ML20064J428
| ML20064J428 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 03/16/1994 |
| From: | Mcmeekin T DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-89-13, NUDOCS 9403210212 | |
| Download: ML20064J428 (3) | |
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(hk nnter Company (704)875-1000 hk(laire Nuclear Statwn 12700 Hagen D rry lauad fluntmnlle, NC 28018 bW5
.t wg DUKEPOWER March 16, 1994 U.S.
Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.
20555
Subject:
McGuire Nuclear Station, Units 1 and 2 Docket Nos. 50-369 and 50-370 Supplemental Response #4 to NRC Generic Letter 89-13, Service Water System Problems Affecting Safety-Related Equipment This is the fourth Supplemental Response to NRC Generic Letter 89-13, Service Water System Problems Affecting Safety-related Equipment.
The first supplemental response dated November 19, 1990 provided a schedule for completing modifications required to flush infrequently used cooling loops.
The second supplemental response dated May 13, 1992 provided a revised schedule for these modifications and addressed elements of the Surveillance and Control, Test Program, Inspection and Maintenance Program, Confirmation of Licensing Basis and Procedures and Training actions of the Generic Letter.
The third supplemental response dated July 14, 1993 updated the schedule provided in the second Supplement and addressed elements of the Surveillance and Control, Inspection and Maintenance Program and Confirmation of Licensing Basis actions of the Generic Letter.
This Supplement updates the schedule provided in the third Supplement and addresses elements of the Surveillance and Control action of the Generic Letter.
I MODIFICATIONS TO ALLOW FLUSHING OF ASSURED MAKE-UP PIPING Spent Fuel Pool Cooling system modifications have been cancelled.
The piping layout for both trains on both Units are not conducive to fouling and/or restriction.
These stagnant branch lines rise vertically from a horizontal RN supply header significantly limiting the possibility of silt and debris accumulation.
The branch line check valve will be opened on a periodic basis to allow inspection of the upstream and downstream piping.
For questions, please contact P.
T. Vu at (704) 875-4302.
1 9403210212 94031A
./
PDR ADOCK 05000369 p
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NRC March 16, 1994 Page 2 I declare, under penalty of perjury, that the statements set forth herein are true and correct to the best of my knowledge.
Very truly yours, TKM n T.C.
McMeekin PTV/GL8913SU 4 xc:
Mr.
S.D.
Ebneter Administrator, Region II U.S.
Nuclear Regulatory Commission 101 Marietta St.,
NW, Suite 2900 Atlanta, Ga.
30323 Mr.
V.
Nerses Office of Nuclear Reactor Regulation U.S.
Nuclear Regulatory Commission One White Flint North, Mail Stop 9H3 Washington, D.C.
20555 Mr.
G. Maxwell NRC Resident Inspector McGuire Nuclear Station
....'b i
U.S.
NRC March 14, 1994 Pago 3 bxc:
A.V. Carr (PB05E)
P.R.
Herran T.D. Curtis (MG01SE)
D.G. Gardner (MG01SE)
J.R.
Pring (MG01SE)
E.B.
Blough (MG02ME)
J.J.
Mead (MG01SE)
R.M. Roberts (MG01SE)
J.G. Heffner (MG01SE)
G.D.
Gilbert R.O.
Sharpo G.A.
Copp (EC050)
N.F.
Stambaugh (EC07B)
P.T.
Vu File: 815.07 l
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