ML20084D771
| ML20084D771 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 11/08/1974 |
| From: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| To: | Goller K US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084D695 | List:
|
| References | |
| NUDOCS 8304120328 | |
| Download: ML20084D771 (2) | |
Text
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November 8, 1974
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._ c t Mr. Karl R. Coller, Assistant Director C-b,)[4 f~/l M
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Dear Mr. Goller:
Re: Turkey Point Units 3 & 4 Docket l'os. 50-250 & 50-251 Piping Shock Suppressors (Snubbers)
Mr. R. C. DeYoung's letter to us dated November 8, 1973 requested that Florida Power & Lisjht Company submit to the Directorate of Licensing, within one year, our prcposed program to improve snubber service life and reliability and proposed Technical Specification changes for a snubber surveillance program.
The proposed snubber surveillance program Technical Specification changes were transmitted by my letter of Novenber 6, 1974.
To upgrado the snubber service life and reliability, FPL has a three part program under way and plans to continue this program.
First, we modified our existing snubbers in accoidance with the manufac-turers recommendations and used the ethyleneprcpylene seal materials.
Secondly, we have through our architect-engineers requested a curvey of the snubber industry and asked for their recommendatiens.
In addition, we have been in contact with our snubber manufacturer to determine his recommendations.
In this manner we can stay abreast of current industry practices.
The third part of our program consists of a test snubber which is of a mechanical design rather than hydraulic design. This test snubber has been installed on Turkey Point Unit #2, a fossil fueled unit, reheat steam line. This steam line has an environment similar to that found on our nuclear units.
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O Mr. Karl R. Goller November 8, 1974 By the middle of October, 1974, the test snubber had been in operation for approximately three (3) nonths.
At that time, in ectneration with the manufacturer, the test snubber was disassembled, inspected and returned to service. An evaluation is being made, based on the results of the inspection, as to the best alternative to pursue. The alternatives include:
a) termination of this test program and continue to survey the industry b) obtain additional data from the re-installed test snubber c) extrapolate the test data and use as a basis for procurement of replacement snubbers.
The results of FPL's observations and inspections will be available at our plant, should the AEC - Regulatory Operations inspectors desire to review them.
Yours very truly,
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Robert E.
Uhrig Vice president RED:nch cc:
Mr. Jack R.
Newman 1
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