ML19312C838
| ML19312C838 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Arkansas Nuclear, Rancho Seco, Crane  |
| Issue date: | 08/29/1972 |
| From: | Mallay J BABCOCK & WILCOX CO. |
| To: | Deyoung R, Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML19312C825 | List: |
| References | |
| NUDOCS 8001100756 | |
| Download: ML19312C838 (1) | |
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UN!TtD STATES j'hh ATOMIC ENEFGY COMM:SSION fg. :_$1. *
- WASH tNGTCN. O.C. 20*45 Sg AUG 3 01972 Mr. James F. Mallay Manager, Lic?nsing Nuclear Power Generation Babcock & Wilcox P. O. Box 1260 Lynchburg, Virginia 24550
Dear Mr. Mallay:
We have been advised that Babcock & Wilcox (B&W) is preparing topical reports concerning (1) the assesscent of damage to the Oconee Unit 1 reactor internals due to flow induced vibration, (2) the redesign of the reactor internals of B&W reactors to reduce flow induced vibration and (3) the vibration predictions and monitoring equipment for the Oconee, Unit 1 vibration testing program.
Because these reports are an essential element of our evaluation of applications for operating licenses for several facilities, i.e., Oconee !!uclear Station l
Units 2 and 3, Three Mile Island Nucicar Station, Unit 1, Arkansas Nuclear One, Unit 1, and Rancho Seco Nuclear Generating Station, we vill need these topical reports on or before Septenbar 15, 1972.
If you are unable to comply vith this cchedule, it is likely that the overall schedule for completing the licensing review for these projects will have to be extended.
Because B&W has designated Oconee Unit 1 as the prototype reactor for vibration measurements, the results of these Oconee Unit 1 measurements vill affect a number of facilities.
If Oconee Unit 1 is not properly established as an acceptable prototype, another facility will need to be established as a prototype er each specific facility vill need to perform a complete program of vibratfon testing as defined in Safety Guide 20, " Vibration Measurements on r
Reactor Internals", before any licensing action can be completed.
Due to the number of projects potentially affected, va believe it prudent to consider contingency plans at this time.
Please inform us of your proposed course of action in the event that ycu are not able to establish the Oconee Unit 1 as an acceptable prototype.
l Please contact us if you desire any discussion or clarification of the material requested.
j Sincerely, j
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R. C. DeYoung, Assistant Director g@ g for Pressurized Water Reactors l
Directorate of Licensing 9
8001100 7$b
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