ML19308D753
| ML19308D753 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 01/09/1976 |
| From: | Rodgers J FLORIDA POWER CORP. |
| To: | Knuth D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8003130689 | |
| Download: ML19308D753 (1) | |
Text
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'v:t :. Y Fisrida Pw c o.o.....e..r January 9, 1976
'Mr.
Donald F.~Knuth, Director
' Directorate of Regulatory Operations
.iU. S. Nuclear Regulatory Commission
- ' Washington, D.C.
20545
Subject:
50-302 Crystal River Unit #3
Dear Mr. Knuth:
., In accordance with 10 CFR 50.55 (e), we wish to advise you that the possible deficiency reported verbally to you on
. December 17, 1975, is now considered as being verified as
. &=ev L.L1= a=fivla..vy.
We presently hav. Jovuiiiei. Lea four valvos in safety-related systems with bent valve stems of Type 316 stainless steel material.
We are
' verifying the possible existence of other similar occurrances.
The manufacturer (Walworth/Aloyco) has advised us that valves with Type 316 stainless steel stems are not suitable for service with quick-closing operators.
We have, therefore, ordered new valve stems for all Walworth and Aloyco valves at Crystal River Unit
- 3 with operators of 10 seconds or less closing time.
Our new stems will be manufactured from ASTM-A564 Grade 360-COND.-H-ll50-material.
At the present time, delivery dates for the above stems have not been finalized.
It is our opinion that the change to the new material will-eliminate this particular problem.
Very truly yours, l
JTR:1dh J. T. Rodge Assistant Vice President cc:
N. C. Moseley, Director,-Region II 8003130 [# /0 (>Q M.-H. Kleinman g
t General Office 32o1 inntyrurtn street sovin. P O Som 14042. St Petersburg. Florida 33733 e 813-866 5151 C
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