ML19308D539
| ML19308D539 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 01/09/1976 |
| From: | Rodgers J FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML19308D534 | List: |
| References | |
| NUDOCS 8002280974 | |
| Download: ML19308D539 (2) | |
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R0$$8 Power January 9, 1976 Mr. Donald F.
Knuth, Director Directorate of Regulatory Operations
' U. S. Nuclear Regulatory Commission
' Washington, D.C.
20545
Subject:
50-302 Crystal River Unit #3
Dear Mr. Knuth:
j 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 A. m L.L1= J.Ilulouwy.
W gesently Love J h ut d four valves in safety-related systems with bent valve stems of Type 316 stainless steel material. We are verifying the possible e cistence of other similar occurrances. The manufa :urer (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 43 with operators of 10 seconds or less closing time.
Our new stems will be manufactured from ASTM-A564 Grade 360 COND. H-1150 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,
/7 JTR: ldh J. T. Rodge Assistant Vice President cc:
N. C. Moseley, Director, Region II M. H. Kleinman l
General Office 320i Nty tum stree se. P o som iso 42. si Pee <stug. Floritta 33733 e 813-8665:51 l>
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