ML20113B573
| ML20113B573 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 03/01/1985 |
| From: | Tucker H DUKE POWER CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8504110269 | |
| Download: ML20113B573 (1) | |
Text
Dunn Powim Go>mm P.O. nox 33180 CHARLOTTE, N.O. 28242 HALILTUCKEH retzenoxe (704) 3MF4531 vsom ruessomwr 85*e A, e96s 3 I Dr. J. Nelson Grace, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303 Re: Catawba Nuclear Station Unit 1 Docket No. 50-414/84-22
Dear Dr. Grace:
Our response of February 1, 1985 concerning this deficiency on Unit 2 stated that five valves and 2 damper operators on Unit 1 could be affected by this deficiency.
It.should have been noted that the failure can occur only after the valve or damper has been subject to a hammering effeet. There has been no evidence of a hammering effect on the affected valves and dampers on Unit 1.
Also, our valves and dampers are low-speed operators and are less likely to be affected in this way.
For these reasons, we have determined that the valves and dampers are operable.
Modifications to the dampers are in progress. The operators were modified as stated in the response of February 1, 1985.
Very truly yours, Hal B. Tucker LTP/mjf cc: Director Mr. Robert Guild, Esq.
Office of Inspection and Enforcement Attorney-at-Law U. S. Nuclear Regulatory Commission P. O. Box 12097 Washington, D. C. 20555 Charleston, South Carolina 29412 NRC Resident Inspector Mr. Jesse L. Riley Catawba Nuclear Station Carolina Environmental Study Group 854 Henley Place Palmetto Alliance Charlotte, North Carolina 28207 2135 Devine Street Columbia, South Carolina 29205 INPO Records Center Suite 1500
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