ML19329E230
| ML19329E230 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 03/30/1977 |
| From: | BABCOCK & WILCOX CO. |
| To: | |
| Shared Package | |
| ML19329E227 | List: |
| References | |
| NUDOCS 8006110652 | |
| Download: ML19329E230 (1) | |
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m Status of the Report on Reactor Vessel Surveillance Snecimen lioider Tubes This report has bcen written to provide information on the status of the reportabic deficiency on the reactor vessel surveillance specimen honer tubes (SSHT) reportcd in conformance with 10 CFR 50.55e.
Current Status The SSHT for B&W 177 fuel assembly plants has been redesigned and prototype testing has been compJ eted which verifies the adequacy of this new design. The redesign is described in B&W Topical Report EAU-10051, Supplement 1 " Design of Reactor Internals and Incore Instrument Nozzles for Flow Induced Vibration -
Structural Analysis of 177-F. A. Redesigned Surveillance Specimen Holder Tubes" and the prototype test program conducted at Davis.Besse Unit 1 is described in B&W Topical Report BAW-10038, Supplement 1, " Prototype Vibration Measurement Program for Reactor Internals". Both of these reports were submitted to NRC in Augu st, 1976, The successful results of the prototype qualification and the minor design improvements made as a result of this testing were summarized to members of the NRC Staff in a meeting held February 9,1976 with B&W and Toledo Edison.
These results are to be further documented in a B&W Topical Report to be submitted to NRC in April, 1977. NRC Staff approval of the redesigned SSHT and the qualification as a prototype is anticipated following review of this report.
The review schedule for this report has not yet been developed, however, the report will be referenced by other B&W plants scheduled to startup in 1977.
The original SSHT design has been removed from the Midland 1&2 internals and procurement of the redesigned SSHT's for installation at Midland is pro-ceeding. The Midland FSAR will describe this new design and incorporate the above B&W Topical Reports by reference.
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