GA 30303 D.J.
Roberts-Senior Resident Inspector (CNS)
U.S. Nuclear. Regulatory Commission Catawba Nuclear Station-S.
Shaeffer Senior Resident Inspector (MNS)
U.S. Nuclear Regulatory Commission McGuire Nuclear Station P.S.
Tam NRC Senior Project Manager (CNS)
U.S. Nuclear Regulatory Commission Mail Stop O-14H25 Washington,~D.C. 20555-0001 F. Rinaldi~
NRC Senior Project Manager (MNS)
U.S. Nuclear Regulatory Commission Mail Stop 9H3
. Washington, D.C. 20555-0001
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